CN112526388A

CN112526388A - Fault indicator for low-voltage complete power distribution cabinet

Info

Publication number: CN112526388A
Application number: CN202011213957.6A
Authority: CN
Inventors: 蒋阿平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-03-19

Abstract

The invention provides a fault indicator of a low-voltage complete power distribution cabinet, which belongs to the technical field of electrical detection and comprises an indicator host, a short-circuit sensor, a power supply cable, a grounding sensor and a sensing cable, wherein the indicator host, the short-circuit sensor and the grounding sensor are connected through the sensing cable, and the short-circuit sensor is nested on the outer surface of a branch cable of the power supply cable. This kind of low-voltage switch board fault indicator is provided with the gim peg pole, utilize hexagonal spanner to twist interior screw rod promotion sliding plate and connect the electric piece to be close to each other until the laminating, make the circular telegram of second solenoid produce magnetic field, and attract the two to adsorb of permanent magnet and iron box under the effect of magnetic field suction, synchronous drive gim peg pole card is gone into and is realized fixing in the open slot, and then make the gim peg pole can be quick carry out the buckle to the annular plate after the circular telegram of second solenoid and fix, the dismouting efficiency when having improved the annular plate use greatly and to the fixed steadiness of annular plate.

Description

Fault indicator for low-voltage complete power distribution cabinet

Technical Field

The invention relates to the technical field of electrical detection, in particular to a fault indicator.

Background

The fault indicator is an electromagnetic induction device which can reflect a fault sign (red board) which shows that a short-circuit current passes through, the fault indicator is arranged along a distribution line, once the line has a fault, the short-circuit current flows through, the fault indicator acts, the fault sign red board appears, the fault indicator can be divided into three types of an overhead type, a cable type and a panel type according to application objects, wherein the panel type fault indicator applied to a power distribution cabinet generally comprises an indicator host installed on a cabinet door of the power distribution cabinet, a short-circuit sensor and a grounding sensor are respectively installed at corresponding positions of a power supply cable, data signals are transmitted between the indicator host and the short-circuit sensor and the grounding sensor through a specific optical cable, a binding post on the existing indicator host generally needs to be connected with more than two optical cables simultaneously, but a locking top cap is generally used for clamping the binding post to fix the optical cables in the fixing process of the optical cables, the situation that the cable drops appears easily takes place, and secondly annular plate separation among the current short circuit sensor is mostly to twist and move the fixed screw and realize the separation, and this kind of mode not only leads to the annular plate to disassemble loaded down with trivial details, and the screw relies on single screw thread interlock to realize fixed to the extrusion of annular plate, makes the annular plate appear not hard up situation easily, influences the annular plate fixed to the power supply cable.

Therefore, further research needs to be carried out on the basis of the existing fault indicator, and a new fault indicator of the low-voltage switchgear assembly is provided.

Disclosure of Invention

The invention aims to solve the technical problems in the background art and provides a fault indicator for a low-voltage complete power distribution cabinet.

In order to achieve the purpose, the invention provides the following technical scheme: a fault indicator for a low-voltage complete power distribution cabinet comprises an indicator host, a short-circuit sensor, a power supply cable, a grounding sensor and a sensing cable, wherein the indicator host is connected with the short-circuit sensor and the grounding sensor through the sensing cable;

the top of the indicator host is fixedly connected with a wiring board and a wiring terminal respectively, the top of the wiring post is provided with a locking top cap through thread nesting, a fixed pipe is embedded in the wiring terminal, three press switches are embedded in the periphery of the bottom of the wiring post, an inner rod is embedded in the fixed pipe, an opening in the fixed pipe is provided with a threading hole, a first electromagnetic coil is fixedly connected to the periphery of the inner rod, a movable rod is embedded in the first electromagnetic coil through threads, the tail end of the movable rod is fixedly connected with a fixed clamping plate, the movable rod and the fixed clamping plate are made of iron materials, a clamping rod is slidably arranged in the threading hole in the fixed pipe, and the tail end of the clamping rod is provided with the fixed clamping plate;

the top of the short circuit sensor is nested with an annular plate, the top of the annular plate is embedded with an extrusion rod, an open slot is arranged at the bottom opening of the annular plate, a fixed bolt rod is embedded at the joint of the left side and the right side of the short circuit sensor and the open slot, a magnetic insulation box is embedded in the short circuit sensor, a second electromagnetic coil is fixedly connected in the magnetic insulation box, an inner sliding groove is arranged at an inner opening of the magnetism isolating box, an inner screw rod is rotatably connected inside the fixed bolt rod, the left end of the fixed bolt rod is fixedly connected with a connecting rod, the left end of the connecting rod is fixedly connected with a permanent magnet, one end of the second electromagnetic coil, which is close to the connecting rod, is fixedly connected with an iron box, the left side of the inner part of the iron box is fixedly connected with an electricity-connecting block, a sliding plate is arranged inside the iron box in a sliding mode, and a spring is arranged between the sliding plate and the inside of the iron box.

Further preferred embodiments: the first electromagnetic coils are electrically connected with the press switches in a one-to-one correspondence mode, magnetic fields generated by electrifying the first electromagnetic coils act on the two fixing clamping plates, and the two fixing clamping plates are attracted to each other through magnetic field attraction.

Further preferred embodiments: the fixing bolt rod is fixedly adsorbed with the iron box through the magnetic field suction force generated by electrifying the second electromagnetic coil, and the widest part of the fixing bolt rod is matched with the open slot.

Further preferred embodiments: the inner screw advances through the occlusion of the threads to push the sliding plate to approach and attach to the power connection block, and a regular hexagonal groove is formed in one end of the outer portion of the inner screw.

Further preferred embodiments: the cross section of the binding post is in a horn-shaped arrangement with a small upper part and a large lower part, the thread is arranged on the outer surface of the top of the binding post, the locking top cap is matched with the locking top cap, and an opening is formed in the top of the binding post.

Further preferred embodiments: the whole connecting rod is regular hexagonal prism setting, and connecting rod size and shape all are supporting setting with interior spout internal diameter and shape.

Further preferred embodiments: be equipped with the spring between supporting rod and the fixed pipe and be the setting of kick-backing, and the terminal biggest travel distance of supporting rod is no longer than through wires hole central point.

Has the advantages that:

1. this kind of low-voltage switch board complete set fault indicator is provided with the movable rod, and the movable rod utilizes the screw thread regulation to be located through wires hole internal position to rely on first solenoid circular telegram to produce magnetic field suction, and then make two solid fixed splint attract each other under the magnetic field effect and be close to, thereby realize that two solid fixed splint press from both sides tight fixed to the sensing cable, and realize the dual fixed to the sensing cable under the extrusion of cooperation locking top cap, thereby effectual improvement is fixed to multiunit sensing cable.

2. Be provided with the gim peg, utilize hexagonal spanner in the screwing to move the screw rod and promote the sliding plate and connect the electric piece to be close to each other until the laminating for second solenoid circular telegram produces the magnetic field, and attract the two of permanent magnet and iron box and adsorb under the effect of magnetic field suction, synchronous drive gim peg card is gone into and is realized fixing in the open slot, and then make the gim peg can be quick carry out the buckle to the annular plate after second solenoid circular telegram and fix, dismouting efficiency and the fixed steadiness of annular plate when having improved the annular plate use greatly.

3. Be provided with the connecting rod, after the connecting rod was embedded in interior spout, spacing the unable rotation of having realized the connecting rod including the spout inside through hexagonal prism's connecting rod, realized the unable rotation of fixed bolt pole equally to the situation that the unable interlock of screw thread can not appear when making interior screw rod twist takes place.

Drawings

Fig. 1 is a schematic overall plan view of the present invention.

Fig. 2 is a schematic perspective view of the indicator main unit according to the present invention.

Fig. 3 is a schematic perspective view of the short circuit sensor according to the present invention.

Fig. 4 is a schematic cross-sectional view of the terminal according to the present invention.

Fig. 5 is a schematic front sectional view of the short circuit sensor according to the present invention.

Fig. 6 is a schematic top view of the wiring terminal of the present invention.

Fig. 7 is an enlarged schematic view of the structure at a in fig. 5 according to the present invention.

Fig. 8 is an enlarged view of the structure at B in fig. 6 according to the present invention.

Fig. 9 is a perspective view of the fixing bolt of the present invention.

Fig. 10 is an enlarged view of the structure of fig. 7 at C according to the present invention.

In FIGS. 1-10: 1-an indicator host; 101-a patch panel; 102-a binding post; 1021-a push switch; 103-locking top cap; 104-a stationary tube; 1041-inner rod; 1042 — a first electromagnetic coil; 1043-a movable rod; 1044-a fixed splint; 105-threading holes; 106-clamping bar; 2-short circuit sensor; 201-annular plate; 2011-open slots; 202-a squeeze bar; 203-fixing the bolt rod; 2031-internal screw; 2032-connecting rod; 2033-permanent magnet; 204-a second electromagnetic coil; 2041-a power connection block; 2042-a sliding plate; 2043-iron box; 205-magnetic insulation box; 2051-inner runner; 3-a power supply cable; 4-a ground sensor; 5-sensing cables.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-10, in an embodiment of the present invention, a fault indicator for a low-voltage switchgear assembly includes an indicator main unit 1, a wiring board 101, a terminal 102, a push switch 1021, a locking top cap 103, a fixed pipe 104, an inner rod 1041, a first electromagnetic coil 1042, a movable rod 1043, a fixed clamp 1044, a threading hole 105, a clamping rod 106, a short-circuit sensor 2, and a ring plate 201, the indicator comprises an open groove 2011, an extrusion rod 202, a fixed bolt rod 203, an internal screw 2031, a connecting rod 2032, a permanent magnet 2033, a second electromagnetic coil 204, a power connection block 2041, a sliding plate 2042, an iron box 2043, a magnetism insulation box 205, an internal chute 2051, a power supply cable 3, a grounding sensor 4 and a sensing cable 5, wherein the indicator host 1 is connected with the short-circuit sensor 2 and the grounding sensor 4 through the sensing cable 5, the short-circuit sensor 2 is nested on the outer surface of a branch cable of the power supply cable 3, and the grounding sensor 4 is nested on the outer surface of the power supply cable 3;

the top of the indicator host 1 is fixedly connected with a wiring board 101 and a wiring terminal 102 respectively, the top of the wiring terminal 102 is provided with a locking top cap 103 through thread nesting, a fixed pipe 104 is embedded in the wiring terminal 102, three press switches 1021 are embedded in the periphery of the bottom of the wiring terminal 102, an inner rod 1041 is embedded in the fixed pipe 104, a threading hole 105 is formed in an opening in the fixed pipe 104, a first electromagnetic coil 1042 is fixedly connected to the periphery of the inner rod 1041, a movable rod 1043 is embedded in the first electromagnetic coil 1042 through threads, a fixed clamp 1044 is fixedly connected to the tail end of the movable rod 1043, the movable rod 1043 and the fixed clamp 1044 are made of iron materials, a clamping rod 106 is slidably arranged in the fixed pipe 104 and located at the threading hole 105, and a fixed clamp 1044 is arranged;

the top of the short-circuit sensor 2 is provided with an annular plate 201 in an embedded mode, the top of the annular plate 201 is provided with a pressing rod 202 in an embedded mode, an open groove 2011 is formed in the bottom of the annular plate 201, a fixing bolt rod 203 is arranged at the joint of the left side and the open groove 2011 in the embedded mode, a magnetism-isolating box 205 is arranged in the embedded mode in the short-circuit sensor 2, a second electromagnetic coil 204 is fixedly connected to the inside of the magnetism-isolating box 205, an inner chute 2051 is formed in the opening of the inside of the magnetism-isolating box 205, an inner threaded rod 2031 is connected to the inside of the fixing bolt rod 203 in a rotating mode, a connecting rod 2032 is fixedly connected to the left end of the fixing bolt rod 203, a permanent magnet 2033 is fixedly connected to the left end of the connecting rod 2032, an iron box 2043 is fixedly connected to one end of the second electromagnetic coil 204 close to the connecting rod.

In the embodiment of the present invention, the first electromagnetic coil 1042 is electrically connected to the push switch 1021 in a one-to-one correspondence manner, a magnetic field generated by energizing the first electromagnetic coil 1042 acts on the two fixing clamp plates 1044, and the two fixing clamp plates 1044 are attracted to each other by a magnetic field attraction force, and the two fixing clamp plates 1044 are attracted to each other by energizing the first electromagnetic coil 1042, so that the two fixing clamp plates 1044 are clamped and fixed to the sensing cables 5, and the sensing cables 5 are doubly fixed by being pressed by the locking top cap 103, thereby effectively improving the fixation of the plurality of groups of sensing cables 5.

In the embodiment of the invention, the fixing bolt rod 203 is electrified through the second electromagnetic coil 204 to generate magnetic field attraction force to be fixedly adsorbed with the iron box 2043, the widest part of the fixing bolt rod 203 is matched with the open groove 2011, an inner hexagonal wrench is utilized to screw the inner screw 2031 to push the sliding plate 2042 to be close to the power connection block 2041 until the sliding plate 2041 is attached to the power connection block, so that the second electromagnetic coil 204 is electrified to generate a magnetic field, the permanent magnet 2033 and the iron box 2043 are attracted under the action of the magnetic field attraction force, the fixing bolt rod 203 is synchronously driven to be clamped into the open groove 2011 to realize fixation, and then the fixing bolt rod 203 can rapidly clamp and fix the annular plate 201 after the second electromagnetic coil 204 is electrified, thereby greatly improving the assembly and disassembly efficiency and the fixing stability of the annular plate 201 when the annular plate.

In the embodiment of the present invention, the internal screw 2031 advances by engaging the threads to push the sliding plate 2042 to approach and attach to the power connection block 2041, and a regular hexagonal groove is formed at one end of the external portion of the internal screw 2031, so that the internal screw 2031 pushes the sliding plate 2042 and the power connection block 2041 to approach and attach to each other, and then the second electromagnetic coil 204 is energized, thereby promoting the generation of magnetic field attraction.

In the embodiment of the invention, the cross section of the binding post 102 is in a horn shape with a small top and a large bottom, the thread is arranged on the outer surface of the top of the binding post 102 and is matched with the locking top cap 103, and the top of the binding post 102 is provided with the opening, so that when the locking top cap 103 is connected with the top of the binding post 102, the locking top cap 103 presses the top end of the binding post 102 inwards through meshing of the thread, and further, the sensing cable 5 is extruded and fixed.

In the embodiment of the invention, the whole connecting rod 2032 is arranged in a regular hexagonal prism shape, the size and the shape of the connecting rod 2032 are matched with the inner diameter and the shape of the inner chute 2051, after the connecting rod 2032 is embedded in the inner chute 2051, the connecting rod 2032 cannot rotate in the inner chute 2051 through the limitation of the hexagonal prism-shaped connecting rod 2032, and the fixed bolt rod 203 cannot rotate, so that the situation that the threads cannot be engaged when the inner bolt 2031 is screwed can be avoided.

In the embodiment of the present invention, the spring disposed between the clamping rod 106 and the fixing tube 104 is configured to be resilient, and the maximum travel distance of the tail end of the clamping rod 106 does not exceed the center point of the threading hole 105, so that the magnetic field disappears after the first electromagnetic coil 1042 is powered off, and then the two fixing splints 1044 loose after losing the mutual attraction, so that the clamping rod 106 is pulled and retracted by the contraction of the spring, and the sensor cable 5 is conveniently taken out.

Wherein, a spring is arranged between the iron box 2043 and the sliding plate 2042 for connection.

The working principle is as follows: when the fault indicator for the low-voltage complete power distribution cabinet is used, firstly, the indicator host 1, the short-circuit sensor 2 and the grounding sensor 4 are respectively and correspondingly installed at corresponding positions of the power distribution cabinet, meanwhile, the indicator host 1, the short-circuit sensor 2 and the grounding sensor 4 are mutually connected by using the sensing cable 5, when the wiring terminal 102 is connected with the sensing cable 5, firstly, the sensing cable 5 is inserted into the threading hole 105, then, the press switch 1021 is pressed down to electrify the corresponding first electromagnetic coil 1042, the first electromagnetic coil 1042 generates magnetic field attraction after being electrified, and then the two fixing splints 1044 are mutually attracted and close under the action of a magnetic field, so that the two fixing splints 1044 clamp and fix the sensing cable 5, and the double fixing of the sensing cable 5 is realized under the extrusion of the locking top cap 103, thereby effectively improving the fixing of a plurality of groups of sensing cables 5, when the short-circuit sensor 2 is connected with the power supply cable 3, firstly, the annular plate 201 is loosened, the power supply cable 3 is sleeved by the annular plate 201, the fixing bolt rod 203 penetrates through the annular plate 201 and then is inserted into the inner chute 2051 after being sleeved, the inner screw 2031 is screwed by an inner hexagonal wrench to push the sliding plate 2042 and the power connection block 2041 to be close to each other until being attached, so that the second electromagnetic coil 204 is electrified to generate a magnetic field, the permanent magnet 2033 and the iron box 2043 are attracted under the action of the attraction force of the magnetic field, the fixing bolt rod 203 is synchronously driven to be clamped into the open slot 2011 to realize fixation, and then the fixing bolt rod 203 can quickly clamp and fix the annular plate 201 after the second electromagnetic coil 204 is electrified, so that the assembly and disassembly efficiency and the fixation stability of the annular plate 201 when the annular plate 201 is used are;

when the sensing cable 5 needs to be taken out of the binding post 102, the press switch 1021 can be pressed again to cut off the power of the first electromagnetic coil 1042, the magnetic field disappears after the first electromagnetic coil 1042 is cut off, and then the two fixing clamp plates 1044 are loosened after the mutual attraction force is lost, so that the clamping rod 106 is pulled and pulled down to be retracted under the contraction of the spring, and the taking out of the sensing cable 5 is facilitated;

if the short-circuit sensor 2 needs to be separated from the power supply cable 3, the inner screw 2031 can be unscrewed by using a wrench, so that the sliding plate 2042 loses the extrusion force connected with the power connection block 2041 and is quickly separated from the power connection block 2041 under the resilience of the spring, the second electromagnetic coil 204 is powered off after separation, the magnetic field disappears, the fixing bolt rod 203 is loosened and can be pulled outwards, the annular plate 201 is quickly separated from the short-circuit sensor 2, and the purpose of separating the short-circuit sensor 2 from the power supply cable 3 is achieved.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.

Claims

1. The utility model provides a low-voltage switch board fault indicator in complete set, includes indicator host computer (1), short circuit sensor (2), power supply cable (3), earthing sensor (4) and sensing cable (5), its characterized in that: the indicator main machine (1) is connected with the short-circuit sensor (2) and the grounding sensor (4) through a sensing cable (5), the short-circuit sensor (2) is nested on the outer surface of a branch cable of the power supply cable (3), and the grounding sensor (4) is nested on the outer surface of the power supply cable (3);

the indicator main unit comprises an indicator main unit (1), wherein the top of the indicator main unit (1) is fixedly connected with a wiring board (101) and a wiring terminal (102) respectively, the top of the wiring terminal (102) is provided with a locking top cap (103) through thread nesting, a fixed pipe (104) is arranged in the wiring terminal (102) in an embedded mode, three press switches (1021) are arranged on the periphery of the bottom of the wiring terminal (102) in an embedded mode, an inner rod (1041) is arranged in the fixed pipe (104) in an embedded mode, a threading hole (105) is formed in an inner opening of the fixed pipe (104), first electromagnetic coils (1042) are fixedly connected on the periphery of the inner rod (1041), a movable rod (1043) is arranged in the first electromagnetic coil (1042) in an embedded mode through threads, a fixed clamp plate (1044) is fixedly connected to the tail end of the movable rod (1043), the movable rod (1043) and the fixed clamp plate (1044, the tail end of the clamping rod (106) is simultaneously provided with a fixed splint (1044);

the embedded annular plate (201) that is provided with in short circuit sensor (2) top, the embedding of annular plate (201) top is provided with squeeze bar (202), annular plate (201) bottom opening is provided with open slot (2011), the embedding of short circuit sensor (2) left and right sides and open slot (2011) junction is provided with fixed tie rod (203), the inside embedding of short circuit sensor (2) is provided with magnetism-insulating box (205), magnetism-insulating box (205) inside fixedly connected with second solenoid (204), magnetism-insulating box (205) inside opening is provided with interior spout (2051), fixed tie rod (203) internal rotation is connected with interior screw rod (2031), fixed tie rod (203) left end fixedly connected with connecting rod (2032), connecting rod (2032) left end fixedly connected with permanent magnet (2033), second solenoid (204) are close to connecting rod (2032) one end fixedly connected with iron box (2043), the inside left side fixedly connected with of iron box (2043) connects electric block (2041), the inside slip of iron box (2043) is provided with sliding plate (2042), and is equipped with the spring between sliding plate (2042) and iron box (2043) inside.

2. The fault indicator of a low-voltage switchgear panel according to claim 1, characterized in that: the first electromagnetic coils (1042) are electrically connected with the press switches (1021) in a one-to-one correspondence mode, magnetic fields generated by electrifying the first electromagnetic coils (1042) act on the two fixing clamp plates (1044), and the two fixing clamp plates (1044) are attracted and close to each other through magnetic field attraction.

3. The fault indicator of a low-voltage switchgear panel according to claim 1, characterized in that: the fixing bolt rod (203) is fixedly adsorbed with the iron box (2043) through the magnetic field attraction generated by electrifying the second electromagnetic coil (204), and the widest part of the fixing bolt rod (203) is matched with the open slot (2011).

4. The fault indicator of a low-voltage switchgear panel according to claim 1, characterized in that: the internal screw (2031) advances by meshing of the threads so as to push the sliding plate (2042) to approach and attach to the direction of the power connection block (2041), and a regular hexagonal groove is formed in one end of the outer part of the internal screw (2031).

5. The fault indicator of a low-voltage switchgear panel according to claim 1, characterized in that: the cross section of the binding post (102) is in a horn-shaped arrangement with a small upper part and a large lower part, threads are arranged on the outer surface of the top of the binding post (102) and are matched with the locking top cap (103), and an opening is formed in the top of the binding post (102).

6. The fault indicator of a low-voltage switchgear panel according to claim 1, characterized in that: the connecting rod (2032) is integrally arranged in a regular hexagonal prism, and the size and the shape of the connecting rod (2032) are matched with the inner diameter and the shape of the inner chute (2051).

7. The fault indicator of a low-voltage switchgear panel according to claim 1, characterized in that: a spring is arranged between the clamping rod (106) and the fixed pipe (104) and is arranged in a rebounding mode, and the maximum traveling distance of the tail end of the clamping rod (106) does not exceed the central point of the threading hole (105).