Marine foam fire extinguishing controller

Abstract

According to the marine foam fire extinguishing controller, signals are input to the CPU for processing through the key switch so as to directly output the signals to the relay coil of the output unit of the box body, and the normally-open-to-normally-closed output unit relay contacts are connected with a power supply so as to control the opening and closing of at most eight electric valves, so that the purpose of spraying foam is achieved. The opening and closing interval time of the electrically operated valve can be controlled by the CPU unit, and the working voltage types of the controllable electrically operated valve are four DC24V and four AC220V, so that the controllable electrically operated valve can be flexibly matched with various foam mixing proportion devices. The single-chip microcomputer is adopted to control signal processing, and the case, internal hardware and chips are all made in China and can be well suitable for broad markets.

Description

Technical Field

[0001] The invention relates to a ship foam fire extinguishing controller, and belongs to the field of ship fire fighting control. Background Art

[0002] Today's technology is developing day by day, and intelligent science and technology will be integrated into all walks of life to improve convenience. Foam fire extinguishing is odorless, dust-free and other residues during the fire extinguishing process, which will not cause secondary pollution to the environment and will not damage the ozone layer in the atmosphere; at the same time, it is non-toxic and can reduce the smoke content on site, which is conducive to the evacuation of personnel. Foam fire extinguishing is an indispensable fire extinguishing measure on board, and the foam fire extinguishing controller is a necessary fire extinguishing equipment on board.

[0003] The valve on the original traditional foam fire extinguisher tank needs the operator to hold a hexagonal wrench to turn it open, which is inefficient and time-consuming. After a fire occurs, the process of opening the foam equipment for fire extinguishing takes several minutes. If a fire occurs at sea, the only option is self-rescue. The long fire extinguishing time means a greater threat to life. Therefore, the present invention can start the electric valve in the fire extinguishing area on the foam tank with one button, and quickly extinguish the fire in the fire extinguishing area. The entire foam spraying process does not exceed 20 seconds, and the operation is simple. Summary of the invention

[0004] The invention changes the slow fire-fighting cycle of the traditional manual mode and proposes a novel foam fire-fighting controller for ships.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a marine foam fire extinguishing controller, which can configure button functions according to the actual factory opening and closing time of the electric valve and the fire extinguishing process on site, so as to achieve one-button start of foam spraying fire extinguishing.

[0006] The foam fire extinguishing controller realized by the present invention is composed of a power conversion unit, a CPU power supply, an input unit, an output unit and a display unit, and each unit is connected by a wire.

[0007] The purpose of the present invention is achieved in this way: the power conversion unit converts AC power into DC power to supply power to the CPU unit and the output unit, the CPU unit receives the input unit signal and processes it, and the status is displayed by the display unit. The CPU unit also outputs the signal to the output unit, controls the DC relay coil of the output unit, and connects the power supply of the electric valve through the contact of the relay, so as to achieve the one-key start function. Further, the fault of the electric valve of the display unit is set by the electric valve produced by the manufacturer to set the opening and closing time, and the power supply time is configured by the CPU unit. If the configured time is exceeded, the fault is determined and the display unit displays the fault state, which is convenient for maintenance and analysis of the cause of the fault. The different buttons of the input unit can be divided into different functions, and the corresponding number of valves can be configured by one-key start according to the area. The number and opening and closing process of the electric valve are determined and analyzed by the designer according to the requirements of the foam tank body, and the corresponding process is configured to implement fire extinguishing. The input unit covers the feedback information of the sensor signal and the start and stop of the electric valve. The requirements of the fire extinguishing electric valve process can be freely configured, and then the software download program is designed.

[0008] Beneficial Effects Compared with the prior art, the present invention has the following advantages.

[0009] 1) The display unit can display the status information of the electric valve in real time, which can better judge and analyze the faults and improve the maintainability of the system.

[0010] 2) One-button start input unit enables foam fire extinguishing spraying in the fastest and most convenient way.

[0011] 3) According to the number of electric valves that can be configured for different tanks, the interval time of the electric valves required for water inlet, foam squeezing and liquid discharge for fire extinguishing can be configured through the CPU unit, which improves the flexible matching of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0013] Figure 1 This is a composition diagram of a marine foam fire extinguishing controller implemented by the present invention. Figure 2 Design and application diagram of a foam tank mounted on a ship-used foam fire extinguishing controller implemented by the present invention. DETAILED DESCRIPTION

[0014] The following is a detailed description of the technical features, functions and effects of the present invention for better understanding.

[0015] See also Figure 1First, configure the number and address of input units, output units, and display units through the host computer configuration software, configure the relay action logic of the output unit according to the required electric valve, configure the status information of the display unit and the interface definition of the input unit, combine these configuration information according to the logical functions required, and download them to the CPU unit through the USB cable.

[0016] Input the external AC 220V power supply to the controller power interface, and the power conversion unit will convert the AC220V into a DC 24V power supply to supply the CPU unit, output unit, and display unit. A part of the AC power will also be distributed to the output unit relay contacts to power the AC 220V electric valve.

[0017] The key switch and sensor signals are connected to the input unit, the input signal is transmitted to the CPU unit for logic processing, and the output signal is sent to the output unit relay for action and the display unit for status display.

[0018] Work Application See also Figure 2 , designed and applied to the system of marine foam fire extinguishing control equipped with foam tanks, equipped with 2 foam fire extinguishing areas, 2 AC 220V electric valves and 2 DC 24V electric valves are respectively configured on 2 pipelines. After the one-button start is pressed, 1# electric valve, 2# electric valve and 4# electric valve are started at the same time, and the pressure water will enter the tank through 2# electric valve to squeeze the tank capsule. After an interval of 10 seconds, 3# electric valve will be opened, and the squeezed foam liquid and water will be mixed into a certain proportion of foam liquid for fire extinguishing. When the fire extinguishing is over, press the corresponding stop button, and the 4 electric valves will be closed at the same time to complete a foam fire extinguishing process.

[0019] The foam tank is equipped with sensor detection. The sensor is connected to the controller. The detection signal is transmitted to the CPU unit for processing through the input unit, and the output signal is sent to the display unit for status display, so that the operator can know the foam fire extinguishing situation in real time.

[0020] In addition, this specification only clearly describes one implementation scheme, and those skilled in the art can configure other implementation schemes and configure multiple independent schemes.

Claims

1. A marine foam fire extinguishing controller, characterized in that: The power conversion unit is used to convert the power input into DC, and the CPU unit and output unit are used for AC / DC control, and the output is used to supply power to electric valves of different voltages, and the status information of the electric valves can be monitored at the same time. The number and opening and closing of the electric valves can be configured by the CPU unit. After the input unit inputs the signal to the CPU unit for configuration information pairing, the output unit is controlled to output the relevant configuration information.

2. A marine foam fire extinguishing controller according to claim 1, characterized in that: The display unit is a status display, which can simply and effectively provide real-time feedback on the status information of the electric valve.

3. A marine foam fire extinguishing controller according to claim 1, characterized in that: The output unit relay action is directly controlled by the CPU unit, so that the opening or closing action of the electric valve is directly controlled by the CPU unit. The information download of the number of electric valves and the linkage time of the electric valves can be configured according to the needs of the site.

4. A marine foam fire extinguishing controller according to claim 1, characterized in that: The controller is provided with a power failure that does not affect the current state of the electric valve. When the power is cut off during normal foam spraying, the state of the valve is not affected by the power failure and can continue to maintain the state before the power failure.

5. A marine foam fire extinguishing controller according to claim 1, characterized in that: When foam fire extinguishing is required in an area, just press the input unit button switch of the corresponding area to control the electric valve to open normally, and the foam spraying effect can be achieved.

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