CN203307913U - Automatic alarm draining device for transformer substation - Google Patents

Abstract

The utility model discloses an automatic alarm drainage device for a substation, which comprises a water pump, a drain pipe and an AC contactor. The drain port of the water pump is connected to the drain pipe. At the bottom, a first water level probe and a second water level probe are respectively provided on the lower and middle parts of the inner wall of the sump. The first water level probe and the second water level probe are respectively connected to the PLC controller through wires, and the PLC controller is connected to the first water level probe through wires. The intermediate relays are connected, the first intermediate relay is connected with the AC contactor through wires, and the PLC controller is respectively connected with the power supply and the signal transmitter through wires. The utility model has the advantages of simple structure, safety and reliability, saving time and labor. For substation ponding caused by thunderstorms in summer, automatic alarm and automatic drainage are implemented to ensure the safe and normal operation of the substation and reduce the labor intensity of management personnel.

Description

Substation automatic alarm drainage device

technical field

The utility model relates to an improvement of a drainage device in a substation, in particular to an automatic alarm drainage device for a substation.

Background technique

There is a lot of rain in summer, and for some low-lying substations, summer flood control is particularly important. At present, water pumps and drainage pipes are generally used for drainage in substations. During daily inspections, if the staff finds stagnant water in the station, they will turn on the water pumps to drain water to prevent the safe operation of critical power equipment. Observation is time-consuming and labor-intensive. At the same time, it cannot be found and processed in time, which reduces work efficiency and sometimes endangers the safe operation of power equipment.

Contents of the invention

The purpose of the utility model is to provide a substation automatic alarm drainage device with simple structure, safety and reliability, saving time and effort, automatically draining the accumulated water in the substation, and sending information to the management personnel to reduce the labor intensity of the management personnel.

In order to achieve the above purpose, the technical solution adopted by the utility model is: the substation automatic alarm drainage device includes a water pump, a drain pipe and an AC contactor, the drain port of the water pump is connected to the drain pipe, and the water pump is connected to the AC contactor through a wire, and the AC The contactor is connected to the power supply, and it is characterized in that: the water pump is placed at the bottom of the sump, and the sump is set in a low-lying place in the substation room, and the first water level probe and the second water level probe are respectively installed at the lower and middle parts of the inner wall of the sump, and the first The water level probe and the second water level probe are respectively connected to the PLC controller through wires, the PLC controller is connected to the first intermediate relay through wires, the first intermediate relay is connected to the AC contactor through wires, and the PLC controller is respectively connected to the power supply and Signal transmitter connection.

The upper part of the inner wall of the sump is provided with a float switch, the float switch is connected with the PLC controller and the second intermediate relay through wires, the second intermediate relay is connected with the AC contactor, the auxiliary contact of the AC contactor is connected with the PLC controller connect.

The beneficial effects of the utility model are: simple structure, safety and reliability, saving time and labor, implementing automatic alarm and automatic drainage for water accumulation in substations caused by summer thunderstorms, ensuring safe and normal operation of substations, and reducing labor intensity of managers.

Description of drawings

Fig. 1 is a schematic diagram of the front view of the structure of the utility model;

In the figure: 1. Water pump; 2. Drain pipe; 3. PLC controller; 4. AC contactor; 5. First intermediate relay; 6. Second intermediate relay; 7. Float switch; 8. Second water level probe ; 9. The first water level probe; 10. The signal transmitter; 11. The sump.

Detailed ways

Make the utility model with reference to accompanying drawing 1. The substation automatic alarm drainage device includes a water pump 1, a drain pipe 2 and an AC contactor 4, the drain of the water pump 1 is connected to the drain pipe 2, the water pump 1 is connected to the AC contactor 4 through a wire, and the AC contactor 4 is connected to the power supply. That is: the water pump 1 is placed at the bottom of the sump 11, and the sump 11 is set in a low-lying place in the substation room, so that the water in the room can be collected into the sump 11 for centralized discharge. The first water level probe 9 and the second water level probe 8, the first water level probe 9 and the second water level probe 8 are respectively connected to the PLC controller 3 through wires, and the PLC controller 3 is connected to the first intermediate relay 5 through wires, the first The intermediate relay 5 is connected to the AC contactor 4 through wires, and the PLC controller 3 is connected to the power supply and the signal transmitter 10 through wires respectively.

The upper part of the inner wall of the sump 11 is provided with a float switch 7, the float switch 7 is connected with the PLC controller 3 and the second intermediate relay 6 through wires, the second intermediate relay 6 is connected with the AC contactor 4, and the AC contactor 4. The auxiliary contact is connected with the PLC controller 3 to realize the state detection of the system itself.

Described PLC controller 3 can adopt Siemens S7-200 series, CPU: 222DC.

When using the utility model, when the water level in the sump 11 rises to the first water level probe 9, the contact of the first water level probe 9 is connected, and the signal is uploaded to the PLC controller 3, and the PLC controller 3 transmits the signal to the signal Transmitter 10 transmits a signal and sends a text message alarm to the on-duty operator of the substation operation and maintenance team, saying, “The cable ditch of XXX substation has entered the water level and has reached the warning water level, and quickly check at the substation”, and transmits the message to the computer on duty of the substation operation and maintenance team through the signal channel. At this time, only an alarm signal is sent out, and the water pump is not started to discharge water; when the water level rises to the second water level probe 8, the contact of the second water level probe 8 is connected, and the signal is uploaded to the PLC controller 3, and the PLC controller 3 passes through the second water level probe 8. An intermediate relay 5 activates the AC contactor 4, turns on the water pump 1 to drain water, and at the same time, the PLC controller 3 transmits the signal to the signal transmitter 10 to transmit the signal, and sends a short message alarm to the person on duty in the operation and maintenance shift of the substation, "XXX substation cable ditch enters Water, the water pump has been started to drain water, and it will be rushed to the substation for emergency rescue", and it will be transmitted to the on-duty microcomputer of the substation operation and maintenance shift through the signal channel; when the first water level probe 9 and the second water level probe 8 fail, the signal cannot be sent out in time, when the water level When it rises to the float switch 7, after the float switch 7 is turned on, the AC contactor 4 is started directly through the second intermediate relay 6 to turn on the power switch of the water pump 1 to force drainage, and the signal is transmitted to the PLC controller 3, The PLC controller 3 sends a text message alarm to the person on duty in the substation operation and maintenance shift through the signal transmitter 10, "The cable ditch of XXX substation has entered water, and the safety of the equipment has been endangered. to the on-duty microcomputer of the substation operation and maintenance shift; when the water pump 1 drains below the first water level probe 9, a text message is sent to the on-duty shift of the substation operation and maintenance shift, "The water ingress in the cable trench of XXX substation has been removed, and the water pump has stopped draining", And through the signal channel to the on-duty microcomputer of the substation operation and maintenance shift, so as to ensure the normal operation of the power equipment; since the auxiliary contact of the AC contactor 4 is connected to the PLC controller 3, through the communication between the AC contactor 4 and the PLC controller 3, The PLC controller 3 can detect the state of the AC contactor 4 and upload the signal of the system running state.

Claims (2)

1. Substation automatic alarm drainage device, including water pump (1), drain pipe (2) and AC contactor (4), the drain port of water pump (1) is connected to drain pipe (2), and water pump (1) is in contact with AC through a wire The AC contactor (4) is connected to the power supply. It is characterized in that: the water pump (1) is placed at the bottom of the sump (11), and the sump (11) is located in a low-lying place in the substation room. In the sump ( 11) The lower and middle parts of the inner wall are provided with a first water level probe (9) and a second water level probe (8), and the first water level probe (9) and the second water level probe (8) communicate with the PLC controller (3 ), the PLC controller (3) is connected to the first intermediate relay (5) through wires, the first intermediate relay (5) is connected to the AC contactor (4) through wires, and the PLC controller (3) is connected to the AC contactor (4) through wires respectively The power supply and the signal transmitter (10) are connected. 2. The substation automatic alarm and drainage device according to claim 1, characterized in that: the upper part of the inner wall of the sump (11) is provided with a float switch (7), and the float switch (7) is controlled by wires and PLC The device (3) is connected with the second intermediate relay (6), the second intermediate relay (6) is connected with the AC contactor (4), and the auxiliary contact of the AC contactor (4) is connected with the PLC controller (3).

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