CN106787224B - A Distributed Intelligent Grounding Wire Management System - Google Patents

Abstract

The invention discloses a distributed intelligent ground wire management system, which comprises an on-site grounding cabinet (1) and a communication module (2) which are distributed on each site, wherein a locking device (3) is arranged in the on-site grounding cabinet (1); three conductor ends (4) of a three-phase grounding wire are connected to the locking device (3), and a key (5) which is mutually locked with an external power supply is also connected to the locking device (3); the ground cabinet (1) is internally provided with a position sensor (6), and the position sensor (6) is connected with the communication module (2). The invention not only can facilitate the use of the temporary grounding wire, but also can improve the safety of the temporary grounding wire in use.

Description

A Distributed Intelligent Grounding Wire Management System

technical field

The invention relates to a grounding wire management system for a power plant, in particular to a distributed intelligent grounding wire management system for temporary grounding wires in a power plant.

Background technique

Temporary grounding wires are widely used in power plants. The scope of use of temporary grounding wires includes plant power systems and generator excitation systems. In the plant power system of the pumped storage power station, it includes the switchboard for each unit, the switchboard for the ground switch station, the switchboard for the central control building, the switchboard for the upper storage and the switchboard for the lower storage. In the upper and lower warehouse areas, the grounding wires were placed in one place for centralized management in the past. Every time a temporary grounding wire is used, it needs to be transported for a long distance, which is inconvenient to use; at the same time, the temporary grounding wire is easily removed by mistake during use. situation, it will cause serious safety hazards. Therefore, the temporary grounding wire in the existing power plant has the problems of inconvenient use and unsatisfactory safety.

Contents of the invention

The object of the present invention is to provide a distributed intelligent ground wire management system. The invention not only facilitates the use of the temporary grounding wire, but also improves the safety of the temporary grounding wire in use.

The technical solution of the present invention: a distributed intelligent grounding wire management system, including on-site grounding cabinets and communication modules distributed at various sites, a locking device is installed in the on-site grounding cabinet; a three-phase grounding wire is connected to the locking device The three conductor ends are connected with a key for interlocking with the external power supply on the locking device; a position sensor is also arranged in the local grounding cabinet, and the position sensor is connected with the communication module.

In the aforementioned distributed intelligent grounding wire management system, the position sensor is connected to the communication module through a wireless or wired connection, and the communication module is connected to a mobile phone, a PAD or a computer terminal wirelessly in real time.

In the aforementioned distributed intelligent grounding wire management system, the key can only be removed after the external power supply is turned off, and then the key can be used to unlock the locking device to access the conductor end of the grounding wire; Only when all ends are locked on the locking device can the key be removed and used for external power supply.

In the aforementioned distributed intelligent grounding wire management system, the locking device includes a base on which three insertion holes are provided; the right side of the rightmost insertion hole is provided with a lock head connected to a key, and the other two The right side of each plug-in hole is provided with a functional lock head; the bottom of the lock head and the function lock head are provided with a cam, and the upper lock piece and the lower lock piece are connected to the cam; The inserting piece inserted into the piece hole is provided with a lock hole; the left side of the lower locking piece is provided with a lower lock tongue inserted into the lock hole.

In the aforementioned distributed intelligent ground wire management system, a blocking piece is provided on the right side of the lower locking piece, and the blocking piece contacts and connects with the lower locking tongue on the adjacent lower locking piece.

In the above-mentioned distributed intelligent grounding wire management system, a vertical rectangular hole is provided in the middle of the lower locking plate, and a clamping column that engages with the rectangular hole is provided at the protruding position of the cam.

In the aforementioned distributed intelligent ground wire management system, a limit piece perpendicular to the protruding position of the cam is provided at the edge of the cam, and a limit block is provided on the upper locking plate corresponding to the rotation path of the limit piece.

In the above-mentioned distributed intelligent grounding wire management system, the left end of the upper locking plate is provided with an upper lock tongue, the right end is connected with a spring, and the middle part of the base is provided with a partition connected with the end of the spring.

Compared with the prior art, the present invention improves the existing grounding wire management system, adopts intelligent management, and by setting the local grounding cabinet, communication module, locking device and position sensor, the original centralized management of the grounding wire can be controlled according to the planning requirements. Distributed arrangement of the installation position, the grounding wire can be directly used at the site where the temporary grounding wire is required, which is convenient for use; the placement and locking of the conductor end of the grounding wire can also be facilitated by setting the locking device, and the locking device and the external power supply use the same Use the key to realize the mechanical locking function. Only when the key is removed from the control terminal of the external power supply and the incoming points of all parties are reliably disconnected can the key be used to unlock the locking device and take out the temporary grounding wire, and only the temporary grounding wire is placed The key can only be removed after the return and locking device is reliably locked, and it is used for energizing the external power supply to improve safety; moreover, the position status of the temporary grounding wire in the local grounding cabinet (taken or not Access) for detection and transmission processing, which can be displayed on terminals such as mobile phones, PADs, and computers, which facilitates real-time detection and monitoring of the status of the temporary grounding wire, and further improves the safety of use. In addition, the present invention is also provided with a plug hole, a cam, an upper lock piece, a lower lock piece, a spring, a rectangular hole, a post and a plug piece to form a locking lock, and by setting the lower bolt to lock with the lock hole on the conductor end plug piece, And the linkage structure of three lower lock pieces is formed through the contact connection structure of the catch piece and the lower lock tongue; when the insert piece is not inserted, the lock head or the functional lock head can only rotate half a stroke through the limit piece and the limit block (90 degrees), and the functional lock head or the lock head on the right side is only rotated half a stroke because the front functional lock head only rotates half a stroke, so that the block of the lower lock piece blocks the lock bolt of the next lower lock piece, and thus cannot be rotated Relative to the functional lock head or lock head on the right side, it prevents the key from accidentally turning 180 degrees to release the temporary grounding wire; only when the inserts at the three conductor ends are inserted into the insertion hole, can the key be turned to release the temporary grounding wire, preventing temporary grounding The wire is accidentally removed during use, which further improves safety. Therefore, the present invention not only facilitates the use of the temporary grounding wire, but also improves the safety of the temporary grounding wire in use.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of locking device;

Figure 3 is a schematic diagram of the internal structure of the base;

Fig. 4 is a structural schematic diagram of the upper locking plate;

Fig. 5 is a schematic diagram of the structure of the lower locking plate;

Fig. 6 is a structural schematic diagram at the back of the cam;

Fig. 7 is a working principle diagram of the locking device;

Fig. 8 is a schematic diagram of the structure of the conductor end.

The marks in the drawings are: 1-site grounding cabinet, 2-communication module, 3-locking device, 4-conductor end, 5-key, 6-position sensor, 7-base, 8-insert hole, 9- Lock head, 10-function lock head, 11-cam, 12-upper lock piece, 13-lower lock piece, 14-insert piece, 15-lock hole, 16-lower bolt, 17-block piece, 18-rectangular hole , 19-card post, 20-limit sheet, 21-limit block, 22-upper bolt, 23-spring.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

Example. A distributed intelligent grounding wire management system, whose composition is shown in Figures 1 to 8, includes on-site grounding cabinets 1 and communication modules 2 distributed in various sites, and a locking device 3 is arranged in the on-site grounding cabinet 1; the locking device 3 The three conductor terminals 4 of the three-phase grounding wire are connected to the top, and the locking device 3 is also connected with the key 5 for interlocking with the external power supply; the local grounding cabinet 1 is also provided with a position sensor 6, and the position sensor 6 is connected with the communication Module 2 is connected.

The position sensor 6 and the communication module 2 are connected wirelessly or wiredly, and the communication module 2 is wirelessly connected with the mobile phone, PAD or computer terminal in real time; the key 5 can only be taken off after the external power supply is turned off, and then the key 5 is Only when the locking device 3 is unlocked can the conductor end 4 of the ground wire be used; meanwhile, only when the conductor ends 4 are all locked on the locking device 3 can the key 5 be taken off and used for external power supply.

The locking device 3 includes a base 7, and the base 7 is provided with three insert holes 8; the right side of the rightmost insert hole 8 is provided with a lock head 9 connected with the key 5, and the other two insert holes 8 The right side is provided with a functional lock head 10; the bottom of the lock head 9 and the function lock head 10 are all provided with a cam 11, and the upper lock piece 12 and the lower lock piece 13 are connected on the cam 11; There is an insert 14 inserted into the insert hole 8, and the insert 14 is provided with a lock hole 15; the left side of the lower lock 13 is provided with a lower lock tongue 16 inserted with the lock hole 15; the lower lock The right side of 13 is provided with a blocking piece 17, and the blocking piece 17 contacts and connects with the lower locking tongue 16 on the adjacent lower locking piece 13; the middle part of the lower locking piece 13 is provided with a vertical rectangular hole 18, and the protruding position of the cam 11 There is a clamping post 19 snapped into the rectangular hole 18 at the center; a stopper 20 perpendicular to the protruding position of the cam 11 is also provided at the edge of the cam 11, and the upper locking piece 13 corresponds to the rotation path of the stopper 20 A limit block 21 is arranged on it; an upper lock tongue 22 is arranged on the left end of the upper locking plate 13, a spring 23 is connected to the right end, and a partition connected to the end of the spring 23 is arranged in the middle of the base 7 .

Working principle: When in use, the local grounding cabinet 1 is placed in a place where a temporary grounding wire is required, and the conductor terminal 4 is installed on the locking device 3 in the local grounding cabinet 1 for easy access. Simultaneously, the position sensor 6 detects the position status of the grounding wire on the conductor end 4, cooperates with setting numbers or marks on the grounding wire to distinguish the real-time position status of the grounding wire in each position whether it is used or not, and transmits it through wired or wireless The transmission transmits the detection signal to the communication module 2 for processing, and the communication module 2 transmits the processing structure to terminal devices such as mobile phones, PADs or computers for remote real-time monitoring, which is convenient to use and improves safety. At the same time, the locking device 3 and the external power supply use the same key 5 to realize the mechanical locking function. Only when the key 5 is removed from the control terminal of the external power supply and all incoming points of all parties are reliably disconnected can the locking device 3 be unlocked with the key 5. The temporary grounding wire is taken out, and the key 5 can only be removed after the temporary grounding wire is put back and the locking device 3 is securely locked, which is used for energizing the external power supply and improving safety.

When the ground wire is not used, the conductor end 4 in use is locked by the locking device 3 . When locked, the lock head 9 is in the state of rotating 180 degrees counterclockwise (the cam 11 at the lock head 9 is on the right side is the initial position) and cannot be rotated without the key 5 inserted; the lower lock tongue 16 on the rightmost lower lock piece 13 Insert in the locking hole 15 on the insertion piece 14 of a conductor end 4, because the lower locking tongue 16 on the adjacent lower locking piece 13 contacts and connects with the blocking piece 17 to form a linkage structure, so the other two lower locking pieces 13 The lower locking tongue 16 is also inserted into the locking hole 15 on the insert piece 14 corresponding to the conductor end 4 ; thus all the conductor ends 4 are locked on the locking device 3 .

When the grounding wire needs to be used, unlock and pull out the key 5 on the control terminal of the external power supply to cut off the power of each external power transmission point, then insert the key 5 into the lock head 9, and rotate the lock head 9 clockwise 180 degrees (return to the initial position) When the cam 11 on the lock head 9 rotates, the connection relationship between the clamp post 19 and the rectangular hole 18 drives the lower locking piece 13 to move to the right, so that the lower locking tongue 16 is disengaged from the locking hole 15 on the insertion piece 14, so that the The conductor end 4 is taken out; since the lower locking piece 13 on the far right moves to the right, its lower locking tongue 16 is separated from the blocking piece 14 on the adjacent lower locking piece 13, so the functional lock head 10 can be rotated 180 degrees clockwise In the same way, the corresponding lower locking plate 13 on the functional lock head 10 is unlocked to the corresponding conductor end 4; thus the three conductor ends 4 can be removed for temporary grounding operation.

After taking it off, due to the effect of the spring 23 and the dividing plate, when the functional lock head 10 is turned, the clamping post 19 on the cam 11 drives the lower locking plate 13 to rotate counterclockwise, and the clamping post 19 (or the edge of the boss 11) is in contact with the limiter at the same time. The side of the position block 21 contacts the limit, so that the upper lock plate 12 and the lower lock plate 13 move to the left at the same time; The stopper 20 of the stopper 20 is clamped, so that the functional lock 10 cannot continue to rotate counterclockwise; similarly, the key 5 cannot be removed after being rotated 180 degrees counterclockwise; to prevent the key 5 from being connected after the temporary grounding wire is used. External power supply.

After the temporary ground wire is used, use the function lock head 10 (or the key 5 to drive the lock head 9) to rotate to the initial position. The contact connection with the side of the limit block 21 drives the upper locking piece 13 to move the compression spring 23 to the right, so that the lower locking tongue 16 and the upper locking tongue 22 are all away from the position of the inserting piece hole 8, so that the conductor end 4 can be locked. Insert the insert piece 14 into the insert hole 8; then turn the functional lock head 10 (or lock head 9) counterclockwise, the lower lock piece 13 and the upper lock piece 12 move to the left at the same time; when moving, the upper lock tongue of the upper lock piece 12 22 is blocked by the insertion piece 14 and cannot continue to move, so that the limit block 21 cannot move to the position where the limit piece 20 is stuck, so that the cam 11 can continue to rotate to 180 degrees, driving the lower lock tongue on the lower lock piece 13 16 is inserted into the lock hole 15 for locking. In the same way, due to the linkage structure of the blocking piece 17, the blocking piece 17 can block the insertion hole 8 on its right side; Only when the piece 13 is moved to the left can the conductor end 4 on the right side be inserted; that is, the conductor end 4 needs to be inserted and locked from left to right in order to turn the key 5 to the initial position and then remove the key 5 for external power supply. power ups.

Claims (3)

1. A distributed intelligent grounding wire management system, characterized in that: it includes on-site grounding cabinets (1) and communication modules (2) distributed on various sites, and a locking device (3) is arranged in the on-site grounding cabinet (1) ); the locking device (3) is connected with three conductor ends (4) of the three-phase grounding wire, and the locking device (3) is also connected with a key (5) interlocked with the external power supply; the local grounding cabinet ( 1) A position sensor (6) is also arranged inside, and the position sensor (6) is connected with the communication module (2); The locking device (3) includes a base (7) on which three insert holes (8) are provided; the right side of the rightmost insert hole (8) is provided with a key (5) connected Lock head (9), the right side of other 2 insert holes (8) is provided with function lock head (10); The bottom of lock head (9) and function lock head (10) is all provided with cam (11), and cam (11) is connected with an upper locking piece (12) and a lower locking piece (13); each of the conductor ends (4) is provided with an insertion piece (14) plugged into the insertion piece hole (8). The sheet (14) is provided with a lock hole (15); the left side of the lower lock sheet (13) is provided with a lower lock tongue (16) plugged into the lock hole (15); The right side of the lower locking piece (13) is provided with a blocking piece (17), and the blocking piece (17) contacts and connects with the lower dead bolt (16) on the adjacent lower locking piece (13); A vertical rectangular hole (18) is provided in the middle part of the lower locking piece (13), and a clamping column (19) that engages with the rectangular hole (18) is provided at the protruding position of the cam (11); The edge of the cam (11) is also provided with a limiting piece (20) perpendicular to the protruding position of the cam (11), and a limiting piece (20) is provided on the rotation path corresponding to the limiting piece (20) on the upper locking piece (12). block(21); The left end of the upper locking piece (12) is provided with an upper dead bolt (22), the right end is connected with a spring (23), and the middle part of the base (7) is provided with a dividing plate connected with the end of the spring (23). 2. A distributed intelligent grounding wire management system according to claim 1, characterized in that: the position sensor (6) is connected to the communication module (2) by wireless connection or wired connection, and the communication module (2) is connected to the mobile phone , PAD or computer terminal real-time wireless connection. 3. A distributed intelligent ground wire management system according to claim 1, characterized in that: the key (5) can only be removed after the external power supply is turned off, and then the key (5) is used for the locking device ( 3), the conductor end (4) of the grounding wire can be accessed; at the same time, only when the conductor end (4) is completely locked on the locking device (3), can the key (5) be removed and used for external power supply .

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