CN209129067U - A kind of water management system - Google Patents

Abstract

The utility model discloses a water supply control system, comprising an upper computer, a control device, a signal acquisition device, at least two liquid level pools, at least two water inlet electric valves, a plurality of water pump motors and the same number of electric valves, The water outlet pipeline; the signal acquisition device transmits the collected data to the control device; the control device converts the analog signal into a digital signal through the A/D conversion module, and then transmits the data to the host computer; the host computer is used to control When the water supply system is turned on and off, when the data transmitted by the control device exceeds its corresponding set threshold, the upper computer controls the alarm device to give an alarm, and at the same time transmits the signals that control the start and stop of multiple pump motors to the control device; the control device is based on This signal controls the startup and shutdown of multiple pump motors. This reduces the probability of water outages and improves the quality of water supply.

Description

A water supply control system

technical field

The utility model relates to the field of water supply systems, in particular to a water supply control system.

Background technique

Nowadays, the domestic water in residential areas and the production water in enterprises basically use frequency conversion water supply. Similar water supply equipment used now is a signal of pressure, liquid level, or temperature collected by the detection device, and the signal is transmitted to the frequency converter from time to time. Or in the programmer, and then perform the speed control operation of the water pump. The biggest advantage of variable frequency water supply is energy saving. The disadvantage is that once the detection device or the frequency converter fails, the entire water supply system will be cut off from water, and the supply cycle of the frequency converter is long, which often leads to residents and residents who have no water for many days. The property company and the water supply company have frictions and disputes, and because of this, the water cutoff has led to the shutdown of the company's production.

Utility model content

The purpose of the present utility model is to overcome the above-mentioned deficiencies in the prior art and provide a water supply control system.

In order to realize the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

A water supply control system, comprising: a host computer, a control device, a signal acquisition device, at least two liquid level pools, at least two water inlet electric valves, a plurality of water pump motors and the same number of electric valves, and water outlet pipes; wherein The water inlet electric valve, the liquid level tank, the water pump motor, the electric valves of the same number, and the water outlet pipeline are connected in sequence.

The signal acquisition device includes a pressure transmitter, a flow meter, a valve opening sensor, and a liquid level transmitter; the signal acquisition device transmits the collected pressure data, flow data, valve opening data, and liquid level data to a the control device.

The control device, after converting the analog signal into a digital signal through an A/D conversion module, transmits the pressure data, the flow data, the valve opening data, and the liquid level data to the host computer.

The upper computer includes an industrial control host, a man-machine interface and a display device; the industrial control host is used to control the opening and closing of the water supply control system; the man-machine interface is used to set pressure thresholds, liquid level thresholds, flow thresholds and valves Opening threshold; when the pressure data, the flow data, the valve opening data, and the liquid level data transmitted by the control device exceed their corresponding set thresholds, the upper computer controls the alarm device to give an alarm , and simultaneously transmit signals for controlling the start-up and shutdown of a plurality of the water pump motors to the control device; the control device controls the start-up and shutdown of a plurality of the water pump motors according to the signals.

Preferably, the pressure transmitter is installed on the inner wall of the water outlet pipe, and is used to detect the pipe pressure of the water outlet pipe, and when the pipe pressure reaches a high pressure threshold, the control device according to the upper The signal transmitted by the machine controls the water pump motor to stop, and at the same time controls the corresponding electric valve to close.

Preferably, the flow meter is installed on the water outlet pipe, and is used to detect the instantaneous flow rate and/or the accumulated flow rate of the water outlet pipe.

Preferably, the valve opening sensor is installed on the electric valve and the water inlet electric valve to detect the opening of the electric valve.

Preferably, the liquid level transmitter is installed in the liquid level tank and is used to detect the water level of the liquid level tank; when the liquid level transmitter detects that the water level of the liquid level tank reaches a high liquid level threshold, the The control device controls the water inlet electric valve to close according to the signal transmitted by the upper computer; when the liquid level transmitter detects that the water level of the liquid level pool reaches the low liquid level threshold, the control device according to the upper computer The transmitted signal controls the water pump motor to stop, and controls the corresponding electric valve to close at the same time.

Preferably, the industrial control host and the control device are connected by means of Ethernet communication.

Preferably, the industrial control host is used to store the pressure data, the flow data, the valve opening data, and the liquid level data transmitted in real time by the control device; The flow data, the valve opening data, and the liquid level data are used to draw a corresponding trend curve.

Preferably, the display device and the man-machine interface of the host computer are liquid crystal touch screens.

Preferably, the control device is a PLC control device, including a programmable controller, a power distribution circuit breaker, a switching power supply, an intermediate relay and a surge protector.

Preferably, the alarm device is an audible and visual alarm.

Compared with the prior art, the beneficial effects of the present utility model:

1. The utility model does not need to rely on software implementation, but takes the programmable logic controller (PLC) and the host computer (such as an industrial computer) as the core, according to the signal collected by the signal acquisition device and the threshold value set by the host computer, to The startup and shutdown of the pump motor, the opening of the electric valve and the opening of the water inlet electric valve are remotely controlled, so as to realize centralized control of the equipment on the entire water supply system, further improve the quality of water supply, and reduce the risk of water outage.

2. In the present utility model, through the control of the water output by multiple pump motors, when one of the pump motors is in the state of maintenance or failure, the other pump motors can be turned on, thereby reducing the probability of water outage.

3. In the present utility model, the control device controls the flow of the water outlet by controlling the opening of the electric valve connected to the pump motor, which is more conducive to the control of the opening and the flow.

4. In the present invention, by using two liquid level tanks, when one liquid level tank is being cleaned, a spare liquid level tank can be used, thereby ensuring continuous water supply.

5. In the present utility model, the parameters in the water supply system are set by the host computer and run automatically, which can reduce the workload, facilitate the observation of the fault location, and eliminate the fault in time.

Description of drawings

Fig. 1 is the structure diagram of the water supply control system;

Figure 2 is a control signal diagram of the water supply control system.

Among them, 1-water inlet pipe, 2-main valve, 3-1-first water inlet electric valve, 3-2-second water inlet electric valve, 4-1-first liquid level tank, 4-2-first water inlet electric valve Two-level tank, 5-1- The first water pump motor, 5-2- The second water pump motor, 5-3- The third water pump motor, 5-4- The fourth water pump motor, 6-1- The first electric valve, 6-2- The second electric valve, 6-3- The third electric valve, 6-4- The fourth electric valve, 7- The outlet pipe, 8- The pressure transmitter.

Detailed ways

The present utility model will be further described in detail below in conjunction with the test examples and specific embodiments. But it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

Example 1

The utility model relates to a water supply control system, comprising: an upper computer, a control device, a signal acquisition device, at least two liquid level pools, at least two water inlet electric valves, a plurality of water pump motors and the same number of electric valves, outlet pipe.

As shown in FIG. 1 , the first water inlet electric valve 3-1 and the second water inlet electric valve 3-2 are respectively connected to the first liquid level tank 4-1 and the second liquid level tank 4-2 through the water inlet pipe 1 , and a main valve 2 is arranged on the water inlet pipe 1 . The first water pump motor 5-1, the second water pump motor 5-2, the third water pump motor 5-3, and the fourth water pump motor 5-4 are connected to the water outlet pipe of the liquid level tank 4, and the first electric valve 6-1 One end is connected with the first water pump motor 5-1, the other end is connected with the water outlet pipe 7, one end of the second electric valve 6-2 is connected with the second water pump motor 5-2, and the other end is connected with the water outlet pipe 7, and the third electric valve 6- 3 One end is connected with the third water pump motor 5-3, the other end is connected with the water outlet pipe 7, one end of the fourth electric valve 6-4 is connected with the fourth water pump motor 5-4, and the other end is connected with the water outlet pipe 7, in the water outlet pipe 7 A pressure transmitter 8 is provided thereon.

As shown in Figure 2, the signal acquisition device includes a pressure transmitter, a flowmeter, a valve opening sensor, and a liquid level transmitter; the signal acquisition device will collect the collected pressure data, flow data, valve opening data, and liquid level data. transmitted to the control unit.

The control device, after converting the analog signal into a digital signal through the A/D conversion module, transmits the pressure data, flow data, valve opening data, and liquid level data to the upper computer.

The upper computer includes an industrial control host, a man-machine interface and a display device; the opening and closing of the water supply control system can be controlled through the industrial control host; the pressure threshold, liquid level threshold, flow threshold and valve opening threshold are set through the man-machine interface; when the control device transmits When the pressure data, flow data, valve opening data, and liquid level data of the pump exceed their corresponding set thresholds, the upper computer controls the alarm device to give an alarm, and at the same time transmits the signals that control the startup and shutdown of multiple pump motors to the control device; control; The device controls the startup and shutdown of multiple water pump motors according to the signal.

In the emergency water supply control system, the model of the pressure transmitter is JYB-KO-WPAG-G, and the model of the liquid level transmitter is the liquid level JYB-KO-Y5AGF-DN40. Flowmeter model CH-LU.

The power specification of the emergency water supply control system is 380VAC, three-phase four-wire system, and the frequency is 50HZ.

In the specific implementation process, the pressure transmitter is installed on the inner wall of the water outlet pipe to detect the pipe pressure of the water outlet pipe. When the pipe pressure reaches the high pressure threshold, the control device controls the pump motor to stop according to the signal transmitted by the upper computer, and at the same time Control the corresponding electric valve to close.

A flow meter, installed on the outlet pipe, is used to detect the instantaneous flow and/or cumulative flow of the outlet pipe.

The valve opening sensor is installed on the electric valve to detect the opening of the electric valve.

Install at least one liquid level transmitter in each liquid level tank to detect the water level of the liquid level tank; when the liquid level transmitter detects that the water level of the liquid level tank reaches the high liquid level threshold, the control device will transmit the information according to the upper computer. The signal controls the water inlet electric valve to close; when the liquid level transmitter detects that the water level in the liquid level pool reaches the low liquid level threshold, the control device controls the pump motor to stop according to the signal transmitted by the upper computer, and controls the corresponding electric valve to close at the same time.

In the specific implementation process, the rated power of the first water pump motor and the third water pump motor is the same as 110KW, and the rated power of the second water pump motor and the fourth water pump motor is the same as 55KW. For example, when the first water pump motor needs to be repaired or is in When the fault state needs to be switched to the third pump motor, start the third pump motor first. When the control device receives the operation signal of the third pump motor, it will gradually close the first electric valve and gradually open the third electric valve. After the electric valve is completely closed, the first water pump motor is shut down, and the third electric valve is opened to full open at the same time.

The industrial control host and the control device are connected by means of Ethernet communication. The industrial control host can be a computer. When using the industrial control host to communicate with the PLC, not only the traditional D-form serial communication can be used, but also the two-wire PROFIBUS-DP communication that is more suitable for industrial control can be used.

The industrial control host is used to store the pressure data, flow data, valve opening data, and liquid level data transmitted by the control device in real time; and draw the corresponding trend curve according to the pressure data, flow data, valve opening data, and liquid level data.

Trend curve, used to record 4 sets of current data, 1 set of flow data, 1 set of pressure data, and 2 sets of liquid level data for real-time and historical trend graph display, the data includes: the first pump motor current, the second pump motor current, The motor current of the third water pump, the motor current of the fourth water pump, the water flow of the water outlet pipe, the water outlet pressure of the water outlet pipe, the liquid level of the first liquid level pool, and the liquid level of the second liquid level pool. By directly setting or modifying the time value of the historical data, the touch screen displays the curve within a period of time from this moment, such as the trend curve within one hour.

A data information chart is also formed in the industrial control host. The data record is mainly used to record the liquid level value of the two liquid level tanks, the pressure value of the water outlet pipe, the current value of the four pump motors, and the instantaneous flow rate and/or accumulation of the water outlet pipe. flow.

The display device and man-machine interface of the upper computer are LCD touch screen.

The display device also displays an alarm record, including: the time when each data alarm signal is generated, the label name in the system, the state of the alarm signal, and the specific alarm description and other information. Such as alarm time, date, number, status, error point, message text, duration and other related alarm information.

The control device is PLC control device, including Siemens S7300 programmable controller, distribution circuit breaker, switching power supply, intermediate relay and surge protector.

The alarm device is an acousto-optic alarm and is connected to the working condition host. It is connected with the working condition host of the upper computer. After receiving the alarm information sent by the working condition host, the sound and light device sends an alarm signal. When the fault is eliminated, the sound and light device returns to normal operation, and the alarm information displayed on the touch screen disappears. .

In the specific implementation process, the water supply system can be operated through on-site local operation and centralized control remote operation.

Among them, in the on-site operation, when the on-site (manual) operation of the equipment on-site control box is selected, the specific start-stop operation of a single device is completed on-site, and the central control room can only monitor the running status of the equipment through the upper computer, and cannot perform any control. .

When the on-site control box of the equipment selects remote (automatic) operation, manual remote operation is performed in the control room through the start and stop buttons on the upper computer, and the operation of a single equipment stops, and the equipment must have certain operating conditions for start and stop. By detecting pressure, liquid level, flow and electric valve opening and other signals and controlling the first, second, third and fourth pump motors to start and stop.

In the automatic operation of remote control, the high and low thresholds of the liquid level in the liquid level pool, the pressure threshold and flow threshold of the outlet pipe, as well as the two inlet electric valves and four electric valves are opened through the human-machine interface of the upper computer. Set the degree threshold.

Claims (10)

1. a kind of water management system characterized by comprising host computer, control device, signal pickup assembly, at least two Liquid level pond, at least two water inlet electrically operated valves, multiple pump motors and same quantity electrically operated valve, outlet conduit；Its Described in water inlet electrically operated valve, the liquid level pond, the pump motor and same quantity electrically operated valve, the outlet pipe Road is sequentially connected；

The signal pickup assembly includes pressure transmitter, flowmeter, valve opening sensor, fluid level transmitter；The signal Collected pressure data, data on flows, valve opening data, liquid level data are transmitted to the control device by acquisition device；

The control device, after converting analog signals into digital signal by A/D conversion module, by the pressure data, institute It states data on flows, the valve opening data, the liquid level data and is transmitted to the host computer；

The host computer, including industrial control host, man-machine interface and display device；The industrial control host is for controlling for water management system The opening and closing of system；The man-machine interface is for being arranged pressure threshold, level threshold, flow threshold and valve opening threshold value； When the pressure data of control device transmission, the data on flows, the valve opening data, the liquid level data are super When crossing its corresponding setting threshold value, the PC control warning device is alarmed, while will control multiple water pump electricity The signal of booting and the shutdown of machine is transmitted to the control device；The control device controls multiple water according to the signal The booting and shutdown of pump motor.

2. a kind of water management system according to claim 1, which is characterized in that the pressure transmitter is installed on institute It states on the inner wall of outlet conduit, for detecting the pipeline pressure of the outlet conduit, when the pipeline pressure reaches high pressure threshold When value, the control device controls the pump motor according to the signal that the host computer transmits and shuts down, while controlling corresponding Electrically operated valve is closed.

3. a kind of water management system according to claim 1, which is characterized in that the flowmeter, be installed on it is described go out On waterpipe, for detecting the instantaneous flow and/or integrated flow of the outlet conduit.

4. a kind of water management system according to claim 1, which is characterized in that the valve opening sensor, installation In on the electrically operated valve and the water inlet electrically operated valve, for detecting the aperture of the electrically operated valve.

5. a kind of water management system according to claim 1, which is characterized in that the fluid level transmitter is installed on institute It states in liquid level pond, for detecting liquid level pool water level；When the fluid level transmitter detects that liquid level pool water level reaches high liquid level threshold value When, the control device controls the water inlet electrically operated valve according to the signal that the host computer transmits and closes；When the liquid level becomes When device being sent to detect that liquid level pool water level reaches low liquid level threshold value, the control device is controlled according to the signal that the host computer transmits The pump motor is shut down, while being controlled corresponding electrically operated valve and being closed.

6. a kind of water management system according to claim 1, which is characterized in that the industrial control host and the control fill Ethernet communication mode was set to couple.

7. a kind of water management system according to claim 1, which is characterized in that the industrial control host, for storing State the pressure data, the data on flows, the valve opening data, the liquid level data of control device real-time Transmission； And according to the pressure data, the data on flows, the valve opening data, the liquid level data, draws out and become accordingly Power curve.

8. a kind of water management system according to claim 1, which is characterized in that the display device of the host computer and people Machine interface is liquid crystal touch screen.

9. a kind of according to claim 1, water management system described in any one of 2,5 or 7, which is characterized in that the control Device is PLC control device, including programmable controller, distributor breaker, Switching Power Supply, intermediate relay and surge protection Device.

10. a kind of water management system according to claim 1, which is characterized in that the warning device is combined aural and visual alarm.