Automatic alarm system for water supply plant medicament adding

Abstract

The utility model relates to the technical field of waterworks automatic control, in particular to an automatic alarm system for waterworks chemical dosing, which comprises a chemical dosing unit, a water quality detection unit and an automatic alarm control box, and data of the chemical dosing unit and the water quality detection unit are transmitted to a waterworks main PLC (programmable logic controller) through a network. The water plant main PLC controller controls the automatic alarm control box to give an alarm or not to give an alarm according to the data or the fault data of the water plant main PLC controller; the dosing unit comprises a mounting frame, medicine barrels, dosing pumps and a pressure gauge, the mounting frame is provided with a base, a protective box is arranged on the base, a plurality of partition plates are arranged on the protective box to form compartments for placing the medicine barrels, a mounting cross beam is arranged on the upper portion of the mounting frame, the dosing pumps are arranged on the mounting cross beam corresponding to the medicine barrels, and the dosing pumps are connected with the corresponding medicine barrels through pipelines; a pressure gauge is mounted on the pipeline, and a wireless sensor is mounted on the dosing pump. The device can be used for pre-preventing the conditions of equipment tripping, water quality sudden change and the like, so that the safety and the stability of medicament feeding of waterworks are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic control of water plants, in particular to an automatic alarm system for adding reagents in water plants. Background Art

[0002] The equipment in the water plant is characterized by many types, large numbers, and complex installation environments. Each production link is relatively independent and closely linked to each other. In terms of reagent addition, any error in water quality parameters or equipment operation failure in any link will have a greater impact, and ultimately lead to changes in the quality of the water leaving the factory. Therefore, in order to prevent the on-duty staff from not discovering the fault information in time, and to better ensure water quality safety and improve production efficiency, it is necessary to strengthen the safety monitoring and early warning of each link in the production process of the water plant, and improve the control ability of water supply safety automation. On this basis, electrical automation technology and computer network technology composed of industrial computers and programmable controllers have been widely used in the production and management of large and medium-sized water plants to ensure that the entire water plant can operate in a coordinated and orderly manner. At present, for situations such as equipment tripping or sudden changes in water quality, maintenance personnel are not clear about the causes of these failures, which will bring inconvenience to maintenance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an automatic alarm system for adding reagents to a water plant, so as to pre-empt equipment tripping, sudden changes in water quality, etc., and ensure the safety and stability of the addition of reagents to the water plant.

[0004] The technical solution adopted by the utility model to solve its technical problems is: an automatic alarm system for adding medicine to a water plant, comprising a dosing unit, a water quality detection unit and an automatic alarm control box, the data of the dosing unit and the water quality detection unit are transmitted to the main PLC controller of the water plant through a network, and the main PLC controller of the water plant controls the automatic alarm control box to alarm or not alarm according to the above data or its own fault data; the dosing unit comprises a mounting frame, a medicine cartridge, a dosing pump and a pressure gauge, the mounting frame has a base, a protective box is provided on the base, the protective box is provided with a plurality of partitions to form a compartment for placing the medicine cartridge, the upper part of the mounting frame has a mounting crossbeam, a dosing pump is provided on the mounting crossbeam corresponding to each medicine cartridge, the dosing pump is connected to the corresponding medicine cartridge through a pipeline, a pressure gauge is installed on the pipeline, and a wireless sensor is installed on the dosing pump.

[0005] Furthermore, the water quality detection unit includes a test bench, a water tank and pipelines. Three water tanks are arranged under the test bench. PH probes, residual chlorine probes and turbidity probes are respectively arranged in the three water tanks. A sampling pump, a display screen and a controller are installed on the surface of the test bench. The sampling pump and the display screen are electrically connected to the controller, and the controller is wirelessly connected to the main PLC controller of the water plant.

[0006] Furthermore, the pipeline includes a horizontal pipe and a first vertical pipe, a second vertical pipe and a third vertical pipe connected to the horizontal pipe, the first vertical pipe, the second vertical pipe and the third vertical pipe respectively extend into three water tanks, the sampling pump is installed on the first vertical pipe, the first vertical pipe and the third vertical pipe are respectively connected to the two ends of the horizontal pipe, and the second vertical pipe is connected to the middle of the horizontal pipe.

[0007] Furthermore, the automatic alarm control box includes a control module, an operation module and an alarm module. The control module has a PLC controller, a relay and a power supply. The PLC controller adopts Micrologix 1100. The relay is connected to the lead wire of a pin of the PLC controller. The power supply is a 24V DC power supply, whose negative pole is connected to the COM interface, and whose positive pole is connected to another pin of the PLC controller through a wire.

[0008] Furthermore, the operating module includes a touch screen and an emergency stop button, the emergency stop button is connected to the connecting wire between the power supply and the PLC controller, and the touch screen is installed on the outer surface of the automatic alarm control box and is electrically connected to the PLC controller.

[0009] Furthermore, the alarm module is an audible and visual alarm, which is connected in series with an emergency stop button and in parallel with a PLC controller.

[0010] The beneficial effects of the utility model are:

[0011] (1) The utility model is connected to the main PLC controller of the water plant through the network. When the system detects that the network connection is disconnected, an audible and visual alarm will be sounded immediately, and the cause of the fault will be displayed on the touch screen;

[0012] (2) The utility model reads the operation signal of the dosing unit through the network and can display the operation status of each dosing pump on the touch screen; when the equipment fails or trips, an audible and visual alarm will be given immediately, and the tripping equipment information and the cause of the failure will be displayed on the touch screen;

[0013] (3) When the industrial computer of the main PLC controller of the water plant fails, an alarm will be generated immediately, and the cause of the failure will be displayed on the touch screen;

[0014] (4) When important water quality parameters such as pH value, turbidity, residual chlorine, etc. of the factory water do not meet the standards, an alarm will be generated and the cause of the fault will be displayed on the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the medicine adding unit in the utility model.

[0018] Figure 3 It is a structural schematic diagram of the water quality detection unit in the utility model.

[0019] Figure 4 It is a structural schematic diagram of the automatic alarm box in the utility model.

[0020] Figure 5 yes Figure 4 Wiring diagram.

[0021] Figure 6 yes Figure 4 Schematic diagram of the control module.

[0022] In the figure: 1. dosing unit, 11. mounting frame, 111. base, 112. protection box, 113. mounting beam, 12. cartridge, 13. dosing pump, 14. pressure gauge, 15. pipeline, 16. wireless sensor, 2. water quality detection unit, 20. pipeline, 201. horizontal pipe, 202. first vertical pipe, 203. second vertical pipe, 204. third vertical pipe, 21. test bench, 22. water tank, 23. sampling pump, 24. display screen, 25. controller, 3. automatic alarm control box, 31. PLC controller, 32. relay, 33. touch screen, 34 emergency stop button, 4. main PLC controller of water plant. DETAILED DESCRIPTION

[0023] The present invention is now further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] like Figure 1 As shown, an automatic alarm system for adding chemicals to a water plant includes a dosing unit 1, a water quality detection unit 2 and an automatic alarm control box 3. The data of the dosing unit 1 and the water quality detection unit 2 are transmitted to the water plant main PLC controller 4 through the network. The water plant main PLC controller 4 controls the automatic alarm control box 3 to alarm or not according to the above data or its own fault data.

[0025] like Figure 2As shown, the dosing unit 1 includes a mounting frame 11, a cartridge 12, a dosing pump 13 and a pressure gauge 14. The mounting frame 11 has a base 111, a protective box 112 is provided on the base 111, and a plurality of partitions are provided in the protective box 112 to form a compartment for placing the cartridge 12 (the present embodiment shows a structure of four cartridges 12 (adding alum and sodium hypochlorite)). The upper part of the mounting frame 11 has a mounting crossbeam 113, and a dosing pump 13 is provided on the mounting crossbeam 113 corresponding to each cartridge 12. The dosing pump 13 is connected to the corresponding cartridge 12 through a pipe 15, and a pressure gauge 14 is installed on the pipe 15. A wireless sensor 16 is installed on the dosing pump 13. The wireless sensor 16 detects parameters such as flow, pressure and temperature of the dosing pump 13, and transmits these parameter data to the main PLC controller 4 of the water plant through a wireless network. The main PLC controller 4 of the water plant analyzes and processes the data, determines whether the dosing pump 13 is abnormal, and performs early warning and maintenance.

[0026] like Figure 3 As shown, the water quality detection unit 2 includes a test bench 21, a water tank 22 and a pipeline 20. Three water tanks 22 are arranged below the test bench 21. The three water tanks 22 are respectively provided with a pH probe, a residual chlorine probe and a turbidity probe (not shown in the figure). A sampling pump 23, a display screen 24 and a controller 25 are installed on the surface of the test bench 21. The sampling pump 23 and the display screen 24 are both electrically connected to the controller 25. The controller 25 is wirelessly connected to the main PLC controller 4 of the water plant. Among them, the pipeline 20 includes a horizontal pipe 201 and a first vertical pipe 202, a second vertical pipe 203 and a third vertical pipe 204 connected to the horizontal pipe 201. The first vertical pipe 202, the second vertical pipe 203 and the third vertical pipe 204 extend into the three water tanks 22 respectively. The sampling pump 23 is installed on the first vertical pipe 202. The first vertical pipe 202 and the third vertical pipe 204 are respectively connected to the two ends of the horizontal pipe 201, and the second vertical pipe 203 is connected to the middle of the horizontal pipe 201.

[0027] The pH value, residual chlorine, turbidity and other corresponding indicators of the three water tanks 22 are detected by the pH probe, residual chlorine probe and turbidity probe, and the detected values ​​are sent to the main PLC controller 4 of the water plant. The main PLC controller 4 of the water plant analyzes and processes the data to determine whether the water quality parameters meet the standards, and makes early warnings and adjustments in advance. The controller 25 is used to control the sampling pump 23, and the display screen 24 is used to display the data of each probe.

[0028] like Figures 4 to 6As shown, the automatic alarm control box 3 includes a control module, an operation module and an alarm module. The control module has a PLC controller 31, a relay 32 and a power supply. The PLC controller 31 adopts Micrologix 1100. The relay 32 is connected to the lead-out wire of a pin of the PLC controller 31. The power supply is a 24V DC power supply, the negative pole of which is connected to the COM interface, and the positive pole of which is connected to another pin of the PLC controller 31 through a wire. The operation module includes a touch screen 33 and an emergency stop button 34. The emergency stop button 34 is connected to the connecting wire between the power supply and the PLC controller 31. The touch screen 33 is installed on the outer surface of the automatic alarm control box 3 and is electrically connected to the PLC controller 31. Among them, the alarm module is an audible and visual alarm 35, which is connected in series with the emergency stop button 34 and in parallel with the PLC controller 31.

[0029] When the system of this embodiment detects that the network connection is disconnected, it will immediately sound and light alarm, and the cause of the fault will be displayed on the touch screen 33; by reading the operating signal of the dosing unit 1 through the network, the operating status of each dosing pump 13 can be displayed on the touch screen 33; when the equipment fails or trips, it will immediately sound and light alarm, and the tripping equipment information and the cause of the fault will be displayed on the touch screen 33; when the industrial computer of the main PLC main controller 4 of the water plant fails, an alarm will be immediately generated, and the cause of the fault will be displayed on the touch screen 33; when important water quality parameters such as turbidity and residual chlorine (turbidity>0.2NTU, residual chlorine>0.88mg / L or residual chlorine<0.62mg / L, PH<7.0 or PH>7.3) of the factory water do not meet the standards, an alarm will be generated, and the cause of the fault will be displayed on the touch screen 33.

[0030] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An automatic alarm system for adding reagents to a water plant, characterized by: It includes a dosing unit, a water quality detection unit and an automatic alarm control box. The data of the dosing unit and the water quality detection unit are transmitted to the main PLC controller of the water plant through the network. The main PLC controller of the water plant controls the automatic alarm control box to alarm or not according to the above data or its own fault data; the dosing unit includes a mounting frame, a cartridge, a dosing pump and a pressure gauge. The mounting frame has a base, a protective box is provided on the base, and a plurality of partitions are provided on the protective box to form a compartment for placing the cartridge. The upper part of the mounting frame has a mounting crossbeam, and a dosing pump is provided on the mounting crossbeam corresponding to each cartridge. The dosing pump is connected to the corresponding cartridge through a pipeline, a pressure gauge is installed on the pipeline, and a wireless sensor is installed on the dosing pump.

2. The automatic alarm system for adding reagents to a waterworks according to claim 1, characterized in that: The water quality detection unit includes a test bench, a water tank and a pipeline. Three water tanks are arranged under the test bench. PH probes, residual chlorine probes and turbidity probes are respectively arranged in the three water tanks. A sampling pump, a display screen and a controller are installed on the surface of the test bench. The sampling pump and the display screen are electrically connected to the controller, and the controller is wirelessly connected to the main PLC controller of the water plant.

3. The automatic alarm system for adding reagents to a waterworks according to claim 2 is characterized in that: The pipeline includes a horizontal pipe and a first vertical pipe, a second vertical pipe and a third vertical pipe connected to the horizontal pipe. The first vertical pipe, the second vertical pipe and the third vertical pipe extend into three water tanks respectively. The sampling pump is installed on the first vertical pipe. The first vertical pipe and the third vertical pipe are respectively connected to the two ends of the horizontal pipe, and the second vertical pipe is connected to the middle of the horizontal pipe.

4. The automatic alarm system for adding reagents to a waterworks according to claim 1, characterized in that: The automatic alarm control box includes a control module, an operation module and an alarm module. The control module has a PLC controller, a relay and a power supply. The PLC controller adopts Micrologix 1100. The relay is connected to the lead wire of a pin of the PLC controller. The power supply is a 24V DC power supply, the negative pole of which is connected to the COM interface, and the positive pole of which is connected to another pin of the PLC controller through a wire.

5. The automatic alarm system for adding reagents to a waterworks according to claim 4 is characterized in that: The operating module includes a touch screen and an emergency stop button, wherein the emergency stop button is connected to a connecting wire between a power source and a PLC controller, and the touch screen is installed on an outer surface of an automatic alarm control box and is electrically connected to the PLC controller.

6. The automatic alarm system for adding reagents to a waterworks according to claim 5, characterized in that: The alarm module is an audible and visual alarm, which is connected in series with the emergency stop button and in parallel with the PLC controller.

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