Automatic gas heater control device

FIELD: heating systems.

SUBSTANCE: automatic gas heater control device relates to control and monitoring systems. It contains the following parts connected to each other: controller, relay switching panel with electromagnetic relays, voltage converter, terminal plate, and LED indicators with built-in resistors. Controller is connected to LED indicators through the terminal plate. Controller, relay switching panel, and voltage converter are connected to terminals for output.

EFFECT: simplifying the design at maintaining the required functional capabilities.

4 cl, 3 dwg, 1 tbl

 

The invention relates to the control and regulating systems for General purpose and can be used in devices for control and automatic control of the heater gas, oil, oil emulsions, water and other products.

Known control system and control provisions of the regulatory bodies (inventor's certificate SU for the invention №1284408), which contains the control unit, the command unit, switching unit, terminals, bus.

Also known management system pre-heater of the internal combustion engine [RU patent for the invention №2213251]. The system includes a control unit comprising a processor node, the node control sensors, host switching devices, site, zone, site management bodies, the power supply unit.

Also known device for controlling a liquid heater [SU patents for invention №966276, No. 1260553, EN for the invention №2183797]. These devices contain a control node, the switching node, chain coordination and feedback, the power supply module. In some of them there is a time relay, for example a device for automatic control of the fluid heater [patent SU for the invention №1260553].

There is also known a control unit Start-02" [http://obshchemash.ru/Blocupr/start2.htm LLC "Obamas"], designed to ensure automatiser the bath ignition and control the working status of gas and oil burners industrial power equipment, and integrated management system "IAC-07" [OOO Elcom-NN], intended for automation of work of gas heaters, automation of boilers and mini-boiler.

Also known complex automation gas generator genset [RU patent for the invention №2218587]relating to regulatory and control systems General purpose. The above-mentioned complex includes a programmable controller, modules discrete input and discrete output, power supply, relay unit, control panel and display, automatic switch.

Known also blocks the control, protection and alarm module compressor petrol (patent RU FROM No. 2211471 and PM No. 18584)containing programmable controller, consisting of a processor module with a flash memory system bus VME modules discrete input and discrete output, the display panel, thermo stabilizer, a counter operating time.

There is also known a control unit gas heater [passport BOOK-PG RPE tan-it", Saratov, p.1, 3, 5, 6, 15], having closed metal housing, inside of which contains a printed circuit Board with single-chip microcontroller and supporting elements, a power transformer with rectifiers and stabilizers. On the walls of the housing - operative control, connectors for connection the Oia external sensors and actuators, the elements of the operational and alarm and fuses. Switch the power carried by the AC voltage of 220 C. the Unit is placed in a closed heated room, connect to the managed heater through an intermediate terminal boxes. The above-mentioned control unit performs the automatic remote ignition and safety shut off heater in case of an inadmissible deviation of the controlled parameters, the operation of alarm and a working alarm.

However, this unit cannot be placed directly on the heater because it only works in a heated room. This control unit is also limited the ability to change the settings of the ignition program due to insufficient memory of the microcontroller and control the temperature of the heated product and no communication with the upper level of the automated system of control systems.

The closest analogue of the claimed invention is the control unit and control [RU patent for the invention №2275669]containing the microcontroller, measurement Converter modular terminal cost, modules discrete input and discrete output, the display Board, power supply, expansion card analog inputs, cost galvanic isolation, cost control and protection, counter the straps work. The display is connected via a microcontroller with discrete sensors, remote control shield control. The microcontroller is also connected to a Board switching, expansion card analog input card galvanic isolation. Measurement Converter modular connected to the expansion card analog inputs. Modules discrete input and output are connected with the terminal Board.

However, in the control unit and the control includes a large number of functional modules, and the unit does not have the ability to quickly change settings of the program, since there is no communication with the upper level system.

The task of the claimed device is to simplify the design while preserving its functionality.

The essence of the invention. Automatic control device, gas heater is characterized in that it contains a controller having input ports and output discrete signals, the input port analog signals, a generic port I / o UNIO48, port communication interface terminals for input power panel relay switching voltage Converter, the terminal charge led indicators with integrated resistors, terminals for output on the functional elements of the heater and on the upper level of the automated control system, the rich port of the output digital signals connected to the relay panel switching terminals for input power is connected to the voltage Converter, universal port I / o UNIO48 - with led indicators via a terminal cost, input ports digital and analog signals - with terminals for output on digital and analog sensors heater, port communication interface with terminals for output to the upper level of the automated control system; panel relay switching and the voltage Converter are connected in parallel, panel relay switching and the voltage Converter is connected in turn with terminals for output to the Executive heater elements.

Moreover, there is an automatic control unit, gas heater with the above characteristics, in which the terminals for output performed in a separate compartment.

Moreover, there is an automatic control unit, gas heater with the above characteristics, in which the panel relay switching includes parallel connected electromagnetic relay.

Moreover, there is an automatic control unit, gas heater with the above characteristics, in which the communication port controller interface represents the interface type RS-485.

The technical result is achieved due to the simplification of construction, without limiting clause and necessary functionality. Thanks designed by a team of authors of the inventive device it is possible to configure settings for the ignition program, algorithm parameters regulating the temperature of the heated product, and survey of discrete sensors with the top level of the ACS. This device performs the display of the status of actuators and sensors with led indicators, continuous transfer of information about the state of the heater, namely, stop, accident and about the current temperature of the heated product to the top level of the ACS, as well as receiving commands from the top level of the ACS. This device is designed for use with automatic ignition heater for automatic condition monitoring sensors, implementing technological process, maintain the setpoint temperature of the product within the specified limits, control of emergency situations and communication with upper level management information systems. The proposed device can be operated in the open air with ambient temperature from -40°C to +50°C. This explains a number of characteristic features - resistant to moisture, heat, frost design, and therefore became possible placement of automatic control devices, gas heater directly on pomogranate is e, in this regard, decreases the length of the cable links connecting the proposed device and the heater, and eliminates the need for intermediate junction boxes unlike one of the aforementioned analogues. Automatic control device, gas heater implements automatic control mode heater.

The invention is illustrated using the supplied 1-3 and table are:

Figure 1 - structural diagram of the inventive device;

Figure 2 - scheme of the structural connection of the claimed device to the heater;

Figure 3 - circuit diagram of the inventive device;

Table - list of elements shown in the circuit diagram, in which the positions 1-16 indicated:

1 - controller;

2 - panel switching relays;

3 - voltage Converter;

4 - terminal Board;

5 - led indicators;

6 - terminals for output.

7 - port input discrete signals;

8 - port analog input;

9 - port output discrete signals;

10 - port I / o UNIO48;

11 - port communication interface;

12 - electromagnetic relay;

13 - compartment;

14 - button "Stop";

15 - button "start";

16 - switch Network.

Applying automatic control unit, gas heater, which the soda is separated by interconnected controller 1, panel 2 relay switching voltage Converter 3, the terminal cost 4, led 5 with built-in resistors, terminals 6 for output. The presence of the claimed device is required in the gas heater and oil. The heater may include some other object, such as gas station, which, in turn, an automated control system. To enable and shutdown of the gas heater and oil are the "Stop" button 14 and the start button 15.

Controller 1 (RTU188 Fastwel) has ports 7-11, presented in the form of connectors with an input voltage of 24V and receiving input signals from analog and digital sensors, issuing output signals on the terminal card 4 and the panel 2 relay switching: port input 7 discrete signals, the input port 8 analog signals, the output port 9 of discrete signals, port I / o 10 UNIO48, port 11 a communication interface with a software implementation. The functioning of the inventive device with sensors and actuating elements of the heater are carried out with the working of the control program, housed in the controller memory 1. The controller 1 receives, processes and transmits information from sensors, actuators. The controller 1 includes terminals for input power, through which the controller is connected to the voltage Converter 3 through the wires. The wires belonging to the same port, share a common bus. The output port 9 of discrete signals of the controller 1 is connected to the panel 2 relay switching by train (flat cable with IDC-type connectors), all-purpose port I / o 10 UNIO48 controller 1 - with led indicators 5 through the terminal card 4 through the second loop, input ports digital and analog signals 7 and 8 respectively with terminals 6 for output to the heater, namely, its discrete and analog sensors, connected through wires (one wire is connected to one terminal). The controller 1 is connected with the upper level ACS communications interface RS-485 port 11 communication interface with terminals 6 for output intended for connection with the upper level system.

Panel 2 relay switching (TBR 8 Fastwel)containing a set of parallel connected electromagnetic relay 12, provides the coordination of the output signals of the controller 1 and the signals for actuating the elements of the heater. Electromagnetic relay 12 is presented in the form of a normally open single-pole channels, providing the possibility of switching circuit when the load current up to 10 a at a voltage of up to 270 VAC or 30 VDC. Panel 2 relay switching performs switching of power circuits for AC and DC with the help of the eight electromagnetic relay 12. Panel 2 relay switching and terminal 6 connected to output wires. When turning on the switch Network 16, the circuit is closed and there is tension.

Converter 3 voltage (HCL 150.10) converts the 24 V voltage 5 V to power the controller 1. The controller 1 is designed for a voltage of 5 V, Executive items - for a voltage of 24 C. the voltage Converter 3 is connected to terminals 6 for output through the wires. The voltage Converter 3 and the panel 2 switching relays connected in parallel.

Terminal Board 4 moves from one train to multiple terminals for supplying power to the LEDs 5.

The inventive device may be a barrier spark protection (TCC-Ex "TECON"), which connects intrinsically safe zone automatic electronic controls for gas heater with hazardous area heater. The spark protection barrier is connected to the controller 1 through the communication interface RS-232.

The proposed device has a compartment 13 adapter, which contains a terminal 6 for output and is separated from the above-mentioned elements. Division of automatic control devices of the gas heater eliminates the possibility of damage and unplugging these items when you connect the claimed device to the heater through located in the compartment 13 of the terminal 6 to which Yoda on the heater, namely, its power, its discrete and analog sensors, its Executive members, and on the top level of the ACS object that includes a heater, such as ACS gas distribution station. Compartment 13 is made, for example, on the basis of terminals WAGO as standardly spaced rows of terminals 6 for output. Fuses are placed in the terminals 6 for output intended to supply power to the automatic control unit gas heater.

Automatic control device, gas heater works as follows. Voltage is applied through terminal 6 for output to the heater, which is not part of the claimed device, located in a separate compartment 13, the power source of the heater when turning on the switch Network 16 simultaneously on the panel 2 switching relays and through the voltage Converter 3 to the controller 1. With universal port I / o 10 UNIO48 controller 1 is the voltage on the terminal card 4, the LEDs 5. Check the operation of the LEDs 5. After 15 sec mode "Stop". The controller 1 "polls" ports 7 and 8 analog input and discrete input signals, checks, normally if the sensors on the heater. If any of the sensors heater does not function normally, they light up with testwuide led indicators 5.

From Stop mode by long pressing the Stop button 14 can translate the inventive device in the ' Test ' mode, which allows you to check the functioning of the Executive elements.

After pressing the start button 15, the controller 1 transfers the inventive control device in the Ventilation mode. Then after about 10 min, mode begins "Ignition". The controller 1 transmits signals to the panel 2 switching relays, electromagnetic relays 12 include actuators in a given program ignition sequence.

After ignition of the inventive device goes into "run"mode. In this mode, the positional regulation of the temperature of the heated product in accordance with the analog signal of the temperature sensor taken by the controller 1 via terminals 6 for output to the heater. If the current temperature of the heat carrier, which carry out heating of the gas in the heater, below the lower limit of zone heat control gas, the sensor activates the small burning, located in the heater. If the coolant temperature is above the upper boundary of zone heat control gas, the sensor activates a large burning, located in the heater, and the heater goes in the weak combustion mode. If in the weak combustion mode, the growth temperature prodolzhaet is, enters the "Waiting" mode (works only pilot burner), which lasts as long as the temperature does not return within the specified range.

The adjustment and control of the parameters is done with the top level of the ACS. To ensure control of the modes of operation of the heater and the remote control a serial data channel via RS-485 port 11 communication interface.

In case of emergency there is an automatic shutdown of the gas supply with an appropriate notification of the reasons for the shutdown led indicators 5.

Example.

The product was successfully tested on LLC plant "Gazproms" Saratov, acceptance and certification tests.

Automatic control device for gas heater.

Table
The list of elements to the schematic electrical diagram of the inventive device
POS. designationNameNumber.Note
A1Panel relay switching TBR8 1Fastwel
A2The controller RTU188-MX1Fastwel
A3Payment terminal TV1Fastwel
A4Converter NSU 05 31Continent
A5The barrier spark protection TCC EHA DARTS1TEKOH
FU1, FU2Fuse VPB-11 1A/2502In the case of X4
H1 H12...Led with holder L-53SRD-5V12The CHIP industry
H13...nLed with holder L-53SGD-5V6The CHIP industry
NLed with holder L-608G1The CHIP industry
R1Resi is a torus C2-N-0.25 to 3 kω±5% 1
S1Button PSW-4016, green1
S2Button PSW-4016, red1
S3Switch VN (SPDT)3
X1Terminal 280-65414WAGO
X2Terminal 280-64124WAGO
X3Terminal 280-6515WAGO
X4Terminal 282-1222WAGO
X5Terminal 280-6415WAGO
X6Terminal 280-8264WAGO
X7The terminal number of the dka 507F 1ABAC
ZTerminal 280-6371WAGO

1. Automatic control unit, gas heater, characterized in that it comprises a controller having input ports and output discrete signals, the input port analog signals, a generic port I / o UNIO48, port communication interface terminals for input power panel relay switching voltage Converter, the terminal charge led indicators with integrated resistors, terminals for output on the functional elements of the heater and on the upper level of the automated control system, and the output port of discrete signals is connected to the panel switching relays, terminals for input power is connected to the voltage Converter, universal port I / o UNIO48 - with led indicators via a terminal cost, input ports digital and analog signals - with terminals for output on digital and analog sensors heater, port communication interface with terminals for output to the upper level of the automated control system; panel relay switching and the voltage Converter are connected in parallel, panel relan the th switching and the voltage Converter is connected in turn with terminals for output to the Executive heater elements.

2. The device according to claim 1, characterized in that the terminals for output performed in a separate compartment.

3. The device according to claim 1, characterized in that the panel relay switching includes parallel connected electromagnetic relay.

4. The device according to claim 1, characterized in that it has a communication port controller interface, is the interface type RS-485.



 

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