Flameout protection alarm joint control module and system

Abstract

The utility model provides a flameout protection alarm joint control module and system, in the flameout protection alarm joint control module, a single-chip microcomputer control unit is electrically connected with a working mode input unit, an external alarm input unit, a state indicating lamp control unit and a relay output control unit respectively, and is arranged on the same PCB; the single-chip microcomputer control unit generates a state indicating lamp control signal according to a working mode signal received by the working mode input unit and transmits the state indicating lamp control signal to the state indicating lamp control unit, and generates a relay control signal according to an external alarm signal received by the external alarm input unit and transmits the relay control signal to the relay output control unit. The state indicator lamp control unit executes working state indication and alarm information indication actions according to the state indicator lamp control signal; and the relay output control unit executes remote transmission actions of opening and closing of the fuel valve, the working state and alarm information according to the relay control signal, so that an integrated flameout protection alarm joint control technical scheme is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial flameout joint control protection, in particular to a flameout protection alarm joint control module and system. Background Art

[0002] With the continuous development of petrochemical, metallurgical, coal chemical, ceramic and other industries, various industrial sectors have higher and higher requirements for production safety. Industrial production widely involves gas boilers, burners, kilns, torches and other applications. For this, flameout protection alarm joint control equipment is often used to monitor and alarm gas leakage, underpressure, flameout and other conditions in the production process.

[0003] Most of the flameout protection alarm control devices currently available on the market use scattered relays, contactors, time relays, etc. connected by wires to form an electrical control circuit. Each device may be deployed in different locations due to different implementation personnel or application scenarios. The flameout protection alarm control devices thus formed have many devices, large size, complex wiring and wiring, high cost, and inconvenient maintenance.

[0004] Therefore, it is necessary to provide a flameout protection alarm joint control technical solution that occupies a small space, has simple circuits, and is easy to maintain. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a flameout protection alarm joint control module and system.

[0006] The utility model provides a flameout protection alarm joint control module, including a single chip microcomputer control unit, a working mode input unit, an external alarm input unit, a status indicator light control unit, and a relay output control unit;

[0007] The single-chip microcomputer control unit, the working mode input unit, the external alarm input unit, the status indicator light control unit, and the relay output control unit are collectively arranged on the same PCB printed board;

[0008] The single chip control unit is electrically connected to the working mode input unit, the external alarm input unit, the status indicator light control unit, and the relay output control unit respectively;

[0009] Wherein, the working mode input unit is used to receive the working mode signal representing the state of the mode conversion switch and transmit it to the single chip control unit;

[0010] The external alarm input unit is used to receive an external alarm signal and transmit it to the single chip control unit;

[0011] The single-chip control unit generates a status indicator light control signal according to the working mode signal and the external alarm signal and transmits the signal to the status indicator light control unit, and generates a relay control signal and transmits the signal to the relay output control unit;

[0012] The status indicator light control unit performs working status indication and alarm information indication actions according to the status indicator light control signal;

[0013] The relay output control unit executes the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information according to the relay control signal.

[0014] In a possible implementation, the single-chip microcomputer control unit includes a single-chip microcomputer;

[0015] The first input end of the single-chip microcomputer is electrically connected to the output end of the working mode input unit, the second input end thereof is electrically connected to the output end of the external alarm input unit, the first output end thereof is electrically connected to the input end of the status indicator light control unit, and the second output end thereof is electrically connected to the input end of the relay output control unit;

[0016] The input end of the working mode input unit is used to receive the working mode signal;

[0017] The input end of the external alarm input unit is used to receive the external alarm signal;

[0018] The output end of the status indicator light control unit is used to output a first control signal to perform working status indication and alarm information indication actions;

[0019] The output end of the relay output control unit is used to output a second control signal to execute the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information.

[0020] In a possible implementation, the working mode input unit includes a first optical coupling module;

[0021] The optocoupler input end of the first optocoupler module is used to receive the working mode signal, and the optocoupler output end thereof is electrically connected to the first input end of the single chip microcomputer.

[0022] In a possible implementation, the external alarm input unit includes a second optical coupling module;

[0023] The optocoupler input terminal of the second optocoupler module is used to receive the external alarm signal, and the optocoupler output terminal thereof is electrically connected to the second input terminal of the single chip microcomputer.

[0024] In a possible implementation, the status indicator light control unit includes a third optical coupling module and a triode module;

[0025] The optocoupler input end of the third optocoupler module is electrically connected to the first output end of the single chip microcomputer, and the optocoupler output end thereof is electrically connected to the base of the transistor module;

[0026] The collector and the emitter of the transistor module are used to output the first control signal according to the on and off states.

[0027] In a possible implementation, the relay output control unit includes a Darlington array module and a relay module;

[0028] The input end of the Darlington array module is electrically connected to the second output end of the single chip microcomputer, and the output end thereof is electrically connected to the control end of the relay module;

[0029] The switch end of the relay module is used to output a second control signal.

[0030] In a possible implementation, it further includes a communication unit;

[0031] The communication unit is arranged on the PCB printed board and is electrically connected to the single chip microcomputer control unit.

[0032] In a possible implementation, the device further includes a power supply unit;

[0033] The power supply unit is arranged on the PCB printed board, and is electrically connected to the single-chip microcomputer control unit, the working mode input unit, the external alarm input unit, the status indicator light control unit, the relay output control unit, and the communication unit respectively.

[0034] The utility model also provides a flameout protection alarm joint control system, comprising a DCS control module and the flameout protection alarm joint control module as described above;

[0035] The DCS control module is electrically connected to the relay output control unit in the flameout protection alarm joint control module;

[0036] The relay output control unit feeds back a relay on / off signal to the DCS control module according to the relay control signal, thereby executing remote transmission of the working status and alarm information.

[0037] In a possible implementation, in the flameout protection alarm joint control system, the single-chip microcomputer control unit includes a single-chip microcomputer;

[0038] The first input end of the single-chip microcomputer is electrically connected to the output end of the working mode input unit, the second input end thereof is electrically connected to the output end of the external alarm input unit, the first output end thereof is electrically connected to the input end of the status indicator light control unit, and the second output end thereof is electrically connected to the input end of the relay output control unit;

[0039] The input end of the working mode input unit is used to receive the working mode signal;

[0040] The input end of the external alarm input unit is used to receive the external alarm signal;

[0041] The output end of the status indicator light control unit is used to output a first control signal to perform working status indication and alarm information indication actions;

[0042] The output end of the relay output control unit is used to output a second control signal to execute the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information.

[0043] The technical solution provided by the utility model has at least the following beneficial effects:

[0044] By arranging the single-chip control unit, working mode input unit, external alarm input unit, status indicator light control unit, and relay output control unit on the same PCB printed board, an integrated circuit design is achieved, which has a smaller size and volume, and the wiring and wiring are simple and clear, which is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of the first structure of the flameout protection alarm joint control module provided by an embodiment of the utility model;

[0046] Figure 2 A second structural schematic diagram of the flameout protection alarm joint control module provided by an embodiment of the utility model;

[0047] Figure 3 A third structural schematic diagram of the flameout protection alarm joint control module provided by an embodiment of the utility model;

[0048] Figure 4 A specific circuit schematic diagram of a single chip microcomputer control unit provided by an embodiment of the utility model;

[0049] Figure 5 A specific circuit schematic diagram of a working mode input unit provided in an embodiment of the utility model;

[0050] Figure 6 A specific circuit schematic diagram of an external alarm input unit provided by an embodiment of the utility model;

[0051] Figure 7 A specific circuit schematic diagram of a status indicator light control unit provided by an embodiment of the utility model;

[0052] Figure 8 A specific circuit diagram of the first part of the relay output control unit provided by the embodiment of the utility model;

[0053] Fig. 9 A specific circuit diagram of the second part of the relay output control unit provided by the embodiment of the utility model;

[0054] Fig.10 A specific circuit schematic diagram of a communication unit provided in an embodiment of the utility model;

[0055] Fig.11 A specific circuit schematic diagram of a power supply unit provided in an embodiment of the utility model;

[0056] In the accompanying drawings, 10, single-chip microcomputer control unit; 11, single-chip microcomputer; 12, dip switch; 20, working mode input unit; 21, first optocoupler module; 30, external alarm input unit; 31, second optocoupler module; 40, status indicator light control unit; 41, third optocoupler module; 42, transistor module; 50, relay output control unit; 51, Darlington array module; 52, relay module; 60, PCB printed board; 70, communication unit; 80, power supply unit. DETAILED DESCRIPTION

[0057] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.

[0058] Please refer to Figure 1 The utility model provides a flameout protection alarm joint control module, including a single chip control unit 10, a working mode input unit 20, an external alarm input unit 30, a status indicator light control unit 40, and a relay output control unit 50;

[0059] The single chip control unit 10, the working mode input unit 20, the external alarm input unit 30, the status indicator light control unit 40, and the relay output control unit 50 are collectively arranged on the same PCB printed board 60;

[0060] The single chip control unit 10 is electrically connected to the working mode input unit 20, the external alarm input unit 30, the status indicator light control unit 40, and the relay output control unit 50 respectively;

[0061] The working mode input unit 20 is used to receive a working mode signal representing the state of the mode conversion switch and transmit it to the single chip control unit 10;

[0062] The external alarm input unit 30 is used to receive an external alarm signal and transmit it to the single chip control unit 10;

[0063] The single chip control unit 10 generates a status indicator light control signal according to the working mode signal and the external alarm signal and transmits it to the status indicator light control unit 40, generates a relay control signal and transmits it to the relay output control unit 50;

[0064] The status indicator light control unit 40 performs working status indication and alarm information indication actions according to the status indicator light control signal;

[0065] The relay output control unit 50 performs the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information according to the relay control signal.

[0066] In this embodiment, the single-chip control unit 10 is the control center of the flameout protection alarm linkage control module, which can be specifically composed of a conventional processor chip with resistors, capacitors, light-emitting diodes, dial switches, etc., and its main function is to perform input and output logic control according to the flameout protection linkage control requirements. The working mode input unit 20 can be composed of diodes, resistors, optocouplers, etc., and its main function is to receive three input state signals of emergency stop, manual, and automatic in real time, that is, the working mode signals representing the three states of the mode conversion switch. The mode conversion switch can adopt a conventional knob switch. The external alarm input unit 30 can be composed of diodes, resistors, optocouplers, etc., and its main function is to receive three alarm input state signals of the flame detector, pressure switch, i.e., gas pressure switch, and gas alarm in real time, i.e., external alarm signals. The gas alarm can adopt a gas leak transmitter. The pressure switch is used to detect the gas pressure. The status indicator light control unit 40 can be composed of resistors, transistors, optocouplers, etc., and its main function is to indicate the working state and alarm information. The relay output control unit 50 can be composed of a Darlington tube, a resistor, a relay, etc., and its main function is to control the opening and closing of the fuel valve, and the remote transmission of the working state and alarm information. The fuel valve can be a conventional gas valve.

[0067] In specific implementation, the mode conversion switch is electrically connected to the working mode input unit 20, the flame detector, the pressure switch, and the gas alarm are electrically connected to the external alarm input unit 30, the indicator light group for indicating the working state and the alarm information is electrically connected to the state indicator light control unit 40, and the fuel valve and the DCS control module are electrically connected to the relay output control unit 50. When the remote transmission of the working state and the alarm information is realized, the relay output control unit 50 outputs the relevant switch quantity signal to the DCS control module, and the DCS control module uploads the working state and the alarm information to the host computer to realize the remote transmission of data. The indicator light group may include a leakage fault indicator light, a fault alarm light, an undervoltage fault indicator light, a ignition indicator light, a flameout fault indicator light, a manual operation indicator light, an automatic operation indicator light, a valve state indicator light, etc.

[0068] In the first specific implementation, when the flameout protection alarm joint control module is powered on, the gas leakage transmitter and the gas pressure switch start to operate. At this time, if the gas pressure switch detects that the gas pressure is lower than the set value or the gas leakage transmitter detects a gas leak, the external alarm input unit 30 receives the alarm input state signal of the gas pressure switch or the gas leakage transmitter, that is, one of the external alarm signals (gas underpressure alarm or gas leakage alarm), and the single-chip control unit 10 generates a status indicator light control signal according to the external alarm signal and transmits it to the status indicator light control unit 40, generates a relay control signal and transmits it to the relay output control unit 50, and the status indicator light control unit 40 controls the undervoltage fault indicator light or the leakage fault indicator light to light up, and controls the fault alarm light to flash and beep, and the relay output control unit 50 interlocks the fuel valve, and the mode conversion switch cannot be operated manually or automatically at this time. Only when the gas pressure is normal and there is no gas leakage, can manual or automatic operation be performed.

[0069] In the second specific implementation, it is assumed that the flameout protection alarm joint control module needs to enter the manual operation mode, that is, the manual mode. When the fuel valve is in the open state, the mode conversion switch needs to be rotated to the manual state position. At this time, the working mode input unit 20 receives the manual input state signal, and the single-chip control unit 10 generates a state indicator light control signal according to the working mode signal and transmits it to the state indicator light control unit 40. The state indicator light control unit 40 controls the manual operation indicator light to light up, and the fuel valve remains open. At this time, if the flame detector detects that there is a fire, the external alarm input unit 30 receives the flame detector's fire signal, that is, one of the external alarm signals, the single-chip control unit 10 generates a state indicator light control signal according to the external alarm signal and transmits it to the state indicator light control unit 40, generates a relay control signal and transmits it to the relay output control unit 50, and the state indicator light control unit 40 controls the ignition indicator light to light up. On the contrary, if the flame detector detects that there is no fire or the flame is extinguished (flameout fault), the state indicator light control unit 40 controls the flameout fault light to light up, and controls the fault alarm light to flash and beep, prompting the operator that the flame is extinguished. After the operator is in place, he can turn the mode conversion switch to the off position, the fuel valve is closed, and the status indicator control unit 40 controls the fault alarm light to flash and stop beeping. The manual operation mode can be restarted only after the operator eliminates the fault. During manual operation, the system interlocks and closes the fuel valve when the gas underpressure alarm or gas leakage alarm occurs, but during manual operation, the flameout fault only alarms and does not interlock and close the fuel valve. It is suitable for maintenance. In other working conditions, it should be used with caution to achieve the purpose of safe operation. When the operator finishes the manual operation, turn the mode conversion switch to the off position, the fuel valve remains closed, and the manual operation ends.

[0070] In the third specific implementation, it is assumed that the flameout protection alarm joint control module needs to enter the automatic operation mode, that is, the automatic mode. When the fuel valve is in the closed state, the mode conversion switch needs to be turned to the automatic state position. At this time, the working mode input unit 20 receives the automatic input state signal, and the single-chip control unit 10 generates a state indicator light control signal according to the working mode signal and transmits it to the state indicator light control unit 40, generates a relay control signal and transmits it to the relay output control unit 50. The state indicator light control unit 40 controls the automatic operation indicator light to light up, and the relay output control unit 50 controls the fuel valve to open automatically. At this time, if the flame detector detects that there is fire, the ignition indicator light is controlled to light up as in the above steps. On the contrary, if no fire is detected or the flame is extinguished (or when the gas is under-pressure or gas leaks during the automatic operation of the system), the fuel valve is automatically interlocked and closed, and the flameout fault indicator light, under-pressure fault indicator light, and leakage fault indicator light are controlled to light up, and the fault alarm light flashes and beeps to prompt the operator that the flame is extinguished. After the operator is in place, the mode conversion switch can be turned to the stop position, and the fault alarm light stops beeping. When the operator eliminates the fault, the automatic operation mode can be restarted. When the automatic operation ends, turn the mode conversion switch to the off position, the fuel valve is closed, and the automatic operation ends. Among them, an emergency stop button can also be set on the mode conversion switch to output the emergency stop input status signal. When the inspection personnel find an emergency, they can press the emergency stop button, and all the equipment in the system will stop working, and the fuel valve will automatically close to ensure the safety of the system. The off position of the mode conversion switch can be directly connected to the controller of the fuel valve. When the mode conversion switch is in the off position, the fuel valve is directly controlled to close.

[0071] In summary, by providing a flameout protection alarm joint control module, the shortcomings of similar products such as many components, large size, low equipment integration, complex wiring and wiring, high cost, inconvenient maintenance and repair, and poor stability can be solved, and the application requirements under different working conditions can be met.

[0072] In one possible implementation, Figure 2 and Figure 3 , the single chip microcomputer control unit 10 includes a single chip microcomputer 11;

[0073] The first input terminal of the single-chip microcomputer 11 is electrically connected to the output terminal of the working mode input unit 20, the second input terminal thereof is electrically connected to the output terminal of the external alarm input unit 30, the first output terminal thereof is electrically connected to the input terminal of the status indicator light control unit 40, and the second output terminal thereof is electrically connected to the input terminal of the relay output control unit 50;

[0074] The input end of the working mode input unit 20 is used to receive the working mode signal;

[0075] The input end of the external alarm input unit 30 is used to receive the external alarm signal;

[0076] The output end of the status indicator light control unit 40 is used to output a first control signal to perform working status indication and alarm information indication actions;

[0077] The output terminal of the relay output control unit 50 is used to output a second control signal to execute the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information.

[0078] In this embodiment, the single-chip microcomputer 11 can be a conventional model. A dip switch 12 can also be provided in the single-chip microcomputer control unit 10, and the dip switch 12 is electrically connected to the single-chip microcomputer 11. The dip switch 12 can enable or disable some functions in the flameout protection alarm joint control module according to process requirements. For example, the state of the dip switch 12 can be read by the single-chip microcomputer 11 to determine whether to generate a relay control signal and transmit it to the relay output control unit 50.

[0079] In specific implementation, when the button on the dial switch 12 is turned to the first state, assuming that the gas alarm detects a gas leak, a gas leak signal, i.e., one of the external alarm signals, is transmitted to the external alarm input unit 30, and the single-chip computer 11 detects that the dial switch 12 is in the first state, then the relay control signal generated by the single-chip computer 11 does not include instructions for opening and closing the fuel valve, that is, when the system gas leaks, only an alarm is issued without interlocking to close the fuel valve. When the button on the dial switch 12 is turned to the second state, assuming that the gas alarm detects a gas leak, a gas leak signal, i.e., one of the external alarm signals, is transmitted to the external alarm input unit 30, and the single-chip computer 11 detects that the dial switch 12 is in the second state, then the relay control signal generated by the single-chip computer 11 includes instructions for opening and closing the fuel valve, that is, when the system gas leaks, not only an alarm is issued but also the fuel valve is interlocked to close.

[0080] In a specific embodiment, Figure 4 The single-chip microcomputer 11 in the single-chip microcomputer control unit 10 is labeled U4, and the dial switch 12 is labeled SW1. The working voltage VCC is provided by the power supply unit 80. The single-chip microcomputer control unit 10 can also be provided with a light-emitting diode DS1 as a power indicator light and an online programming interface ISP. When the power supply is normal, the light-emitting diode DS1 is on.

[0081] In one possible implementation, Figure 3 , the working mode input unit 20 includes a first optical coupling module 21;

[0082] The optocoupler input terminal of the first optocoupler module 21 is used to receive the working mode signal, and the optocoupler output terminal thereof is electrically connected to the first input terminal of the single chip microcomputer 11 .

[0083] In this embodiment, the first optical coupling module 21 is implemented based on a conventional optical coupling. Figure 5 , the first optocoupler module 21 can be composed of three optocouplers U5-U7, three diodes D8-D10, six resistors R6-R11, and a J3 external interface electrically connected. The output ends of the three optocouplers U5-U7 are respectively connected to the first input ends (IO1, IO2, IO3) of the single-chip microcomputer 11, and the IN-JT, IN-SD, and IN-ZD pins of the J3 external interface are respectively connected to the three pins of the mode conversion switch representing emergency stop, manual, and automatic. Another L-SD pin of the J3 external interface is connected to the manual operation indicator light externally, and is connected to the status indicator light control unit 40 internally.

[0084] In one possible implementation, Figure 3 , the external alarm input unit 30 includes a second optical coupling module 31;

[0085] The optocoupler input terminal of the second optocoupler module 31 is used to receive the external alarm signal, and the optocoupler output terminal thereof is electrically connected to the second input terminal of the single chip microcomputer 11 .

[0086] In this embodiment, the second optical coupling module 31 is implemented based on a conventional optical coupling. Figure 6 The second optical coupling module 31 can be electrically connected by three optical couplings U16-U18, three diodes D11-D13, six resistors R28-R33, and a J5 external interface. The output ends of the three optical couplings U16-U18 are respectively connected to the second input ends (IO4, IO5, IO6) of the single-chip computer 11, and the IN-FIRE, IN-QY, and IN-XL pins of the J5 external interface are respectively connected to the flame detector, the pressure switch, and the gas alarm.

[0087] In one possible implementation, Figure 3 , the status indicator light control unit 40 includes a third optical coupling module 41 and a transistor module 42;

[0088] The optical coupling input end of the third optical coupling module 41 is electrically connected to the first output end of the single chip computer 11, and the optical coupling output end thereof is electrically connected to the base of the transistor module 42;

[0089] The collector and the emitter of the transistor module 42 are used to output the first control signal according to the on and off states.

[0090] In this embodiment, the third optical coupling module 41 is implemented based on a conventional optical coupling, and the transistor module 42 can be implemented based on a conventional NPN transistor. Figure 7, the third optocoupler module 41 can be composed of eight optocouplers U8-U15 and sixteen resistors R12-R27, and the transistor module 42 can be composed of eight NPN transistors Q1-Q8 and a J4 external interface electrically connected. The input ends of the eight optocouplers U8-U15 are respectively connected to the first output end (OUT-SD, OUT-ZD, OUT-FON, OUT-FOFF, OUT-FM, OUT-GZ, OUT-QY, OUT-XL) of the single-chip computer 11. The L-SD pin of the J3 external interface is externally connected to the manual operation indicator light, and internally connected to the collector of the NPN transistor labeled Q1. The L-ZD, L-FON, L-FOFF, L-FM, L-GZ, L-QY, and L-XL pins of the J4 external interface are respectively connected to the automatic operation indicator light, ignition indicator light, flameout fault indicator light, valve status indicator light, fault alarm light, undervoltage fault indicator light, and leakage fault indicator light. The on and off of the corresponding indicator light are controlled by the conduction and cutoff of the corresponding NPN transistor.

[0091] In one possible implementation, Figure 3 , the relay output control unit 50 includes a Darlington array module 51 and a relay module 52;

[0092] The input end of the Darlington array module 51 is electrically connected to the second output end of the single chip microcomputer 11, and the output end thereof is electrically connected to the control end of the relay module 52;

[0093] The switch end of the relay module 52 is used to output a second control signal.

[0094] In this embodiment, the Darlington array module 51 is implemented based on a conventional Darlington transistor, and the relay module 52 is implemented based on a conventional relay. Figure 8 and Fig. 9, Darlington array module 51 can be composed of two Darlington tubes U19 and U20, two capacitors C10 and C11, and nine resistors R34-R42, and relay module 52 can be composed of nine relays K1-K9 and two external interfaces J6-J7 electrically connected. The input ends of the two Darlington tubes U19 and U20 are respectively connected to the second output end (OUT-FIRE, OUT-QY1, OUT-XL1, OUT-SD1, OUT-ZD1, OUT-GZ1, OUTF1, OUTF2, OUTF3) of the single-chip computer 11 through nine resistors R34-R42. K1 relay is used to control the 24V fuel valve, and K2 relay is used to control the 220V fuel valve. K1 relay and K2 relay are output at the same time. According to the voltage level of the fuel valve, the corresponding K1 relay or K2 relay control is selected. K3 relay is used to generate a feedback signal for the fuel valve to be opened, and is externally connected to the DCS control module through the YCKF pin of the J6 external interface to realize remote transmission. The K4 relay is used to generate a feedback signal for a fault, which is connected to the DCS control module through the YCGZ pin of the J6 external interface to achieve remote transmission. The K5 relay is used to generate a feedback signal for the automatic mode, which is connected to the DCS control module through the YCZD pin of the J7 external interface to achieve remote transmission. The K6 relay is used to generate a feedback signal for the manual mode, which is connected to the DCS control module through the YCSD pin of the J7 external interface to achieve remote transmission. The K7 relay is used to generate a leakage alarm signal, which is connected to the DCS control module through the YCXL pin of the J7 external interface to achieve remote transmission. The K8 relay is used to generate an undervoltage alarm signal, which is connected to the DCS control module through the YCQY pin of the J7 external interface to achieve remote transmission. The K9 relay is used to generate an output signal for ignition feedback or flameout feedback. The DCS control module uses a conventional module in the DCS system.

[0095] In one possible implementation, Figure 3 , further comprising a communication unit 70;

[0096] The communication unit 70 is disposed on the PCB 60 and is electrically connected to the single chip control unit 10 .

[0097] In this embodiment, the communication unit 70 can adopt RS485 communication module, which can be composed of TVS tube, resistor, capacitor, MAX485 integrated circuit, etc. Its main function is to transmit the logic input and output status information to the remote control center through the bus protocol for centralized management. Fig.10 The communication unit 70 may be specifically composed of a MAX485 chip labeled U3, a capacitor C9, four resistors R2-R5, three TVS tubes D5-D7, and a J2 external interface connection.

[0098] In one possible implementation, Figure 3 , further comprising a power supply unit 80;

[0099] The power supply unit 80 is arranged on the PCB printed board 60, and is electrically connected to the single-chip microcomputer control unit 10, the working mode input unit 20, the external alarm input unit 30, the status indicator light control unit 40, the relay output control unit 50, and the communication unit 70 respectively.

[0100] In this embodiment, the power supply unit 80 can be composed of a TVS tube, a self-recovering fuse, a rectifier bridge, a power inductor, a common mode inductor, a power voltage drop integrated circuit, an electrolytic capacitor, etc. Its main function is to step down 24VDC to 5VDC to supply power to each unit circuit. Fig.11 The power supply unit 80 can be specifically composed of a TVS tube labeled D1, a common-mode inductor L1, a rectifier bridge U1, a self-recovery fuse F1, a power supply voltage drop integrated circuit U2, electrolytic capacitors C1 and C2, etc., and can be adjusted according to actual needs.

[0101] The utility model also provides a flameout protection alarm joint control system, comprising a DCS control module and the flameout protection alarm joint control module as described above;

[0102] The DCS control module is electrically connected to the relay output control unit 50 in the flameout protection alarm joint control module;

[0103] The relay output control unit 50 feeds back a relay on / off signal to the DCS control module according to the relay control signal, thereby executing remote transmission of the working status and alarm information.

[0104] In this embodiment, the DCS control module adopts a module in a conventional DCS system, which can be used to receive relay control signals in the form of switch quantities, so as to remotely transmit the working status and alarm information of the flameout protection alarm joint control module to the host computer.

[0105] In a possible implementation, in the flameout protection alarm joint control system, the single-chip control unit 10 includes a single-chip computer 11;

[0106] The first input terminal of the single-chip microcomputer 11 is electrically connected to the output terminal of the working mode input unit 20, the second input terminal thereof is electrically connected to the output terminal of the external alarm input unit 30, the first output terminal thereof is electrically connected to the input terminal of the status indicator light control unit 40, and the second output terminal thereof is electrically connected to the input terminal of the relay output control unit 50;

[0107] The input end of the working mode input unit 20 is used to receive the working mode signal;

[0108] The input end of the external alarm input unit 30 is used to receive the external alarm signal;

[0109] The output end of the status indicator light control unit 40 is used to output a first control signal to perform working status indication and alarm information indication actions;

[0110] The output terminal of the relay output control unit 50 is used to output a second control signal to execute the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information.

[0111] The above embodiments should not limit the present invention in any way, and any technical solutions obtained by equivalent replacement or equivalent conversion shall fall within the protection scope of the present invention.

Claims

1. A flameout protection alarm joint control module, characterized in that: It includes a single chip microcomputer control unit, a working mode input unit, an external alarm input unit, a status indicator light control unit, and a relay output control unit; The single-chip microcomputer control unit, the working mode input unit, the external alarm input unit, the status indicator light control unit, and the relay output control unit are collectively arranged on the same PCB printed board; The single chip control unit is electrically connected to the working mode input unit, the external alarm input unit, the status indicator light control unit, and the relay output control unit respectively; Wherein, the working mode input unit is used to receive the working mode signal representing the state of the mode conversion switch and transmit it to the single chip control unit; The external alarm input unit is used to receive an external alarm signal and transmit it to the single chip control unit; The single-chip control unit generates a status indicator light control signal according to the working mode signal and the external alarm signal and transmits the signal to the status indicator light control unit, and generates a relay control signal and transmits the signal to the relay output control unit; The status indicator light control unit performs working status indication and alarm information indication actions according to the status indicator light control signal; The relay output control unit executes the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information according to the relay control signal.

2. The flameout protection alarm joint control module according to claim 1 is characterized in that: The single-chip microcomputer control unit comprises a single-chip microcomputer; The first input end of the single-chip microcomputer is electrically connected to the output end of the working mode input unit, the second input end thereof is electrically connected to the output end of the external alarm input unit, the first output end thereof is electrically connected to the input end of the status indicator light control unit, and the second output end thereof is electrically connected to the input end of the relay output control unit; The input end of the working mode input unit is used to receive the working mode signal; The input end of the external alarm input unit is used to receive the external alarm signal; The output end of the status indicator light control unit is used to output a first control signal to perform working status indication and alarm information indication actions; The output end of the relay output control unit is used to output a second control signal to execute the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information.

3. The flameout protection alarm joint control module according to claim 2 is characterized in that: The working mode input unit includes a first optical coupling module; The optocoupler input end of the first optocoupler module is used to receive the working mode signal, and the optocoupler output end thereof is electrically connected to the first input end of the single chip microcomputer.

4. The flameout protection alarm joint control module according to claim 2, characterized in that: The external alarm input unit includes a second optical coupling module; The optocoupler input terminal of the second optocoupler module is used to receive the external alarm signal, and the optocoupler output terminal thereof is electrically connected to the second input terminal of the single chip microcomputer.

5. The flameout protection alarm joint control module according to claim 2, characterized in that: The status indicator light control unit includes a third optical coupler module and a triode module; The optocoupler input end of the third optocoupler module is electrically connected to the first output end of the single chip microcomputer, and the optocoupler output end thereof is electrically connected to the base of the transistor module; The collector and the emitter of the transistor module are used to output the first control signal according to the on and off states.

6. The flameout protection alarm joint control module according to claim 2, characterized in that: The relay output control unit includes a Darlington array module and a relay module; The input end of the Darlington array module is electrically connected to the second output end of the single chip microcomputer, and the output end thereof is electrically connected to the control end of the relay module; The switch end of the relay module is used to output a second control signal.

7. The flameout protection alarm joint control module according to claim 1, characterized in that: Also includes a communication unit; The communication unit is arranged on the PCB printed board and is electrically connected to the single chip microcomputer control unit.

8. The flameout protection alarm joint control module according to claim 7, characterized in that: Also includes a power supply unit; The power supply unit is arranged on the PCB printed board, and is electrically connected to the single-chip microcomputer control unit, the working mode input unit, the external alarm input unit, the status indicator light control unit, the relay output control unit, and the communication unit respectively.

9. A flameout protection alarm joint control system, characterized in that: It comprises a DCS control module and a flameout protection alarm joint control module as claimed in claim 1; The DCS control module is electrically connected to the relay output control unit in the flameout protection alarm joint control module; The relay output control unit feeds back a relay on / off signal to the DCS control module according to the relay control signal, thereby executing remote transmission of the working status and alarm information.

10. The flameout protection alarm joint control system according to claim 9, characterized in that: The single-chip microcomputer control unit comprises a single-chip microcomputer; The first input end of the single-chip microcomputer is electrically connected to the output end of the working mode input unit, the second input end thereof is electrically connected to the output end of the external alarm input unit, the first output end thereof is electrically connected to the input end of the status indicator light control unit, and the second output end thereof is electrically connected to the input end of the relay output control unit; The input end of the working mode input unit is used to receive the working mode signal; The input end of the external alarm input unit is used to receive the external alarm signal; The output end of the status indicator light control unit is used to output a first control signal to perform working status indication and alarm information indication actions; The output end of the relay output control unit is used to output a second control signal to execute the remote transmission of the opening and closing of the fuel valve, the working status and the alarm information.

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