CN212935502U

CN212935502U - Multi-path current slitting device

Info

Publication number: CN212935502U
Application number: CN202021505132.7U
Authority: CN
Inventors: 李灵兵
Original assignee: Hangzhou Fangzhou Power Technology Co ltd
Current assignee: Hangzhou Fangzhou Power Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-04-09
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a device is cut to multichannel electric current, including front panel and rear panel, be equipped with operation structure on the front panel, be equipped with the input/output structure on the rear panel, the structure is cut to inside power structure and the electric current that is equipped with of shell. Adopt micro control technology to expand on the current output way, can expand four ways with the current of input a way, it is with low costs, it is many to extend output path number, and control is various to can enough carry out local control, also can carry out distal end control, all exports are all integrated to the back row terminal, and the wiring is simple and convenient.

Description

Multi-path current slitting device

Technical Field

The utility model relates to a relay protection field especially relates to a device is cut to multichannel electric current.

Background

Data shows that in the relay protection test of the power system at present, the number of output current circuits of a conventional relay protection tester is generally three or six, and some special microcomputer protection devices cannot meet the test requirements; if a microcomputer relay protection tester with more output circuits at a higher end is adopted, the cost is doubled, and the weight is larger, so that the microcomputer relay protection tester is not beneficial to conventional use.

Chinese patent document CN105548742A discloses a "relay protection remote test system". Adopts the following steps: set up protection HMI module and calculation control module in the control room and set up in the protection device of being in place that constitutes by relay protection function module and test module in a distant place, wherein: the calculation control module is connected with the test equipment for relay protection through a network, transmits protection test control information and outputs applied test excitation quantity, the in-situ protection device is respectively connected with the protection HMI device through a station level network and transmits MMS message information, and the protection HMI device receives a test instruction of the calculation control module and feeds back a test result to realize remote test of the in-situ protection device. The technical scheme has insufficient output current circuits, and can not meet the test requirements of some special microcomputer protection devices.

Disclosure of Invention

The utility model discloses it is not enough to mainly solve original conventional relay protection tester output current way number, the relay protection tester that the output way number is many is expensive, the big technical problem who is difficult for carrying of weight, a device is cut to multichannel electric current is provided, adopt micro control technique to expand on the current output way, can expand the four ways with the electric current of the same kind of input, and is with low costs, it is many to extend the output way number, control is various, and can enough carry out the on-the-spot control, also can carry out distal end control, all output are whole to be integrated to the back row terminal, the wiring is simple and convenient.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model discloses a front panel and rear panel are equipped with operation structure on the front panel, are equipped with the input/output structure on the rear panel, the structure is cut to inside power structure and the electric current that is equipped with of shell.

Preferably, the front panel is provided with a current switch, a circuit breaking structure, a selection switch, a protective tube and a power switch.

Preferably, the current switch comprises three shift positions of "0", "I" and "II". When the local selection is carried out, the channel selection relays DXJI and DXJII can be controlled through the group I and group II selection switches; when the remote control is selected, the I group selector switch and the II group selector switch are shielded and cannot control the channel selection relay, and the channel selection relay can be controlled only through the I group remote control and the II group remote control.

Preferably, the selector switch includes a remote gear position and a local gear position. Selecting the source of the control signal through a selection switch on the panel; if the remote control is selected, all local control keys are locked; if local control is selected, the control and switching can be carried out through the I-path or II-path control, and each phase can be controlled through the phase-lack button of each phase.

Preferably, the power supply structure comprises a wide voltage processing circuit, the wide voltage processing circuit comprises a chip U1, and a pin 1 of the chip U1 is connected with a power field-effect transistor Q1 through a resistor R3; pin 2 is grounded through a capacitor C4 and is connected with pin 1 of a capacitor C2 and a coil T2 through a resistor R2, pin 2 is connected with pin 3 of a coil T2 through a resistor R5 and a diode D6, resistor R2 is connected with pin 2 of the coil T2 through a resistor R4, a resistor R7 and a capacitor C5 which are connected in parallel, and is connected with a power field effect transistor Q1 through a diode D5; a pin 4 of the chip U1 is grounded through a resistor R6 and a resistor R8 which are connected in parallel and is connected with a power field effect transistor Q1; pin 5 of chip U1 is grounded through resistor R19; pin 7 of chip U1 is grounded through capacitor C3; a pin 8 of a chip U1 is grounded and is grounded through a diode C1 and a diode C2 which are connected in series, the pin 8 of the chip U1 is grounded through a diode C3 and a diode C4 which are connected in series, a diode C1 and a diode C2 which are connected in series are connected with a coil T1, the other end of the coil T1 is connected with a pin 2 of a chip P1 through a resistor F1, the diode C3 and a diode C4 which are connected in series are connected with a coil T1, the other end of the coil T1 is connected with a pin 1 of a chip P1, a pin 2 of the chip P1 is grounded, and the pin 1 of the chip P1 is connected with the pin 2 through a capacitor C1; pin 4 of coil T2 is grounded; pin 5 of coil T2 is connected to pin 1 of chip P2 through diode D8, and is connected to the ear th end through resistors R11 and R12, diode D8 is connected to chip U2 through resistor R9, and is connected to pin 3 of chip U3 through resistor R10, pin 1 of chip U3 is connected to the ear th end through resistor R12, and pin 2 of chip U3 is connected to the ear th end; pin 6 of coil T2 is connected to the ear terminal; pin 7 of coil T2 is connected to pin 8 of coil T2 through diode D7 and capacitor C6; a pin 8 of the coil T2 is connected with a pin 5 of the coil T2 through a capacitor C7, a capacitor C8 and a capacitor C10 and is also connected with an EARTH end; the EARTH terminal is coupled to ground through capacitor C11.

Preferably, the current splitting structure comprises a pin 101 as a current input end, a pin 105 and a pin 109 as current output ends, and the middle of the current splitting structure is connected by two normally open nodes DXJI-1 and DXJII-1.

Preferably, the current splitting structure further comprises a remote gear and a local gear of the selector switch, and the remote gear and the local gear of the selector switch are connected with the voltage output end; the I group gear and the II group gear of the current change-over switch, the remote gear and the local gear of the selector switch are sequentially connected with the voltage input end and the voltage input end through a DX1 switch, a DX and a diode which are connected in parallel, the I group gear of the current change-over switch is sequentially connected with the voltage input end through a DX1-1 and a channel selection relay DXJI, and the channel selection relay DXJI is simultaneously connected with the lamps A1-I, the resistor R and the diode which are connected in series in parallel; the group II gear of the current switch is connected with the voltage input end through DX1-2 and a channel selection relay DXJII in sequence, and the channel selection relay DXJII is connected with the lamp A1-II, the resistor R and the diode which are connected in series in parallel.

The utility model has the advantages that:

1. the current output circuit is expanded by adopting a micro-control technology, and the input current can be expanded to four paths.

2. Low cost and more expanded output paths.

3. The control is various, and the control can be carried out locally or remotely.

4. All outputs are integrated to the rear row of terminals, and wiring is simple and convenient.

Drawings

Fig. 1 is a front panel diagram of the present invention.

Fig. 2 is a rear panel diagram of the present invention.

Fig. 3 is a wide voltage processing circuit of the power supply structure of the present invention.

Fig. 4 is an internal structure diagram of the present invention.

In the figure, a current change-over switch 1, a loop 2 disconnection structure, a selection switch 3, a fuse 4, a power switch 5 and an output terminal 6 are arranged.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): the multi-path current splitting device comprises a shell, wherein the shell comprises a front panel and a rear panel, an operation structure is arranged on the front panel, and the operation structure on the front panel comprises a current switch 1, a loop disconnection structure 2, a selection switch 3, a protective tube 4 and a power switch 5. The current switching switch 1 includes three stages of "0", "I", and "II". The selector switch 3 includes a remote position and a local position. Selecting the source of the control signal through a selection switch on the panel; if the remote control is selected, all local control keys are locked; if local control is selected, the control and switching can be carried out through the I-path or II-path control, and each phase can be controlled through the phase-lack button of each phase. The rear panel is provided with an input/output structure which comprises an output terminal 6, all modules adopt a plug-in mounting mode, and each module is made into an independent plug board, as shown in fig. 2, four current plug-ins are designed to be completely the same in sampling, and can be switched randomly among the plug boards, so that the situation of wrong insertion is effectively avoided. The shell is internally provided with a power supply structure and a current slitting structure.

As shown in fig. 3, the power supply structure includes a wide voltage processing circuit, which includes a chip U1, pin 1 of the chip U1 is connected to a power fet Q1 via a resistor R3; pin 2 is grounded through a capacitor C4 and is connected with pin 1 of a capacitor C2 and a coil T2 through a resistor R2, pin 2 is connected with pin 3 of a coil T2 through a resistor R5 and a diode D6, resistor R2 is connected with pin 2 of the coil T2 through a resistor R4, a resistor R7 and a capacitor C5 which are connected in parallel, and is connected with a power field effect transistor Q1 through a diode D5; a pin 4 of the chip U1 is grounded through a resistor R6 and a resistor R8 which are connected in parallel and is connected with a power field effect transistor Q1; pin 5 of chip U1 is grounded through resistor R19; pin 7 of chip U1 is grounded through capacitor C3; the pin 8 of the chip U1 is grounded through the serially connected diode C1 and the diode C2, and the pin 8 of the chip U1 is grounded through the serially connected diode C3 and the diode C4. The diode C1 and the diode C2 are connected in series and are connected with the coil T1, the other end of the coil T1 is connected with a pin 2 of a chip P1 through a resistor F1, the diode C3 and the diode C4 are connected in series and are connected with the coil T1, the other end of the coil T1 is connected with a pin 1 of the chip P1, a pin 2 of the chip P1 is grounded, and the pin 1 of the chip P1 is connected with the pin 2 through a capacitor C1; pin 4 of coil T2 is grounded; pin 5 of coil T2 is connected to pin 1 of chip P2 through diode D8, and is connected to the ear th end through resistors R11 and R12, diode D8 is connected to chip U2 through resistor R9, and is connected to pin 3 of chip U3 through resistor R10, pin 1 of chip U3 is connected to the ear th end through resistor R12, and pin 2 of chip U3 is connected to the ear th end; pin 6 of coil T2 is connected to the ear terminal; pin 7 of coil T2 is connected to pin 8 of coil T2 through diode D7 and capacitor C6; a pin 8 of the coil T2 is connected with a pin 5 of the coil T2 through a capacitor C7, a capacitor C8 and a capacitor C10 and is also connected with an EARTH end; the EARTH terminal is coupled to ground through capacitor C11.

U7545 is used as a main control chip, and the input voltage is in a wide range of 85-365V. The U7545 controls the output voltage by controlling the power field effect transistor Q1. And meanwhile, the output voltage is fed back by the optocoupler U2 and compared with the output voltage U3, so that the output voltage precision is higher. R2 may be modified if necessary to adjust the output voltage throughout the circuit. If different voltages need to be output in a multipath manner, corresponding three-terminal voltage-stabilizing tubes can be added to stabilize the output voltage.

As shown in fig. 4, the current splitting structure includes pin 101 as a current input terminal, pin 105, and pin 109 as current output terminals, which are connected by two normally-open nodes DXJI-1 and DXJI-1. The current splitting structure also comprises a remote gear and a local gear of the selector switch 3, and the remote gear and the local gear of the selector switch 3 are connected with the voltage output end; the I group gear and the II group gear of the current change-over switch 1, the remote gear and the local gear of the selector switch 3 are sequentially connected with the voltage input end and the voltage input end through a DX1 switch, a DX and a diode which are connected in parallel, the I group gear of the current change-over switch 1 is sequentially connected with the voltage input end through a DX1-1 and a channel selection relay DXJI, and the channel selection relay DXJI is simultaneously connected with the lamp A1-I, the resistor R and the diode which are connected in series in parallel; the group II gear of the current switch 1 is connected with the voltage input end through DX1-2 and a channel selection relay DXJII in sequence, and the channel selection relay DXJII is connected with the lamp A1-II, a resistor R and a diode which are connected in series at the same time.

When the local selection is carried out, the channel selection relays DXJI and DXJII can be controlled through the group I and group II selection switches; when the remote control is selected, the I group selector switch and the II group selector switch are shielded and cannot control the channel selection relay, and the channel selection relay can be controlled only through the I group remote control and the II group remote control.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms current diverter switch, selector switch, board, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A multi-path current slitting device is characterized by comprising a shell, wherein the shell comprises a front panel and a rear panel, an operation structure is arranged on the front panel, an input and output structure is arranged on the rear panel, a power supply structure and a current slitting structure are arranged inside the shell, the power supply structure comprises a wide voltage processing circuit, the wide voltage processing circuit comprises a chip U1, and a pin 1 of a chip U1 is connected with a power field-effect tube Q1 through a resistor R3; pin 2 is grounded through a capacitor C4 and is connected with pin 1 of a capacitor C2 and a coil T2 through a resistor R2, pin 2 is connected with pin 3 of a coil T2 through a resistor R5 and a diode D6, resistor R2 is connected with pin 2 of the coil T2 through a resistor R4, a resistor R7 and a capacitor C5 which are connected in parallel, and is connected with a power field effect transistor Q1 through a diode D5; a pin 4 of the chip U1 is grounded through a resistor R6 and a resistor R8 which are connected in parallel and is connected with a power field effect transistor Q1; pin 5 of chip U1 is grounded through resistor R19; pin 7 of chip U1 is grounded through capacitor C3; a pin 8 of a chip U1 is grounded and is grounded through a diode C1 and a diode C2 which are connected in series, the pin 8 of the chip U1 is grounded through a diode C3 and a diode C4 which are connected in series, a diode C1 and a diode C2 which are connected in series are connected with a coil T1, the other end of the coil T1 is connected with a pin 2 of a chip P1 through a resistor F1, the diode C3 and a diode C4 which are connected in series are connected with a coil T1, the other end of the coil T1 is connected with a pin 1 of a chip P1, a pin 2 of the chip P1 is grounded, and the pin 1 of the chip P1 is connected with the pin 2 through a capacitor C1; pin 4 of coil T2 is grounded; pin 5 of coil T2 is connected to pin 1 of chip P2 through diode D8, and is connected to the ear th end through resistors R11 and R12, diode D8 is connected to chip U2 through resistor R9, and is connected to pin 3 of chip U3 through resistor R10, pin 1 of chip U3 is connected to the ear th end through resistor R12, and pin 2 of chip U3 is connected to the ear th end; pin 6 of coil T2 is connected to the ear terminal; pin 7 of coil T2 is connected to pin 8 of coil T2 through diode D7 and capacitor C6; a pin 8 of the coil T2 is connected with a pin 5 of the coil T2 through a capacitor C7, a capacitor C8 and a capacitor C10 and is also connected with an EARTH end; the EARTH terminal is coupled to ground through capacitor C11.

2. A multi-path current splitting device according to claim 1, characterized in that the front panel is provided with a current switch (1), a circuit breaking structure (2), a selector switch (3), a fuse (4) and a power switch (5).

3. A multiple current splitting device according to claim 2, characterized in that the current diverter switch (1) comprises three positions "0", "I" and "II".

4. A multiple current slitting device according to claim 2, characterized in that the selector switch (3) comprises a remote gear and a local gear.

5. The apparatus of claim 1, wherein the current splitting structure comprises pins 101 as current input terminals, pins 105 and pins 109 as current output terminals, and the two normally open nodes DXJI-1 and DXJI-1 are connected therebetween.

6. A multi-path current splitting device according to claim 5, wherein the current splitting structure further comprises a remote gear and a local gear of the selector switch (3), and the remote gear and the local gear of the selector switch (3) are connected with the voltage output end; the I group gear and the II group gear of the current switch (1), the remote gear and the local gear of the selector switch (3) are sequentially connected with the voltage input end through a DX1 switch, a DX and a diode which are connected in parallel, the I group gear of the current switch (1) is sequentially connected with the voltage input end through a DX1-1 and a channel selection relay DXJI, and the channel selection relay DXJI is simultaneously connected with a lamp A1-I, a resistor R and a diode which are connected in series in parallel; the group II gear of the current switch (1) is connected with the voltage input end through DX1-2 and a channel selection relay DXJII in sequence, and the channel selection relay DXJII is connected with the lamp A1-II, a resistor R and a diode which are connected in series at the same time.