RU206752U1 - WATER LEAK DETECTOR - Google Patents

Abstract

The utility model refers to devices used in various fields of industry and can be used in industrial and domestic premises to signal about water leakage and the beginning of flooding. and household premises. The technical result is to expand the functionality of the device. The problem is solved, and the technical result is achieved by developing a device consisting of a connected contact plate and an executive module with an electronic circuit that controls the activation of the speaker and an LED; a relay that provides an alarm output to an external device; there is a power supply control LED and a button for simulating the actuation of a water leakage sensor.

Description

The utility model relates to devices used in various fields of industry and can be used in industrial and domestic premises to signal about water leakage and the beginning of flooding.

Known signaling device for the leakage of an electrically conductive liquid (USSR patent No. 909672 A1, IPC G08B 19/00, 01.01.2006). The disadvantages of this device are

lack of audible alarm;

the inability to output the alarm to an external executive / receiving and control device (controller, equipment with the functionality of monitoring external alarms from housekeeping alarm sensors ", etc.) to ensure the possibility of transmitting alarms over long distances and tracking its appearance in single dispatch centers and integration of the signaling device into centralized monitoring and control systems.

Known sensor for monitoring water leaks (RF patent No. 72859 U1, IPC A62C 39/00, 01.01.2006).

The disadvantages of this device are

the complexity of the design of the water sensor and the need to dry it after triggering;

the need to use an external factory-made receiving-contact device (the executive device is not provided for by this patent).

Closest to the claimed device is a device for detecting water leaks (RF patent No. 137371 U1, IPC G01F 23/30, 01.01.2006).

The disadvantages of this device are

- the need to dry or replace the sensor after triggering;

the complexity of the design of the actuator due to the need to manufacture (purchase) a separate signal generator;

lack of light emergency indication;

the inability to output the alarm to an external executive / receiving and control device (controller, equipment with the functionality of monitoring external alarms from housekeeping alarm sensors ", etc.) to ensure the possibility of transmitting alarms over long distances and tracking its appearance in single dispatch centers and integration of the signaling device into centralized monitoring and control systems.

The task of the utility model is to expand the arsenal of technical means used to ensure continuous monitoring and detection of water leaks in industrial and household premises.

The technical result is to expand the functionality of the device.

The problem is solved, and the technical result is achieved by developing a device consisting of a connected contact plate and an executive module with an electronic circuit that controls the activation of the speaker and an LED; a relay that provides an alarm output to an external device; there is a power supply control LED and a button for simulating the actuation of a water leakage sensor.

The claimed device consists of two components: a contact plate (of two isolated electrodes) and an executive module with a power source (external - power supply unit or built-in - battery), which are connected by means of a shielded cable or twisted pair cable (to reduce the probability of false alarms with possible parasitic voltage pickups on the cable). The contact plate is installed on the floor in a production or utility room. The contact plate detects the appearance of water at the point of its placement due to a change in the resistance between the electrodes as a result of closing them with water, as a result of which an electronic circuit installed in its own executive module is triggered, which activates a sound signal and light indication, as well as by triggering a sensor of the "dry contact" type »Provides an alarm output to an external executive / receiving-control device.

The electrical schematic diagram of the executive module of the water leakage detector is shown in figure 1.

The executive module (1) of the water leakage detector consists of a housing in which an electrical circuit is located, consisting of a low voltage power supply (15), the output voltage of which is fed through the limiting resistors (2) and (17) to the contact plate (8), consisting of two electrodes isolated from each other. When in contact with water between the electrodes, due to the electrical conductivity of water (liquid), an electrical circuit appears (resistance changes). The current from the positive electrode of the contact plate (8) is fed to the base of transistors (12) and (18) through limiting resistors (11) and (17), which reduce the current to reduce corrosion of the contact plate (8) and reduce the base current of the transistors (12) and (18). The transistor (12) opens and turns on the speaker (5) and the LED (3), which, with a sound and light signal, notify the maintenance personnel about the leakage of water (liquid) and the beginning of flooding. A current-limiting resistor (4) is installed in the LED circuit (3). Bias resistors (16) and (19) close the transistors (12) and (18) in the absence of voltage at the bases of the transistors. In parallel, the relay switching circuit (13) - transistor (18) is triggered, opens and closes the power circuit of the relay coil (13), which, with its normally open contact (20), provides an alarm output to an external executive / receiving-control device (controller, equipment with functionality for monitoring external alarms from housekeeping alarm sensors ", etc.) to ensure the possibility of transmitting alarms over long distances and tracking its appearance in single dispatching centers and integrating a water leakage detector into centralized monitoring and control systems. The diode (6) is installed in the supply circuit of the relay coil (13) to exclude the self-induction pulse. Additionally, to control the presence of power, an LED (7) with a current-limiting resistor (14) is installed. To be able to check the operability of the executive module, a button (9) with a capacitor (10) is installed in parallel to the contact plate in the module, which, when pressed, simulates the operation of the sensor (closure of the electrodes of the contact plate) of water (liquid) leakage.

The advantages of the developed utility model are

the presence of a light alarm;

the ability to output an alarm to external devices;

the ability to check the performance of the executive module;

the presence of a power supply control LED.

The claimed essential distinguishing features are unknown to us from patent and scientific and technical information and, accordingly, are "New".

An electrical schematic diagram was developed for the claimed device and a prototype was manufactured, which was successfully tested in the water-cable shaft of the basement at the branch of OOO Gazprom transgaz Ukhta. In this regard, the device declared by us meets the criterion "Industrial applicability".

Claims (1)

A water leakage detector, consisting of a connected contact plate and an executive module with an electronic circuit that controls the activation of the speaker and an LED; a relay that provides an alarm output to an external device; there is a power supply control LED and a button for simulating the actuation of a water leakage sensor.

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