CN204789733U - Electrified display based on divide and be listed as module - Google Patents

Abstract

The utility model discloses a charged display based on arranging modules, which includes a bottom plate, and a power supply module, a live display module and a locking control module installed on the bottom plate in a plug-in manner, wherein the power supply module includes rectification and filtering The circuit and the step-down voltage stabilizing circuit provide stable direct current for the blocking control module; the charged display module includes a test interface connected in sequence, a three-phase rectifier bridge, a current limiting resistor, a charged display switch and a charged indicator light; the blocked control The module includes diodes, optocouplers, triodes and relays connected in sequence. The above live display is a pluggable modular design, which greatly facilitates the replacement of faulty parts of the live display, which not only saves costs, but also prevents high-voltage power-taking ports from being suspended during the replacement process, so high voltage will not be generated, improving The safety and convenience of the operation are improved.

Description

A Live Display Based on Separation Modules

technical field

The utility model relates to a charging display, in particular to a charging display based on a sorting module.

Background technique

The charged display is a device that uses the electric field coupling principle between the high-voltage electric field and the sensor to perform inductive measurement outside a safe distance. It is generally installed on the incoming bus, circuit breaker, main transformer, switch cabinet, GIS combined electrical appliances and other Where it needs to be displayed whether it is charged or not, to prevent electrical misoperation. The charging indicator mainly provides two functions, one is charging indication, and the other is preventing misuse. In the specific implementation, the light of the indicator light of each phase is used to show that the phase has power; the function of preventing misoperation is realized by providing a live indication contact and introducing the contact into the anti-misoperation logic.

At present, the charged display commonly used in the prior art is an integration of three modules. In case of failure, it is usually to replace the live display with non-stop operation. There are 8 interfaces in total for the charged display, which are the high-voltage power supply port (A/B/C/N), the AC power supply port (L/N0) and the locking contact port (K1/K2). All 8 ports need to be dismantled when replacing. The old live display can only be removed after it has been dropped. However, when it is in a suspended position, the voltage of the high-voltage power-taking port can reach more than 500V, which is likely to cause electric shock hazards. Moreover, according to on-site operation and maintenance experience, the locking control contact is the most prone to failure components, and replacing the entire live display due to damage to a certain component also causes a certain degree of waste.

In view of this, the inventor of the present invention conducted research on this, and specially developed a charged display based on columnar modules, and this case arose from it.

Utility model content

The purpose of the utility model is to provide a live display based on arranging modules, which changes the traditional integrated implementation, improves the safety of the live display replacement operation, and saves costs at the same time.

In order to achieve the above object, the solution of the present utility model is:

A live display module based on a columnar module, including a base plate, and a power supply module, a live display module and a blocking control module installed on the base plate in a plug-in manner, wherein the power supply module includes a rectification filter circuit and a step-down circuit connected in sequence. The voltage stabilizing circuit provides stable direct current for the blocking control module; the charged display module includes a test interface connected in sequence, a three-phase rectifier bridge, a current limiting resistor, a charged display switch and a charged indicator light; the blocked control module includes sequentially connected Diodes, optocouplers, transistors and relays.

Preferably, the power supply module further includes a power indicator light, which is used to display the power-on and power-off status of the power supply module; after the 220V alternating current passes through the rectification and filtering circuit, a direct current higher than 220V is obtained, and then a stable voltage is obtained after passing through the step-down regulator circuit DC output to supply power to the latch control module.

As a preference, the input end of the charged display module is connected to a 380V three-phase high-voltage power supply, and each phase is provided with a test interface for the electric meter to test whether there is electricity, and the input terminal of the three-phase high-voltage power supply is further provided with a Zener diode , which is used to limit the voltage of the high-voltage test interface and prevent overvoltage damage to the equipment. The three-phase rectifier bridge, current limiting resistor, live display switch and live indicator light form the live display circuit of each phase. If a certain phase has power, then The voltage can be measured with a multimeter at the test interface of this phase, and after the live display switch of this phase is turned on, the live indicator light will light up to indicate that there is electricity.

As a preference, the input end of the locking control module is connected to a 380V three-phase high voltage power, the three-phase high voltage power is connected to an optocoupler through a diode, the output end of the optocoupler is respectively connected to a power supply module and a triode, and the triode is connected to a relay. As long as there is electricity in any phase of high-voltage electricity, the optocoupler will be turned on, and the triode will also be turned on, so the coil of the relay will pass the current, so that the normally closed contact will be opened, and the operation circuit will be disconnected to prevent the power state. Misuse. Conversely, if the three-phase high-voltage power supply has no electricity in all three phases, the optocoupler is not conducting, and the triode is in the cut-off state, so there is no voltage at both ends of the relay coil, and the normally closed contact is closed at this time.

The live display based on the sorting module described in the utility model is a pluggable modular design, which greatly facilitates the replacement of the faulty parts of the live display, not only saves the cost, but more importantly, the high-voltage The electrical ports (A/B/C/N) will not be suspended, so high voltage will not be generated, which improves the safety and convenience of the operation. After the utility model is applied, the replacement of the charged display can be directly completed by operation and maintenance personnel, without the need for maintenance personnel to go to the scene, and the production efficiency is improved.

The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the circuit diagram of the charged display power supply module of the present embodiment;

Fig. 2 is the electrical display module circuit diagram of the charged display of the present embodiment;

Fig. 3 is the circuit diagram of the live display locking control module of the present embodiment;

Fig. 4 is the charged display bottom plate circuit diagram of the present embodiment;

Fig. 5 is the front view of the appearance of the charging display of the present embodiment;

Fig. 6 is a rear view of the appearance of the charging display of this embodiment.

Detailed ways

For the above technical solutions, specific implementation methods are given with reference to the accompanying drawings, including circuit design and interface design. Due to the wide variety of electrified displays used in the field, this implementation plan does not give specific structural design dimensions, but only provides a principled implementation plan, and various types of electrified displays can be improved based on this principle.

Accompanying drawing 1 is the circuit diagram of the power supply module of the charged display, and the power supply module has realized the rectification function. In the figure, L and N0 are the input terminals of the power supply module, which are used to receive 220V AC power; VCC and VGND are the output terminals of the power supply module, which are 24V DC output, and are used to supply power to the locking control circuit. After the 220V AC is rectified by the rectifier bridge B1 and filtered and stabilized by the capacitor C5, a DC power of about 280V is obtained, and then the voltage is stepped down by the DC voltage regulator module VR1 and stabilized by the capacitor C6 to obtain a stable 24V DC output. The resistor R11 and the indicator Power are used to realize the electrical signal indication of the power supply module.

Accompanying drawing 2 is the circuit principle diagram of live display module, among the figure, A, B, C and N are high-voltage electric power-taking ports, are the input signal of live display module; Test_A, Test_B and Test_C are three that live display module provides The test interface is used for the meter to test whether there is electricity. Diodes D1, D1, and D3 in the figure are Zener diodes, which are used to limit the voltage of the high-voltage power inlet and prevent overvoltage from damaging the equipment. Diodes D4, D5, D6, D7, D8, and D9 form a three-phase bridge rectifier circuit, and cooperate with current-limiting resistors R1, R2, and R3, switches S1, S2, and S3, and charged indicator lights DS1, DS2, and DS3 to form each Phase charged display circuit. Take phase A as an example. If phase A has power, you can measure the voltage with a multimeter at the test interface Test_A. After turning on the switch S1, the charging indicator DS1 will light up to indicate that there is power. The other two phases are also of the same design, which will not be repeated here.

Attached Figure 3 is a circuit schematic diagram of the locking control module. The input of the locking control module is the high-voltage power inlet (A/B/C/N) and the DC power supply (VCC and VGND), and the output is the locking contacts K1 and K2. As long as any phase of the three-phase high-voltage power A, B, and C has power, the optocoupler U1 will be turned on, and the transistor Q1 will also be turned on, so the coil of the relay DJ will pass current, making the normally closed contacts K1 and K2 Open and disconnect the operating circuit to prevent misoperation in the electrified state. Conversely, if there is no electricity in the three phases A, B, and C, the optocoupler U1 is not turned on, and the triode Q1 is in the cut-off state, so there is no voltage at both ends of the relay coil, and the normally closed contacts K1 and K2 are closed at this time. The locking indicator light LOCK in the figure is only closed when there is power, indicating that the operation is locked.

Accompanying drawing 4 is the circuit diagram of the backplane, which not only provides the sockets of each module, but also indicates the connection relationship between each signal. Among them, the P1 socket is connected to the plug-in of the power supply module, the P2 socket is connected to the plug-in of the live display module, and the P3 socket is connected to the plug-in of the locking control module. All the interface signal connections are completed on the bottom plate. All the circuits of the live display are high-current circuits, so there is no chip, and it fully supports the live hot swap of the plug-in.

The bottom plate, the power supply module, the charged display module and the locking control module described in the utility model can be packaged in a casing, which is convenient to use. Attached Figure 5 is the front view of the appearance of the charged display, 1 in the figure is the charged indicator light, corresponding to DS1, DS2, DS3 in Figure 2; 2 in the figure is the test point (test interface), corresponding to Test_A, Test_B and Test_C; 3 in the figure is a switch, corresponding to S1, S2, S3 in Figure 2. 4 in the figure is a power supply module, and 5 is a locking control module.

Accompanying drawing 6 is the rear view of the appearance of the charged display, and there are 8 connection terminals in total, and the meaning of each terminal has been marked in the figure.

The above-mentioned embodiments and drawings do not limit the product form and style of the present utility model, and any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present utility model.

Claims (4)

1. the electrification display based on apportion module, it is characterized in that: comprise base plate, and be arranged on the supply module on base plate, charged display module and lock-in control module with pluggable mode, wherein, described supply module comprises the current rectifying and wave filtering circuit and decompression voltage regulator that are connected successively, for lock-in control module provides galvanic current; Described charged display module comprises the test interface, three-phase commutation bridge, current-limiting resistance, charged display switch and the charged pilot lamp that are connected successively; Described lock-in control module comprises the diode, optocoupler, triode and the relay that are connected successively.

2. a kind of electrification display based on apportion module as claimed in claim 1, is characterized in that: described supply module comprises power light further, for showing supply module energising and powering-off state; 220V alternating current, after current rectifying and wave filtering circuit, obtains the direct current higher than 220V, then after decompression voltage regulator, obtain stable direct current output, is lock-in control module for power supply.

3. a kind of electrification display based on apportion module as claimed in claim 1, it is characterized in that: the input end of described charged display module connects 380V three-phase high-voltage, every mutually on be equipped with a test interface, whether electricity is had for ammeter test, three-phase high-voltage electrical input is provided with voltage stabilizing diode further, for limiting the voltage of Hi-pot test interface, prevent superpotential injury device, three-phase commutation bridge, current-limiting resistance, charged display switch and charged pilot lamp form the charged display circuit of each phase respectively, electricity is had mutually if a certain, then can record voltage at this phase test interface multimeter, close after this mutually charged display switch, charged pilot lamp lights and shows electricity.

4. a kind of electrification display based on apportion module as claimed in claim 1, it is characterized in that: the input end of described lock-in control module connects 380V three-phase high-voltage, three-phase high-voltage is connected with optocoupler by diode, the output terminal of optocoupler is connected with triode with supply module respectively, triode is connected with relay, as long as three-phase high-voltage any has electricity mutually, optocoupler just will be switched on, thus triode is also opened, so the coil of relay just passes through electric current, normally closed contact is opened, opening operation loop, prevent the maloperation under electricity condition, otherwise, if three-phase high-voltage three-phase is all without electricity, the then non-conducting of optocoupler, so triode is just in cut-off state, thus relay coil two ends no-voltage, now normally closed contact closes.