Downhole dual-power-supply automatic drainage control system

Abstract

The utility model discloses an underground dual-power-supply automatic drainage control system which comprises a dual-power-supply automatic switching circuit and a drainage control system. The dual-power automatic switching circuit is connected with the drainage control system; the drainage control system comprises a temperature sensor, a diversion valve, a gate valve, an exhaust valve, a water flow detection switch, a pressure sensor, a water level sensor, a data processing center PLC and an upper computer touch screen. The gate valve is arranged on the main water pipe, the diversion valve is arranged on the diversion pipe, the exhaust valve and the water flow detection switch are arranged on the exhaust pipe, the pressure sensor is arranged at the end, close to the pump body, of the main water pipe, temperature sensors are arranged on the motor and the pump body, and a water level sensor is arranged in the underground water sump. The system has the functions of automatically switching the double power supplies of the control loop and automatically opening and closing the water pump system, the reliability of a drainage system is improved, the number of underground workers is reduced, and production accidents of mine flooding are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of underground drainage automatic control, in particular to an underground dual-power automatic drainage control system, which is an unmanned automatic drainage technology that does not require operators to go to the site when the water level of an underground water tank reaches a certain level. Background Art

[0002] The water pump in the underground mine belongs to the primary load, and the power supply of the water pump motor is a dual-circuit power supply mode. At the same time, the automation level of the underground mine is further improved, the number of workers who need to go down the mine due to manual operation is reduced, and the cost is reduced by choosing to use electricity during valley hours. Therefore, by designing an underground dual-power automatic water pump control system, when the water level in the underground water tank reaches a certain level, the water pump automatically starts, and when the water level drops to a certain level, the water pump automatically stops. When a main circuit is powered off due to a fault, the dual power automatic switching circuit comes into play to ensure that the control circuit can continue to work, thereby improving the reliability of the drainage system. Automatically starting the water pump to drain water also reduces the labor intensity of personnel and avoids manual illegal operations, which is very necessary. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an underground dual-power automatic drainage control system in view of the deficiencies of the above-mentioned prior art. The underground dual-power automatic drainage control system has the functions of automatic switching of dual power supplies in the control loop and automatic opening and closing of the water pump, thereby improving the reliability of the drainage system, reducing the number of underground workers, and preventing production accidents of mine flooding.

[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:

[0005] An underground dual-power automatic drainage control system, comprising a water pump system, a dual-power automatic switching circuit and a drainage control system;

[0006] The water pump system includes a motor, a pump body, a main water pipe, a water diversion pipe and an exhaust pipe, wherein the motor is connected to a motor power supply, the motor is connected to the pump body, the water suction port of the pump body is connected to an underground water tank, the water outlet of the pump body is connected to the main water pipe, the main water pipe is connected to a water diversion pipe, and the exhaust port of the pump body is connected to an exhaust pipe;

[0007] The dual power automatic switching circuit is connected to the drainage control system, and the dual power automatic switching circuit is used to supply power to the drainage control system;

[0008] The drainage control system includes a temperature sensor, a water diversion valve, a gate valve, an exhaust valve, a water flow detection switch, a pressure sensor, a water level sensor, a data processing center PLC and a host computer touch screen; the gate valve is arranged on the main water pipe, the water diversion valve is arranged on the water diversion pipe, the two ends of the water diversion pipe are respectively located on both sides of the gate valve, the exhaust valve and the water flow detection switch are both arranged on the exhaust pipe, the pressure sensor is arranged at one end of the main water pipe close to the pump body, the motor and the pump body are both provided with a temperature sensor, and the underground water tank is provided with a water level sensor; the temperature sensor, the water flow detection switch, the pressure sensor and the water level sensor are all connected to the input end of the PLC, and the output end of the data processing center PLC is simultaneously connected to the motor, the water diversion valve, the gate valve, the exhaust valve and the host computer touch screen.

[0009] As a further improved technical solution of the utility model, the dual power automatic switching circuit includes a dual main circuit, a dual power automatic transfer switch, circuit breakers QF1~QF7 and transformers TM1~TM3; the three-phase power supply led out of one main circuit in the dual main circuit is connected to the common power supply end of the dual power automatic transfer switch through the circuit breaker QF1, the single-phase power supply led out of one main circuit in the dual main circuit is connected to the control power supply end of the dual power automatic transfer switch through the circuit breaker QF3 and the transformer TM1, the three-phase power supply led out of the other main circuit in the dual main circuit is connected to the standby power supply end of the dual power automatic transfer switch through the circuit breaker QF2, the single-phase power supply led out of the other main circuit in the dual main circuit is connected to the control power supply end of the dual power automatic transfer switch through the circuit breaker QF4 and the transformer TM2, the three-phase power supply outputted from the output power supply end of the dual power automatic transfer switch is connected to the drainage control system through the circuit breaker QF5, and the single-phase power supply outputted from the output power supply end of the dual power automatic transfer switch is connected to the drainage control system through the circuit breaker QF6, the transformer TM3 and the circuit breaker QF7 in sequence.

[0010] As a further improved technical solution of the utility model, the three-phase power supply drawn from the two main circuits in the dual main circuit is a three-phase 380V power supply, the single-phase power supply drawn from the two main circuits in the dual main circuit is a single-phase 380V power supply, the power supply output by the single-phase 380V power supply through the circuit breaker QF3 and the transformer TM1 is a single-phase 220V power supply, the power supply output by the single-phase 380V power supply through the circuit breaker QF4 and the transformer TM2 is a single-phase 220V power supply, the output power supply end of the dual power automatic conversion switch outputs a three-phase 380V power supply and the three-phase 380V power supply passes through the circuit breaker QF5 is connected to the gate valve in the drainage control system, the output power supply end of the dual power automatic conversion switch outputs a single-phase 380V power supply, and the single-phase 380V power supply sequentially outputs a single-phase 220V power supply through the circuit breaker QF6, the transformer TM3 and the circuit breaker QF7, the output single-phase 220V power supply is connected to the water diversion valve and the exhaust valve in the drainage control system, the output single-phase 220V power supply is stepped down by the step-down circuit and connected to the temperature sensor, water flow detection switch, pressure sensor, water level sensor, data processing center PLC and host computer touch screen in the drainage control system.

[0011] As a further improved technical solution of the utility model, the gate valve is an electric gate valve, and the water diversion valve and the exhaust valve are both electric ball valves.

[0012] As a further improved technical solution of the utility model, a check valve is also arranged on the main water pipe, and the gate valve is located below the check valve.

[0013] As a further improved technical solution of the utility model, there are two water level sensors, and the two water level sensors are installed at a position far away from the water suction port of the pump body.

[0014] As a further improved technical solution of the utility model, manual stop valves are provided on the water diversion pipe and the exhaust pipe. The manual stop valve on the water diversion pipe is located in front of the water diversion valve, and the manual stop valve on the exhaust pipe is located in front of the exhaust valve.

[0015] As a further improved technical solution of the utility model, the water flow detection switch on the exhaust pipe is located behind the exhaust valve.

[0016] As a further improved technical solution of the utility model, there are four temperature sensors, two of which are respectively arranged at the front and rear ends of the pump body, and the other two temperature sensors are respectively arranged at the front and rear ends of the motor.

[0017] The beneficial effects of the utility model are:

[0018] 1. This kind of underground dual-power automatic water pump control system uses a dual-power automatic switching control circuit to automatically switch to another circuit when one circuit fails in the underground mine water pump dual-circuit power supply system, so that the drainage control system can still work reliably and monitor the operation of related equipment in real time, thereby greatly improving the reliability of the system.

[0019] 2. This kind of underground dual-power automatic water pump control system, through the drainage control system, does not require on-site manual operation by personnel. It controls the relevant equipment through the PLC program to start and stop the water pump system, reducing the number of underground workers. At the same time, the PLC can also be used to select the off-peak power period to start and stop the water pump system, saving electricity costs and avoiding damage to equipment caused by manual illegal operations.

[0020] 3. This is an underground dual-power automatic water pump control system. When the water level in the underground water tank reaches a certain level, the PLC controls the relevant equipment to start the water pump system. The pump body drains the underground water tank. When the water level drops to a certain level, the water pump system automatically stops. Automatically starting the pump to drain water also reduces the labor intensity of personnel and avoids manual illegal operations.

[0021] 4. This underground dual-power automatic water pump control system has a dual-power automatic switching circuit that greatly improves the reliability of the system power supply. When any main circuit is powered off, it can ensure that the water pump automatic control system has power supply, avoiding sudden power failure of the main circuit, motor stoppage, water backflow in the main water pipe, non-action of the check valve, and the gate valve can still be closed, reducing the damage to the pump body caused by the impact of backflow water.

[0022] 5. In this underground dual-power automatic water pump control system, the PLC receives data from two pressure sensors. When the data difference between the two pressure sensors is large, the corresponding alarm information is issued through the control alarm, and the data of the pressure sensor is displayed on the upper computer touch screen to improve the reliability of the water level data. The pressure sensor and temperature sensor are installed, and the PLC collects their data to determine whether the pressure and various temperatures of the pump body are normal during operation, and whether the temperature of the motor connected to the pump body is normal during operation. If it exceeds the set range, the corresponding fault will be displayed on the upper computer touch screen, and the motor in the water pump system will be stopped, so that the pump body stops working. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a dual power switching circuit diagram of the utility model.

[0024] Figure 2 This is a schematic diagram of the relevant equipment of the drainage control system of the utility model.

[0025] Figure 3 This is a schematic diagram of the core electronic control equipment in the drainage control system of the utility model.

[0026] In the figure: A, motor; B, pump body; C, main water pipe; D, water diversion pipe; E, exhaust pipe;

[0027] 1. Gate valve; 2. Water diversion valve; 3. Water flow detection switch; 4. Pressure sensor; 5. Exhaust valve; 6. Pump front axle temperature sensor; 7. Pump rear axle temperature sensor; 8. Motor front axle temperature sensor; 9. Motor rear axle temperature sensor; 10. No. 1 water level sensor; 11. No. 2 water level sensor; 12. Manual stop valve. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] An underground dual-power automatic drainage control system, including: Figure 1 The dual power automatic switching circuit shown in Figure 2 The water pump system and drainage control system shown.

[0030] like Figure 1 As shown, the dual power automatic switching circuit includes a dual main circuit, a dual power automatic transfer switch, circuit breakers QF1~QF7 and transformers TM1~TM3; the three-phase power supply (LA1 LA2LA3) drawn from one main circuit in the dual main circuit is connected to the common power supply terminal of the dual power automatic transfer switch through the circuit breaker QF1, the single-phase power supply (LA1 LA2) drawn from one main circuit in the dual main circuit is connected to the control power supply terminal (AL AN) of the dual power automatic transfer switch through the circuit breaker QF3 and the transformer TM1, and 220V power is provided for the control power supply terminal (AL AN), the three-phase power supply (LB1 LB2 LB3) drawn from the other main circuit in the dual main circuit is connected to the standby power supply terminal of the dual power automatic transfer switch through the circuit breaker QF2, and the single-phase power supply (LB2 LB3) drawn from the other main circuit in the dual main circuit is connected to the control power supply terminal (BL BN) of the dual power automatic transfer switch through the circuit breaker QF4 and the transformer TM2, and 220V power is provided for the control power supply terminal (BL BN) provides a 220V power supply, the three-phase power output from the output power supply end of the dual power automatic conversion switch is connected to the drainage control system through the circuit breaker QF5, and the single-phase power output from the output power supply end of the dual power automatic conversion switch is connected to the drainage control system through the circuit breaker QF6, the transformer TM3 and the circuit breaker QF7 in sequence.

[0031] The three-phase power supply (LA1 LA2 LA3) derived from one of the dual main circuits and the three-phase power supply (LB1 LB2 LB3) derived from the other main circuit are three-phase 380V power supplies, the single-phase power supply derived from one of the dual main circuits and the single-phase power supply derived from the other main circuit are single-phase 380V power supplies, the power output of the single-phase 380V power supply through the circuit breaker QF3 and the transformer TM1 is a single-phase 220V power supply, the power output of the single-phase 380V power supply through the circuit breaker QF4 and the transformer TM2 is a single-phase 220V power supply, the output power supply end of the dual power automatic transfer switch outputs a three-phase 380V power supply and the three-phase 380V power supply is connected to the gate valve 1 in the drainage control system through the circuit breaker QF5 to supply power to the gate valve 1, the output power supply end of the dual power automatic transfer switch outputs a single-phase 380V power supply and the single-phase 380V power supply passes through in sequence The circuit breaker QF6, transformer TM3 and circuit breaker QF7 output a single-phase 220V power supply, which is connected to the water diversion valve 2 and the exhaust valve 5 in the drainage control system to supply power to the water diversion valve 2 and the exhaust valve 5. The output single-phase 220V power supply is connected to the 4 temperature sensors, water flow detection switch 3, pressure sensor 4, No. 1 water level sensor 10, No. 2 water level sensor 11, data processing center PLC and upper computer touch screen in the drainage control system after being stepped down by the step-down circuit. After stepping down, the 4 temperature sensors, water flow detection switch 3, pressure sensor 4, No. 1 water level sensor 10, No. 2 water level sensor 11, data processing center PLC and upper computer touch screen are supplied with power. The 4 temperature sensors are respectively the pump body front axle temperature sensor 6, the pump body rear axle temperature sensor 7, the motor front axle temperature sensor 8 and the motor rear axle temperature sensor 9. The specific structure of the step-down circuit adopts the existing technology.

[0032] The dual power automatic switching circuit greatly improves the reliability of the system power supply. When any main circuit is powered off, it can ensure that the drainage control system has power supply, avoiding sudden power off of the main circuit and the inability of the drainage control system to work. If water in the main water pipe C flows back and the check valve does not operate, the gate valve 1 can still be closed to reduce the damage to the pump body B caused by the impact of the backflow water.

[0033] like Figure 2 As shown, the water pump system includes a motor A, a pump body B, a main water pipe C, a water diversion pipe D and an exhaust pipe E. The motor A is connected to a motor power supply, and the motor power supply is a three-phase 380V power supply. The motor shaft in the motor A is connected to the pump shaft in the pump body B. The water suction port of the pump body B is connected to an underground water tank, the water outlet of the pump body B is connected to the main water pipe C, the main water pipe C is connected to a water diversion pipe D, and the exhaust port of the pump body B is connected to the exhaust pipe E.

[0034] like Figure 2As shown, the drainage control system includes a pump body front axle temperature sensor 6, a pump body rear axle temperature sensor 7, a motor front axle temperature sensor 8, a motor rear axle temperature sensor 9, a water diversion valve 2, a gate valve 1, an exhaust valve 5, a water flow detection switch 3, a pressure sensor 4, a No. 1 water level sensor 10, a No. 2 water level sensor 11, a data processing center PLC and a host computer touch screen; the gate valve 1 is arranged on the main water pipe C, the water diversion valve 2 is arranged on the water diversion pipe D, the two ends of the water diversion pipe D are respectively located on both sides of the gate valve 1, the exhaust valve 5 and the water flow detection switch The switches 3 are all set on the exhaust pipe E, the pressure sensor 4 is connected to one end of the main water pipe C near the pump body B, the motor A and the pump body B are both provided with temperature sensors, and the underground water tank is provided with a No. 1 water level sensor 10 and a No. 2 water level sensor 11; the temperature sensor, the water flow detection switch 3, the pressure sensor 4, the No. 1 water level sensor 10 and the No. 2 water level sensor 11 are all connected to the input end of the PLC, and the output end of the data processing center PLC is simultaneously connected to the motor A, the water diversion valve 2, the gate valve 1, the exhaust valve 5 and the upper computer touch screen. The output end of the data processing center PLC can be connected to the power supply circuit of the motor A, the water diversion valve 2, the gate valve 1, and the exhaust valve 5, and then control the motor A, the water diversion valve 2, the gate valve 1, and the exhaust valve 5 to work.

[0035] The dual power automatic switching circuit is connected to the drainage control system, and the dual power automatic switching circuit is used to power the drainage control system; the dual power automatic switching control circuit provides a three-phase 380V power supply and a single-phase 220V power supply to the drainage control system; the drainage control system is a PLC that controls and processes related equipment actions and data, and the upper computer touch screen can set relevant values ​​and monitor the status of related equipment in real time in the system.

[0036] In this embodiment, the gate valve 1 is an electric gate valve, and the water diversion valve 2 and the exhaust valve 5 are both electric ball valves.

[0037] In this embodiment, a check valve is also provided on the main water pipe C, and the gate valve 1 is located below the check valve.

[0038] In this embodiment, the first water level sensor 10 and the second water level sensor 11 are both installed at a position far away from the water suction port of the pump body B.

[0039] In this embodiment, manual stop valves 12 are provided on both the water diversion pipe D and the exhaust pipe E. The manual stop valve 12 on the water diversion pipe D is located in front of the water diversion valve 2, and the manual stop valve 12 on the exhaust pipe E is located in front of the exhaust valve 5.

[0040] In this embodiment, the water flow detection switch 3 on the exhaust pipe E is located behind the exhaust valve 5 .

[0041] In this embodiment, there are four temperature sensors, of which two temperature sensors (pump body front axle temperature sensor 6 and pump body rear axle temperature sensor 7) are respectively arranged near the front axle and rear axle of pump body B, and the other two temperature sensors (motor front axle temperature sensor 8 and motor rear axle temperature sensor 9) are respectively arranged near the front axle and rear axle of motor A.

[0042] The CPU in the data processing center PLC uses CPU1214. Figure 3 Schematic diagram of the connection between CPU1214 and the touch screen (i.e., the host computer touch screen) is shown in FIG.

[0043] In the drainage control system, the upper computer touch screen can set the start and stop water level and other values ​​and monitor the operating status of related equipment in real time. The data processing center PLC will process the collected data and output corresponding instructions to control related equipment. When the No. 1 water level sensor 10 detects that the water level reaches the starting water level, the data processing center PLC issues an instruction to open the water diversion valve 2 and the exhaust valve 5, and wait until the air inside the pump body B is exhausted, that is, the residual water in the main water pipe C enters the pump body B from the main water pipe C through the manual stop valve 12 and the water diversion valve 2 in the water diversion pipe D, and then flows out from the exhaust port of the pump body B, the exhaust pipe E, the exhaust valve 5, and the water flow detection switch 3. When the water flow detection switch 3 detects that the water flow is flowing out, that is, the pump body B is exhausted, the data processing center PLC receives the water flow signal of the water flow detection switch 3 and issues an instruction to close the exhaust valve 5. Command, exhaust valve 5 is closed, motor A is started, the motor shaft of motor A drives the pump shaft of the pump body to rotate, and the pump body starts to work. After motor A starts and runs normally for a certain period of time, the gate valve 1 on the main water pipe C is opened until it is fully opened, and the water diversion valve 2 is closed. At this point, the start-up process of the water pump system is completed, and the water suction port of the pump body B discharges the water in the underground water tank through the main water pipe C; when the No. 1 water level sensor 10 detects that the water level reaches the stop water level, the gate valve 1 on the main water pipe C is closed. At the same time, the current of motor A gradually decreases from the heavy-load current to the no-load current as the gate valve 1 is closed. After the data processing center PLC receives the signal that the gate valve 1 is closed, the data processing center PLC issues a stop command for motor A. At this time, motor A stops at a low current. After motor A stops, pump body B stops absorbing water, and the water pump system stop process ends.

[0044] Furthermore, a water level sensor No. 10 and a water level sensor No. 2 11 are installed in the underground water tank. Both the water level sensor No. 10 and the water level sensor No. 2 11 are used to detect the water level data in the underground water tank and send the water level data to the data processing center PLC. When the difference between the water level data sent by the two water level sensors received by the data processing center PLC is large, a corresponding alarm message is issued. The alarm message is displayed on the upper computer touch screen to improve the reliability of the water level data. A pressure sensor 4, a pump front axle temperature sensor 6, a pump rear axle temperature sensor 7, a motor front axle temperature sensor 8, and a motor rear axle temperature sensor 9 are installed. The data processing center PLC collects their data to determine whether the pressure and each temperature of motor A and pump body B are normal during operation. If they exceed the set range, the corresponding fault will be displayed on the upper computer touch screen, and motor A will be stopped, and then pump body B will be stopped. Among them, the pressure sensor 4 detects the pressure inside the pump body B, the pump body front axle temperature sensor 6 detects the pump body front axle temperature, the pump body rear axle temperature sensor 7 detects the pump body rear axle temperature, the motor front axle temperature sensor 8 detects the motor front axle temperature, and the motor rear axle temperature sensor 9 detects the motor rear axle temperature.

[0045] Furthermore, the upper water level and the upper upper water level are set in the PLC. When the water level in the underground water tank reaches the upper water level, the water pump system is started within the specified time (usually during the off-peak period), and the pump body B drains the underground water tank. When the water level reaches the upper water level, the water pump system is also started within the non-specified time, and the pump body B drains the underground water tank. The low electricity price during the off-peak period is used to reduce the electricity cost. At the same time, the upper and lower water levels are set to avoid water seepage accidents caused by untimely drainage.

[0046] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. An underground dual-power automatic drainage control system, comprising a water pump system, the water pump system comprising a motor, a pump body, a main water pipe, a water diversion pipe and an exhaust pipe, the motor is connected to the pump body, the water suction port of the pump body is connected to the underground water tank, the water outlet of the pump body is connected to the main water pipe, the main water pipe is connected to the water diversion pipe, and the exhaust port of the pump body is connected to the exhaust pipe; It is characterized in that It also includes dual power automatic switching circuit and drainage control system; The dual power automatic switching circuit is connected to the drainage control system, and the dual power automatic switching circuit is used to supply power to the drainage control system; The drainage control system includes a temperature sensor, a water diversion valve, a gate valve, an exhaust valve, a water flow detection switch, a pressure sensor, a water level sensor, a data processing center PLC and a host computer touch screen; the gate valve is arranged on the main water pipe, the water diversion valve is arranged on the water diversion pipe, the two ends of the water diversion pipe are respectively located on both sides of the gate valve, the exhaust valve and the water flow detection switch are both arranged on the exhaust pipe, the pressure sensor is arranged at one end of the main water pipe close to the pump body, the motor and the pump body are both provided with a temperature sensor, and the underground water tank is provided with a water level sensor; the temperature sensor, the water flow detection switch, the pressure sensor and the water level sensor are all connected to the input end of the PLC, and the output end of the data processing center PLC is simultaneously connected to the motor, the water diversion valve, the gate valve, the exhaust valve and the host computer touch screen.

2. The underground dual power automatic drainage control system according to claim 1 is characterized in that: The dual power automatic switching circuit includes a dual main circuit, a dual power automatic transfer switch, circuit breakers QF1~QF7 and transformers TM1~TM3; the three-phase power supply led out of one main circuit in the dual main circuit is connected to the common power supply end of the dual power automatic transfer switch through the circuit breaker QF1, the single-phase power supply led out of one main circuit in the dual main circuit is connected to the control power supply end of the dual power automatic transfer switch through the circuit breaker QF3 and the transformer TM1, the three-phase power supply led out of the other main circuit in the dual main circuit is connected to the standby power supply end of the dual power automatic transfer switch through the circuit breaker QF2, the single-phase power supply led out of the other main circuit in the dual main circuit is connected to the control power supply end of the dual power automatic transfer switch through the circuit breaker QF4 and the transformer TM2, the three-phase power supply outputted from the output power supply end of the dual power automatic transfer switch is connected to the drainage control system through the circuit breaker QF5, and the single-phase power supply outputted from the output power supply end of the dual power automatic transfer switch is connected to the drainage control system through the circuit breaker QF6, the transformer TM3 and the circuit breaker QF7 in sequence.

3. The underground dual power automatic drainage control system according to claim 2 is characterized in that: The three-phase power supply drawn from the two main circuits in the dual main circuit is a three-phase 380V power supply, the single-phase power supply drawn from the two main circuits in the dual main circuit is a single-phase 380V power supply, the single-phase 380V power supply outputs a single-phase 220V power supply through the circuit breaker QF3 and the transformer TM1, the single-phase 380V power supply outputs a single-phase 220V power supply through the circuit breaker QF4 and the transformer TM2, the output power supply end of the dual power automatic transfer switch outputs a three-phase 380V power supply and the three-phase 380V power supply is connected to the drainage control through the circuit breaker QF5 The gate valve in the system is connected, the output power supply end of the dual power automatic conversion switch outputs a single-phase 380V power supply, and the single-phase 380V power supply outputs a single-phase 220V power supply through the circuit breaker QF6, the transformer TM3 and the circuit breaker QF7 in turn. The output single-phase 220V power supply is connected to the water diversion valve and the exhaust valve in the drainage control system. The output single-phase 220V power supply is stepped down by the step-down circuit and connected to the temperature sensor, water flow detection switch, pressure sensor, water level sensor, data processing center PLC and host computer touch screen in the drainage control system.

4. The underground dual power automatic drainage control system according to claim 1 is characterized in that: The gate valve is an electric gate valve, and the water diversion valve and the exhaust valve are both electric ball valves.

5. The underground dual power automatic drainage control system according to claim 1 is characterized in that: A check valve is also provided on the main water pipe, and the gate valve is located below the check valve.

6. The underground dual power automatic drainage control system according to claim 1, characterized in that: There are two water level sensors, which are installed at positions far away from the water suction port of the pump body.

7. The underground dual power automatic drainage control system according to claim 1, characterized in that: The water diversion pipe and the exhaust pipe are both provided with manual stop valves. The manual stop valve on the water diversion pipe is located in front of the water diversion valve, and the manual stop valve on the exhaust pipe is located in front of the exhaust valve.

8. The underground dual power automatic drainage control system according to claim 1, characterized in that: The water flow detection switch on the exhaust pipe is located behind the exhaust valve.

9. The underground dual power automatic drainage control system according to claim 1, characterized in that: There are four temperature sensors, two of which are respectively arranged at the front and rear ends of the pump body, and the other two are respectively arranged at the front and rear ends of the motor.

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