Safe dosing system

Abstract

The utility model relates to the technical field, and discloses a safe dosing system which comprises an uninterruptible power supply connected with an upstream power supply, a battery pack connected with the uninterruptible power supply, and a short message alarm used for receiving abnormal signals of a control loop and sending alarm information to a control center, a circuit breaker for preventing short circuit or overload of a circuit is connected between the uninterruptible power supply and the short message alarm; a power-losing signal end of the dosing system, a fault signal end of the metering pump / stirring motor, a high signal end of the liquid level of the solution tank and a low signal end of the liquid level of the solution tank in the control loop are connected to the short message alarm through hard wiring. The device can avoid long-time interruption of dosing and influence on the quality of circulating water caused by power failure of a power supply and equipment failure under the unattended condition, is higher in reliability, has no over-high requirements on a processing technology, is shorter in production period and is more convenient to daily maintain.

Description

Technical Field

[0001] This utility model relates to the field of chemical dosing and defoaming technology in power plant water systems, specifically a safe chemical dosing system. Background Technology

[0002] Foam is a white or grayish-white mixture that floats on the water surface after chlorination and disinfection of a circulating water system. It is formed by the mixing, contact, coagulation, and flotation of air bubbles with marine organism carcasses, debris, and suspended matter in the seawater.

[0003] Because the power plant's defoaming dosing system needs to operate 24 hours a day, and because the system is unattended during nighttime operation, when the power supply to the defoaming dosing system fails, or the stirring motor, metering pump, or electric valve malfunctions, the metering pump, stirring motor, electric valve, etc. in the existing dosing system stop working for a long time, resulting in a large amount of white or grayish-white mixture appearing on the water surface, which seriously affects the secondary utilization of circulating water and impacts production progress.

[0004] Existing defoaming dosing systems can remotely control the dosing amount of the system by sending start / stop signals of the metering pump and the preset frequency value of the metering pump inverter via a mobile terminal. However, once the system power fails and the entire equipment stops, the staff cannot receive the status signals of the equipment when no one is on duty, and the fault persists, causing the dosing to be interrupted.

[0005] Therefore, we need to propose a safe dosing system to ensure long-term reliable operation and make daily maintenance more convenient. Utility Model Content

[0006] The purpose of this invention is to provide a safe dosing system that incorporates an uninterruptible power supply and an SMS alarm. Compared with existing dosing technologies, it can avoid long-term interruptions in dosing due to power failure and equipment malfunction when unattended, thus affecting the quality of circulating water. It is more reliable, has less stringent requirements for processing technology, a shorter production cycle, and is more convenient for daily maintenance, thereby solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a safe dosing system, including an uninterruptible power supply connected to an upstream power source, a battery pack connected to the uninterruptible power supply, and an SMS alarm device for receiving abnormal signals from the control circuit and sending alarm information to the control center. A circuit breaker to prevent short circuits or overloads is connected between the uninterruptible power supply and the SMS alarm device.

[0008] The power failure signal terminal of the dosing system, the fault signal terminal of the metering pump / stirring motor, the high liquid level signal terminal of the solution tank, and the low liquid level signal terminal of the solution tank in the control loop are connected to the SMS alarm via hard wiring. The uninterruptible power supply is equipped with a power switching module that can switch power supply modes.

[0009] Preferably, the uninterruptible power supply is provided with an external battery socket, and the battery pack is connected to the external battery socket via a cable.

[0010] Preferably, there are two circuit breakers, namely miniature circuit breaker one and miniature circuit breaker two. Pin 1 of miniature circuit breaker one and pin 1 of miniature circuit breaker two are both connected to the L2 interface of the uninterruptible power supply, and pin 3 of miniature circuit breaker one and pin 3 of miniature circuit breaker two are both connected to the N2 interface of the uninterruptible power supply.

[0011] Preferably, pin 2 of miniature circuit breaker one and pin 2 of miniature circuit breaker two are both connected to the power supply voltage interface of the SMS alarm device, and pin 4 of miniature circuit breaker one and pin 4 of miniature circuit breaker two are both connected to the grounding terminal of the SMS alarm device.

[0012] Preferably, the power failure signal terminal of the dosing system in the control loop is connected to the A1 signal terminal of the SMS alarm, the fault signal terminal of the metering pump / stirring motor in the control loop is connected to the A2 signal terminal of the SMS alarm, the high liquid level signal terminal of the solution tank in the control loop is connected to the A3 signal terminal of the SMS alarm, and the low liquid level signal terminal of the solution tank in the control loop is connected to the A4 signal terminal of the SMS alarm.

[0013] Preferably, the power switching module includes a power switching circuit, which includes a power management chip U10 and a transistor Q7. Pins 5 and 6 of the power management chip U10 are connected to the battery pack. Resistors R86 and R90 are connected to pin 4 of the power management chip U10, respectively. One end of resistor R86 is connected to a diode D19 that is connected to the power supply voltage. Resistors R89 and R91 are connected in series to pins 1 and 3 of the power management chip U10. Pin 2 of the power management chip U10 is connected to the terminals of resistors R89 and R91.

[0014] Preferably, one end of the resistor R91 is connected to the collector of the transistor Q7, and a diode D16 is also connected to the collector of the transistor Q7. One end of the diode D16 is connected to a resistor R83 and a diode D18, respectively. The base of the transistor Q7 is connected to a resistor R84 and a resistor R85, respectively. One end of the resistor R84 is connected to a diode D20, and a diode D17 and a diode D21 are connected between one end of the resistor R84 and pin 1 of the power management chip U10.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention incorporates an uninterruptible power supply and an SMS alarm. Compared with existing dosing technologies, it can avoid long-term interruptions in dosing due to power failure and equipment malfunction when unattended, thus affecting the quality of circulating water. It is more reliable, does not have high requirements for processing technology, has a shorter production cycle, and is more convenient for daily maintenance. Attached Figure Description

[0017] Figure 1 This is a system block diagram of the present invention;

[0018] Figure 2 This is a circuit diagram of the power switching circuit of this utility model.

[0019] In the diagram: 1. Uninterruptible power supply; 2. SMS alarm; 3. Miniature circuit breaker one; 4. Miniature circuit breaker two; 5. Battery pack. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-2 This utility model provides a technical solution: a safe dosing system, including an uninterruptible power supply 1 connected to an upstream power source, a battery pack 5 connected to the uninterruptible power supply 1, and a text message alarm 2 for receiving abnormal signals from the control circuit and sending alarm information to the control center. A circuit breaker to prevent short circuits or overloads is connected between the uninterruptible power supply 1 and the text message alarm 2.

[0022] The SMS alarm device 2 editing software allows users to edit SMS alarm content (power failure of the dosing system, metering pump / stirring motor failure, high solution tank level, low solution tank level) and designate recipients.

[0023] An uninterruptible power supply 1 with a battery pack 5 is used to provide power to a downstream SMS alarm device 2 with GPRS function. In the event of a power failure upstream, the SMS alarm device 2 is guaranteed to work normally and send SMS messages in a timely manner.

[0024] The power failure signal terminal of the dosing system, the fault signal terminal of the metering pump / stirring motor, the high liquid level signal terminal of the solution tank, and the low liquid level signal terminal of the solution tank in the control loop are connected to the SMS alarm 2 through hard wiring. The uninterruptible power supply 1 is equipped with a power switching module that can switch power supply modes.

[0025] This system utilizes an uninterruptible power supply to power the SMS alarm and control circuit, ensuring that in the event of upstream power failure or equipment malfunction, the SMS alarm will promptly and accurately send fault alarm SMS messages to staff, allowing staff to promptly arrive on-site to troubleshoot the problem. This ensures the long-term reliable operation of the dosing system and makes daily maintenance more convenient.

[0026] An external battery socket is provided on the uninterruptible power supply 1, and the battery pack 5 is connected to the external battery socket via a cable.

[0027] There are two circuit breakers, namely miniature circuit breaker 3 and miniature circuit breaker 4. Pin 1 of miniature circuit breaker 3 and pin 1 of miniature circuit breaker 4 are both connected to the L2 interface of uninterruptible power supply 1. Pin 3 of miniature circuit breaker 3 and pin 3 of miniature circuit breaker 4 are both connected to the N2 interface of uninterruptible power supply 1.

[0028] Pin 2 of miniature circuit breaker 3 and pin 2 of miniature circuit breaker 4 are both connected to the power supply voltage interface of SMS alarm device 2. Pin 4 of miniature circuit breaker 3 and pin 4 of miniature circuit breaker 4 are both connected to the grounding terminal of SMS alarm device 2.

[0029] The power failure signal terminal of the dosing system in the control loop is connected to the A1 signal terminal of SMS alarm 2; the fault signal terminal of the metering pump / stirring motor in the control loop is connected to the A2 signal terminal of SMS alarm 2; the high liquid level signal terminal of the solution tank in the control loop is connected to the A3 signal terminal of SMS alarm 2; and the low liquid level signal terminal of the solution tank in the control loop is connected to the A4 signal terminal of SMS alarm 2.

[0030] The power switching module includes a power switching circuit, which includes a power management chip U10 and a transistor Q7. Pins 5 and 6 of the power management chip U10 are connected to the battery pack 5. Resistors R86 and R90 are connected to pin 4 of the power management chip U10, respectively. One end of resistor R86 is connected to diode D19, which is connected to the power supply voltage. Resistors R89 and R91 are connected in series to pins 1 and 3 of the power management chip U10. Pin 2 of the power management chip U10 is connected to the terminals of resistors R89 and R91.

[0031] One end of resistor R91 is connected to the collector of transistor Q7. Diode D16 is also connected to the collector of transistor Q7. One end of diode D16 is connected to resistor R83 and diode D18. The base of transistor Q7 is connected to resistor R84 and resistor R85. One end of resistor R84 is connected to diode D20. Diodes D17 and D21 are connected between one end of resistor R84 and pin 1 of power management chip U10.

[0032] When the dosing system is running normally, the uninterruptible power supply 1 automatically switches to mains power mode, and the downstream power is provided by the mains power. At the same time, the battery of the uninterruptible power supply 1 is charged and automatically stops when fully charged.

[0033] When the dosing system loses power / metering pump malfunctions / stirring motor malfunctions / solution tank high level alarm / solution tank low level alarm, SMS alarm 2 will activate and send an alarm signal. After receiving the SMS, staff will arrive at the site to troubleshoot the problem.

[0034] Uninterruptible power supply 1 (UPS), SMS alarm 2, and control circuit are installed downstream of UPS 1. UPS 1 is a long-life UPS, i.e., UPS with external battery pack 5. When the upstream power supply is normal, UPS 1 operates in mains power mode. The bypass power indicator and mains power indicator of UPS 1 are lit, and the external battery pack 5 is charged for standby. It automatically stops when fully charged. At this time, the downstream equipment, including SMS alarm 2 and control circuit, is powered by mains power.

[0035] In the event of an upstream power outage, the uninterruptible power supply 1 automatically switches to battery mode, and the battery indicator and inverter indicator of the uninterruptible power supply 1 light up. At this time, the power supply for all downstream equipment, including the SMS alarm device 2, is provided by the external battery pack 5. When the control circuit triggers alarms such as power failure of the dosing system, metering pump / stirring motor failure, high solution tank level, or low solution tank level, the SMS alarm device 2 sends an alarm signal to the designated operator so that the operator can go to the site in time to confirm the cause of the fault and resolve the fault.

[0036] This system incorporates an uninterruptible power supply and an SMS alarm. Compared to existing dosing technologies, it can avoid prolonged interruptions in dosing due to power failure or equipment malfunction when unattended, thus preventing impact on the quality of circulating water. It offers higher reliability, does not have overly demanding requirements on the processing technology, has a shorter production cycle, and is more convenient for daily maintenance.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safe dosing system, characterized in that: It includes an uninterruptible power supply (1) connected to an upstream power source, a battery pack (5) connected to the uninterruptible power supply (1), and a text message alarm (2) for receiving abnormal signals from the control circuit and sending alarm information to the control center. A circuit breaker to prevent short circuits or overloads is connected between the uninterruptible power supply (1) and the text message alarm (2). The power failure signal terminal of the dosing system, the fault signal terminal of the metering pump / stirring motor, the high liquid level signal terminal of the solution tank, and the low liquid level signal terminal of the solution tank in the control loop are connected to the SMS alarm (2) through hard wiring. The uninterruptible power supply (1) is equipped with a power switching module that can switch power supply modes.

2. The safe dosing system according to claim 1, characterized in that: The uninterruptible power supply (1) is equipped with an external battery socket, and the battery pack (5) is connected to the external battery socket via a cable.

3. The safe dosing system according to claim 1, characterized in that: There are two circuit breakers, namely miniature circuit breaker one (3) and miniature circuit breaker two (4). Pin 1 of miniature circuit breaker one (3) and pin 1 of miniature circuit breaker two (4) are connected to the L2 interface of the uninterruptible power supply (1). Pin 3 of miniature circuit breaker one (3) and pin 3 of miniature circuit breaker two (4) are connected to the N2 interface of the uninterruptible power supply (1).

4. The safe dosing system according to claim 3, characterized in that: Pin 2 of the miniature circuit breaker one (3) and pin 2 of the miniature circuit breaker two (4) are both connected to the power supply voltage interface of the SMS alarm device (2), and pin 4 of the miniature circuit breaker one (3) and pin 4 of the miniature circuit breaker two (4) are both connected to the grounding terminal of the SMS alarm device (2).

5. A safe dosing system according to claim 1, characterized in that: The power failure signal terminal of the dosing system in the control loop is connected to the A1 signal terminal of the SMS alarm (2), the fault signal terminal of the metering pump / stirring motor in the control loop is connected to the A2 signal terminal of the SMS alarm (2), the high liquid level signal terminal of the solution tank in the control loop is connected to the A3 signal terminal of the SMS alarm (2), and the low liquid level signal terminal of the solution tank in the control loop is connected to the A4 signal terminal of the SMS alarm (2).

6. A safe dosing system according to claim 1, characterized in that: The power switching module includes a power switching circuit, which includes a power management chip U10 and a transistor Q7. Pins 5 and 6 of the power management chip U10 are connected to the battery pack (5). Pin 4 of the power management chip U10 is connected to resistors R86 and R90 respectively. One end of resistor R86 is connected to diode D19, which is connected to the power supply voltage. Pins 1 and 3 of the power management chip U10 are connected in series with resistors R89 and R91. Pin 2 of the power management chip U10 is connected to the terminals of resistors R89 and R91.

7. A safe dosing system according to claim 6, characterized in that: One end of resistor R91 is connected to the collector of transistor Q7. Diode D16 is also connected to the collector of transistor Q7. One end of diode D16 is connected to resistor R83 and diode D18. The base of transistor Q7 is connected to resistor R84 and resistor R85. One end of resistor R84 is connected to diode D20. Diodes D17 and D21 are connected between one end of resistor R84 and pin 1 of power management chip U10.

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