CN220509887U - Three-phase change-over switch - Google Patents

Abstract

The utility model discloses a three-phase change-over switch, which relates to the technical field of electric appliances and comprises the following components: the power supply driving module comprises a relay group, a power switch and a three-terminal voltage stabilizer which are sequentially connected, wherein the key, the display main control module and the power supply driving module are connected with an input port of the microprocessor, and an output port of the microprocessor controls the on or off of the relay group through the power supply driving module; the key is used for adjusting the on or off threshold value of the relay group. The utility model can select normal line access according to the line condition of three-phase four-wire home entry, meets the requirement of individual continuous power utilization, and saves cost. The real-time voltage can be displayed through the display screen at the same time, so that the current voltage information and the load condition can be known. The user can set the overvoltage and undervoltage protection value and the undervoltage protection value which are most suitable for the electric appliance according to different electric equipment and use environments, and the use is convenient.

Description

Three-phase change-over switch

Technical Field

The utility model relates to the technical field of electric appliances, in particular to a three-phase change-over switch.

Background

In the case of three-phase four-wire home, if a 220v lighting circuit is used, any one phase of live wire and zero wire can be used to form the 220v lighting circuit. It should be noted, however, that two phase lines cannot be used to form the lighting circuit, because this would produce a voltage of around 380v, burning out the appliance. When a power supply loop formed by any phase of live wire and zero wire is in a problem, power failure maintenance is needed, and no power is input in the period.

But many important sites, important authorities or units of special requirements such as: in order to ensure continuous power supply, an automatic transfer switch device is generally adopted to supply power, namely, when a power supply in use fails or is powered off for other reasons, a standby power supply can be automatically started to restore power supply, and a dual-power supply system generally completes automatic switching of the power supply through the automatic transfer switch device. However, the dual-power system needs to be additionally provided with a group of standby power supplies, the equipment cost is high, and the dual-power system needs to be cut out when the power supply is recovered to be normal, so that the operation is complex. And because the automatic transfer switch electric appliance is mainly used in an important electric field place, in order to ensure the safe and reliable operation of the load, maintenance personnel are required to check, maintain and repair the load and the electric equipment regularly or irregularly, so that the automatic transfer switch electric appliance is required to be reliably powered off, and other unwitting staff can be powered on through an operation handle exposed outside to cause misoperation under the conditions that equipment maintenance and maintenance are carried out or other power supply is required to be disconnected, thereby causing unnecessary loss or casualties.

Therefore, the three-phase change-over switch is provided, normal line access is selected according to the line condition of three-phase four-wire household, the requirement of individual continuous power utilization is met, the cost is saved, and the problem that needs to be solved by a person skilled in the art is solved conveniently.

Disclosure of Invention

In view of the above, the utility model provides a three-phase change-over switch which ensures the continuous power supply of a household power supply. In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a three-phase transfer switch, comprising: the power supply driving module comprises a relay group, a power switch and a three-terminal voltage stabilizer which are sequentially connected, wherein the key, the display main control module and the power supply driving module are connected with an input port of the microprocessor, and an output port of the microprocessor controls the on or off of the relay group through the power supply driving module; and the key adjusts the on or off threshold value of the relay group.

Optionally, be provided with display screen, pilot lamp on the shell, be used for fixed inlet wire's inlet wire screw hole and be used for fixed outlet wire's outlet wire screw hole.

Optionally, the display screen is an LED display screen or a nixie tube, and the display screen is used for displaying real-time voltage, real-time current and threshold parameters.

Optionally, the indicator lamp is an LED red light indicator lamp, and the total circuit or the sub-circuit conduction state is lightened and displayed; the extinction indicates the off state of the total circuit or the sub-circuit.

Optionally, a limit screw is further arranged on the shell, and the sizes of the wire inlet threaded hole and the wire outlet threaded hole are adjusted through the limit screw.

Optionally, the key is connected with the microprocessor and used for adjusting the over-voltage value, the under-voltage value and the under-voltage value.

Optionally, the microprocessor is a CMS32L051 microprocessor.

Optionally, a power module is arranged in the shell, the power module is connected with the display main control module, the microprocessor and the power driving module, and the power module converts alternating current into direct current and provides electric energy for the display main control module, the microprocessor and the power driving module.

Optionally, an extension socket is arranged on the shell, and the auxiliary module is connected through the extension socket in an adapting mode.

Optionally, a limiting block is arranged on the shell, and the limiting block is used for installation and fixation.

Compared with the prior art, the three-phase change-over switch has the following beneficial effects:

the utility model proposes a three-phase change-over switch comprising: the power supply driving module comprises a relay group, a power switch and a three-terminal voltage stabilizer which are sequentially connected, wherein the key, the display main control module and the power supply driving module are connected with an input port of the microprocessor, and an output port of the microprocessor controls the on or off of the relay group through the power supply driving module; and the key adjusts the on or off threshold value of the relay group. The utility model can select normal line access according to the line condition of three-phase four-wire home entry, meets the requirement of individual continuous power utilization, and saves cost.

The utility model changes the voltage parameter threshold value through the operation of the microprocessor and the triggering of the key, and displays the set threshold value parameter on the display screen. The real-time voltage can be displayed through the display screen at the same time, and a user can clearly know the current voltage information and the load condition. The user can set the overvoltage and undervoltage protection value and the undervoltage protection value which are most suitable for the electric appliance according to different electric equipment and use environments, and the use is convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an overall structure of a three-phase change-over switch according to the present utility model.

Fig. 2 is a right side view of a three-phase change-over switch according to the present utility model.

Fig. 3 is a left side view of a three-phase change-over switch according to the present utility model.

Fig. 4 is a top view of a three-phase change-over switch according to the present utility model.

Fig. 5 is a rear view of a three-phase change-over switch according to the present utility model.

Fig. 6 is a front view of a three-phase change-over switch provided by the utility model.

Fig. 7 is a schematic diagram of a key structure according to the present utility model.

Fig. 8 is a schematic diagram of a display circuit provided by the present utility model.

Fig. 9 is a schematic diagram of an indicator light circuit provided by the utility model.

Fig. 10 is a schematic circuit diagram of a display main control module provided by the utility model.

Fig. 11 is a schematic circuit diagram of a power driving module according to the present utility model.

The device comprises a 1-shell, a 2-incoming thread hole, a 3-outgoing thread hole, a 4-limit screw, a 5-limit hole, a 6-indicator lamp, a 7-key, an 8-display screen and a 9-expansion socket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model discloses a three-phase change-over switch, which is shown in figure 1 and comprises: the display control device comprises a key 7, a shell 1, a display main control module, a microprocessor and a power supply driving module, wherein the display main control module, the microprocessor and the power supply driving module are arranged in the shell 1, the power supply driving module comprises a relay group, a power switch and a three-terminal voltage stabilizer which are sequentially connected, the display main control module and the power supply driving module are connected with an input port of the microprocessor, and an output port of the microprocessor controls the on or off of the relay group through the power supply driving module; the key 7 adjusts the on or off threshold value of the relay group.

Further, a display screen 8, an indicator light 6, a key 7, an incoming line threaded hole 2 for fixing incoming lines and an outgoing line threaded hole 3 for fixing outgoing lines are arranged on the shell 1.

Further, the display screen 8 is an LED display screen or a nixie tube, as shown in fig. 8, and the display screen 8 is used for displaying real-time voltage, real-time current and threshold parameters.

Further, the indicator lamp 6 is an LED red indicator lamp, as shown in fig. 9, and the total circuit or the sub-circuit is turned on; the extinction indicates the off state of the total circuit or the sub-circuit. The indicator lamp 6 comprises a total circuit operation indicator lamp and a sub-circuit operation indicator lamp, when the voltage exceeds or is lower than the set voltage, the voltage value is not recovered to be normal in the set delay time, the normal phase is disconnected, the sub-circuit operation indicator lamp is turned off, and when the relay of the normal phase is switched, the sub-circuit operation indicator lamp is turned on; when all the sub-circuits are in operation failure, when the voltage of all the sub-circuits exceeds or is lower than the set voltage, the voltage value is not recovered to be normal within the set delay time, the normal phase is disconnected, the total circuit operation indicator lamp is turned off, and when more than one sub-circuits are normal, the total circuit operation indicator lamp is turned on when the relay with the normal phase is switched to.

Further, a limit screw 4 is further arranged on the shell 1, and the sizes of the wire inlet threaded hole 2 and the wire outlet threaded hole 3 are adjusted through the limit screw 4.

Further, the key 7 is connected to the microprocessor, as shown in fig. 7, and is used for adjusting the over-voltage and under-voltage values. The key 7 includes: save button, delay button that resets, undervoltage adjustment button and overvoltage adjustment button, wherein:

the overvoltage value is reset by pressing an overvoltage adjusting button, and the overvoltage value is adjusted by short voltage or long voltage. When the adjustment is completed, a save button is pressed to save the adjustment result.

The under-voltage value is reset by pressing the under-voltage adjusting button, and the under-voltage is adjusted by pressing the short-voltage or long-voltage. When the adjustment is completed, a save button is pressed to save the adjustment result.

Pressing the reset delay button sets a delay recovery time value, and short-pressing or long-pressing is performed to adjust the delay recovery value. When the adjustment is completed, a save button is pressed to save the adjustment result.

When the sub-circuits L1, L2 and L3 are over-voltage, under-voltage or phase-failure, the normal phase is disconnected, the normal phase is automatically searched, and the relay of the normal phase is switched to, and the switching priority L1 is greater than L2 and greater than L3.

Further, the microprocessor is a CMS32L051 microprocessor. The CPU, the memory, the counter, the USB, the A/D conversion, the UART, PLC, DMA and the LCD driving circuit are integrated to control different combinations for different application occasions. And the built-in program of the CMS32L051 microprocessor judges whether the voltage value exceeds or is lower than a preset threshold value and whether the phase is normal or not in real time, and displays the voltage value in real time through an LED display screen.

Further, an external structure of the three-phase change-over switch is shown in fig. 1 to 6, and fig. 1 is a schematic diagram of an overall structure of the three-phase change-over switch provided by the utility model. Fig. 2 is a right side view of a three-phase change-over switch according to the present utility model. Fig. 3 is a left side view of a three-phase change-over switch according to the present utility model. Fig. 4 is a top view of a three-phase change-over switch according to the present utility model. Fig. 5 is a rear view of a three-phase change-over switch according to the present utility model. Fig. 6 is a front view of a three-phase change-over switch provided by the utility model.

Further, as shown in fig. 10, a display main control module of the three-phase change-over switch includes: display screen 8, button 7, pilot lamp 6, extension adapter, signal transmission line and impulse resistance, display screen 8, button 7, pilot lamp 6, extension adapter, signal transmission line and impulse resistance all are connected with microprocessor, and microprocessor passes through signal transmission line and power drive module signal connection, through microprocessor control drive display screen 8, button 7 and pilot lamp 6, through extension adapter extension display main control module interface, protect display main control module through impulse resistance.

Further, as shown in fig. 11, the power driving module of the three-phase change-over switch comprises a relay group, a power switch and a three-terminal voltage stabilizer which are sequentially connected, the relay group comprises a plurality of relays which are connected with the ground in parallel, the relays are grounded through a filter circuit, the power driving module is connected with a microprocessor through a signal transmission line, and the relay with a normal phase is selected through the microprocessor so as to adjust the overvoltage, undervoltage or phase open-phase condition in the circuit.

Further, the three-phase change-over switch further comprises a buzzer, wherein the buzzer is connected with the microprocessor and used for alarming according to the circuit condition.

Further, a power module is arranged in the shell 1 and is connected with the display main control module, the microprocessor and the power driving module, and the power module converts alternating current into direct current and provides electric energy for the display main control module, the microprocessor and the power driving module.

Further, an expansion socket 9 is arranged on the shell 1, and an auxiliary module is connected through the expansion socket 9 in an adapting mode.

Further, a limiting block 5 is arranged on the shell 1, and the limiting block 5 is fixedly installed.

Further, the rated working voltage range of the three-phase change-over switch is AC 80V-400V, the rated power supply voltage is AC 220V, the overvoltage setting range is 230V-300V, the undervoltage setting range is 210V-140V, and the delay time setting range is 1-30S.

In a specific embodiment, a three-phase change-over switch takes a three-phase four-wire household power supply as input, overvoltage, undervoltage and phase abnormality detection is carried out inside the three-phase four-wire household power supply, collected data are transmitted to a microprocessor, the microprocessor carries out logic judgment on the collected data, the overvoltage and undervoltage values, the undervoltage values and a preset phase, and the microprocessor is connected with a power supply driving module to control the release of an abnormal relay in a relay group, select and access the relay with a normal phase, so that the continuous power supply of the household power supply is ensured.

The display main control module displays the detected voltage through the LED display screen so as to intuitively reflect the detected voltage to a user, and the user can know the working condition of the power supply. The microprocessor is connected with the key 7, and the parameters of the over-voltage, under-voltage and delay recovery time value can be set through the key 7. The collected data are transmitted to a microprocessor, the microprocessor carries out logic judgment on the collected data, the overvoltage and undervoltage value, the undervoltage value and the preset phase, when the voltage or the phase is detected to be in a normal range, two paths of signals are output, one path of signals is output to a display main control module to display the real-time normal voltage value, the other path of signals is output to a power supply driving module, the power supply driving module drives normal relay actuation in a relay group, and a loop is connected.

When the voltage is over-voltage or under-voltage or the phase is abnormal, the collected data is transmitted to the microprocessor, the microprocessor carries out logic judgment on the collected data, the over-voltage value, the under-voltage value and the preset phase, when the voltage or the phase is detected to be in an abnormal range, two paths of signals are output, one path of signals is output to the display main control module, the real-time abnormal voltage value is correspondingly displayed, the other path of signals are output to the power supply driving module, the power supply driving module drives the abnormal relay in the relay group to release, the loop is disconnected, and the relay with normal phase is controlled to be selected and connected so as to ensure continuous power supply of the household power supply.

When the voltage exceeds or is lower than the set voltage, the voltage value does not return to normal in the set delay time, the normal phase is disconnected, the sub-circuit operation indicator lamp is turned off, and when the relay of the normal phase is switched to, the sub-circuit operation indicator lamp is turned on; when all the sub-circuits are in operation failure, when the voltage of all the sub-circuits exceeds or is lower than the set voltage, the voltage value is not recovered to be normal within the set delay time, the normal phase is disconnected, the total circuit operation indicator lamp is turned off, and when more than one circuit of sub-circuits are normal, the relay of the normal phase is switched to, and the total circuit operation indicator lamp is turned on.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A three-phase transfer switch, comprising: the display control device comprises a shell (1), and keys (7), a display main control module, a microprocessor and a power supply driving module which are arranged in the shell (1), wherein the power supply driving module comprises a relay group, a power switch and a three-terminal voltage stabilizer which are sequentially connected, the keys (7), the display main control module and the power supply driving module are all connected with an input port of the microprocessor, and an output port of the microprocessor controls the on or off of the relay group through the power supply driving module; the key (7) adjusts the on or off threshold value of the relay group.

2. A three-phase change-over switch according to claim 1, characterized in that the housing (1) is provided with a display screen (8), an indicator light (6), a wire-incoming threaded hole (2) for fixing a wire incoming and a wire-outgoing threaded hole (3) for fixing a wire outgoing.

3. A three-phase change-over switch according to claim 2, characterized in that the display screen (8) is an LED display screen or a nixie tube, the display screen (8) being adapted to display real-time voltage, real-time current and threshold parameters.

4. A three-phase change-over switch according to claim 2, characterized in that the indicator light (6) is an LED red indicator light, which lights up the total or sub-circuit on-state; the extinction indicates the off state of the total circuit or the sub-circuit.

5. A three-phase change-over switch according to claim 2, characterized in that the housing (1) is further provided with a limit screw (4), and the sizes of the wire inlet threaded hole (2) and the wire outlet threaded hole (3) are adjusted by the limit screw (4).

6. A three-phase change-over switch according to claim 1, characterized in that the key (7) is connected to the microprocessor for adjusting the over-voltage and under-voltage values.

7. The three-phase transfer switch of claim 1, wherein the microprocessor is a CMS32L051 microprocessor.

8. The three-phase change-over switch according to claim 1, wherein a power module is arranged in the shell (1), the power module is connected with the display main control module, the microprocessor and the power driving module, and the power module converts alternating current into direct current and provides electric energy for the display main control module, the microprocessor and the power driving module.

9. A three-phase change-over switch according to claim 1, characterized in that the housing (1) is provided with an extension socket (9), through which extension socket (9) the auxiliary module is adapted to be connected.

10. A three-phase change-over switch according to claim 1, characterized in that the housing (1) is provided with a stop block (5), which is fixed by means of the stop block (5).