Drainage control system of water collecting well

Abstract

The utility model relates to a drainage control system of a water collecting well, the system comprises a controller, a plurality of drainers and a plurality of liquid level floaters, each liquid level floater corresponds to at least one drainer, and the liquid level floaters are fixed at different horizontal height positions in the water collecting well; the plurality of liquid level floaters are all connected with the controller, the controller is respectively connected with different drainers, and each liquid level floater is used for sending a control signal to the controller when the water level in the water collecting well reaches the fixed horizontal height position of the liquid level floater, so that the controller starts and stops the corresponding drainer.

Description

Technical Field

[0001] The present disclosure relates to the technical field of automatic control of hydropower stations, and in particular to a drainage control system for a water collection well. Background Art

[0002] Whether the leaked water in a hydropower station can be discharged normally plays a vital role in the safe and stable operation of the hydropower station. If it cannot be discharged normally and in time, it is likely to cause accidents such as flooding of equipment or even factory buildings, posing a serious hidden danger to the safe operation of the power station. In a hydropower station, the drainage system usually uses a collection well to collect and store leaked water. When the water level in the collection well reaches a certain height, the water is pumped out by a centrifugal pump and discharged into the tailwater.

[0003] In traditional sump drainage control systems, drain activation and deactivation typically rely on manual monitoring or simple float switches. These systems often lack precise water level monitoring and intelligent control, resulting in low drainage efficiency, high energy consumption, and, when unattended, the risk of overflows due to excessive water levels. Furthermore, the lack of effective water level monitoring and early warning mechanisms makes these systems sluggish in responding to sudden rainfall or large drainage demands, hindering timely adjustment of drainage strategies, thus compromising drainage effectiveness and system safety. Utility Model Content

[0004] To overcome the problems existing in the related art, the present disclosure provides a drainage control system for a water collection well, the system comprising a controller, a plurality of drainers, and a plurality of liquid level floats, each of the liquid level floats corresponding to at least one of the drainers, and each of the liquid level floats being fixed at a different level in the water collection well;

[0005] The plurality of liquid level floats are all connected to the controller, and the controller is respectively connected to different drainers. Each of the liquid level floats is used to send a control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller starts and stops the corresponding drainer.

[0006] Optionally, the drainer includes an exhaust solenoid valve, a water pump, a drain pipe and a water pump;

[0007] For each of the drainers, one end of the water pump is located in the water collection well, the other end of the water pump is connected to the water inlet of the water pump, one end of the drainage pipe is connected to the water outlet of the water pump, and the other end of the drainage pipe is connected to an external drainage point;

[0008] The exhaust solenoid valve is installed on the drain pipe and / or the water suction pipe, and is used to exhaust the air in the drain pipe and the water suction pipe before the water pump is started.

[0009] Optionally, the plurality of drains include a main drain and a backup drain, and each of the drains takes turns serving as the main drain.

[0010] Optionally, the plurality of liquid level floats include a first liquid level float, which is used to send a first control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller opens the main drainer.

[0011] Optionally, the multiple liquid level floats also include a second liquid level float, the fixed horizontal height position of the second liquid level float is lower than the first liquid level float, and the second liquid level float is used to send a second control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller turns on the backup drainer.

[0012] Optionally, the multiple liquid level floats also include a third liquid level float, the fixed horizontal height position of the third liquid level float is lower than the first liquid level float, and the third liquid level float is used to send a third control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller closes all the drainers.

[0013] Optionally, the multiple liquid level floats also include a fourth liquid level float, the fixed horizontal height position of the fourth liquid level float is higher than the second liquid level float, and the fourth liquid level float is used to send a water level alarm signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller turns on all the drainers and issues a water level alarm.

[0014] Optionally, the system further comprises a liquid level sensor, which is connected to the controller and is used to measure the water level in the water collection well.

[0015] Optionally, the controller includes a timing module, a counting module and an equipment detection module. The timing module is used to collect the start-up and running time of the drainer, the counting module is used to record the number of starts and stops of the drainer, and the equipment detection module is used to detect equipment failures in the drainage control system.

[0016] Optionally, the system further includes a public alarm subsystem, which is connected to the controller.

[0017] The above device saves a lot of manpower costs and ensures that the water level in the water collection well is always at a safe level, thereby improving drainage efficiency and the safety of the water collection well, making the drainage control system more stable and reliable.

[0018] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0020] Figure 1 It is a structural diagram of a drainage control system according to an exemplary embodiment.

[0021] Figure 2 It is a schematic structural diagram of a drainer according to an exemplary embodiment.

[0022] Figure 3 The figure is a schematic diagram showing the connection between a drainer and a controller according to an exemplary embodiment.

[0023] Figure 4 The figure is a schematic diagram showing the arrangement of a liquid level float according to an exemplary embodiment.

[0024] Figure 5 The figure is a schematic structural diagram of a controller according to an exemplary embodiment.

[0025] Description of Reference Numerals

[0026] Drainage control system 10, controller 100, drainer 200, liquid level float 300, liquid level sensor 400, public alarm subsystem 500, exhaust solenoid valve 201, water pump 202, drain pipe 203, suction pipe 204, timing module 101, counting module 102 and equipment detection module 103, first liquid level float 301, second liquid level float 302, third liquid level float 303 and fourth liquid level float 304. DETAILED DESCRIPTION

[0027] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0028] It should be noted that all actions of acquiring signals, information or data in the present disclosure are carried out in compliance with the corresponding data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0029] In related technologies, drainage systems usually use PID (Proportional, Integral Derivative) control methods or variable frequency control methods. The PID control method controls the speed and flow of the centrifugal pump by feedback adjustment of the centrifugal pump output flow or pressure signal. However, if the parameters are not adjusted in time when the flow or pressure changes greatly, safety accidents such as factory flooding are likely to occur, posing a major safety hazard. The variable frequency control method adjusts the output flow and pressure of the centrifugal pump by changing the motor speed to achieve automatic control. However, the variable frequency control method requires a frequency converter and a drive motor that supports variable frequency. There are more devices and more failure points, which greatly increases the failure rate of the drainage system.

[0030] In view of this, the present disclosure provides a drainage control system for a water collection well. Figure 1 This is a structural diagram of a drainage control system according to an exemplary embodiment. Figure 1 As shown, the drainage control system 10 includes a controller 100, multiple drainers 200 and multiple liquid level floats 300, each of the liquid level floats 300 corresponds to at least one of the drainers 200, and each of the liquid level floats 300 is fixed at a different horizontal height position in the water collection well.

[0031] Controller 100 can be a Programmable Logic Controller (PLC). PLCs can be programmed using programming languages ​​such as SFC (Sequential Function Chart), LD (Ladder Diagram), and FBD (Function Block Diagram). By programming the PLC, automated control functions can be achieved. Compared to PID control and variable frequency control, PLC control offers greater flexibility and scalability, comprehensively improving the safety of hydropower plants.

[0032] The multiple liquid level floats 300 are all connected to the controller 100, and the controller 100 is respectively connected to different drainers 200. Each of the liquid level floats 300 is used to send a control signal to the controller 100 when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller 100 starts and stops the corresponding drainer 200.

[0033] In one embodiment, see Figure 3As shown, each liquid level float 300 is fixed at a different horizontal height position in the water collection well, that is, each liquid level float 300 is used to sense a specific water level. The liquid level float 300 can be fixed by a variety of methods such as a bracket, rope, chain, magnetism, etc. to fix the liquid level float 300 at its corresponding horizontal height position. A sensing switch is provided in the liquid level float 300, and the sensing switch is in a normally open state. When the water level in the water collection well rises to the water level fixed by the liquid level float 300, the liquid level float 300 will rise with the water level to trigger the sensing switch to close, so that the liquid level float 300 sends a control signal to the controller 100.

[0034] In one embodiment, the control signal is a switching signal, that is, a digital signal "1" and "0". When the sensing switch in the liquid level float 300 is in the open state, the liquid level float 300 sends a digital signal "0" to the controller 100. When the sensing switch in the liquid level float 300 is in the open state, the liquid level float 300 sends a digital signal "1" to the controller 100. Different liquid level floats 300 can be made to correspond to different wiring circuits through the PCL junction box, so that when the controller 100 receives a control signal sent by any liquid level float 300, it can control the corresponding drainer 200 to open or close, or issue a high water level alarm.

[0035] In one embodiment, the liquid level float 300 includes a first liquid level float, which corresponds to a first preset water level and a first drainer. When the accumulated water level in the sump reaches the first preset water level, the liquid level switch in the first liquid level float closes, and the controller 100 receives the switch signal "1" sent by the first service switch, and the controller starts the first drainer accordingly. The first drainer includes a first exhaust solenoid valve and a first water pump. The controller 100 first controls the first exhaust solenoid valve to discharge the gas in the drainage pipe corresponding to the first water pump to ensure the smooth flow of the drainage pipe. When the exhaust valve is opened for a preset exhaust time, the controller 100 controls the first water pump to open to drain the accumulated water in the sump.

[0036] In another embodiment, the controller 100 can not only start and stop the drainer 200 , but also control the temperature and flow of the drainer 200 .

[0037] For example, the controller 100 can detect the temperature of the drain 200 in real time to ensure that the drain 200 operates within a safe and efficient preset temperature range after startup. If the temperature of the drain 200 is higher than the preset temperature range, the controller 100 can adjust the operating parameters of the drain 200 or take other measures to reduce the temperature of the drain 200, such as reducing the maximum flow rate of the drain 200 or starting the drain cooling system. In addition, the controller 100 issues an equipment fault alarm when the temperature of the drain 200 is higher than the preset temperature range to notify the staff to perform timely maintenance on the drain 200.

[0038] As another example, the controller 100 can also monitor the drainage flow of the drainer 200 in real time to ensure that the drainage efficiency of the drainer 200 meets the new design requirements. The controller 100 can control the drainage flow of the drainer 200 by adjusting the operating speed or valve opening of the drainer 200.

[0039] The above device saves a lot of manpower costs and ensures that the water level in the water collection well is always at a safe level, thereby improving drainage efficiency and the safety of the water collection well, making the drainage control system more stable and reliable.

[0040] Optionally, Figure 2 This is a structural diagram of a drain according to an exemplary embodiment. Figure 2 As shown, the drainer 200 includes an exhaust solenoid valve 201 , a water pump 202 , a drain pipe 203 and a water pumping pipe 204 .

[0041] For each of the drainers 200, one end of the pumping pipe 204 is located in the water collection well, the other end of the pumping pipe 204 is connected to the water inlet of the water pump 202, one end of the drainage pipe 203 is connected to the water outlet of the water pump 202, and the other end of the drainage pipe 203 is connected to an external drainage point.

[0042] The exhaust solenoid valve 201 is installed on the drain pipe 203 and / or the water suction pipe 204 . The exhaust solenoid valve 201 is used to exhaust the air in the drain pipe 203 and the water suction pipe 204 before the water pump 202 is started.

[0043] The water inlet of the water pumping pipe 204 is usually located at the bottom of the water collection well wall.

[0044] In one embodiment, after receiving the control signal sent by the liquid level float 300, the controller 100 controls the corresponding drainer 200 to start, and the drainer 200 can drain the water in the water collection well through the following steps.

[0045] First, the drainer 200 starts the exhaust solenoid valve 201 to exhaust the air in the drain pipe 203 and the pumping pipe 204, ensuring that the water pump 202 forms the necessary vacuum environment, so that the water in the water collection well can be effectively discharged, wherein the water pump 202 is a centrifugal pump.

[0046] Then, when the exhaust solenoid valve 201 is activated for a first preset time, the controller 100 soft-starts the water pump 202, and the water pump 202 starts to run, pumping water out of the water collection well through the pumping pipe 204 and discharging the water to an external drainage point through the drain pipe 203.

[0047] Finally, if the water level drops to the preset pump-stop level after the water pump 202 has been running for the second preset time, the controller 100 controls the drainer 200 to stop. If the water level does not drop to the preset pump-stop level after the water pump 202 has been running for the second preset time, it is determined that the water pump has timed out and a timeout alarm is issued. For example, the water pump with timed out is displayed on the user page or the maintenance personnel is notified through an alarm bell to promptly repair the faulty water pump.

[0048] Optionally, the plurality of drains 200 include a main drain and a backup drain, and each of the drains serves as the main drain in turn.

[0049] It is worth noting that the main drainer is the drainer 200 that is preferentially used among the multiple drainers 200. Among the multiple liquid level floats 300 used to start the drainers 200, the liquid level float 300 corresponding to the main drainer is fixed at the lowest horizontal height position. The other drainers except the main drainer serve as backup drains.

[0050] In one embodiment, each drainer is numbered and used as a main drainer in sequence according to the number. The backup drainers are used in sequence according to the number, and the main drainer is replaced once every preset replacement time.

[0051] For example, three drainers 200 are numbered, and the three drainers 200 are drainer No. 1, drainer No. 2, and drainer No. 3 respectively. The preset replacement time is 2 hours. The multiple liquid level floats 300 include liquid level float No. 1, liquid level float No. 2, and liquid level float No. 3, whose horizontal height positions are from low to high. First, drainer No. 1 is used as the main drainer, and drainers No. 2 and No. 3 are used as backup drainers, that is, drainer No. 1 corresponds to liquid level float No. 1, drainer No. 2 corresponds to liquid level float No. 2, and drainer No. 3 corresponds to liquid level float No. 3. When the controller 100 receives the control signal of liquid level float No. 1, it controls drainer No. 1 to open. When the controller 100 receives the control signal of liquid level float No. 2, it controls drainer No. 2 to open. When the controller 100 receives the control signal of liquid level float No. 3, it controls drainer No. 3 to open. After running in this manner for 2 hours, drain No. 2 is used as the main drain, and drains No. 3 and 1 are used as backup drains. That is, drain No. 2 corresponds to liquid level float No. 1, drain No. 3 corresponds to liquid level float No. 2, and drain No. 1 corresponds to liquid level float No. 3. When the controller 100 receives a control signal from liquid level float No. 1, it controls drain No. 2 to open. When the controller 100 receives a control signal from liquid level float No. 2, it controls drain No. 3 to open. When the controller 100 receives a control signal from liquid level float No. 3, it controls drain No. 1 to open. After drain No. 2 is used as the drain for another 2 hours, drain No. 3 is used as the main drain, and drains No. 1 and 2 are used as backup drains.

[0052] By changing the correspondence between the drainer 200 and the liquid level float 300 through the controller 100 or the PLC junction box, multiple drainers can be used in turn as main drainers. This can effectively reduce the working time of the drainer in a short period of time, avoid problems such as decreased water pump efficiency, damage and aging, or drainage pipe blockage caused by long-term use of the drainer, and help extend the service life of the equipment.

[0053] Alternatively, see Figure 4 As shown, the multiple liquid level floats 300 include a first liquid level float 301, which is used to send a first control signal to the controller 100 when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller 100 opens the main drainer.

[0054] Among them, the main drainer may include one or more drainers 200, that is, when the water level in the collection well reaches the horizontal height corresponding to the first liquid level float 301, the controller 100 may control one or more drainers 200 to open. The number of drainers 200 corresponding to the main drainer can be determined according to the scale of the collection well, weather factors and the drainage volume of the hydropower station where the collection well is located.

[0055] Alternatively, see Figure 4 As shown, the multiple liquid level floats 300 also include a second liquid level float 302, and the fixed horizontal height position of the second liquid level float 302 is lower than the first liquid level float 301. The second liquid level float 302 is used to send a second control signal to the controller 100 when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller 100 opens the backup drainer.

[0056] Among them, the backup drainer may include one or more drainers 200, that is, when the water level in the water collection well reaches the horizontal height corresponding to the second liquid level float 302, the controller 100 may control one or more drainers 200 to open. The backup exhaust water and the main drainer are redundantly designed and can be used interchangeably to ensure that the water level in the water collection well is effectively controlled.

[0057] Alternatively, see Figure 4 As shown, the multiple liquid level floats 300 also include a third liquid level float 303, and the fixed horizontal height position of the third liquid level float 303 is lower than the first liquid level float 301. The third liquid level float 303 is used to send a third control signal to the controller 100 when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller 100 closes all the drainers.

[0058] In one embodiment, in order to prevent the water pump 202 from starting frequently, the controller 100 will control the drainer 200 to delay shutting down. For example, when the water level reaches the preset pump-stop water level, that is, after the controller 100 receives the third control signal sent by the above-mentioned third liquid level float 303, the controller 100 will delay for the preset delay time and then control the drainer 200 to stop running to ensure that the water level in the water collection well is below the preset pump-stop water level, preventing the water pump 202 of the drainer 200 from starting and stopping frequently, thereby improving the service life of the drainer 200.

[0059] The preset pump-stop water level may be the water level corresponding to the third liquid level float 303 .

[0060] Alternatively, see Figure 4 As shown, the multiple liquid level floats 300 also include a fourth liquid level float 304. The fixed horizontal height position of the fourth liquid level float 304 is higher than the second liquid level float 302. The fourth liquid level float 304 is used to send a water level alarm signal to the controller 100 when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller 100 opens all the drainers 200 and issues a water level alarm.

[0061] In one embodiment, a water collection well is located underground within a hydropower station and is used to collect rainwater and domestic wastewater. Multiple liquid level floats 300, including a fourth liquid level float 304, are installed within the water collection well. When the water level rises to the level of the fourth liquid level float 304, it sends a water level alarm signal to the controller 100. Upon receiving the water level alarm signal, the controller 100 immediately activates all drains 200 and issues an audible and visual alarm to alert personnel to check the water collection well.

[0062] In another embodiment, the fourth level float 304 is positioned 1 meter above the wellhead. When continuous rainfall causes the water level in the well to rise to 1 meter above the wellhead, the fourth level float 304 sends a water level alarm signal to the controller 100. Upon receiving the signal, the controller 100 automatically activates the drainer 200 and initiates an emergency drainage plan to prevent the water level in the well from rising too high.

[0063] Optionally, the system further includes a liquid level sensor 400 , which is connected to the controller 100 and is used to measure the water level in the water collection well.

[0064] In one embodiment, the liquid level sensor 400 may be at least one of a pressure water level sensor, an optical liquid level sensor, a resistance liquid level sensor, and a capacitance liquid level sensor.

[0065] It is worth noting that the liquid level float 300 and the liquid level sensor 400 are both used to detect the water level information in the water collection well. The liquid level float 300 has lower cost and is more convenient to maintain. Therefore, the use of multiple liquid level floats 300 can effectively reduce the use cost of the drainage control system 10. At the same time, the liquid level sensor 400 is configured as a redundant design for detecting the water level or the water level information detected by the liquid level float 300 is verified by the liquid level sensor 400, which increases the reliability and safety of the drainage control system 10. At the same time, the liquid level sensor 400 can also enable the user page to display more detailed and accurate water level information.

[0066] In one embodiment, the liquid level sensor 400 may be installed at the bottom of a water collection well.

[0067] Alternatively, see Figure 5 As shown, the controller 100 includes a timing module 101, a counting module 102 and an equipment detection module 103. The timing module 101 is used to collect the start-up and running time of the drainer 200, the counting module 102 is used to record the number of starts and stops of the drainer 200, and the equipment detection module 103 is used to detect equipment failures in the drainage control system 10.

[0068] In one embodiment, the timing module 101 of the controller 100 can count the operating time of each device in the drainage control system 10 to prevent operation timeout. For example, the drainer 200 may time out due to water pump failure or weather reasons, and may not be able to lower the water level in the water collection well to a safe position in time.

[0069] For example, after each drainer 200 is started, the timing module 101 can be used to time the drainer. If the drainer runs for more than the set time after starting but the number is not reduced to the preset pump stop number, it is necessary to promptly notify the staff to check the drainer 200.

[0070] In another example, the exhaust solenoid valve 201 and the water pump 202 in the drainer 200 will be started in sequence. After the exhaust solenoid valve 201 is started, the timing module 101 starts timing. If the exhaust solenoid valve 201 discharges the air within its corresponding time and successfully starts the water pump 202, it is determined that the exhaust solenoid valve 201 has no fault. Otherwise, it is determined that the exhaust solenoid valve 201 has a fault, so as to remind maintenance personnel to repair it in time.

[0071] In one embodiment, the counting module 102 is used to count the number of starts and stops of the drainer 200. If the number of starts and stops of the drainer 200 is greater than a preset number of starts and stops, an alarm message may be sent to notify maintenance personnel to promptly repair the relevant equipment.

[0072] In one embodiment, the device detection module 103 is used to detect whether each device in the drainage control system 10 is operating normally. For example, the device detection module 103 determines whether each device in the exhaust controller system 10 is operating normally through heartbeat detection, status monitoring, and fault diagnosis.

[0073] For example, the equipment detection module 103 can evaluate the drainage efficiency of the drainer 200 and the water accumulation in the collection well based on the single operation time of the drainer 200 collected by the timing module 101 and the number of starts and stops of the drainer 200 collected by the counting module 102 to determine the equipment fault detection result of the drainage control system 10.

[0074] Alternatively, see Figure 1 As shown, the drainage control system 10 further includes a public alarm subsystem 500 , which is connected to the controller 100 .

[0075] In one embodiment, the public alarm subsystem 500 is used to issue an alarm when an equipment failure occurs in the drainage control system 10, and / or the drainer 200 times out, and / or the drainer 200 starts and stops overclocked, and / or the controller 100 receives a water level alarm message.

[0076] The public alarm subsystem 500 may issue an alarm by ringing a ring tone or displaying an alarm message on a user page.

[0077] In one embodiment, each device in the drainage control system 10 is equipped with a status monitoring device. This status monitoring device is used to check whether the corresponding device is operating normally. If it is operating normally, it will send a normal operation signal to the controller 100 at a preset interval. If any device is disconnected, that is, the controller does not receive the normal operation signal of the device, the controller 100 controls the public alarm subsystem 500 to issue an alarm and display the faulty device on the user interface, prompting staff to promptly repair it. For example, if the No. 1 water pump of the No. 1 drain stops operating due to a fault, the controller 100 will send a signal to the public alarm subsystem 500, which will then sound a bell and display the alarm message "No. 1 water pump failure" on the screen of the control center.

[0078] In another embodiment, after any drainer 200 is started, the controller 100 monitors the operating time of the drainer 200 through the timing module 101. Each drainer corresponds to a preset operating time, which corresponds to the drainage efficiency of the drainer. For example, when the main drainer corresponding to the first liquid level float is started, according to the drainage efficiency of the main drainer, the water level in the water collection well will drop to the pump stop water level within 10 minutes, and the main drainer will stop. If the main drainer has not stopped for more than 10 minutes, it means that the main drainer has a fault such as blockage, or new water has been injected into the water collection well. At this time, the controller 100 will control the public alarm subsystem 500 to issue an alarm, for example, displaying "main drainer abnormality" on the station announcement screen.

[0079] In another embodiment, when the controller 100 receives water level alarm information, the public alarm subsystem 500 will sound a bell, display an alarm message of "water level exceeds standard" on the screen in the control room, and automatically send a text message to notify factory managers.

[0080] Timely warnings through the above-mentioned devices can ensure that problems in the drainage control system are responded to quickly, thereby reducing potential damage and risks and effectively improving the safety of the hydropower station.

[0081] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0082] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, this disclosure will not further explain various possible combinations.

[0083] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A drainage control system for a water collection well, characterized in that: The system includes a controller, a plurality of drainers, and a plurality of liquid level floats, each of the liquid level floats corresponds to at least one of the drainers, and each of the liquid level floats is fixed at a different level in the water collection well; The plurality of liquid level floats are all connected to the controller, and the controller is respectively connected to different drainers. Each of the liquid level floats is used to send a control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller starts and stops the corresponding drainer.

2. The drainage control system according to claim 1, characterized in that: The drainer includes an exhaust solenoid valve, a water pump, a drain pipe and a pumping pipe; For each of the drainers, one end of the water pump is located in the water collection well, the other end of the water pump is connected to the water inlet of the water pump, one end of the drainage pipe is connected to the water outlet of the water pump, and the other end of the drainage pipe is connected to an external drainage point; The exhaust solenoid valve is installed on the drain pipe and / or the water suction pipe, and is used to exhaust the air in the drain pipe and the water suction pipe before the water pump is started.

3. The drainage control system according to claim 1, characterized in that: The plurality of drains include a main drain and a backup drain, and each of the drains serves as the main drain in turn.

4. The drainage control system according to claim 3, characterized in that: The plurality of liquid level floats include a first liquid level float, which is used to send a first control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller opens the main drain.

5. The drainage control system according to claim 4, characterized in that: The multiple liquid level floats also include a second liquid level float, the fixed horizontal height position of the second liquid level float is lower than the first liquid level float, and the second liquid level float is used to send a second control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller opens the backup drainer.

6. The drainage control system according to claim 4, characterized in that: The multiple liquid level floats also include a third liquid level float, the fixed horizontal height position of the third liquid level float is lower than the first liquid level float, and the third liquid level float is used to send a third control signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller closes all the drainers.

7. The drainage control system according to claim 5, characterized in that: The multiple liquid level floats also include a fourth liquid level float, the fixed horizontal height position of the fourth liquid level float is higher than the second liquid level float, and the fourth liquid level float is used to send a water level alarm signal to the controller when the water level in the water collection well reaches its own fixed horizontal height position, so that the controller opens all the drainers and issues a water level alarm.

8. The drainage control system according to claim 1, characterized in that: The system further comprises a liquid level sensor connected to the controller, and the liquid level sensor is used to measure the water level in the water collection well.

9. The drainage control system according to claim 1, characterized in that: The controller includes a timing module, a counting module and an equipment detection module. The timing module is used to collect the startup and operation time of the drainer, the counting module is used to record the number of starts and stops of the drainer, and the equipment detection module is used to detect equipment failures in the drainage control system.

10. The drainage control system according to claim 1, characterized in that: The system further comprises a public alarm subsystem connected to the controller.

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