RU85718U1 - AUTOMATIC GAS CONTROL SYSTEM - Google Patents

Abstract

1. An automatic gas control system containing at least two gas detectors, a gas shut-off valve with electromagnetic control, an alarm and control unit and a control room, while a control room and all gas warning devices are connected to the signal and control unit via a radio channel, and the gas shut-off valve is connected to the signaling and control unit via a wired communication line. ! 2. The system according to claim 1, characterized in that it contains additional gas shutoff valves connected via a wired communication line to the gas detectors. ! 3. The system according to claim 1, characterized in that the gas detector contains a power supply and a microcontroller connected to the power supply, a gas pollution sensor, a light and sound alarm module, a radio channel information exchange module, a shut-off valve control module, a gas pollution detector network address selection module while the microcontroller is connected to a gas pollution sensor, a light and sound indication module, a radio channel information exchange module, a valve control module and a shut-off module selection of the network address of the gas detector. ! 4. The system according to claim 1, characterized in that the signaling and control unit comprises a power unit and a microcontroller, a keyboard, a display, an information exchange module via a radio channel, an information receiving and output module, a network address selection module of an alarm and control unit connected to the power supply unit , while the microcontroller is connected to a keyboard, display, information exchange module

Description

The utility model relates to alarm systems with sound or light signals in the presence of smoke or gases, and in particular to systems that perform continuous automatic monitoring of the level of methane and carbon monoxide in the air and block the gas supply pipeline in the event of an emergency.

A gas contamination control device is known, consisting of a gas contamination detector, electrically connected to an electromagnetic valve. The gas detector according to the electrical connection diagram of the device elements contains a gas sensor, a comparator, a voltage multiplier, a key, a power supply with a common negative conductor. The electromagnetic valve includes a locking device and an electromagnet coil with an anchor. The key is connected with one terminal to a voltage multiplier, and the second to a solenoid valve coil connected to a common negative conductor (see Utility Model Patent RU No. 37251, IPC G08B 17/10, publ. 2004.04.10).

A device of known design provides the ability to reduce the operating voltage on the valve, which generally leads to increased durability of the device, however, the known device monitors in a limited space and provides only the overlap of the electromagnetic valve and does not produce a warning signal.

A gas contamination monitoring device is known, consisting of a base and additional gas detectors, electrically connected to an electromagnetic valve, which contains a locking device and an electromagnet coil with an armature. Gas detectors contain a measuring bridge with a thermocatalytic sensor, a comparator, electronic keys, a voltage doubler, a light and sound alarm unit, and a power supply unit with a common negative conductor (see Utility Model Patent RU No. 9988, IPC G08B 17/10, publ. 1999.05. 16).

The known device provides a gas shutdown, the issuance of sound and light signals, the launch of the ventilation system in the event of a gas leak, however, the presence of a wired communication system limits the operational capabilities of the device.

A known system for monitoring and controlling remote objects containing analog sensors connected to an analog-to-digital converter that transmits signals to a data transmission unit connected wirelessly via a GPRS channel to a data reception unit. The data receiving unit, in turn, is connected to a control center to which executive devices are connected (see patent for utility model RU No. 66836, IPC G08B 25/10, publ. 2007.09.27).

However, the known system does not allow to memorize alarms from sensors and, in addition, servicing the system via the GPRS channel is a paid procedure and involves significant financial costs and complexity of the organization.

The task to which the claimed technical solution is directed is to create a multifunctional, fast-mounted and easy-to-use automatic gas contamination control system that communicates between the elements over the air.

The technical result achieved by using the claimed utility model is to provide complete control over the mass concentration of poisonous gases in large volumes and a complex configuration.

The specified technical result is achieved by the fact that the automatic gas control system contains at least two gas detection devices, a gas shut-off valve with electromagnetic control, an alarm and control unit and a control room, while a control room and all gas detection devices are connected to the alarm and control unit on the radio channel, and the gas shut-off valve is connected to the alarm and control unit using a wired communication line. The system may contain additional gas shut-off valves, connected via a wired communication line to the gas detectors. The gas detector contains a power supply and a microcontroller connected to the power supply, a gas detector, a light and sound alarm module, a radio channel information exchange module, a valve control module, a module for selecting a network address for a gas detector, while the microcontroller is connected to a gas detector, a light and sound indication, the module for the exchange of information on the radio channel, the valve control module for the shut-off valve and the module for selecting the network address of the signaling device IAOD. The signaling and control unit contains a power unit and a microcontroller connected to the power unit, a keyboard, a display, a radio information exchange module, an information receiving and output module, an alarm and control unit network address selection module, the microcontroller being connected to a keyboard, a display, an exchange module information on the radio channel, the module for receiving and issuing information, the module for selecting the network address of the signaling and control unit. The control room contains a power supply unit and a microcontroller connected to the power supply unit, a light and sound alarm module, a control room network address selection module and a radio channel information exchange module, while the microcontroller is connected to a light and sound alarm module, a control room network address selection module, a button emergency shutdown of the gas valve and the module for the exchange of information over the air.

The utility model is illustrated by drawings.

Figure 1 presents a General diagram of an automatic gas control system.

Figure 2 - schematically shows the design of the gas detector.

Figure 3 - presents the design of the signaling and control unit,

Figure 4 - schematically shows the design of the control tower,

The positions in the drawings indicate:

1 - gas detector;

2 - signaling and control unit;

3 - dispatching console;

4 - gas shutoff valve with electromagnetic control;

5 - power supply of the gas detector 1;

6 - power supply unit alarm and control 2;

7 - power supply unit of the dispatching console 3;

8 - microcontroller gas detector 1;

9 - microcontroller of the dispatching console 3;

10 - microcontroller of the signaling and control unit 2 with the possibility of maintaining an emergency log;

11 - gas pollution sensor;

12 - module of light and sound signaling of gas detector 1;

13 - module light and sound alarm remote control 3;

14 - module for the exchange of information on the radio channel of the gas detector 1;

15 - module for the exchange of information on the radio channel of the signaling and control unit 2;

16 - module for the exchange of information on the radio channel of the control room console 3;

17 - gas valve control module;

18 - module for selecting the network address of the gas detector 1;

19 is a module for selecting a network address of the signaling and control unit 2;

20 - module for selecting the network address of the dispatching console 3;

21 - keyboard;

22 - monochrome LCD with backlight;

23 - module for receiving and issuing information;

24 - emergency shut-off gas shut-off valve with electromagnetic control 4.

The automatic gas control system is a set of devices that provide full control over the state of smoke or gas contamination of an object, and contains at least two gas pollution indicators 1, an alarm and control unit 2, a control room 3 and an actuator - a gas shut-off valve 4 with electromagnetic management. Gas detectors 1 contain various gas detectors 11 - natural gas (hydrocarbons, methane) and carbon monoxide (carbon monoxide), and are designed for continuous monitoring of the content of methane and carbon monoxide in the air of residential and non-residential premises, issuing light and sound alarms, issuing alarm signals to the alarm and control unit 2, as well as control signals to the gas shutoff valve 4. The gas detector contains a power supply 5 connected to an alternating current network. All elements of the signaling device 1 are connected to the power supply unit 5, namely: a microcontroller 8, a gas detection sensor 11, a light and sound alarm module 12, a radio channel information exchange module 14, a shut-off valve control module 17, and a gas pollution detector network address selection module 18. The microcontroller 8 is connected to a gas pollution sensor 11, a light and sound alarm module 12, a radio channel information exchange module 14, a gas shut-off valve control module 17, and a network address selection module 18.

The alarm and control unit 2 is intended for receiving, indicating and storing signals from gas detectors 1, or from any other connected sensors: emergency parameters sensors, process equipment accident sensors, fire and security alarm sensors; for receiving and indicating signals from the gas shutoff valve 4 and issuing a control signal for the gas shutoff valve in an emergency. The signaling and control unit comprises a power unit 6 connected to an AC network. All elements of the signaling and control unit 2 are connected to the power supply unit 6, namely: a radio information exchange module 15, a microcontroller 10, a keyboard 21, a backlit monochrome liquid crystal display 22, and an information exchange (reception and delivery) module 23 with external devices, for example gas shutoff valve 4, module 19 for selecting a network address of the alarm and control unit. The microcontroller 10, in contrast to the microcontrollers 8 and 9, is configured to maintain a log of emergency situations, that is, is equipped with a storage device. The microcontroller 10 is also connected to the module 15 for the exchange of information over the air, module 19 for selecting the network address of the signaling and control unit, keyboard 21, display 22 and module 23 for receiving and issuing information.

The dispatching console 3 is designed to indicate light and sound alarm information about the operation coming from the alarm and control unit 2, as well as to issue a gas valve closing signal connected to the alarm and control unit. The dispatching console contains a power supply 7 connected to an AC network. The microcontroller 9, the light and sound signaling module 13, the network address selection module 20 of the dispatching console, and also the radio communication module 16 are connected to the power supply 7. The light and sound signaling module 13, the dispatch console network address selection module 20, the radio channel information exchange module 16, and the emergency shut-off gas shut-off valve button 24 with electromagnetic control 4 are connected to the microcontroller 9.

The operation of the device is as follows.

Before starting work, all the devices included in the automatic gas control system are installed. The gas detectors 1 are installed in the places of the most probable gas accumulation: the natural gas contaminants are fixed on a vertical surface at a distance of 10-30 cm from the ceiling, and the carbon monoxide detectors are fixed on a vertical surface at a distance of 1.5-2 m from the floor, not closer than 2 m from the place of fresh air; installed signaling devices are connected via wires to the power supply network. The alarm and control unit 2 is located in relative proximity to the shut-off valve 4 installed on the gas pipeline, connect it to the power supply network, and also connect the electromagnetic drive of the valve 4 and the module 23 for receiving and issuing information of the signaling and control unit 2 using a wire. A wired connection to the shutoff valve 4 of the closest gas detector 1 is possible using the gas shutoff valve control module 17. The operator’s control room 3 is located at the operator’s location, it is connected to the power supply network, then the radio communication channel is installed between the modules 14, 15, 16 of the signaling devices 1, block 2 and the remote control 3, respectively, using modules 18, 19, 20, which assign addresses to all devices in the radio network .

When the gas detector 11 is activated in any of the gas detectors 1, the signal from the sensor 11 enters the microcontroller 8, which sends signals to the light and sound signaling module 12 of the signaling device 1, which informs maintenance personnel about the sensor’s response, to module 17 for the gas supply valve 4 to be shut off, and also to module 14, which transmits a signal over the air to the signaling and control unit 2. Module 15 of block 2 receives the radio signal from the signaling device 1 and transmits it to the microcontroller 10, recording information about the time and number of the triggered signaling device. Then, the microcontroller 10 sends a signal to the information reception and output module 23, which generates a control signal for the external device, for example, the closing signal for the valve 4. At the same time, the microcontroller 10 sends a signal to the module 15 of block 2, which transmits it over the air to the control room 3. Module 16 of the remote control 3 receives the radio signal from the signaling and control unit 2 and transmits it to the microcontroller 9 of the console 3, which in turn directs the signals to the light and sound signaling module 13 of the console 3, notifying th staff tripping alarm gassed 1.

The signaling and control unit 2 in the monitoring mode continuously “polls” the status of all the blocks of the wireless network, sending signals over the air. The gas detectors 1, having received a signal from the signaling and control unit 2, form a response containing information about the state of the sensors and actuators, and send it over the air. Block 2 displays all the detailed information collected from each element of the wireless network on the display 22. If necessary, the operator can use the keyboard 21 to issue control signals to technological equipment additionally connected to module 23 or gas detectors 1, for example, a signal to close valve 4 connected to signaling device 1, or to monitor the operability of all elements of each block. In the event of an emergency, the operator has the opportunity to close the gas valve 4 connected to the alarm and control unit by pressing the button 24 of the control room 3, the radio signal from which is transmitted to block 2.

An example of a specific implementation.

An automatic gas control system (SAKZ-MKS) for a boiler room has been manufactured, including six SZ-1-1G gas signaling devices over each gas boiler, one BSU-K signaling and control unit located near the gas pipeline, one remote control dispatcher located in the service room gas boiler room personnel. Microcontrollers from the 18F family of microchips are used in the gas detector, the control room and the alarm and control unit. The modules for the exchange of information over the radio channel are implemented on the TRC101 chips of RF Monolithics. The signaling and control unit uses a standard NEC four-line monochrome display, as well as a 20-button keyboard. Each module for selecting the network address of the device is implemented using six microswitches. The distance between the boilers is about two meters, the distance from the boilers to the alarm and control unit is three meters, the distance from the alarm and control unit to the control room is ten meters. The frequency of the used radio channel is 933 MHz.

The inventive system can be used not only to monitor the content of natural gas and carbon monoxide in the air, but also to monitor the status of the sensors emergency parameters of the boiler room, as well as the status of the sensors of accidents of technological equipment, in addition, the system can be used for fire and security alarms. The automatic gas control system ensures that the gas supply pipe is shut off by the valve in an emergency, gives sound and light alarms with storing the cause of the accident and displays this information on the remote control panel, controls the executive device.

Claims (5)

1. An automatic gas control system containing at least two gas detectors, a gas shut-off valve with electromagnetic control, an alarm and control unit and a control room, while a control room and all gas warning devices are connected to the signal and control unit via a radio channel, and the gas shut-off valve is connected to the signaling and control unit via a wired communication line. 2. The system according to claim 1, characterized in that it contains additional gas shutoff valves connected via a wired communication line to the gas detectors. 3. The system according to claim 1, characterized in that the gas detector contains a power supply and a microcontroller connected to the power supply, a gas pollution sensor, a light and sound alarm module, a radio channel information exchange module, a shut-off valve control module, a gas pollution detector network address selection module while the microcontroller is connected to a gas pollution sensor, a light and sound indication module, a radio channel information exchange module, a valve control module and a shut-off module selection of the network address of the gas detector. 4. The system according to claim 1, characterized in that the signaling and control unit comprises a power unit and a microcontroller, a keyboard, a display, an information exchange module via a radio channel, an information reception and delivery module, a network address selection module of an alarm and control unit connected to the power supply unit while the microcontroller is connected to a keyboard, a display, an information exchange module on a radio channel, an information reception and delivery module, a network address selection module of a signaling and control unit. 5. The system according to claim 1, characterized in that the control room contains a power supply and a microcontroller, a light and sound alarm module, a network address selection module for the control room and an information exchange module via a radio channel connected to the power supply, the microcontroller is connected to the light module and an audible alarm, a module for selecting the network address of the control room console, an emergency shut-off button for the gas valve, and an information exchange module over the air.