CN209894876U - System for realizing non-contact high-voltage live indication by using through-wall terminal - Google Patents
System for realizing non-contact high-voltage live indication by using through-wall terminal Download PDFInfo
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- CN209894876U CN209894876U CN201920558484.XU CN201920558484U CN209894876U CN 209894876 U CN209894876 U CN 209894876U CN 201920558484 U CN201920558484 U CN 201920558484U CN 209894876 U CN209894876 U CN 209894876U
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Abstract
The utility model belongs to the technical field of the high-voltage electricity indicates, concrete technical scheme is: a system for realizing non-contact high-voltage live indication by using a through-wall terminal comprises a three-phase alternating-current power supply, the through-wall terminal and a rectification and live indication circuit, wherein a metal annular screw sleeve on the through-wall terminal is separated from a central conductor by an insulating medium, a metal induction ring is separated from the central conductor by the insulating medium, the metal annular screw sleeve is connected with a high-voltage device box body through-wall, the centers of two sides of the central conductor are respectively provided with an internal thread hole, the internal thread holes are connected with a high-voltage bus of the three-phase alternating-current power supply through a lead, an outer nut of the metal induction ring is connected with the rectification and live indication circuit, and the capacitance effect of the metal induction ring, the induction voltage that size output expectation that can rational design wear the wall terminal need not additionally to increase sensor and working power supply and can realize the electrified instruction of non-contact high pressure, has solved the electrified potential safety hazard difficult problem of instructing of mine high voltage distribution equipment.
Description
Technical Field
The utility model belongs to the technical field of the high voltage live instructs, concretely relates to utilize system that wall terminal realized non-contact high voltage live and instruct.
Background
At present, a high-voltage live indicating system in a mine high-voltage power distribution device and a mobile substation consists of a high-voltage sensor and a live indicating device. The high-voltage live indicating system indicates the live state of the high-voltage incoming line, provides a basis for correct and reasonable operation of the device, and provides important guarantee for the safety of operation and maintenance personnel. However, most high-voltage sensors are directly connected with high voltage, so that high-voltage breakdown is easily caused, accidents are caused, the reliability and durability of a high-voltage live indication system are directly influenced by the performance of the sensors, and hidden dangers are brought to mine safety. The existing non-contact high-voltage live indication system can realize high-voltage indication only by an additional power supply, the complexity of the system is increased, and the correct indication of the high-voltage live indication system is easily influenced by the on-off of an external power supply, so that misoperation is generated.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that prior art exists, the utility model provides an utilize to wear wall terminal to realize the system of non-contact high voltage live indication, need not to increase sensor and other external power source, the system installation is nimble.
In order to achieve the above object, the utility model adopts the following technical scheme: a system for realizing non-contact high-voltage live indication by using a through-wall terminal comprises a three-phase alternating-current power supply, the through-wall terminal and a rectification and live indication circuit.
The wall-penetrating terminal comprises a central conductor, a metal annular threaded sleeve and a metal induction ring, wherein the metal annular threaded sleeve is concentrically arranged with the central conductor, the metal induction ring is concentrically arranged with the central conductor, the metal annular threaded sleeve is separated from the central conductor through an insulating medium, the metal induction ring is separated from the central conductor through an insulating medium, the metal annular threaded sleeve is connected with a high-voltage device box body in a wall-penetrating mode, inner threaded holes are formed in the centers of two sides of the central conductor, the inner threaded holes are connected with a high-voltage bus of a three-phase alternating-current power supply through a lead, and a lead-out wire is.
The rectification and electrification indicating circuit comprises a voltage dependent resistor VR, a rectifier bridge D, a resistor R and a light emitting diode LED, wherein two ends of the voltage dependent resistor VR are connected with the metal induction ring in parallel, two ends of the voltage dependent resistor VR are connected with two input ends of the rectifier bridge D, and a first output end of the rectifier bridge D is connected with second output ends of the resistor R, the light emitting diode LED and the rectifier bridge D in sequence.
Among them, the center conductor is preferably a metal core rod.
Compared with the prior art, the utility model, specifically beneficial effect is embodied in: the utility model overcomes there is potential safety hazard, the unreliable drawback poor with the durability in the current electrified indicating system of mine high voltage distribution equipment, utilizes metal induction ring and electric capacity principle on the wall terminal of wearing, need not additionally to increase sensor and working power supply and can realize that non-contact high voltage is electrified to be instructed, and this high voltage indicating system installation is nimble, instruct reliably, has solved the potential safety hazard difficult problem that the electrified instruction of mine high voltage distribution equipment.
Drawings
Fig. 1 is a block diagram of the system structure of the present invention.
Fig. 2 is a schematic sectional view of the through-wall terminal of fig. 1.
Fig. 3 is a schematic circuit diagram of the rectifying and charging indicating circuit in fig. 1.
Fig. 4 is a schematic connection diagram 1 of a rectifying and charging indicating circuit.
Fig. 5 is a schematic diagram of the specific connection of the rectifying and charging indicating circuit 2.
Fig. 6 is a schematic connection diagram of a specific connection of the rectifying and charging indicating circuit 3.
In the figure, 1 is a three-phase ac power supply, 2 is a wall-through terminal, 21 is a central conductor, 22 is a metal annular screw sleeve, 23 is a metal induction ring, 24 is an insulating medium, 25 is an internal threaded hole, 3 is a rectifying and electrification indicating circuit, 31 is a voltage dependent resistor VR, 32 is a rectifying bridge D, 33 is a resistor R, 34 is a light emitting diode LED, 35 is a first output terminal, and 36 is a second output terminal.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a system for implementing non-contact high-voltage live indication by using a wall-through terminal includes a three-phase ac power supply 1, a wall-through terminal 2, and a rectification and live indication circuit 3, wherein a central conductor 21 of the wall-through terminal 2 is connected with the three-phase ac power supply 1, and an input end of the rectification and live indication circuit 3 is connected with a nut on an outer side of a metal ring of the wall-through terminal 2 through a wire.
As shown in fig. 2, the wall-through terminal 2 includes a central conductor 21, a metal annular screw sleeve 22 concentrically arranged with the central conductor 21, and a metal induction ring 23 concentrically arranged with the central conductor 21, the metal annular screw sleeve 22 and the central conductor 21 are divided by an insulating medium 24, the metal induction ring 23 and the central conductor 21 are divided by an insulating medium 24, the metal annular screw sleeve 22 is connected with the high-voltage device box through the wall, the centers of both sides of the central conductor 21 are both provided with internal thread holes 25, and the internal thread holes 25 are connected with the high-voltage bus of the three-phase ac power supply 1 through a lead. The outer nut of the metal induction ring 23 leads out a wiring to the rectification and electrification indicating circuit 3, and the size of the wall-through terminal 2 can be reasonably designed and expected induction voltage can be output by utilizing the capacitance effect of the metal induction ring 23 on the wall-through terminal 2.
As shown in fig. 3, the rectifying and charging indicating circuit 3 includes a voltage dependent resistor VR31, a rectifying bridge D32, a resistor R33 and a light emitting diode LED34, two ends of the voltage dependent resistor VR31 are connected in parallel with the metal induction ring 23, a voltage dependent resistor VR31 is connected in parallel with outgoing lines of the metal induction ring 23 of the two through-wall terminals 2, two ends of the voltage dependent resistor VR31 are further connected with two input ends of the rectifying bridge D32, and a first output end 35 of the rectifying bridge D32 is sequentially connected with a resistor R33, the light emitting diode LED34 and a second output end 36 of the rectifying bridge D32.
As shown in fig. 4, 5 and 6, the rectifying and charging indicating circuit 3 is used to connect line voltages between different phases of the three-phase ac power supply 1.
Among them, the center conductor 21 is preferably a metal core rod.
The utility model discloses utilize metal induction ring 23 and electric capacity principle induction high voltage power supply voltage on the wall terminal 2, and then carry out contactless high voltage live and instruct, saved the sensor, high-voltage indicating system is nimble, reliably durable, has solved the potential safety hazard problem that mine high voltage distribution equipment instructed live, and the high voltage live in the specially adapted mine high voltage distribution device and the mobile substation instructs.
The foregoing is considered as illustrative and not restrictive of the preferred embodiments of the invention, and any modifications, equivalents and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (2)
1. A system for realizing non-contact high-voltage live indication by using a through-wall terminal is characterized by comprising a three-phase alternating-current power supply (1), a through-wall terminal (2) and a rectification and live indication circuit (3);
the wall-through terminal (2) comprises a central conductor (21), a metal annular screw sleeve (22) and a metal induction ring (23), wherein the metal annular screw sleeve (22) is concentrically arranged with the central conductor (21), the metal induction ring (23) is concentrically arranged with the central conductor (21), the metal annular screw sleeve (22) and the central conductor (21) are divided through an insulating medium (24), the metal induction ring (23) and the central conductor (21) are divided through the insulating medium (24), the centers of two sides of the central conductor (21) are respectively provided with an internal threaded hole (25), the internal threaded holes (25) are connected with a high-voltage bus of a three-phase power supply (alternating current 1) through a lead, and the metal induction ring (23) is connected with a lead wire;
rectification and electrified indicating circuit (3) include piezo-resistor VR (31), rectifier bridge D (32), resistance R (33) and emitting diode LED (34), both ends of piezo-resistor VR (31) both had been connected in parallel with metal induction ring (23), and the both ends of piezo-resistor VR (31) still are connected with two inputs of rectifier bridge D (32), first output (35) of rectifier bridge D (32) are connected with second output (36) of resistance R (33), emitting diode LED (34), rectifier bridge D (32) in proper order.
2. A system for non-contact indication of high voltage charge by means of a through-wall terminal according to claim 1, characterized in that the central conductor (21) is a metal core rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558484.XU CN209894876U (en) | 2019-04-23 | 2019-04-23 | System for realizing non-contact high-voltage live indication by using through-wall terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558484.XU CN209894876U (en) | 2019-04-23 | 2019-04-23 | System for realizing non-contact high-voltage live indication by using through-wall terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209894876U true CN209894876U (en) | 2020-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920558484.XU Active CN209894876U (en) | 2019-04-23 | 2019-04-23 | System for realizing non-contact high-voltage live indication by using through-wall terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209894876U (en) |
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2019
- 2019-04-23 CN CN201920558484.XU patent/CN209894876U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20210802 Address after: 030000 No. 1, Zone C, Binxi Industrial Park, comprehensive reform demonstration zone, Taiyuan City, Shanxi Province Patentee after: Shanxi Zidong Dibo Technology Co., Ltd Address before: 030024 Shanxi province Taiyuan city Berlin District Wan wa flow Road No. 66 Patentee before: TAIYUAN University OF SCIENCE AND TECHNOLOGY |