CN218471426U - Automatic alarm device for short-circuit line breakage - Google Patents
Automatic alarm device for short-circuit line breakage Download PDFInfo
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- CN218471426U CN218471426U CN202222368198.1U CN202222368198U CN218471426U CN 218471426 U CN218471426 U CN 218471426U CN 202222368198 U CN202222368198 U CN 202222368198U CN 218471426 U CN218471426 U CN 218471426U
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Abstract
The utility model discloses a shorting stub broken string autoalarm, including broken string alarm, first binding clip, second binding clip and shorting stub, be equipped with the punching hole that is used for passing the shorting stub on the broken string alarm, the shorting stub passes from punching hole, and the one end and the first binding clip electricity of shorting stub are connected, and the other end and the second binding clip electricity of shorting stub are connected, the broken string alarm include punching current sensor, current detection circuit, power and alarm, punching current sensor and alarm are connected with current detection circuit electricity respectively, current detection circuit is connected with the power electricity. The utility model discloses an automatic alarm device of short-circuit line disconnection, operating personnel can live working, change the leakage ampere meter of arrester, can ensure the safe operation of system in the process of installing or changing the online monitoring device of arrester additional; because set up the broken string alarm on the short circuit line, can ensure the safety of operating personnel electrified in-process of changing arrester on-line monitoring device.
Description
Technical Field
The utility model relates to a distribution equipment technical field especially relates to a shorting stub broken string autoalarm.
Background
In the electric power operation and maintenance, an online arrester monitoring device needs to be additionally installed or an arrester monitor needs to be replaced under the condition of electrification, short-circuit wires need to be used in the operation step to short-circuit the two sides of the arrester monitor, and then the original grounding is detached by using a tool, so that the equipment is additionally installed or replaced. Under the live working condition, the lightning arrester still bears the function of releasing overvoltage, and if the short-circuit wire falls off or the connection is unreliable to cause disconnection in the construction process, the lightning arrester loses the protection effect, and huge potential safety hazards are caused to the safe operation of a system.
Disclosure of Invention
An object of the utility model is to in the background art prior art in, install arrester on-line monitoring device additional under the electrified condition, or when changing the arrester monitor, if appear that the shorting stub drops or connect when unreliable leading to the broken string, the arrester will lose the guard action, causes huge potential safety hazard scheduling problem to the safe operation of system, provides a shorting stub broken string autoalarm.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a shorting stub broken string autoalarm, includes broken string alarm, first binding clip, second binding clip and shorting stub, is equipped with the punching hole that is used for passing the shorting stub on the broken string alarm, and the shorting stub passes from the punching hole, and the one end and the first binding clip electricity of shorting stub are connected, and the other end and the second binding clip electricity of shorting stub are connected, the broken string alarm include punching current sensor, current detection circuit, power and alarm, punching current sensor and alarm are connected with the current detection circuit electricity respectively, the current detection circuit is connected with the power electricity.
As a further improvement of the scheme, the current detection circuit comprises an MCU control circuit, an operational amplifier circuit and an ADC acquisition circuit, the feed-through current sensor is electrically connected with the input end of the operational amplifier circuit, the output end of the operational amplifier circuit is electrically connected with the input end of the ADC acquisition circuit, the output end of the ADC acquisition circuit is connected with the MCU control circuit, and the alarm is electrically connected with the output end of the MCU control circuit.
As a further improvement of the above scheme, the disconnection alarm is further provided with a power switch, a warning arming/disarming button, a power indicator lamp and a status indicator lamp, wherein the power switch, the warning arming/disarming button, the power indicator lamp and the status indicator lamp are respectively and electrically connected with the current detection circuit.
As a further improvement of the scheme, the state indicator lamps comprise a normal wiring indicator lamp, a broken wiring indicator lamp and an unreliable connection indicator lamp, and the normal wiring indicator lamp, the broken wiring indicator lamp and the unreliable connection indicator lamp are all electrically connected with the current detection circuit.
As a further improvement of the above scheme, the first and second jointing clamps include an insulating rod, a wire clamping head and a wire clamping seat, the wire clamping seat is a conductor, the wire clamping seats of the first and second jointing clamps correspond to the two ends of the short-circuit wire respectively and are electrically connected, a screw rod is arranged at the end of the insulating rod, a threaded hole is formed in the wire clamping seat, the wire clamping seat is in threaded fit with the screw rod through the threaded hole, a clamping portion is arranged at a position, far away from the threaded hole, on the wire clamping seat, the wire clamping head is movably connected to the end of the screw rod, and the wire clamping head is arranged opposite to the clamping portion.
As a further improvement of the above scheme, the anti-skid part is arranged on the surface of the wire clamping head opposite to the clamping part on the wire clamping seat.
As the further improvement of foretell scheme, the card line seat includes connecting seat, middle part connecting portion and joint portion, and joint portion passes through middle part connecting portion and connecting seat fixed connection, the screw hole sets up at connecting portion, and the axial of screw hole just right with joint portion, is equipped with the direction spacing groove on the side of middle part connecting portion orientation card line head, is equipped with the guide part at a side tip of card line head near middle part connecting portion, guide part and direction spacing groove sliding fit.
As a further improvement of the above scheme, a binding post is arranged on the wire clamping seat, and the end part of the short connecting wire is electrically connected with the binding post.
The utility model discloses has positive effect: 1) The utility model discloses a shorting stub disconnection autoalarm, when using, can connect on the ground row of arrester leakage ampere meter upper end and the ground row of lower extreme through first binding clip and second binding clip, because connect through the shorting stub between first binding clip and the second binding clip, the resistance of shorting stub is very little, is far less than the internal resistance of arrester leakage ampere meter, therefore arrester leakage ampere meter can flow from the shorting stub, make the electric current on the arrester leakage ampere meter become 0, operating personnel can live-line operation, change arrester leakage ampere meter, can ensure the safe operation of system in the in-process of installing additional or changing arrester on-line monitoring device; 2) Because the line break alarm is arranged on the short-circuit line, the line break alarm can detect the connection state of the first jointing clamp and the second jointing clamp with the ground bar at the upper end and the ground bar at the lower end of the leakage current meter of the lightning arrester, when the connection of the first jointing clamp or the second jointing clamp with the ground bar is unreliable or broken, the alarm can be given to the police, and an operator is prompted to check the connection between the upper jointing clamp and the ground bar in time, so that the fault can be timely eliminated, and the safe operation of the system in the process of replacing the online monitoring device of the lightning arrester in an electrified manner is ensured.
Drawings
Fig. 1 is a schematic view of the connection structure of the automatic short-circuit wire disconnection alarm device of the present invention.
Fig. 2 is a schematic view of a connection structure of the second binding clip and the short-wire alarm.
Fig. 3 is a schematic diagram of the disconnection alarm.
The reference symbols in the figures are: the alarm device 1 that breaks a telephone switchboard, punch-through current sensor 11, current detection circuit 12, MCU control circuit 121, fortune are put circuit 122, ADC acquisition circuit 123, warning deployment/withdrawal button 124, status indicator 125, alarm 126, power 13, first binding clip 2, second binding clip 3, insulating rod 31, screw rod 311, card stub 32, antiskid 321, card line seat 33, joint portion 331, terminal 332, short-circuit connection 4, ammeter 5 is revealed to the arrester.
Detailed Description
The technical solutions of the present invention are described below clearly and completely by way of examples, and it is obvious that the described examples are only some examples of the present invention, but not all examples. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The automatic alarm device for the broken short-circuit wire as shown in fig. 1 comprises a broken wire alarm 1, a first jointing clamp 2, a second jointing clamp 3 and a short-circuit wire 4.
As shown in fig. 3, the disconnection alarm 1 includes a feedthrough current sensor 11, a current detection circuit 12, a power supply 13, and an alarm 126, the feedthrough current sensor 11 and the alarm 126 are electrically connected to the current detection circuit 12, respectively, and the current detection circuit 12 is electrically connected to the power supply 13.
As shown in fig. 3, the current detection circuit 12 includes an MCU control circuit 121, an operational amplifier circuit 122 and an ADC acquisition circuit 123, the feedthrough current sensor 11 is electrically connected to an input terminal of the operational amplifier circuit 122, an output terminal of the operational amplifier circuit 122 is electrically connected to an input terminal of the ADC acquisition circuit 123, an output terminal of the ADC acquisition circuit 123 is connected to the MCU control circuit 121, and the alarm is electrically connected to an output terminal of the MCU control circuit 121.
The wire break alarm 1 is further provided with a power switch, a warning arming/disarming button 124, a power indicator lamp and a status indicator lamp 125, wherein the power switch, the warning arming/disarming button 124, the power indicator lamp and the status indicator lamp 125 are respectively and electrically connected with the MCU control circuit 121 of the current detection circuit 12.
As a preferred embodiment, in order to facilitate the judgment of the cause of the fault, so as to facilitate the operator to perform the corresponding circuit inspection and to eliminate the fault, the status indicator lamp 125 includes a normal wiring indicator lamp, a broken wiring indicator lamp and an unreliable connection indicator lamp, and the normal wiring indicator lamp, the broken wiring indicator lamp and the unreliable connection indicator lamp are all electrically connected to the current detection circuit.
The wire breakage alarm 1 is provided with a through hole for penetrating the short-circuit wire 4, the short-circuit wire 4 penetrates through the through hole, one end of the short-circuit wire 4 is electrically connected with the first jointing clamp 2, and the other end of the short-circuit wire 4 is electrically connected with the second jointing clamp 3.
As shown in fig. 2, the first and second jointing clamps 2 and 3 each include an insulating rod 31, a wire clamping head 32 and a wire clamping base 33, the wire clamping base 33 is a conductor, the wire clamping base 33 of the first and second jointing clamps 2 and 3 is electrically connected with the two ends of the short-circuit wire 4, a screw 311 is disposed at the end of the insulating rod 31, a threaded hole is disposed on the wire clamping base 33, the wire clamping base 33 is in threaded fit with the screw 311 through the threaded hole, a clamping portion 331 is disposed at a position on the wire clamping base 33 away from the threaded hole, the wire clamping head 32 is movably connected to the end of the screw 311, and the wire clamping head 32 is disposed opposite to the clamping portion 331.
As shown in fig. 2, as a preferred embodiment, in order to make the connection of the first and second wire clamps 2 and 3 to the ground row more reliable, a non-slip portion 321 is provided on the surface of the wire clamping head 32 opposite to the clamping portion 331 on the wire clamping base 33. The anti-slip portion 321 may have various embodiments, for example, anti-slip teeth may be disposed on the opposite surfaces of the wire clamping head and the wire clamping portion of the wire clamping base, so as to increase the clamping force on the ground row, and make the connection between the first and second wire clamps and the ground row more reliable.
As shown in fig. 2, as a preferred embodiment, the wire clamping seat 33 includes a connecting seat, a middle connecting portion and a clamping portion 331, the clamping portion 331 is fixedly connected to the connecting seat through the middle connecting portion, the threaded hole is formed in the connecting portion, the axial direction of the threaded hole is opposite to the clamping portion, a guide limiting groove is formed in a side face of the middle connecting portion facing the wire clamping head, a guide portion is arranged at an end portion of the wire clamping head, close to the middle connecting portion, and is in sliding fit with the guide limiting groove. The shape of the wire-clamping seat 33 can be designed according to the requirement, for example, the wire-clamping seat can be designed to be approximately U-shaped. Through setting up the direction spacing groove, can make card thread end 32 only can slide along the direction spacing groove along with the rotation of screw rod 311, slide towards the joint portion of card line seat 33 or keep away from the joint portion and slide, can not rotate relative the screw rod, therefore can realize with the locking connection or the disconnection of ground row.
As shown in fig. 2, in a preferred embodiment, the insulating rod of the second terminal 3 passes through the housing of the disconnection warning device 1, and the second terminal 3 is rotatably fitted to the housing of the disconnection warning device 1. Through this kind of setting, can set up disconnection alarm 1 on the insulating rod 31 of second binding clip 3, avoid disconnection alarm 1 to receive the influence of dead weight and take place relative displacement with shorting stub 4, ensure the accuracy of current detection on shorting stub 4 of disconnection alarm 1.
As shown in fig. 2, as a preferred embodiment, a terminal 332 is provided on the wire holder 33, and an end of the shorting stub 4 is electrically connected to the terminal 332. The shorting stub 4 may be electrically connected to the terminal 332 by welding, or may be electrically connected by a connector such as a bolt or a pressing piece.
As shown in fig. 3, the automatic alarm device for short-circuit line breakage of the utility model comprises the following steps: s1, clamping a first jointing clamp 2 to a ground bar at the lower end of an original lightning arrester leakage ammeter 5 through an insulating operation rod, and locking and fixing; s2, clamping the second jointing clamp 3 to a ground bar at the upper end of the existing lightning arrester leakage current meter 5 through an insulating operation rod, and locking and fixing the second jointing clamp; s3, opening a switch of the disconnection alarm 1, and starting leakage current collection; s4, collecting leakage current for N times within a set time T; s5, judging whether the number of times of normally collecting the leakage current is N, if so, driving a normal indicator light to be on, and entering a step S6; on the contrary, if the number of times of normally collecting the current is not N, judging whether the number of times of normally collecting the leakage current is 0, if so, driving a disconnection indicating lamp to be on to prompt an operator to check the connection condition of the first jointing clamp 2 and the second jointing clamp 3; on the contrary, if the number of times of normally collecting the leakage current is not 0, the unreliable wiring indicator lamp is driven to be on, and an operator is prompted to check the connection condition of the first wiring clamp 2 and the second wiring clamp 3; s6, checking whether the current indication value of the original leakage current meter is 0, and if the current indication value is 0, pressing a warning and defense button of the short-circuit wire automatic alarm device; s7, collecting N times of current within the time T; s8, judging whether the number of times of normally collecting current is N, if so, returning to the step S7, if not, judging whether the number of times of normally collecting current is 0, if so, driving a disconnection indicating lamp to be on, and giving an alarm to prompt a worker; if not 0, the driving unreliable wiring indicator lamp is turned on, and the alarm gives an alarm to prompt the staff.
The utility model discloses a short-circuit wire disconnection autoalarm, can connect on arrester leakage ampere meter upper end and the ground row of lower extreme through first binding clip and second binding clip, because connect through the short-circuit wire between first binding clip and the second binding clip, the resistance of short-circuit wire is very little, is far less than the internal resistance of arrester leakage ampere meter, therefore it can flow from the short-circuit wire to let the electric current on the arrester leakage ampere meter become 0 to let out leakage current, operating personnel can live working, change arrester leakage ampere meter, can ensure the safe operation of system in the process of installing or changing arrester on-line monitoring devices additional; because the line break alarm is arranged on the short-circuit line, the line break alarm can detect the connection state of the first jointing clamp and the second jointing clamp with the ground bar at the upper end and the ground bar at the lower end of the leakage current meter of the lightning arrester, when the connection of the first jointing clamp or the second jointing clamp with the ground bar is unreliable or broken, the alarm can be given to the police, and an operator is prompted to check the connection between the upper jointing clamp and the ground bar in time, so that the fault can be timely eliminated, and the safe operation of the system in the process of replacing the online monitoring device of the lightning arrester in an electrified manner is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a shorting stub broken string autoalarm which characterized in that: including disconnected line alarm, first binding clip, second binding clip and shorting stub, be equipped with the punching hole that is used for passing the shorting stub on disconnected line alarm, the shorting stub passes from the punching hole, and the one end and the first binding clip electricity of shorting stub are connected, and the other end and the second binding clip electricity of shorting stub are connected, disconnected line alarm include punching current sensor, current detection circuit, power and alarm, punching current sensor and alarm are connected with the current detection circuit electricity respectively, the current detection circuit is connected with the power electricity.
2. The automatic alarm device for short-circuit wire disconnection according to claim 1, wherein: the current detection circuit comprises an MCU control circuit, an operational amplifier circuit and an ADC acquisition circuit, the feed-through current sensor is electrically connected with the input end of the operational amplifier circuit, the output end of the operational amplifier circuit is electrically connected with the input end of the ADC acquisition circuit, the output end of the ADC acquisition circuit is connected with the MCU control circuit, and the alarm is electrically connected with the output end of the MCU control circuit.
3. The automatic alarm device for short-circuit wire disconnection according to claim 1, wherein: the wire break alarm is also provided with a power switch, a warning arming/disarming button, a power indicator lamp and a status indicator lamp, wherein the power switch, the warning arming/disarming button, the power indicator lamp and the status indicator lamp are respectively and electrically connected with the current detection circuit.
4. The automatic alarm device for short-circuit wire disconnection according to claim 3, wherein: the state indicator lamp comprises a normal wiring indicator lamp, a broken wire indicator lamp and an unreliable connection indicator lamp, and the normal wiring indicator lamp, the broken wire indicator lamp and the unreliable connection indicator lamp are all electrically connected with the current detection circuit.
5. The automatic alarm device for short-circuit wire disconnection according to claim 1, wherein: first binding clip and second binding clip all include insulating stick, card end of a thread and card line seat, the card line seat is the conductor, and the card line seat of first binding clip and second binding clip corresponds the electricity with the both ends of shorting stub respectively and is connected, is equipped with the screw rod at the tip of insulating stick, is equipped with the screw hole on the card line seat, the card line seat passes through screw hole and screw rod screw-thread fit, the position of keeping away from the screw hole on the card line seat is equipped with joint portion, card end of a thread swing joint is at the tip of screw rod, card end of a thread sets up with joint portion relatively.
6. The automatic alarm device for short-circuit wire disconnection according to claim 5, wherein: and the anti-skid parts are arranged on the surfaces of the wire clamping head opposite to the clamping parts on the wire clamping seat.
7. The automatic alarm device for short-circuit wire disconnection according to claim 5, wherein: the wire clamping seat comprises a connecting seat, a middle connecting portion and a clamping portion, the clamping portion is fixedly connected with the connecting seat through the middle connecting portion, the threaded hole is formed in the connecting portion, the axial direction of the threaded hole is right opposite to the clamping portion, a guide limiting groove is formed in one side face, facing the wire clamping head, of the middle connecting portion, a guide portion is arranged at one side end portion, close to the middle connecting portion, of the wire clamping head, and the guide portion is in sliding fit with the guide limiting groove.
8. The automatic alarm device for short-circuit wire disconnection according to claim 5, wherein: and the insulating rod of the second jointing clamp penetrates through the shell of the broken wire alarm, and the second jointing clamp is in running fit with the shell of the broken wire alarm.
9. The automatic alarm device for short-circuit wire disconnection according to claim 5, wherein: and a wiring terminal is arranged on the wire clamping seat, and the end part of the short wiring is electrically connected with the wiring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222368198.1U CN218471426U (en) | 2022-09-06 | 2022-09-06 | Automatic alarm device for short-circuit line breakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222368198.1U CN218471426U (en) | 2022-09-06 | 2022-09-06 | Automatic alarm device for short-circuit line breakage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218471426U true CN218471426U (en) | 2023-02-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222368198.1U Active CN218471426U (en) | 2022-09-06 | 2022-09-06 | Automatic alarm device for short-circuit line breakage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218471426U (en) |
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2022
- 2022-09-06 CN CN202222368198.1U patent/CN218471426U/en active Active
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