CN112242659B - A 10kV metal-enclosed switchgear isolation baffle blocking device - Google Patents

Abstract

The invention provides a 10kV metal enclosed type switch cabinet isolation baffle locking device which comprises a bearing unit, a transmission unit, a lock body unit and an infrared alarm unit. The 10kV metal closed type switch cabinet isolation baffle locking device is reasonable in structure, firm, flexible to operate, complete in function and good in compatibility, the isolation baffle transmission connecting lever is fully utilized to reserve a lock hole, reliable locking after the isolation baffle is closed can be achieved, when a person or a handcart is in a preset range of the locking device, the locking device can give out an audible and visual alarm prompt, personal electric shock and casualty accidents caused by the fact that an operator mistakenly opens the isolation baffle and mistakenly touches a charged part in a switch cabinet can be effectively avoided, and safe and smooth maintenance operation of the switch cabinet can be guaranteed.

Description

A 10kV metal-enclosed switchgear isolation baffle blocking device

technical field

The invention relates to the technical field of locking devices, in particular to a locking device for isolating baffles of 10kV metal-enclosed switch cabinets.

Background technique

10kV metal-enclosed switchgear is a commonly used 10kV voltage level switchgear. According to the requirements of Article 7.5.4 of the Electric Power Safety Regulations: After the handcart switch in the high-voltage switch cabinet is pulled out, the baffle that isolates the live part is closed and prohibited from opening, and a signboard of "Stop, high-voltage danger!" is set up. When the handcart switch of the 10kV metal-enclosed switchgear is shaken from the working position to the test position, the isolation baffle used for the live part in the isolation switchgear should be reliably closed. However, in the prior art, the isolation baffle in the 10kV metal-enclosed switchgear is not provided with a forced locking function after being closed. Personnel can manually operate the transmission arm of the isolation baffle to open the isolation baffle, exposing the live parts in the switchgear. It is very easy to cause electric shock casualties.

At present, in order to prevent the 10kV metal-enclosed switchgear from being opened by mistake after the isolation baffle is closed, there are mainly: the method of hanging the "running" red flag in the cabinet, the method of padlocking the transmission arm of the isolation baffle, and the combination of the two methods.

Among them, the method of hanging the "running" red flag: after the isolation baffle in the 10kV metal-enclosed switchgear is closed, hang the "running" red flag in the switchgear to remind personnel that it is forbidden to open the isolation baffle. "Red flag, causing the "running" red flag to fall off and lose its prompting function.

Isolation baffle drive crank arm padlock method: use the isolation baffle drive crank arm to reserve a lock hole, and the size of the padlock lock beam is strictly required. If the size of the lock beam is too large, the padlock will be blocked by the parts next to the lock hole of the transmission arm and cannot pass through the lock hole; if the size of the lock beam is too small, the padlock will not be able to lock. In addition, padlock on the transmission arm of the isolation baffle, the target of the lock is not obvious. If the operation and maintenance personnel do not check carefully before powering on, they do not remove the padlock on the transmission arm, and then shake the handcart switch from the test position to the working position. At this time, the transmission arm of the isolation baffle will not be able to move, and the isolation baffle cannot be opened. Forcibly rocking the handcart switch will cause mechanical damage to the handcart switch and the transmission arm of the isolation baffle.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the present application proposes a 10kV metal-enclosed switch cabinet isolation baffle locking device, so as to realize reliable locking after the isolation baffle is closed.

In order to achieve the above purpose, the present application proposes a 10kV metal-enclosed switchgear isolation baffle blocking device, including a carrying main board, one side of the carrying main board is connected with a carrying side plate, and the carrying side board is provided with The clamping part used in cooperation with the mechanism in the switch cabinet; a first transmission main board and a second transmission main board are arranged on the other side of the carrying main board, and along the front-rear direction, the first transmission main board is located in the carrying main board and the Between the two transmission main boards, the upper ends of the carrying main board, the first transmission main board and the second transmission main board are clamped along the front-rear direction by the first clamp, and the carrying main board, the first transmission main board and the second transmission main board are clamped by the second clamp. The lower ends of the second transmission main board are clamped along the front and rear directions, so that the first transmission main board, the second transmission main board, the first clamp and the second clamp can be displaced in the left and right directions relative to the carrying main board; The transmission main board is connected with a first transmission side plate, the first transmission side plate is provided with a clamping part used for cooperating with the mechanism in the switch cabinet, and the second transmission main board is connected with a second transmission side plate, The second transmission side plate is provided with a round hole for cooperating with the mechanism in the switch cabinet, and a conical pin is also connected to the second transmission side plate, and the conical pin is used to isolate the 10kV switchgear. The lock hole reserved on the plate transmission arm is used in conjunction with it; a connecting plate is arranged on the carrying main plate, and two rails are arranged on the connecting plate, and the two rails are respectively connected with the first transmission main plate and the first transmission main plate. The second transmission main board is used together; the torsion spring is fixed on the carrying main board, so that one end of the torsion spring is fixed at the torsion spring hole provided on the carrying main board, and the other end of the torsion spring is fixed on the torsion spring hole provided on the carrying main board. At the torsion spring hole on the first transmission main board, a blocking piece is also provided on the first clamp, and the blocking piece is used to cooperate with the torsion spring; a spring connection is provided on the second transmission main board. one end of the spring is fixed on the spring connecting plate, the other end of the spring passes through the spring hole provided on the second transmission side plate, and the other end of the spring is fixed on the first transmission side A base is provided on the carrying main board, a connecting rod is hinged with the base, one end of the connecting rod is hinged with a connecting piece, and the connecting piece is also hinged with the second transmission main board. The other end of the rod is used in cooperation with the lock tongue, and the movement of the connecting rod can be restricted by the lock tongue; the lock tongue is fixed on the lock cylinder, the lock cylinder is fixed on the bearing main board, and the key is inserted into the key hole, turn the key to control the rotation of the deadbolt.

In some embodiments, a warning sign sticker is further provided on the carrying main board.

In some embodiments, a positioning column is provided on the carrying main board, and a positioning groove is provided on the first transmission main board to cooperate with the positioning column, which is defined by the cooperation of the positioning column and the positioning groove. The left and right movement and displacement of the first transmission main board.

In some embodiments, the link is a V-shaped link.

In some embodiments, the locking device further includes an infrared alarm unit, the infrared alarm unit includes an infrared induction photoelectric switch, a buzzer and a power module, the infrared induction photoelectric switch is connected to the power module through a wire, so One end of the buzzer is connected to the positive pole of the power module through a wire, and the other end of the buzzer is connected to the infrared induction photoelectric switch through a wire.

The beneficial effect of the solution of the present application is that the above-mentioned 10kV metal-enclosed switchgear isolation baffle locking device has a reasonable structure, firmness and reliability, flexible operation, complete functions, and good compatibility, and it makes full use of the isolation baffle drive arm to reserve a lock hole , which can realize reliable locking after the isolation baffle is closed. When the personnel or the handcart switch is within the preset range of the locking device, the locking device can issue a sound and light alarm prompt, which can effectively prevent the operator from accidentally opening the isolation baffle. The electric shock casualties caused by accidental contact with live parts in the switchgear can ensure the safety and smooth progress of the switchgear maintenance operation.

Description of drawings

FIG. 1 shows a schematic structural diagram of an angle of the isolation baffle blocking device of the 10kV metal-enclosed switchgear in the embodiment.

FIG. 2 shows a schematic structural diagram of another angle of the isolation baffle blocking device of the 10kV metal-enclosed switchgear in the embodiment.

FIG. 3 shows a schematic structural diagram of the first transmission main board in the embodiment.

FIG. 4 shows a partial structural schematic diagram of the second transmission main board in the embodiment.

FIG. 5 shows a schematic diagram of the structure of the connecting rod in the embodiment.

FIG. 6 shows a schematic diagram of the structure of the torsion spring in the embodiment.

FIG. 7 shows a schematic diagram of the principle of the infrared alarm unit in the embodiment.

Reference numerals: 1-bearing main board, 2-bearing side plate, 3-first transmission main board, 4-second transmission main board, 5-first transmission side plate, 6-clamping part, 7-second transmission side plate , 8-cone pin, 9-round hole, 10-cone pin nut, 11-connecting rod, 12-base, 13-spring, 14-spring connecting plate, 15-torsion spring, 16-spring washer, 17-infrared Induction photoelectric switch, 18-buzzer, 19-power module, 20-lock cylinder, 21-lock tongue, 22-first clamp, 23-block plate, 24-connecting piece, 25-positioning post, 26-connecting plate , 27-Screw, 28-Wire Sleeve, 29-Wire, 30-Wire Clip, 31-Second Fixture, 32-Warning Sign Sticker, 33-Tube Lock Nut, 35-Torsion Spring Hole, 36-Locating Slot, 38 - spring hole, 42- key hole, 43- power switch.

Detailed ways

The specific embodiments of the present application will be further described below with reference to the accompanying drawings.

Because the closing and opening of the isolation baffle of the 10kV metal-enclosed switchgear is realized by the varicose movement of the isolation baffle drive arm, a lock hole can be reserved on the isolation baffle drive arm to develop an isolation baffle lock device to achieve reliable locking after the isolation baffle is closed.

As shown in Figures 1-7, the 10kV metal-enclosed switchgear isolation baffle blocking device involved in the present application includes a carrying main board 1, one side of the carrying main board 1 is connected with a carrying side plate 2, and the carrying side board 2 There is a clamping portion 6 for cooperating with the mechanism in the switch cabinet, and a warning sign 32 can also be provided on the carrying main board 1 .

A first transmission main board 3 and a second transmission main board 4 are arranged on the other side of the carrying main board 1. Along the front-rear direction, the first transmission main board 3 is located between the carrying main board 1 and the second transmission main board 4. The upper ends of the carrying main board 1 , the first transmission main board 3 and the second transmission main board 4 are clamped along the front-rear direction by the first clamp 22 , and the carrying main board 1 , the first transmission main board 3 and the second transmission main board 4 are clamped by the second clamp 31 . The lower end of the second transmission main board 4 is clamped along the front-rear direction, so that the first transmission main board 3 , the second transmission main board 4 , the first clamp 22 and the second clamp 31 can move in the left-right direction relative to the carrying main board 1 . displacement.

The first transmission main board 3 is connected with a first transmission side plate 5, and the first transmission side plate 5 is provided with a clamping part 6 for cooperating with the mechanism in the switch cabinet. The second transmission main board 4 A second transmission side plate 7 is connected to it. The second transmission side plate 7 is provided with a round hole 9 for use with the mechanism in the switch cabinet. The second transmission side plate 7 is also provided with a conical pin nut. 10 is connected with a conical pin 8, and the conical pin 8 is used to cooperate with the lock hole reserved on the transmission arm of the isolation baffle of the 10kV switchgear.

A connecting board 26 is provided on the carrying main board 1, and two rails are provided on the connecting board 26, and the two rails are respectively used in cooperation with the first transmission main board 3 and the second transmission main board 4, so as to be used when When the first transmission main board 3 and the second transmission main board 4 move along the left and right directions, the first transmission main board 3 and the second transmission main board 4 slide in the track; the torsion spring 15 passes through the spring washer 16 and the screw 27 is fixed on the carrying main board 1, so that one end of the torsion spring 15 is fixed at the torsion spring hole provided on the carrying main board 1, and the other end of the torsion spring 15 is fixed on the first transmission main board. At the torsion spring hole 35 on the 3 , a blocking piece 23 is further provided on the first clamp 22 , and the blocking piece 23 is used to cooperate with the torsion spring 15 . A positioning post 25 is provided on the carrying main board 1 , and a positioning groove 36 is provided on the first transmission main board 3 for cooperating with the positioning post 25 . The left and right movement displacement of the first transmission main board 3 is limited. A spring connecting plate 14 is provided on the second transmission main board 4 , one end of the spring 13 is fixed on the spring connecting plate 14 , and the other end of the spring 13 is arranged on the second transmission side plate 7 through The other end of the spring 13 is fixed on the first transmission side plate 5. In this embodiment, the spring 13 is a tension spring.

A base 12 is provided on the carrying main board 1 , a connecting rod 11 is hinged with the base 12 , one end of the connecting rod 11 is hinged with a connecting piece 24 , and the connecting piece 24 is also connected with the second transmission main board 4 . Hinged, the other end of the connecting rod 11 is used in cooperation with the locking tongue 21, the movement of the connecting rod 11 can be restricted by the locking tongue 21, when the locking tongue 21 releases the restriction on the connecting rod 11, By manipulating the connecting rod 11 , the second transmission main board 4 can be moved along the left and right directions. In this embodiment, the connecting rod 11 adopts a V-shaped connecting rod; the lock tongue 21 is fixed on the lock cylinder 20 On the upper side, the lock cylinder 20 is fixed on the carrying main board 1 through the cam lock nut 33, the key is inserted into the key hole 42, and the key is rotated to control the rotation of the lock tongue 21, and the lock tongue 21 can be stuck in the on the connecting rod 11 to limit the movement of the connecting rod 11 .

The locking device involved in the present application further includes an infrared alarm unit, the infrared alarm unit includes an infrared induction photoelectric switch 17, a buzzer 18 and a power supply module 19 arranged on the carrying motherboard 1, the infrared induction photoelectric switch 17 , the buzzer 18 and the power supply module 19 can also be set at the required position according to the actual situation, for example, the power supply module 19 is set on the second transmission main board 4; the infrared induction photoelectric switch 17 is connected to the In the power supply module 19, one end of the buzzer 18 is connected to the positive pole of the power supply module 19 through a wire, and the other end of the buzzer 18 is connected to the infrared induction photoelectric switch 17 through a wire. The wire 29 is wrapped inside so as to protect the wire 29 . The line card 30 is used to fix the wires 29 at relevant positions, for example, on the carrier motherboard 1, so as to make the wiring more organized.

In the specific use process, when the locking device is not used, the following operations are performed: by turning the key, the lock tongue 21 is driven to rotate, thereby releasing the restriction on the connecting rod 11, and the staff manipulates the connecting rod 11 , so that the connecting rod 11 drives the second transmission main board 4 to move along the left and right directions, and the conical pin 8 will also move accordingly. At this time, the spring 13 will store energy and drive the first transmission main board. 3 moves, so that the torsion spring 15 rotates to store energy; when the connecting rod 11 is manipulated to move the first transmission main plate 3 and the second transmission main plate 4 in place, the tapered pin 8 is completely removed from the transmission. The crank arm is withdrawn from the lock hole and hidden behind the locking device. At this time, the staff manipulates the blocking piece 23, and the rotation of the torsion spring 15 is restricted by the blocking piece 23, so that the movement of the entire blocking device is restricted.

When the locking device is used, the blocking plate 23 is toggled to release the restriction on the torsion spring 15, and the first transmission main board 3 and the second transmission are made through the force of the torsion spring 15 and the spring 13. The main board 4 moves and returns to its original position along the left-right direction, and then rotates the key to drive the lock tongue 21 to rotate, so that the lock tongue 21 restricts the movement of the connecting rod 11 . Finally, turn on the power switch 43 to activate the infrared alarm unit. When the person or object is within the preset detection distance of the locking device, the circuit of the infrared alarm unit is turned on, the buzzer 18 emits a beeping sound, and the infrared sensing The photoelectric switch 19 flashes brightly.

The 10kV metal-enclosed switchgear isolation baffle locking device involved in this application has a reasonable structure, firmness and reliability, flexible operation, complete functions, and good compatibility. Reliable locking after the plate is closed, when the personnel or the handcart switch is within the preset range of the locking device, the locking device can issue a sound and light alarm prompt, which can effectively prevent the operator from accidentally opening the isolation baffle and touching the switch by mistake. Personal electric shock casualties caused by live parts in the cabinet can ensure the safety and smooth progress of the switch cabinet maintenance operation.

Claims (5)

1. The utility model provides a 10kV metal enclosed type cubical switchboard isolation barrier blocking device which characterized in that: the switch cabinet comprises a bearing main board, wherein one side of the bearing main board is connected with a bearing side plate, and a clamping part used for being matched with a mechanism in the switch cabinet is arranged on the bearing side plate; the other side of the bearing main board is provided with a first transmission main board and a second transmission main board, the first transmission main board is positioned between the bearing main board and the second transmission main board along the front-back direction, the upper ends of the bearing main board, the first transmission main board and the second transmission main board are clamped along the front-back direction through a first clamp, and the lower ends of the bearing main board, the first transmission main board and the second transmission main board are clamped along the front-back direction through a second clamp, so that the first transmission main board, the second transmission main board, the first clamp and the second clamp can displace in the left-right direction relative to the bearing main board; the first transmission main board is connected with a first transmission side board, the first transmission side board is provided with a clamping part used for being matched with a mechanism in a switch cabinet, the second transmission main board is connected with a second transmission side board, the second transmission side board is provided with a round hole used for being matched with the mechanism in the switch cabinet, the second transmission side board is also connected with a conical pin, and the conical pin is used for being matched with a lock hole reserved on a transmission crank arm of an isolation baffle of the 10kV switch cabinet; the bearing main board is provided with a connecting board, the connecting board is provided with two rails, and the two rails are respectively matched with the first transmission main board and the second transmission main board for use; the torsion spring is fixed on the bearing main board, so that one end of the torsion spring is fixed at a torsion spring hole arranged on the bearing main board, the other end of the torsion spring is fixed at a torsion spring hole arranged on the first transmission main board, and the first clamp is also provided with a blocking piece which is used for being matched with the torsion spring for use; a spring connecting plate is arranged on the second transmission main plate, one end of a spring is fixed on the spring connecting plate, the other end of the spring penetrates through a spring hole formed in the second transmission side plate, and the other end of the spring is fixed on the first transmission side plate; the bearing main board is provided with a base, a connecting rod is hinged with the base, one end of the connecting rod is hinged with a connecting piece, the connecting piece is also hinged with the second transmission main board, the other end of the connecting rod is matched with a lock tongue for use, and the movement of the connecting rod can be limited through the lock tongue; the lock tongue is fixed on the lock cylinder, the lock cylinder is fixed on the bearing main board, a key is inserted into the key hole, and the key is rotated to control the rotation of the lock tongue.

2. The 10kV metal enclosed switchgear separation baffle blocking device of claim 1, characterized in that: and a warning sign sticker is also arranged on the bearing main board.

3. The 10kV metal enclosed switchgear separation baffle blocking device of claim 1, characterized in that: the bearing main board is provided with a positioning column, the first transmission main board is provided with a positioning groove matched with the positioning column, and the left-right movement displacement of the first transmission main board is limited through the matching of the positioning column and the positioning groove.

4. The 10kV metal enclosed switchgear separation baffle blocking device of claim 1, characterized in that: the connecting rod adopts a V-shaped connecting rod.

5. The 10kV metal enclosed switchgear separation baffle blocking device of claim 1, characterized in that: the locking device further comprises an infrared alarm unit, the infrared alarm unit comprises an infrared induction photoelectric switch, a buzzer and a power module, the infrared induction photoelectric switch is connected to the power module through a lead, one end of the buzzer is connected to the anode of the power module through a lead, and the other end of the buzzer is connected to the infrared induction photoelectric switch through a lead.

Images