Multi-mode water consumption control device

Abstract

The utility model discloses a multi-mode water consumption control device which comprises a programmable logic controller (PLC), a rainfall sensor, a master control valve, a master flow meter, a plurality of branch control valves and branch flow meters, the master control valve and the master flow meter are arranged on a main pipeline, the main pipeline is connected with a plurality of branch pipelines, and the branch pipelines are connected with the master flow meter. Each branch pipeline is provided with a branch control valve and a branch flow meter, and the PLC is connected with the rainfall sensor, the main control valve, the main flow meter, the branch control valves and the branch flow meters through electric signals. According to the system, the rainfall condition is sensed through the rainfall sensor, crops can be reasonably irrigated according to weather, the water consumption of public users is accurately detected and controlled through the branch control valves and the branch flow meters, and the water consumption conditions of all users in the system are monitored through the main control valve and the main flow meter; therefore, unnecessary waste is avoided, water resources are effectively saved, and multi-mode management and control for different users are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water use control, in particular to a multi-mode water consumption control device. Background Art

[0002] With the development of the economy and the changes in the population structure, the demand for water supply will continue to increase, and the contradiction between the increase in water consumption and the shortage of water resources will become more prominent. People use water in daily life, agricultural irrigation, landscaping and other fields more casually, without scientific management and control, resulting in unnecessary waste of water resources.

[0003] The existing technology has a strong targeted control over water resources. For example, patent CN220154827U discloses a system for automatically controlling water consumption based on PLC control, which is mainly used in the medical field; patent CN218564545U discloses a portable farmland irrigation water consumption control device, which is mainly used in the agricultural irrigation field; patent CN114333158A discloses a method and device for controlling water consumption by an intelligent water meter, which is mainly used in people's daily life.

[0004] In summary, there is currently no technology that combines water consumption control in various fields, so there is room for improvement. Utility Model Content

[0005] In order to solve the above technical problems, the utility model discloses a multi-mode water consumption control device, including a PLC controller, a rainfall sensor, a master control valve, a total flow meter, a plurality of sub-control valves and a sub-flow meter, the master control valve and the total flow meter are arranged on a main pipeline, a plurality of sub-pipelines are connected to the main pipeline, each of the sub-pipelines is provided with a sub-control valve and a sub-flow meter, the PLC controller is connected to the rainfall sensor, the master control valve, the total flow meter, the plurality of sub-control valves and the sub-flow meter through electrical signals.

[0006] Furthermore, the control device also includes a host computer, and the host computer is connected to the PLC controller via electrical signals.

[0007] Furthermore, the control device also includes a human-machine interface, which is connected to the PLC controller via electrical signals.

[0008] Furthermore, the PLC controller is a SIMATIC S7-200, SIMATIC S7-300 or SIMATIC S7-1200 series controller.

[0009] Furthermore, the rain sensor is a flow type rain sensor, an electrostatic rain sensor, a capacitive rain sensor or an infrared rain sensor.

[0010] Furthermore, the master control valve and the sub-control valve are electric ball valves, electric butterfly valves or electric gate valves.

[0011] Furthermore, the total flow meter and sub-flow meter are turbine flow meters, electromagnetic flow meters, ultrasonic flow meters or volumetric flow meters.

[0012] The beneficial effects of the utility model are:

[0013] The multi-mode water consumption control device of the utility model senses the rainfall situation through a rain sensor, can reasonably irrigate crops according to the weather, accurately detect and control the water consumption of public users through multiple sub-control valves and sub-flow meters, and monitor the water consumption of all users in the system through the main control valve and the total flow meter, thereby avoiding unnecessary waste, effectively saving water resources, and realizing multi-mode management and control for different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 This is a system schematic diagram of the utility model.

[0016] Reference numerals:

[0017] 1-PLC controller, 2-host computer, 3-human-machine interface, 4-rainfall sensor, 5-master control valve, 6-master flow meter, 7-sub-control valve, 8-sub-flow meter, 9-main pipeline, 10-sub-pipeline. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0020] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] like Figure 1 As shown, the multi-mode water consumption control device in this embodiment includes a PLC controller 1, a host computer 2, a human-machine interface 3, a rainfall sensor 4, a master control valve 5, a total flow meter 6, multiple sub-control valves 7 and multiple sub-flow meters 8. The host computer 2 and the human-machine interface 3 are connected to the PLC controller 1 through electrical signals. Among them, the PLC controller 1 can adopt SIMATIC S7-200, SIMATIC S7-300 or SIMATIC S7-1200 series controllers, the host computer 2 is a computer installed with a corresponding control program, and the human-machine interface 3 is an industrial touch screen capable of human-machine interaction. RS232 or RS485 serial communication is used between the PLC controller 1, the host computer 2 and the human-machine interface 3 to transmit signals and instructions. The host computer 2 is set in the control room to facilitate the staff to receive and issue instructions, view and analyze data, and perform fault warning operations; the PLC controller 1 and the human-machine interface 3 are set at the control site to facilitate the staff to set parameters, monitor the site conditions, alarm faults, and interact with the host computer 2.

[0022] The master control valve 5 and the total flow meter 6 are arranged on the main pipeline 9, and the main pipeline 9 is connected with multiple branch pipelines 10, and each branch pipeline 10 is provided with a sub-control valve 7 and a sub-flow meter 8. The rainfall sensor 4, the master control valve 5, the total flow meter 6, the multiple sub-control valves 7 and the sub-flow meter 8 are connected to the PLC controller 1 through electrical signals.

[0023] The rain sensor 4 can be a flow type rain sensor, an electrostatic rain sensor, a capacitive rain sensor or an infrared rain sensor commonly used in the art. Taking a capacitive rain sensor as an example, it generally includes four pins, wherein:

[0024] The AO (analog output) pin can provide an analog signal between 0V and 5V. This pin is connected to the analog I / O port of PLC controller 1.

[0025] The DO (digital output) pin gives the digital output of the internal comparator circuit and is connected to the digital I / O port of PLC controller 1;

[0026] The GND pin is the ground terminal, connected to the ground terminal of PLC controller 1;

[0027] The VCC pin is used to power the sensor. Generally, a voltage between 3.3V and 5V is used to power the sensor. This pin is connected to the control power supply terminal of the PLC controller 1.

[0028] The master control valve 5 and the sub-control valve 7 can adopt the electric ball valve, electric butterfly valve or electric gate valve commonly used in the art. Taking the electric butterfly valve as an example, it generally includes six control lines, among which:

[0029] There are three wires for opening and closing control: one for opening, one for closing, and one for common terminal; there are three wires for opening and closing: one for opening, one for closing, and one for common terminal. The opening and closing positions are passive contacts. When 4-20mA current is input to them, they will take corresponding actions, closing at 4mA and opening at 20mA. There is also a 4-20mA analog feedback signal to reflect the valve opening size.

[0030] The total flowmeter 6 and the sub-flowmeter 7 can adopt turbine flowmeters, electromagnetic flowmeters, ultrasonic flowmeters or volumetric flowmeters commonly used in the art. Taking the electromagnetic flowmeter as an example, it generally includes the following interfaces:

[0031] Power interface: divided into 24V-DC and 220V-AC, which can be connected to the corresponding DC or AC power supply terminal of PLC controller 1;

[0032] Upper and lower limit alarm interface: connected to the analog I / O port of PCL controller 1, used to transmit the flow signal (voltage or current signal) in the pipeline to PCL controller 1;

[0033] Communication interface: generally RS485, which can be connected to the corresponding port of PLC controller 1.

[0034] The branch pipes 10 are respectively connected to different users, such as car washes, bathhouses, restaurants, office buildings, etc. When these users reach a certain water consumption within a specified time, the corresponding sub-control valve 7 is controlled to be closed, thereby achieving the purpose of controlling water consumption and saving water; and the opening and closing time of the sub-control valve 7 can also be set according to customers with agricultural and forestry irrigation needs, avoiding the waste of water resources due to negligence and forgetfulness of personnel.

[0035] The signal from the rainfall sensor 4 is fed back to the PLC controller 1 to control the opening and closing of the sub-control valve 7 (especially for users of agricultural irrigation, green gardens, outdoor water replenishment facilities, etc.), so that these users can reduce their dependence on tap water resources according to the demand for natural water replenishment on rainy days, and can realize automatic water supply and water cut-off functions without human operation, thereby avoiding the danger of outdoor operation on rainy days or the waste of water resources due to omissions and forgetfulness.

[0036] In addition, the system sets the maximum instantaneous water volume of one or more fixed users as a control condition. When the actual instantaneous water volume exceeds 150% of the set volume, the PLC controller 1 issues an alarm and notifies the host computer 2 to pay attention to the alarm information. If the average instantaneous flow rate is still ≥150% after 5 minutes, the main control valve 5 or the sub-control valve 7 is closed, thereby achieving the purpose of controlling water consumption and saving water.

[0037] It should be noted that the various electrical components used in the present invention are all existing technologies in the field, and do not involve improvements to their structures or software. Those skilled in the art are aware of their structures and connection methods.

[0038] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the utility model.

Claims

1. A multi-mode water consumption control device, characterized in that: It includes a PLC controller, a rainfall sensor, a main control valve, a total flow meter, multiple sub-control valves and sub-flow meters, the main control valve and the total flow meter are arranged on a main pipeline, the main pipeline is connected to multiple sub-pipelines, each of the sub-pipelines is provided with a sub-control valve and a sub-flow meter, and the PLC controller is connected to the rainfall sensor, the main control valve, the total flow meter, the multiple sub-control valves and the sub-flow meters through electrical signals.

2. The multi-mode water consumption control device according to claim 1, characterized in that: It also includes a host computer, which is connected to the PLC controller through electrical signals.

3. The multi-mode water consumption control device according to claim 1, characterized in that: It also includes a human-machine interface, which is connected to the PLC controller through electrical signals.

4. The multi-mode water consumption control device according to claim 1, characterized in that: The PLC controller is a SIMATIC S7-200, SIMATIC S7-300 or SIMATIC S7-1200 series controller.

5. The multi-mode water consumption control device according to claim 1, characterized in that: The rain sensor is a flow type rain sensor, an electrostatic type rain sensor, a capacitive type rain sensor or an infrared type rain sensor.

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