CN113464200A - Automatic drainage control system and method - Google Patents

Abstract

The invention relates to an automatic drainage control system and a method, wherein a plurality of water guide units which are arranged in parallel are adopted in a drainage subsystem, the plurality of water guide units share one drainage unit, a PLC (programmable logic controller) control unit flexibly selects different water guide units to work according to the current system date, other water guide units which are not in a working state are used as standby, the state information of the whole drainage subsystem is monitored, whether the drainage subsystem works normally or not is judged according to the state information, if the state information is abnormal, the water guide units are flexibly controlled to work, and the problems that the traditional drainage system cannot drain water flexibly, cannot meet the requirements of coal mining and even pollute the environment when the drainage subsystem is unattended and in an emergency situation are avoided.

Description

Automatic drainage control system and method

Technical Field

The invention relates to the technical field of industrial automation, in particular to an automatic drainage control system and method.

Background

At present, the traditional drainage system is still commonly adopted in mines in China, and artificial drainage is also adopted in some places. In some factories, sewage is generally stored in a sewage well and then is discharged to a treatment station in a centralized manner, however, the traditional drainage system has poor emergency capacity and low automation degree, a water pump cannot be automatically started or stopped according to water level or other parameters, and sometimes the water pump is not manually started to discharge sewage when the drainage system is unattended or suddenly discharges large amount of sewage, so that the sewage overflows. This has a very adverse effect. In addition, in the existing drainage system, overflowed sewage flows out along with rainwater in rainy days, so that environmental pollution is caused.

In view of the disadvantages of the existing drainage systems, there is a need to develop an automatic drainage control system and method that can automatically operate unattended.

Disclosure of Invention

The invention aims to provide an automatic drainage control system and method, which solve the problems that the traditional drainage system cannot flexibly drain water under the unattended condition, cannot meet the coal mining requirement and even is easy to pollute the environment.

In order to achieve the purpose, the invention provides the following scheme:

an automatic drainage control system comprises a drainage subsystem and a control subsystem, wherein the control subsystem is used for controlling the drainage subsystem to pump water from a water sump;

the drainage subsystem comprises a drainage unit and a plurality of water guide units connected in parallel;

the water guide unit comprises a negative pressure water suction module and a positive pressure water drainage module;

the negative pressure water absorption module is connected with the water sump through a pipeline, so that the negative pressure water absorption module pumps water from the water sump;

the positive pressure drainage module is respectively connected with the drainage unit and the negative pressure water absorption module, pumps water from the negative pressure water absorption module, and discharges the water through the drainage unit;

the control subsystem comprises a data acquisition unit and a PLC control unit;

the data acquisition unit is arranged in the water sump, the negative pressure water absorption module and the positive pressure drainage module and is used for acquiring state information of the water sump, the negative pressure water absorption module and the positive pressure drainage module;

the PLC control unit is connected with the data acquisition unit and used for acquiring state information acquired by the data acquisition unit, and the PLC control unit is connected with the drainage subsystem and selects different water guide units to work by turns according to the current system date and the state information.

Furthermore, the drainage unit comprises two drainage modules which are respectively a main drainage module and an auxiliary drainage module;

the main drainage module is provided with a main drainage valve and a plurality of first maintenance valves corresponding to the water guide units, and the first maintenance valves are connected with the positive pressure drainage module;

and the auxiliary drainage module is provided with an auxiliary drainage valve and a plurality of second maintenance valves corresponding to the plurality of water guide units, and the second maintenance valves are connected with the positive pressure drainage module.

Furthermore, the negative pressure water absorption module comprises a water absorption section and a negative pressure water tank;

one end of the water suction section is provided with a water suction valve which is inserted into the water bin and used for pumping water from the water bin, the other end of the water suction section is provided with a water outlet of the water suction section, the water outlet of the water suction section is connected with the negative pressure water tank, an air discharge pipeline is arranged on the pipeline of the water suction section, and the end part of the air discharge pipeline is provided with an air discharge electric ball valve;

one side of the negative pressure water tank is provided with a water suction port and is connected with a water outlet of the water suction section through the water suction port, and a first water feeding port is also arranged on a tank body of the negative pressure water tank;

further, the positive pressure drainage module comprises a drainage section and a water pumping device;

the water pumping device comprises a base, a water pump motor and a multi-section pump, wherein the water pump motor and the multi-section pump are connected through a coupler and are arranged on the base;

the multi-section pump comprises a second water feeding port and a third water feeding port, the second water feeding port of the multi-section pump is connected with the first water feeding port of the negative pressure water tank, and the water pump motor drives the multi-section pump to pump water from the negative pressure water tank;

the drainage section comprises a drainage section pipeline, a first drainage port, a second drainage port and a fourth water feeding port, the first drainage port of the drainage section is connected with a first maintenance valve of the main drainage module, the second drainage port is connected with a second maintenance valve of the auxiliary drainage module, and the fourth water feeding port of the drainage section is connected with a third water feeding port of the multi-section water pump;

and a water injection pipeline is arranged on the drainage section pipeline, and a water injection electric ball valve is arranged at the end part of the water injection pipeline.

Furthermore, the data acquisition unit comprises at least one or more of a pipeline flowmeter, a positive pressure sensor, a temperature sensor, a negative pressure sensor, a first liquid level sensor and a second liquid level sensor;

the pipeline flowmeter is arranged on the drainage section pipeline and used for detecting the flow information of the drainage section pipeline;

the positive pressure sensor is arranged on the drainage section pipeline and used for detecting pressure information of the drainage section pipeline;

the temperature sensor is arranged on the water pump motor and used for detecting temperature information of the water pump motor during working;

the negative pressure sensor is arranged in the negative pressure water tank and used for detecting pressure information in the negative pressure water tank;

the first liquid level sensor is arranged in the negative pressure water tank and used for detecting water level information of the negative pressure water tank;

the second liquid level sensor is arranged in the water sump and used for detecting water level information of the water sump.

Further, the PLC control unit is respectively connected with at least one or more of a pipeline flowmeter, a positive pressure sensor, a temperature sensor, a negative pressure sensor, a first liquid level sensor and a second liquid level sensor of the data acquisition unit, and respectively acquires at least one or more of flow information and pressure information of a pipeline of the drainage section, temperature information when a water pump motor works, pressure information and water level information inside the negative pressure water tank and water level information of the water sump;

the PLC control unit respectively with main drain valve a plurality of first maintenance valve assist drain valve a plurality of second maintenance valve a water injection electric ball valve the water pump motor an electronic ball valve of gassing and the valve connection that absorbs water for control opening and closing of each valve.

Further, the control subsystem further comprises a cloud platform server, an APRUS adapter and a monitoring display unit;

the cloud platform server is connected with the PLC control unit through an APRUS adapter and used for storing state information acquired by the PLC control unit and the running condition of the automatic drainage control system so as to allow managers to predict the health condition of the automatic drainage control system, and therefore the overhaul and maintenance period of the automatic drainage control system is determined;

the APRUS adapter is connected with the Internet through interfaces such as a wireless network, a wired network and 4G, is connected with the PLC control unit through a 485 interface, processes, formats and combs data acquired by the PLC control unit into data meeting the specification of the cloud platform server, and uploads the data to the cloud platform server through wireless networks such as 4G/WIFI; the APRUS adapter is provided with a GPS Beidou satellite positioner;

optionally, the cloud platform server includes a basic data platform module, a data analysis application module, and a data display application module;

the basic data platform module is used for receiving and storing data sent by the APRUS adapter, sorting, organizing and associating the data, maintaining a series of logic rules and forming a series of condition trigger mechanisms, providing original monitoring data to the data analysis application module, providing functions of historical data query and historical data download, and simultaneously being capable of issuing information to the APRUS adapter to realize reverse control;

the data analysis application module is used for performing mathematical computation processing and logic judgment on the original monitoring data to form two functional modules of a statistical computation and early warning system, and statistical results obtained by processing are stored in the basic data platform module and are called by the data display application module;

and the data display application module is used for displaying the statistical result to a user in various chart forms, wherein the various chart forms comprise at least one or a combination of several of a curve graph, a dial chart, a bar chart, a card, a list, a map and video monitoring.

Further, the control subsystem further comprises a user side;

the user side is any one of an email box, a computer, a mobile phone and a tablet and is used for logging in a cloud platform server to check and download monitoring data and alarm information;

and receiving detection data and alarm information through a WeChat public number, a mobile phone App, a mobile phone short message and an electronic mailbox of the user side.

The invention also provides an automatic drainage control method, which comprises the following steps:

determining the current date according to the internal clock information of the PLC control unit;

determining a working water guide unit and a drainage module according to the current date;

a positive pressure water drainage module and a negative pressure water absorption module which control the water guide unit to pump water from the water sump;

discharging water of the positive pressure drainage module through the drainage module;

the PLC control unit controls the drainage subsystem to work in turn according to the information acquired by the data acquisition unit.

Further, before controlling the negative pressure water suction module of the water guide unit to pump water from the water sump, the method further comprises:

water injection and air release are carried out on the water guide unit;

the water injection and air release of the water guide unit specifically comprises the following steps:

controlling to open the air-bleeding electric ball valve;

controlling to open the water injection electric ball valve;

and water is injected into the negative pressure water tank through the fourth water feeding port, the third water feeding port, the second water feeding port and the first water feeding port of the water injection electric ball valve and the water injection pipeline.

Further, control positive pressure drainage module and the negative pressure module of absorbing water of water guide unit are drawn water from the sump and are specifically included:

controlling a water pump motor of the positive pressure drainage module to work;

the water pump motor drives the multi-stage pump to pump water from the negative pressure water tank and press the water into the drainage section;

guiding the water to a drainage module by using a drainage section, and draining the water by using the drainage module;

and pumping water from the water bin to the negative pressure water tank through a water suction valve of the water suction section.

Further, the PLC control unit flexibly controls the drainage subsystem to work according to the information collected by the data collection unit, and specifically includes:

acquiring temperature information of a water pump motor during working, which is detected by a temperature sensor;

acquiring first pressure information in the negative pressure water tank detected by a negative pressure sensor;

acquiring flow information of a drainage section pipeline detected by a pipeline flowmeter;

acquiring second pressure information of a drainage section pipeline detected by a positive pressure sensor;

acquiring first water level information of the negative pressure water tank detected by a first liquid level sensor;

acquiring second water level information of the water sump, which is detected by a second water level sensor;

acquiring one or more of temperature information, first pressure information, flow information, second pressure information, first water level information and second water level information through a data acquisition unit;

when the PLC control unit judges that the first pressure information of the negative pressure sensor exceeds a first pressure upper limit threshold value, the first water level information of the first liquid level sensor exceeds a first water level upper limit threshold value or the second water level information of the second liquid level sensor is higher than a second water level upper limit threshold value, a corresponding alarm signal is generated and a manager is reminded, meanwhile, other water guide units which do not work and corresponding maintenance valves are started emergently, and water is drained jointly by combining the water guide units which work;

when the PLC control unit judges that the temperature information of the temperature sensor exceeds the upper temperature limit threshold, generating a corresponding alarm signal and reminding a manager, closing the working water guide unit and the corresponding maintenance valve, and emergently starting other water guide units which are not in work and the corresponding maintenance valves to drain water;

when the PLC control unit judges that the second pressure information of the positive pressure sensor exceeds a second pressure upper limit threshold value or the flow information of the pipeline flowmeter exceeds a flow upper limit threshold value, a corresponding alarm signal is generated and a manager is reminded, and whether a first maintenance valve and a second maintenance valve which are respectively connected with a first drainage port and a second drainage port of the drainage section are opened or not is judged simultaneously, if the first maintenance valve and the second maintenance valve are not opened, the unopened maintenance valve is opened, if the first maintenance valve and the second maintenance valve are both opened, other water guide units which do not work and the corresponding maintenance valves are emergently started, and the water guide units which work are combined together drain water.

According to the specific embodiment provided by the invention, the invention discloses the following technical effects:

the invention provides an automatic drainage control system and method.A plurality of water guide units arranged in parallel are adopted in a drainage subsystem, the plurality of water guide units share one drainage unit, the control system flexibly determines which water guide unit is allowed to work according to the date, other water guide units which are not in a working state are used as standby, when the water guide unit in the working state breaks down, the water guide units can be switched to work in time, and the problems that the traditional drainage system cannot flexibly drain water, cannot meet the requirements of coal mining and even pollutes the environment in unattended and emergent emergency situations are avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a structural diagram of a drainage subsystem in a drainage subsystem of an automatic drainage control system according to embodiment 1 of the present invention;

fig. 2 is a structural diagram of a drainage unit in a drainage subsystem of an automated drainage control system according to embodiment 1 of the present invention;

fig. 3 is a structural diagram of a drainage section of a water guide unit in a drainage subsystem of an automated drainage control system according to embodiment 1 of the present invention;

fig. 4 is a structural diagram of a water pumping device of a water guide unit in a drainage subsystem of an automatic drainage control system according to embodiment 1 of the present invention;

fig. 5 is a structural diagram of a negative pressure water tank of a water guide unit in a drainage subsystem of an automatic drainage control system according to embodiment 1 of the present invention;

fig. 6 is a structural diagram of a water suction section of a water guide unit in a drainage subsystem of an automated drainage control system according to embodiment 1 of the present invention;

fig. 7 is a block diagram of an automated drain control system according to embodiment 2 of the present invention;

fig. 8 is a flowchart of an automated drain control method according to embodiment 3 of the present invention;

fig. 9 is a flowchart of step S8 of an automatic drain control method according to embodiment 3 of the present invention.

Symbol interpretation:

1: a drainage unit; 2: a water guide unit; 1-1: a main drainage module; 1-2: an auxiliary drainage module;

1-1-1: a first service valve; 1-1-2: a main drain valve;

1-2-1: a second service valve; 1-2-2: an auxiliary drain valve;

2-1: a negative pressure water absorption module; 2-2: a positive pressure drainage module;

2-1-1: a negative pressure water tank; 2-1-2: a water absorbing section; 2-2-1: a water pumping device; 2-2-2: a drainage section;

2-1-1-1: a water suction port; 2-1-1-2: a first water delivery port; 2-1-1-3: a negative pressure sensor; 2-1-1-4: a first liquid level sensor;

2-1-2-1: a water suction section pipeline; 2-1-2-2: a water outlet of the water suction section; 2-1-2-3: a water suction valve; 2-1-2-4: an air bleed line; 2-1-2-5: an air bleeding electric ball valve;

2-2-1-1: a base; 2-2-1-2: a water pump motor; 2-2-1-3: a multi-stage pump; 2-2-1-4: a coupling; 2-2-1-5: a temperature sensor; 2-2-1-6: a third water feeding port; 2-2-1-7: a second water delivery port;

2-2-2-1: a drainage section pipeline; 2-2-2-2: a first drain port; 2-2-2-3: a second water discharge port; 2-2-2-4: a pipeline flow meter; 2-2-2-5: a positive pressure sensor; 2-2-2-6: a check valve; 2-2-2-7: an electrically operated valve; 2-2-2-8: a water injection pipeline; 2-2-2-9: a water injection electric ball valve; 2-2-2-10: a shockproof pressure gauge; 2-2-2-11: and a fourth water feeding port.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide an automatic drainage control system and method, which solve the problems that the traditional drainage system cannot flexibly drain water under the unattended condition, cannot meet the coal mining requirement and even is easy to pollute the environment.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example 1:

the invention provides an automatic drainage control system, which comprises a drainage subsystem and a control subsystem, wherein the control subsystem is used for controlling the drainage subsystem to pump water from a sump;

as shown in fig. 1, the drainage subsystem includes a drainage unit 1 and a plurality of water guide units 2;

the water guide unit 2 comprises a negative pressure water suction module 2-1 and a positive pressure water drainage module 2-2;

the negative pressure water absorption module 2-1 is connected with the water sump through a pipeline, so that the negative pressure water absorption module 2-1 pumps water from the water sump;

the positive pressure drainage module 2-2 is respectively connected with the drainage unit 1 and the negative pressure water absorption module 2-1, pumps water from the negative pressure water absorption module 2-1, and discharges the water through the drainage unit 1;

the control subsystem comprises a data acquisition unit and a PLC control unit;

the data acquisition unit is arranged in the water sump, the negative pressure water absorption module 2-1 and the positive pressure drainage module 2-2 and is used for acquiring state information of the water sump, the negative pressure water absorption module 2-1 and the positive pressure drainage module 2-2 during operation;

the PLC control unit is connected with the data acquisition unit and used for acquiring state information acquired by the data acquisition unit, and the PLC control unit is connected with the drainage subsystem and selects different water guide units to work by turns according to the current date and the state information.

In this embodiment, adopt a plurality of water guide units that parallel arrangement set up in drainage subsystem, a plurality of water guide units share a drainage unit, control system's PLC the control unit can select according to the date by turns which water guide unit lets work, other water guide units that are not in operating condition are as reserve, when the water guide unit that is in operating condition breaks down or emergency, can in time switch over reserve water guide unit and work after that, avoided when unmanned on duty and emergency, because can not discharge in a flexible way, can't satisfy the requirement of coal mining, lead to the problem of polluted environment to take place.

In some embodiments, in order to relieve the pressure of using only one pipe for drainage, as shown in fig. 2, the drainage unit 1 includes two drainage modules, a main drainage module 1-1 and an auxiliary drainage module 1-2;

a main drainage valve 1-1-2 and a plurality of first maintenance valves 1-1-1 corresponding to the plurality of water guide units are arranged on the main drainage module 1-1, and the first maintenance valves 1-1-1 are connected with the positive pressure drainage module 2-2;

the auxiliary drainage module 1-2 is provided with an auxiliary drainage valve 1-2-2 and a plurality of second maintenance valves 1-2-1 corresponding to the plurality of water guide units, and the first maintenance valves 1-2-1 are connected with the positive pressure drainage module 2-2.

In specific implementation, the negative pressure water absorption module 2-1 comprises a water absorption section 2-1-2 and a negative pressure water tank 2-1-1;

as shown in fig. 6, one end of the water suction section 2-1-2 is a water suction valve 2-1-2-3 inserted into the sump for pumping water from the sump, the other end of the water suction section is a water suction section outlet 2-1-2-2, the water suction section outlet 2-1-2-2 is connected with the negative pressure water tank 2-1-1, the water suction section is provided with an air discharge pipeline 2-1-2-4, and the end of the air discharge pipeline is provided with an air discharge electric ball valve 2-1-2-5;

as shown in fig. 5, one side of the negative pressure water tank 2-1-1 is provided with a water suction port 2-1-1, and is connected with the water outlet 2-1-2-2 of the water suction section through the water suction port 2-1-1-1, and a tank body of the negative pressure water tank 2-1-1 is further provided with a first water supply port 2-1-1-2;

correspondingly, the positive pressure drainage module 2-2 comprises a drainage section 2-2-2 and a water pumping device 2-2-1;

as shown in fig. 4, the water pumping device 2-2-1 includes a base 2-2-1-1, a water pump motor 2-2-1-2 and a multi-stage pump 2-2-1-3, wherein the water pump motor 2-2-1-2 and the multi-stage pump 2-2-1-3 are connected by a coupling 2-2-1-4, and are disposed on the base 2-2-1-1;

the water pumping device 2-2-1 further comprises a second water supply port 2-2-1-7 and a third water supply port 2-2-1-6, the second water supply port 2-2-1-7 is connected with the first water supply port 2-1-1-2 of the negative pressure water tank 2-1-1, and the water pump motor 2-2-1-2 drives the multi-stage pump 2-2-1-3 to pump water from the negative pressure water tank 2-1-1;

as shown in fig. 3, the drainage section 2-2-2 comprises a drainage section pipeline 2-2-2-1, a first drainage port 2-2-2-2, a second drainage port 2-2-3 and a fourth water delivery port 2-2-2-11, a first water discharge port 2-2-2-2 of the water discharge section 2-2-2 is connected with a first maintenance valve 1-1-1 of the main water discharge module 1-1, a second water discharge port 2-2-3 is connected with a second maintenance valve 1-2-1 of the auxiliary water discharge module 1-2, the fourth water supply port 2-2-2-11 of the drainage section 2-2-2 is connected with the third water supply port 2-2-1-6 of the water pumping device;

a check valve 2-2-2-6, an electric valve 2-2-2-7 and a shockproof pressure gauge 2-2-2-10 are sequentially arranged on the drainage section pipeline 2-2-2-1, so that water flow can flow in two directions;

a water injection pipeline 2-2-2-8 is also arranged on the drainage section pipeline 2-2-2-1, and a water injection electric ball valve 2-2-2-9 is arranged at the end part of the water injection pipeline 2-2-2-8.

Through the detailed description of the structure of each module of the drainage subsystem, firstly, the drainage unit is divided into two drainage modules, namely a main drainage module 1-1 and an auxiliary drainage module 1-2, one drainage module can be used as a working drainage module during normal working, when an unexpected accident situation cannot meet drainage by only depending on one drainage module, the two drainage modules can be started simultaneously, and when the problem that one drainage module is blocked due to faults and cannot work normally, the system can be maintained to drain normally.

Secondly, the negative pressure water absorption mould component is used as a negative pressure water tank and a water absorption section, the positive pressure water drainage mould component is used as a water drainage section and a water pumping device, and a water injection pipeline for injecting water to the water guide unit is further arranged on the water drainage section to provide a foundation for building a negative pressure environment; through pumping device and the negative pressure module of absorbing water be connected, utilize siphon effect to absorb water from the sump through the negative pressure module of absorbing water, avoided traditional drainage system's water pump motor to need work for a long time, lead to the short problem of water pump motor life-span.

In order to enable the PLC control unit to monitor the drainage subsystem in an all-around manner, the data acquisition unit comprises at least one or more of a pipeline flowmeter 2-2-2-4, a positive pressure sensor 2-2-2-5, a temperature sensor 2-2-1-5, a negative pressure sensor 2-1-1-3, a first liquid level sensor 2-1-1-4 and a second liquid level sensor;

as shown in fig. 3, the pipeline flowmeter 2-2-2-4 is disposed on the drainage segment pipeline 2-2-2-1, and is configured to detect flow information of the drainage segment pipeline 2-2-2-1;

the positive pressure sensor 2-2-2-5 is arranged on the drainage section pipeline 2-2-2-1 and used for detecting pressure information of the drainage section pipeline 2-2-2-1;

as shown in fig. 4, the temperature sensor 2-2-1-5 is disposed on the water pump motor 2-2-1-2 and is configured to detect temperature information of the water pump motor 2-2-1-2 during operation;

as shown in fig. 5, the negative pressure sensor 2-1-1-3 is disposed in the negative pressure water tank 2-1-1 and is configured to detect pressure information inside the negative pressure water tank 2-1-1;

the first liquid level sensor 2-1-1-4 is arranged in the negative pressure water tank 2-1-1 and used for detecting water level information of the negative pressure water tank 2-1-1;

the second liquid level sensor is arranged in the water sump and used for detecting water level information of the water sump.

In this embodiment, the PLC control unit is respectively connected to at least one or more of the pipeline flow meter 2-2-4, the positive pressure sensor 2-2-5, the temperature sensor 2-2-1-5, the negative pressure sensor 2-1-3, the first liquid level sensor 2-1-1-4, and the second liquid level sensor of the data acquisition unit, and respectively obtains at least one or more of flow information and pressure information of the drainage section pipeline 2-2-2-1, temperature information of the water pump motor 2-2-1-2 during operation, pressure information and water level information inside the negative pressure water tank 2-1-1, and water level information of the water sump;

the PLC control unit is respectively connected with the main water discharge valve 1-1-2, the first maintenance valves, the auxiliary water discharge valve 1-2-2, the second maintenance valves, the water injection electric ball valve 2-2-9, the water pump motor 2-2-1-2, the air discharge electric ball valve 2-1-2-5, the water suction valve 2-1-2-3, the check valve 2-2-2-6 and the electric valve 2-2-2-7 and used for controlling the opening and closing of the valves.

The control subsystem comprises a PLC control unit and a data acquisition unit through design, each sensor of the data acquisition unit is installed on each part of the drainage subsystem, the PLC control unit is connected with the data acquisition unit and controllable parts in the drainage subsystem, the PLC control unit can acquire state information of each part of the drainage subsystem in real time in the working process of the system, and each part of the drainage subsystem is controlled to work alternately according to the state information.

Example 2:

the embodiment includes the same features as the automatic drainage control system of embodiment 1, and on this basis, as shown in fig. 7, in order to facilitate the management personnel to monitor, overhaul and maintain the control system, the automatic drainage control system further includes a cloud platform server; the cloud platform server is connected with the PLC control unit through an APRUS adapter and a network, and is used for storing state information acquired by the PLC control unit and the running condition of the automatic drainage control system in the cloud platform server so as to allow managers to predict the health condition of the automatic drainage control system, and therefore the overhaul and maintenance period of the automatic drainage control system is determined;

the automatic drainage control system further comprises a monitoring display unit, wherein the monitoring display unit is connected with the PLC control unit and used for displaying information collected by the PLC control unit and various fault information of the automatic drainage control system in the operation process in real time.

In some embodiments, the time periods of peak, valley and flat can be set on the monitoring display unit, and the PLC control unit can reasonably schedule the water pump to start and stop according to the local time periods of peak, valley and flat.

In some embodiments, the PLC control unit is connected to the monitoring display unit through a 485 bus, and reflects parameters such as a system operating state, a sump water level, a negative pressure water tank water level, a positive pressure, a negative pressure, a pipeline flow, and the like in real time in a form of graphics, images, data, characters, control, and the like.

The APRUS adapter is connected with the Internet through interfaces such as a wireless network, a wired network and 4G, is connected with the PLC control unit through a 485 interface, processes, arranges and formats data collected by the PLC control unit, combs the data into a data mode meeting the specification of the cloud platform server, and uploads the data to the cloud platform server through wireless networks such as 4G/WIFI.

In specific implementation, the APRUS adapter is provided with a GPS Beidou satellite positioner, the geographical position information of equipment CAN be displayed in the data display application module in a map form, and the APRUS adapter is provided with abundant data acquisition interfaces and supports interfaces such as RS-485, RS-232 and CAN; the controller such as Siemens, Mitsubishi and the like is supported; IIC interface, can external sensor.

The PLC control unit is of a Siemens S7-200SMART type, is designed in a modular structure, and consists of a PLC module (digital input and output), an AD analog input module, a power supply module and a communication module.

As shown in fig. 7, in some embodiments, the cloud platform server includes an underlying data platform module, a data analysis application module, and a data display application module.

The basic data platform module is used for receiving and storing data sent by the APRUS adapter, sorting, organizing and associating the data, maintaining a series of logic rules and forming a series of condition trigger mechanisms, providing original monitoring data to the data analysis application module, providing functions of historical data query and historical data download, and simultaneously being capable of issuing information to the APRUS adapter to realize reverse control; the basic data platform module can realize functions of historical data query, historical data download and the like.

The data analysis application module is used for performing mathematical computation processing and logic judgment on the original monitoring data to form two functional modules of a statistical computation and early warning system, and statistical results obtained by processing are stored in the basic data platform module and are called by the data display application module; the data analysis application module mainly performs statistical analysis on the original monitoring data, wherein the statistical analysis comprises a maximum value, a minimum value, an average value, a count value, an accumulated value, an integral value and the like, and can generate a statistical report.

The data display application module can display data to users in various chart forms, including graphs, dials, histograms, cards, lists, maps, video monitors, and the like.

As shown in fig. 7, in order to facilitate remote control, in some embodiments, the remote monitoring system further includes a user side, where the user side is any one of an email box, a computer, a mobile phone and a tablet, and is used to log in a cloud platform server to check and download monitoring data, alarm information, and the like; and receiving detection data, alarm information and the like through a WeChat public number, a mobile phone App, a mobile phone short message and an electronic mailbox of the user side.

The embodiment provides an automatic drainage control system, which has the same advantages as those of embodiment 1, and is further provided with a cloud platform server, a monitoring display unit and a user side, wherein state information of a relevant drainage subsystem acquired by a PLC (programmable logic controller) control unit and alarm information of the system during working are uploaded to the cloud platform server in a standardized manner through an APRUS (advanced peripheral run support) adapter, and the standardized data are processed, analyzed and displayed through a basic data platform module, a data analysis application module and a data display application module of the cloud platform server; meanwhile, the monitoring display unit is arranged on the site and can display the alarm information and the state information of the drainage subsystem to a manager in real time, the manager can log in the cloud platform server through the user side to check detection data, the alarm information and the like, and a means for remotely observing the drainage control system is provided.

Example 3:

as shown in fig. 8, a flow of work performed by the automatic drainage control system provided in embodiment 1 is an automatic drainage control method provided in this embodiment, which includes the following steps:

s1, determining the current date according to the internal clock information of the PLC control unit;

s2, determining the working water guide unit 2 and the drainage module according to the current date;

s3, controlling to open the air bleeding electric ball valve 2-1-2-5;

s4, controlling to open the water injection electric ball valve 2-2-2-9;

s5, injecting water into the negative pressure water tank 2-1-1 through the water injection electric ball valve 2-2-9, the water injection pipeline 2-2-2-8, the fourth water delivery port 2-1-2, the third water delivery port 2-2-1-7, the second water delivery port 2-2-1-6 and the first water delivery port 2-2-2-11;

s6, controlling the positive pressure drainage module 2-2 and the negative pressure water absorption module 2-1 of the water guide unit 2 to pump water from the water sump, and discharging the water of the positive pressure drainage module 2-2 through the corresponding drainage module;

and S7, controlling the drainage subsystem to work alternately according to the information collected by the data collection unit.

In specific implementation, as shown in fig. 9, step S6 specifically includes:

s61, controlling a water pump motor 2-2-1-2 of the positive pressure drainage module 2-2 to work;

s62, driving a multi-stage pump 2-2-1-3 to pump water from a negative pressure water tank 2-1-1 and press the water into a drainage section 2-2-2 through the water pump motor 2-2-1-2;

s63, guiding the water to the corresponding drainage module by the drainage section 2-2-2, and draining the water by the drainage module;

s64, pumping water from the water bin to the negative pressure water tank 2-1-1 through the water suction valve 2-1-2-3 of the water suction section 2-1-2, and circulating.

In some embodiments, step S7 specifically includes:

s71, acquiring temperature information of the water pumping device during working, which is detected by the temperature sensor 2-2-1-5;

s72, acquiring first pressure information in the negative pressure water tank detected by the negative pressure sensor 2-1-1-3;

s73, acquiring flow information of the drainage section pipeline detected by the pipeline flowmeter 2-2-2-5;

s74, acquiring second pressure information of the drainage section pipeline detected by the positive pressure sensor 2-2-2-4;

s75, acquiring first water level information of the negative pressure water tank detected by the first liquid level sensor 2-1-1-4;

s76, acquiring second water level information of the water sump, which is detected by the second water level sensor;

s77, when the PLC control unit judges that the first pressure information of the negative pressure sensor 2-1-1-3 exceeds a first pressure upper limit threshold, the first water level information of the first liquid level sensor 2-1-1-4 exceeds a first water level upper limit threshold or the second water level information of the second liquid level sensor is higher than a second water level upper limit threshold, generating a corresponding alarm signal and reminding a manager, and simultaneously, emergently starting other water guide units 2 which do not work and corresponding maintenance valves to jointly drain water in combination with the water guide units 2 which work;

s78, when the PLC control unit judges that the temperature information of the temperature sensor 2-2-1-5 exceeds the upper temperature limit threshold, generating a corresponding alarm signal and reminding a manager, closing the working water guide unit 2 and the corresponding maintenance valve, and emergently starting other water guide units 2 which are not in work and the corresponding maintenance valves to drain water;

s79, when the PLC control unit judges that the second pressure information of the positive pressure sensor 2-2-2-4 exceeds a second pressure upper limit threshold or the flow information of the pipeline flowmeter 2-2-2-5 exceeds a flow upper limit threshold, generating a corresponding alarm signal and reminding a manager, simultaneously judging whether a first maintenance valve 1-1-1 and a second maintenance valve 1-1-2 connected with a first water discharge port 2-2-2-2 and a second water discharge port 2-2-2-3 of a water discharge section 2-2-2 are opened or not, if the first maintenance valve 1-1-1 and the second maintenance valve 1-1-2 are not opened, opening the unopened maintenance valves, and if the first maintenance valve 1-1-1 and the second maintenance valve 1-1-2 are both opened Already opened, the other water guide units 2 not in operation and the corresponding service valves are activated in an emergency, and the water is drained jointly with the water guide units 2 in operation.

In order to prevent the equipment from idle faults caused by long-term non-use of all water pumping devices and pipelines, damp electrical equipment or untimely maintenance to cause that faults cannot be eliminated in time, when the water pumping device of the working water guide unit 2 breaks down and needs to be put into a standby water pumping device in an emergency, the water pumping device cannot be started in time to influence the mine safety; this embodiment has designed 3 water guide unit 2 automatic switching job control, and the control program is with the form of time management, carries out pumping device's rotation and the cooperation of corresponding drainage module and rearranges, and the function takes week as the unit, for example: the water guide unit 2 and the main drainage module 1-1 are opened on Monday, three and five, the water guide unit 2 and the auxiliary drainage module 1-2 are opened on Tuesday, four and six, and the spare water guide unit 2 and the main drainage module 1-1 or the auxiliary drainage module 1-2 are opened on sunday. Within the normal machine time of reversing by turns, if the water guide unit 2 No. 1 that takes turns breaks down this moment, then the system is automatic to cross the time supervisory routine, will open reserve water guide unit 2 No. 3 immediately and carry out the drainage, and send fault information to PLC the control unit, if reserve water guide unit 2 No. 3 also shut down because other reasons such as maintenance, trouble this moment, then the system will start water guide unit 2 No. 2 that is not in the time of taking turns and carry out the drainage this moment, PLC the control unit sends accident warning this moment, remind the maintenance personal to promptly arrive the scene and maintain.

In the normal switching time, if the water level of the water sump suddenly reaches the upper limit water level, the system directly crosses the time management and other locking programs, directly starts the water guide unit 2 and the standby water guide unit 2 in the current switching time, simultaneously opens the main and auxiliary drainage module valves for drainage, and sends out warning.

The water guide unit 2 that judges that the current system date is nimble to select different through PLC the control unit and carries out work, acquire the various status information that the data acquisition unit gathered simultaneously, judge whether drainage subsystem normally works according to status information, if there is status information to take place unusually, then nimble control water guide unit 2 carries out the work of taking turns, when having avoided unmanned on duty and proruption emergency, traditional drainage system can not the drainage in a flexible way, can't satisfy coal mining's requirement, the problem of polluted environment takes place even.

The following describes the automatic drainage control method provided by the present invention by a specific embodiment:

example 4:

step 1: and initializing, namely powering on and initializing the PLC control unit.

Step 2: the internal clock is read.

And step 3: if the week timing in the clock is equal to Monday, three and five, the main drainage valve 1-1-2 is opened, the auxiliary drainage valve 1-2-2 is closed, and the No. 1 water guide unit 2 is electrified. And (4) if the opening return signal of the main drainage valve 1-1-2 is equal to 1 (opening), the closing return signal of the auxiliary drainage valve 1-2-2 is equal to 0 (closing), and executing the step (4), otherwise, outputting a fault.

If the week timing in the clock is equal to Tuesday, Thursday and Hex, the auxiliary drainage valve 1-2-2 is opened, the main drainage valve 1-1-2 is closed, and the No. 2 water guide unit 2 is powered on. And if the main drainage valve signal 1-1-2 is equal to 0 (closed), the auxiliary drainage valve signal 1-2-2 is equal to 1 (open), executing the step 4, otherwise, outputting a fault.

If the week timing in the clock is equal to the weekday, the main drainage valve 1-1-2 is opened, the auxiliary drainage valve 1-2-2 is closed, and the No. 3 water guide unit 2 is electrified. And (4) if the signal of the main drainage valve 1-1-2 is equal to 1 (open), the signal of the auxiliary drainage valve 1-2-2 is equal to 0 (close), and executing the step 4, otherwise, outputting a fault.

And 4, step 4: step 5 is performed if the signal of the first level sensor 2-1-1-4 of the negative pressure water tank 2-1-1 equals 1 (water present). Otherwise, opening the air-bleed and water-injection electric ball valve for delaying for 5 minutes (timing is determined according to the size of the negative pressure water tank 2-1-1 and the water injection flow), if the signal of the first liquid level sensor 2-1-1-4 of the negative pressure water tank 2-1-1 in the delay time is equal to 1 (water is available), executing the step 5, otherwise, outputting a fault alarm.

And 5: and (5) closing the air release valve and the water injection valve, and delaying for 30 seconds. And 6, if the signals of the air-bleeding electric ball valve and the water-filling electric ball valve are equal to 0 (closing), and otherwise, outputting a fault alarm.

Step 6: and (4) data acquisition, if the data of the temperature sensor 2-2-1-5 of the water pump motor 2-2-1-2 is less than a set value W, executing the step 7, and otherwise, outputting a fault alarm.

And 7: and (4) data acquisition, if the data of the second liquid level sensor of the water sump is larger than a set value H, executing the step 8, and if not, continuously executing the data acquisition.

And 8: and (3) opening the electric valve 2-2-2-7 of the water pump for delaying for 30 seconds, executing the step 9 if the signal of the electric valve 2-2-2-7 of the water pump is equal to 1 (opening), and otherwise, outputting a fault alarm.

And step 9: the water pump motor 2-2-1-2 starts to drain water. And (3) if the starting signal of the water pump motor 2-2-1-2 is equal to 1 (starting), executing the step 10, otherwise, outputting a fault alarm.

Step 10: and (3) collecting flow data, delaying for 5 seconds (the delay time is determined according to the starting time of the water pump motor 2-2-1-2), executing the step 11 if the data of the pipeline flowmeter 2-2-2-4 is greater than a set value L1 in the program, and otherwise, outputting a fault alarm. (setting value L1, set according to the drainage capacity of the multistage pump 2-2-1-3)

Step 11: and (3) acquiring positive pressure data, delaying for 5 seconds (the delay time is determined according to the starting time of the water pump motor 2-2-1-2), executing the step 12 if the data of the positive pressure sensor 2-2-2-5 is greater than a set value P1, and otherwise, outputting a fault alarm. (the set value P1 is set according to the pressure value collected when the water pump motor 2-2-1-2 is in the best operation state)

Step 12: and (3) acquiring negative pressure data, delaying for 5 seconds (the delay time is determined according to the starting time of the water pump motor 2-2-1-2), executing the step 13 if the data of the negative pressure sensor 2-1-1-3 is less than the P2, and otherwise, outputting a fault alarm. (setting value P2, which is set according to the data collected when the water pump motor 2-2-1-2 works optimally and has a certain shaking time)

Step 13: and (4) collecting water level data of the water sump, if the data of the second liquid level sensor is less than a set value L2 (the set value L2 is determined according to the depth of the water suction valve 2-1-2-3 of the water suction section 2-1-2 inserted into the water sump, and the value L2 is higher than the height of the water suction valve 2-1-2-3), executing step 14, otherwise, continuously executing data collection.

Step 14: and (3) closing the drainage valve, delaying for 30 seconds, executing the step 15 if the signal of the drainage valve is equal to 0 (closed), and otherwise, outputting a fault alarm.

Step 15: normally turning off the water pump motor 2-2-1-2 and waiting for the next startup for drainage.

This embodiment provides a concrete step about the automatic drainage control method that embodiment 3 provided, in step 3 the PLC control unit selects different collocation modes according to the date in the clock, namely rotate different water guide unit 2 and drainage module according to different dates and carry out the drainage, simultaneously in the course of the work by the information of each sensor of PLC control unit monitoring, output the fault information in real time or continue to carry out, control water guide unit 2 and rotate the work, avoided when unmanned on duty and emergent emergency, traditional drainage system can not discharge water in a flexible way, can not satisfy the requirement of coal mining, even the problem of polluted environment takes place.

The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. An automatic drainage control system is characterized by comprising a drainage subsystem and a control subsystem, wherein the control subsystem is used for controlling the drainage subsystem to pump water from a water sump;

the drainage subsystem comprises a drainage unit and a plurality of water guide units connected in parallel;

the water guide unit comprises a negative pressure water suction module and a positive pressure water drainage module;

the negative pressure water absorption module is connected with the water sump through a pipeline, so that the negative pressure water absorption module pumps water from the water sump;

the positive pressure drainage module is respectively connected with the drainage unit and the negative pressure water absorption module, pumps water from the negative pressure water absorption module, and discharges the water through the drainage unit;

the control subsystem comprises a data acquisition unit and a PLC control unit;

the data acquisition unit is arranged in the water sump, the negative pressure water absorption module and the positive pressure drainage module and is used for acquiring state information of the water sump, the negative pressure water absorption module and the positive pressure drainage module;

the PLC control unit is connected with the data acquisition unit and used for acquiring state information acquired by the data acquisition unit, and the PLC control unit is connected with the drainage subsystem and selects different water guide units to work by turns according to the current date and the state information.

2. The automated drain control system of claim 1, wherein the drain unit comprises two drain modules, a primary drain module and a secondary drain module;

the main drainage module is provided with a main drainage valve and a plurality of first maintenance valves corresponding to the water guide units, and the first maintenance valves are connected with the positive pressure drainage module;

be equipped with on the supplementary drainage module and assist drainage valve and with a plurality of second maintenance valve that water guide unit corresponds, the second maintenance valve with malleation drainage module is connected.

The negative pressure water absorption module comprises a water absorption section and a negative pressure water tank;

one end of the water suction section is provided with a water suction valve which is inserted into the water bin and used for pumping water from the water bin, the other end of the water suction section is provided with a water outlet of the water suction section, the water outlet of the water suction section is connected with the negative pressure water tank, an air discharge pipeline is arranged on the pipeline of the water suction section, and the end part of the air discharge pipeline is provided with an air discharge electric ball valve;

one side of the negative pressure water tank is provided with a water suction port and is connected with a water outlet of the water suction section through the water suction port, and a first water feeding port is also arranged on a tank body of the negative pressure water tank;

the positive pressure drainage module comprises a drainage section and a pumping device;

the water pumping device comprises a water pump motor and a multi-section pump, and the water pump motor is connected with the multi-section pump through a coupling;

the multi-section pump comprises a second water feeding port and a third water feeding port, the second water feeding port of the multi-section pump is connected with the first water feeding port of the negative pressure water tank, and the water pump motor drives the multi-section pump to pump water from the negative pressure water tank;

the drainage section comprises a drainage section pipeline, a first drainage port, a second drainage port and a fourth water feeding port, the first drainage port of the drainage section is connected with a first maintenance valve of the main drainage module, the second drainage port is connected with a second maintenance valve of the auxiliary drainage module through a flange interface, and the fourth water feeding port of the drainage section is connected with a third water feeding port of the water pumping device;

and a water injection pipeline is arranged on the drainage section pipeline, and a water injection electric ball valve is arranged at the end part of the water injection pipeline.

3. The automatic drainage control system of claim 2, wherein the data acquisition unit comprises at least one or more of a pipeline flow meter, a positive pressure sensor, a temperature sensor, a negative pressure sensor, a first liquid level sensor and a second liquid level sensor;

the pipeline flowmeter is arranged on the drainage section pipeline and used for detecting the flow information of the drainage section pipeline;

the positive pressure sensor is arranged on the drainage section pipeline and used for detecting pressure information of the drainage section pipeline;

the temperature sensor is arranged on the water pump motor and used for detecting temperature information of the water pump motor during working;

the negative pressure sensor is arranged in the negative pressure water tank and used for detecting pressure information in the negative pressure water tank;

the first liquid level sensor is arranged in the negative pressure water tank and used for detecting water level information of the negative pressure water tank;

the second liquid level sensor is arranged in the water sump and used for detecting water level information of the water sump;

the PLC control unit is respectively connected with at least one or more of a pipeline flowmeter, a positive pressure sensor, a temperature sensor, a negative pressure sensor, a first liquid level sensor and a second liquid level sensor of the data acquisition unit, and respectively acquires at least one or more of flow information and pressure information of a pipeline at the drainage section, temperature information when a water pump motor works, pressure information and water level information inside the negative pressure water tank and water level information of the water sump;

the PLC control unit respectively with main drain valve a plurality of first maintenance valve assist drain valve a plurality of second maintenance valve a water injection electric ball valve the water pump motor an electronic ball valve of gassing and the valve connection that absorbs water for control opening and closing of each valve.

4. The automated drainage control system of claim 1, wherein the control subsystem further comprises a cloud platform server, an APRUS adapter, and a monitoring display unit;

the cloud platform server is connected with the PLC control unit through an APRUS adapter and used for storing state information acquired by the PLC control unit and the running condition of the automatic drainage control system so as to allow managers to predict the health condition of the automatic drainage control system, and therefore the overhaul and maintenance period of the automatic drainage control system is determined;

the APRUS adapter is connected with the Internet through any one interface of a wireless network, a wired network or 4G, is connected with the PLC control unit through a 485 interface, processes, formats and combs data acquired by the PLC control unit into data meeting the specification of the cloud platform server, and uploads the data to the cloud platform server through any one interface of the wireless network, the wired network or 4G; the APRUS adapter is provided with a GPS Beidou satellite positioner;

the monitoring display unit is connected with the PLC control unit and used for displaying information acquired by the PLC control unit and fault information of the automatic drainage control system in the operation process in real time.

5. The automated drainage control system of claim 4, wherein the cloud platform server comprises a basic data platform module, a data analysis application module, a data display application module;

the basic data platform module is used for receiving and storing data sent by the APRUS adapter, sorting, organizing and associating the data, providing original monitoring data to the data analysis application module, providing functions of historical data query and historical data download, and meanwhile, issuing information to the APRUS adapter to realize reverse control;

the data analysis application module is used for performing mathematical computation processing and logic judgment on the original monitoring data to form two functional modules of a statistical computation and early warning system, and statistical results obtained by processing are stored in the basic data platform module and are called by the data display application module;

and the data display application module is used for displaying the statistical result to a user in various chart forms, wherein the various chart forms comprise at least one or more of a curve graph, a dial chart, a bar chart, a card, a list, a map and video monitoring.

6. The automated drainage control system of claim 5, wherein the control subsystem further comprises a user side;

the user side is any one of an email box, a computer, a mobile phone and a tablet and is used for logging in a cloud platform server to check and download monitoring data and alarm information;

and receiving detection data and alarm information through a WeChat public number, a mobile phone App, a mobile phone short message and an electronic mailbox of the user side.

7. An automatic drainage control method, which is implemented based on the automatic drainage control system of claim 1, and is characterized in that the control method comprises the following steps:

determining the current date according to the internal clock information of the PLC control unit;

determining a working water guide unit and a drainage module according to the current date;

a positive pressure water drainage module and a negative pressure water absorption module which control the water guide unit to pump water from the water sump;

discharging water of the positive pressure drainage module through the drainage module;

and controlling the drainage subsystem to work alternately according to the information acquired by the data acquisition unit.

8. The method for controlling automatic water discharge according to claim 7, further comprising, before the water is drawn from the water sump by the negative pressure water suction module controlling the water guide unit:

water injection and air release are carried out on the water guide unit;

the water injection and air release of the water guide unit specifically comprises the following steps:

controlling to open the air-bleeding electric ball valve;

controlling to open the water injection electric ball valve;

and water is injected into the negative pressure water tank through the fourth water feeding port, the third water feeding port, the second water feeding port and the first water feeding port of the water injection electric ball valve and the water injection pipeline.

9. The method for controlling automatic water drainage according to claim 7, wherein the controlling the positive pressure water drainage module and the negative pressure water suction module of the water guide unit to pump water from the water sump comprises:

controlling a water pump motor of the positive pressure drainage module to work;

the water pump motor drives the multi-stage pump to pump water from the negative pressure water tank and press the water into the drainage section;

guiding the water to a drainage module by using a drainage section, and draining the water by using the drainage module;

and pumping water from the water bin to the negative pressure water tank through a water suction valve of the water suction section.

10. The automatic drainage control method of claim 7, wherein the PLC control unit flexibly controls the drainage subsystem to work according to the information collected by the data collection unit, and specifically comprises the following steps:

acquiring temperature information of a water pump motor during working, which is detected by a temperature sensor;

acquiring first pressure information in the negative pressure water tank detected by a negative pressure sensor;

acquiring flow information of a drainage section pipeline detected by a pipeline flowmeter;

acquiring second pressure information of a drainage section pipeline detected by a positive pressure sensor;

acquiring first water level information of the negative pressure water tank detected by a first liquid level sensor;

acquiring second water level information of the water sump, which is detected by a second water level sensor;

acquiring one or a combination of a plurality of temperature information, first pressure information, flow information, second pressure information, first water level information and second water level information through a data acquisition unit;

when the PLC control unit judges that the first pressure information of the negative pressure sensor exceeds a first pressure upper limit threshold value, the first water level information of the first liquid level sensor exceeds a first water level upper limit threshold value or the second water level information of the second liquid level sensor is higher than a second water level upper limit threshold value, a corresponding alarm signal is generated and a manager is reminded, meanwhile, other water guide units which do not work and corresponding maintenance valves are started emergently, and water is drained jointly by combining the water guide units which work;

when the PLC control unit judges that the temperature information of the temperature sensor exceeds the upper temperature limit threshold, generating a corresponding alarm signal and reminding a manager, closing the working water guide unit and the corresponding maintenance valve, and emergently starting other water guide units which are not in work and the corresponding maintenance valves to drain water;

when the PLC control unit judges that the second pressure information of the positive pressure sensor exceeds a second pressure upper limit threshold value or the flow information of the pipeline flowmeter exceeds a flow upper limit threshold value, a corresponding alarm signal is generated and a manager is reminded, and whether a first maintenance valve and a second maintenance valve which are respectively connected with a first drainage port and a second drainage port of the drainage section are opened or not is judged simultaneously, if the first maintenance valve and the second maintenance valve are not opened, the unopened maintenance valve is opened, if the first maintenance valve and the second maintenance valve are both opened, other water guide units which do not work and the corresponding maintenance valves are emergently started, and the water guide units which work are combined together drain water.

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