CN219041220U - High-voltage electrified display system - Google Patents
High-voltage electrified display system Download PDFInfo
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- CN219041220U CN219041220U CN202222889548.9U CN202222889548U CN219041220U CN 219041220 U CN219041220 U CN 219041220U CN 202222889548 U CN202222889548 U CN 202222889548U CN 219041220 U CN219041220 U CN 219041220U
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Abstract
The utility model discloses a high-voltage electrified display system, which comprises a power resistor and a short-circuit terminal; the three-phase electric input terminal is used for accessing three-phase alternating current and providing electric energy for the system through the transformation rectifying module; the control module is connected with a voltage sensor for detecting alternating current and controls the high-voltage indicator lamp according to a detection signal of the voltage sensor; after the transformation rectifying module is electrified, the switch coil corresponding to the switch terminal is driven to be conducted, and a power resistor for reducing voltage is connected in series between the output end of the transformation rectifying module and the coil; the short-circuit terminals are connected in parallel with the two ends of the power resistor, and are connected through wires when the driving capability needs to be improved; the multi-group switch terminals can ensure that the high-voltage live display system is provided with a plurality of terminals responding in an instant state, the short circuit of the power resistor can be realized through the cooperation of the short circuit terminals and the power resistor, the strong driving capability of the system is realized, and the short circuit terminals M, N are short-circuited by leads during assembly.
Description
Technical Field
The utility model relates to a high-voltage electrified display system.
Background
In the electric power field, in order to display whether high-voltage electric equipment such as a wire-incoming bus, a circuit breaker, a main transformer and the like in a switch cabinet is electrified to prevent electric misoperation, a high-voltage electrified display is required to be provided for providing information of the voltage state of a main circuit where the high-voltage electric equipment is detected for operation personnel. When the high-voltage electrical equipment is provided with an operating voltage, the electrified display emits a flash to remind people that the high-voltage electrical equipment in the switch cabinet is electrified with the operating voltage, and no indication is given when the high-voltage electrical equipment is not electrified. Specifically, the high-voltage live display is matched with the high-voltage sensor to form a high-voltage live display device system, is suitable for a switch cabinet with alternating current of 50/60Hz and rated voltage of 3.6-40.5kV, can reflect the live state of a high-voltage loop, and is generally arranged in a wire inlet bus, a circuit breaker, a main transformer circuit and other places needing to be displayed, and can prevent electric misoperation. When the equipment has operating voltage, the three-phase indicator lamp of the display emits light to indicate that the high-voltage equipment is electrified; no indication is given when no electricity is available. The existing high-voltage live display has a display function but weak load capacity, and particularly, in the case of weak bus voltage, the lower driving capacity of the secondary voltage is greatly weakened. And when humidity is large, the circuit board is easy to absorb moisture and short-circuit, so that when high-voltage power is input, the contacts cannot respond in time, and the electric cabinet is easy to lock and unreliable.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: the multi-load type high-voltage live display system is reliable in use and high in load capacity, and can be adjusted according to bus voltage.
In order to solve the technical problems, the utility model is solved by the following technical scheme: a high-voltage live display system comprises a three-phase electric input terminal, a power resistor, a control module, a plurality of groups of switch terminals and a short circuit terminal; the three-phase power input terminal is used for accessing three-phase alternating current and providing electric energy for the system through the transformation rectifying module; the control module is connected with a voltage sensor for detecting alternating current and controls the high-voltage indicator lamp according to a detection signal of the voltage sensor; the switching coil corresponding to the driving switch terminal is conducted after the voltage transformation rectifying module is electrified, and a power resistor for reducing voltage is connected in series between the output end of the voltage transformation rectifying module and the coil; the short-circuit terminals are connected in parallel with the two ends of the power resistor, and are connected with the short-circuit terminals through wires when the driving capability needs to be improved.
The automatic detection device comprises a voltage transformation rectifying module, a self-detection module and a power supply, wherein the voltage transformation rectifying module is connected with the voltage transformation rectifying module through a power switch and a self-detection switch; the self-checking switch has the advantages that through the self-checking switch, the self-checking of the high-voltage live display system can be performed under the condition of no high-voltage bus, so that the qualified detection in delivery and the self-checking after faults occur are ensured, the faults are determined to occur at the front end or the rear end, and the maintenance is convenient.
Further, one end of the switch terminal is connected with one wiring end of the electromagnetic lock, the other end of the switch terminal is connected with the positive electrode or the live wire of the external power supply, and the other wiring end of the electromagnetic lock is connected with the negative electrode or the zero line of the external power supply; the electromagnetic lock has the advantages that the reliable operation of the electromagnetic lock can be ensured when the bus incoming line is electrified to work through the arranged electromagnetic lock. The switch terminal is opened after the bus is electrified, the electromagnetic lock loop is instantly powered off, the armature of the electromagnetic lock is pressed by the spring to lock the switch cabinet, the switch cabinet cannot be opened under the high-voltage electrified state, and high-voltage electrified operation of personnel is avoided. When the bus is powered off, the coil of the switch terminal is powered off, the switch terminal is restored to a normally closed state, at the moment, the electromagnetic lock loop is powered on, the electromagnetic lock is attracted to the armature compression spring, and the switch cabinet can be opened.
Furthermore, the switch terminals are controlled by the same switch coil, or the switch terminals are controlled by a plurality of corresponding switch coils, and the switch coils are connected in parallel; the multi-group electromagnetic lock has the advantages that different use scenes can be handled through the arranged multi-group switch terminals, the multi-group electromagnetic lock can be related, and therefore reliable locking of cabinet doors such as double doors is ensured.
Furthermore, the high-voltage indicator lamp is an LED lamp; the LED bulb has the advantages that the cost of the traditional high-voltage bulb can be effectively reduced by indicating through the LED and the like, and the LED lamp is sensitive in response.
Furthermore, two ends of the power resistor are also connected with auxiliary short-circuit terminals in parallel, one end of the coil corresponding to the auxiliary short-circuit terminal is connected with an electronic switch, the other end of the electronic switch is connected with one end of an external power supply, the other end of the external power supply is connected with the other end of the coil corresponding to the auxiliary short-circuit terminal, and the electronic switch is controlled to be conducted by a control module; the auxiliary short-circuit terminal has the advantages that when the voltage sensor detects that the input voltage class is low voltage, the control module automatically controls the electronic switch to be closed, the coil loop of the auxiliary short-circuit terminal is closed at the moment, and the normally open auxiliary short-circuit terminal is closed, so that the power resistor is short-circuited, the voltage division is avoided, the capacity of driving the coil of the switch terminal is reduced, and the reliable control of the electromagnetic lock loop is realized.
Further, the switch terminal is a normally closed contact, and the electromagnetic lock is provided with an armature; in the electrified state of the electromagnetic lock, the armature is adsorbed, and the switch cabinet is unlocked; in the power-off state of the electromagnetic lock, the armature is pressed by the spring, and the switch cabinet is locked; the electromagnetic switch cabinet has the advantages that the electromagnetic circuit can be locked when the switch terminal is in the normally closed contact, the switch cabinet door is mechanically locked from the inside, an operator is prevented from opening the cabinet door in a high-voltage electrified state to carry out electrified operation, the power-off locking has the reliability of mechanical locking, and meanwhile, the electric energy consumption is effectively reduced and the cost is saved relative to the power-on locking.
Compared with the prior art, the utility model has the following beneficial effects: the high-voltage live display system is ensured to have a plurality of terminals responding in an instant state through the plurality of groups of switch terminals, and the terminals can be matched with an external electromagnetic loop to realize quick response. Meanwhile, the short circuit of the power resistor can be realized through the matching of the short circuit terminal and the power resistor, so that the strong driving capability of the coil of the switch terminal of the high-voltage live display system is realized, and particularly, when bus voltage is intersected, namely, the high-voltage live display system is adapted to the condition of high-voltage grade intersection. And the operation is simple and convenient, and the short-circuit terminal M, N is short-circuited by a wire during assembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a state diagram of the present utility model;
FIG. 2 is a schematic diagram of the wiring of the present utility model;
fig. 3 is a schematic diagram of a control structure of the present utility model.
Detailed Description
The present utility model is described in further detail below with reference to the accompanying drawings.
The following description is presented to enable one of ordinary skill in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate orientations or positions based on the orientation or positional relationship shown in the drawings, which are merely for convenience in describing the present simplified description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus the above terms are not to be construed as limiting the present utility model.
1-3, a high-voltage live display system comprises a three-phase electric input terminal, a power resistor R1, a control module, a plurality of groups of switch terminals and a short circuit terminal; the multi-group switch terminals are K1, K2, K3 and K4, the short-circuit terminal is M, N, the three-phase power input terminal is used for being connected with three-phase alternating current and providing electric energy for the system through a transformation rectifying module, and the transformation rectifying module is formed by a transformer and a rectifying bridge in the prior art. The induction of the secondary side voltage of the three-phase alternating current is realized through the transformer, so that the subsequent rectifier bridge and the coil Q1 of the switch terminal are supplied with electric energy. The induced voltage on the secondary side will be smaller as the bus voltage is lower. In order to ensure that the high-voltage live display system can be suitable for high-voltage electricity of different grades and ensure the capability of driving coils of the switch terminals, a power resistor is arranged in the high-voltage live display system to reduce voltage and a short circuit terminal is arranged in the high-voltage live display system to short the power resistor. Specifically, the voltage is reduced through the power resistor in the process that the voltage transformation rectifying module outputs electric energy to the coil of the switch terminal, so that the coil of the switch terminal is prevented from being burnt due to the fact that the voltage generated after the high-grade voltage enters from the bus is too high. When the high-voltage display system needs to be connected to a high-voltage bus of the next voltage class, the power resistor can be reduced in voltage to cause the capability of a coil of a driving switch terminal to be insufficient due to the existence of the power resistor, so that the shielding of the power resistor can be realized through the short circuit terminal, the driving capability is improved, and the utility model discloses a short circuit terminal is external, and an operator can realize through direct short circuit of a wire before assembling.
It should be noted that the plurality of sets of switch terminals may be controlled by the same switch coil, or the plurality of sets of switch terminals may be controlled by a plurality of corresponding switch coils, and the plurality of switch coils are connected in parallel.
In order to ensure the sensitivity of the response of the high-voltage live display system, a control module is arranged in the system, the control module is arranged in the prior art, signals are mainly received and output through a microcontroller, and electric energy after passing through the voltage transformation rectifying module is processed by the voltage reduction module to provide electric energy for the control module, and the voltage reduction module is an existing voltage reduction circuit and is not repeated here. The control module is connected with a voltage sensor for detecting alternating current, the voltage sensor detects three-phase alternating current, when detecting that a bus with high voltage is connected, the voltage sensor transmits a signal to the control module, and the control module drives the high-voltage indicator lamp to be on, namely drives the LED lamp to work.
In order to ensure the reliable operation of the high-voltage live display system, the system is required to be self-inspected before use, the system is also provided with a self-inspection module, the self-inspection module comprises a detection power supply, the input ends of the self-inspection power supply are L (+), N (-), and the detection power supply is connected with the voltage transformation rectifying module through a power switch S1 and a self-inspection switch S2 which are arranged and is used for providing electric energy for the voltage transformation rectifying module; specifically, the detection power source can be alternating current or direct current; when the detection power supply is alternating current, the power switch and the self-checking switch are turned on, and then the self-checking power supply is connected to the transformer. When the self-checking power supply is direct current, the power switch and the self-checking switch are turned on, and then the self-checking power supply is connected to the input end of the rectifier bridge. The selective ac or dc access of the self-test power source may be selected by those skilled in the art according to actual needs.
In order to avoid high-voltage live operation of an operator, an electromagnetic lock S3 is arranged in the switch cabinet, one end of a switch terminal is connected with one wiring end of the electromagnetic lock, the other end of the switch terminal is connected with a positive electrode or a live wire L1 of an external power supply, and the other wiring end of the electromagnetic lock is connected with a negative electrode or a zero line L2 of the external power supply; the electromagnetic lock can ensure the reliable operation of the electromagnetic lock when the bus incoming line is electrified and works. The switch terminal is opened after the bus is electrified, the electromagnetic lock loop is instantly powered off, the armature of the electromagnetic lock is pressed by the spring to lock the switch cabinet, the switch cabinet cannot be opened under the high-voltage electrified state, and high-voltage electrified operation of personnel is avoided. When the bus is powered off, the coil Q1 of the switch terminal is powered off, the switch terminal is restored to a normally closed state, at the moment, the electromagnetic lock loop is powered on, the electromagnetic lock attracts the armature compression spring, and the switch cabinet can be opened. The switch terminal is a normally closed contact, and the electromagnetic lock is provided with an armature; in the electrified state of the electromagnetic lock, the armature is adsorbed, and the switch cabinet is unlocked; in the power-off state of the electromagnetic lock, the armature is pressed by the spring, and the switch cabinet is locked; the electromagnetic circuit can be locked when the power is off by setting the switch terminal to be the normally closed contact, so that the mechanical locking of the switch cabinet door from the inside is realized, the cabinet door is prevented from being opened by an operator in a high-voltage electrified state, the electrified operation is performed, the power-off locking has the reliability of mechanical locking, and meanwhile, the electric energy consumption is effectively reduced relative to the electrified locking, and the cost is saved.
It should be noted that, the two ends of the power resistor may be connected with an auxiliary shorting terminal in parallel, one end of the coil corresponding to the auxiliary shorting terminal is connected with an electronic switch, the other end of the electronic switch is connected with one end of an external power supply, the other end of the external power supply is connected with the other end of the coil Q2 corresponding to the auxiliary shorting terminal, and the electronic switch is controlled to be turned on by a control module; the auxiliary short-circuit terminal can be used for automatically controlling the electronic switch to be closed when the voltage sensor detects that the input voltage level is low voltage, and the coil loop of the auxiliary short-circuit terminal is closed at the moment, and the normally open auxiliary short-circuit terminal is closed, so that the power resistor is shorted, the capability of reducing the voltage division to drive the coil of the switch terminal is avoided, and the reliable control of the electromagnetic lock loop is realized.
It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are by way of example only and are not limiting. The objects of the present utility model have been fully and effectively achieved. The functional and structural principles of the present utility model have been shown and described in the examples and embodiments of the utility model may be modified or practiced without departing from the principles described.
Claims (7)
1. The high-voltage live display system comprises three-phase electric input terminals and is characterized by further comprising a power resistor, a control module, a plurality of groups of switch terminals and short-circuit terminals; the three-phase power input terminal is used for accessing three-phase alternating current and providing electric energy for the system through the transformation rectifying module; the control module is connected with a voltage sensor for detecting alternating current and controls the high-voltage indicator lamp according to a detection signal of the voltage sensor; the power supply system comprises a voltage transformation rectifying module, a switching coil, a power resistor, a voltage-reducing resistor and a voltage-reducing circuit, wherein the voltage transformation rectifying module is powered on to drive the switching coil corresponding to a switching terminal to be conducted; the short-circuit terminals are connected in parallel with the two ends of the power resistor, and are connected with the short-circuit terminals through wires when the driving capability needs to be improved.
2. The high voltage live display system of claim 1, further comprising a self-checking module, wherein the self-checking module comprises a detection power source, and the detection power source is connected with the voltage transformation rectifying module through a set power switch and a self-checking switch and is used for providing electric energy for the voltage transformation rectifying module.
3. The system of claim 1, wherein one end of the switch terminal is connected to one terminal of the electromagnetic lock, the other end is connected to the positive or live wire of the external power supply, and the other terminal of the electromagnetic lock is connected to the negative or neutral wire of the external power supply.
4. A high voltage live display system according to claim 1, wherein the plurality of sets of switch terminals are controlled by the same switch coil or the plurality of sets of switch terminals are controlled by a plurality of corresponding switch coils, and the plurality of switch coils are connected in parallel.
5. The high voltage live display system of claim 1, wherein the high voltage indicator light is an LED light.
6. The high voltage live display system according to claim 1, wherein the two ends of the power resistor are further connected with auxiliary shorting terminals in parallel, one end of the coil corresponding to the auxiliary shorting terminal is connected with an electronic switch, the other end of the electronic switch is connected with one end of an external power supply, the other end of the external power supply is connected with the other end of the coil corresponding to the auxiliary shorting terminal, and the electronic switch is controlled to be conducted by a control module.
7. A high voltage live display system according to claim 3 wherein the switch terminal is a normally closed contact and the electromagnetic lock is provided with an armature; in the electrified state of the electromagnetic lock, the armature is adsorbed, and the switch cabinet is unlocked; in the electromagnetic lock power-off state, the armature is pressed by the spring, and the switch cabinet is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222889548.9U CN219041220U (en) | 2022-10-28 | 2022-10-28 | High-voltage electrified display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222889548.9U CN219041220U (en) | 2022-10-28 | 2022-10-28 | High-voltage electrified display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219041220U true CN219041220U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222889548.9U Active CN219041220U (en) | 2022-10-28 | 2022-10-28 | High-voltage electrified display system |
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| Country | Link |
|---|---|
| CN (1) | CN219041220U (en) |
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2022
- 2022-10-28 CN CN202222889548.9U patent/CN219041220U/en active Active
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