Intrinsic safety high-energy all-weather ignition device
By monitoring data through thermocouples and pressure transmitters and combining it with a PLC controller to achieve automated ignition, the reliability and safety issues of the petrochemical continuous lamp ignition system have been solved, ensuring stable combustion and efficient operation of the continuous lamp under extreme conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-17
AI Technical Summary
The existing ignition systems for petrochemical plant lamps have poor ignition capabilities and low safety performance. They are prone to extinguishing after prolonged operation, leading to safety hazards and environmental problems.
Thermocouples are used to monitor flame temperature in real time, and pressure transmitters are used to monitor fuel gas pressure. The PLC controller performs intelligent analysis, automatically adjusts the fuel supply, and triggers the igniter to ignite or reignite, thus achieving closed-loop control. Intrinsically safe isolation barriers are used for signal isolation and amplification.
It improves the reliability and safety of the ignition system, avoids the risk of flameout, optimizes fuel utilization, reduces the risk of human error, improves operation and maintenance efficiency and system anti-interference ability, and extends equipment life.
Smart Images
Figure CN224003755U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of tail gas treatment technology in the petrochemical industry, specifically an intrinsically safe high-energy all-weather ignition device. Background Technology
[0002] Petrochemical continuous lighting, also known as safety warning lights or explosion-proof lights, is a special lighting device widely used in flammable and explosive environments such as petrochemical plants. Its main function is to provide continuous and reliable lighting in normal or emergency situations, ensuring safe evacuation of personnel and safe operation of equipment. Continuous lighting typically employs an explosion-proof design with a robust outer shell, effectively preventing external explosions caused by ignition sources such as sparks, electric arcs, and high temperatures. It also possesses excellent waterproof and dustproof properties, adapting to harsh industrial environments. In petrochemical production, continuous lighting plays a crucial role in preventing accidents, reducing losses, and protecting personnel lives, making it an indispensable piece of equipment for safe production in petrochemical enterprises. The ignition system of a petrochemical continuous lighting lamp is one of its key components, responsible for reliably igniting the lamp when needed, ensuring continuous illumination and fulfilling its safety warning function. This ignition system is typically designed to be efficient, safe, and easy to maintain. Its core components include ignition electrodes, a high-voltage generator, and control circuitry. The ignition electrodes are usually installed inside the lamp and are responsible for generating an electric spark to ignite the flammable gas inside the lamp.
[0003] However, the mainstream ignition systems currently available all have unavoidable drawbacks, such as poor ignition capability, low safety performance, and difficulty in detecting when the lamp is not lit. Therefore, they can create unobservable safety hazards during use, and after long-term operation, they cannot meet environmental protection requirements and are prone to safety accidents. Utility Model Content
[0004] The purpose of this application is to provide an intrinsically safe, high-energy, all-weather ignition device in order to solve the problems mentioned above.
[0005] The technical solution adopted in this application is as follows: an intrinsically safe high-energy all-weather ignition device, comprising: a continuous lamp, a control valve, an igniter, a thermocouple, a pressure transmitter, a first safety barrier, a second safety barrier, a PLC controller, and a digital display instrument;
[0006] The signal output terminal of the thermocouple is connected to the signal input terminal of the first safety barrier, and the signal output terminal of the first safety barrier is connected to the signal input terminal of the PLC controller.
[0007] The signal output terminal of the pressure transmitter is connected to the signal input terminal of the second safety barrier, and the signal output terminal of the second safety barrier is connected to the signal input terminal of the PLC controller.
[0008] The input terminal of the control valve is connected to the signal output terminal of the PLC controller;
[0009] The input terminal of the igniter is connected to the signal output terminal of the PLC controller.
[0010] In a preferred embodiment, the digital display instrument is embedded in the control cabinet panel and is used to display the temperature and pressure data of the continuous light in real time.
[0011] In a preferred embodiment, the signal output terminal of the PLC controller is connected to the signal input terminal of the digital display instrument, for synchronously transmitting the processed temperature and pressure data to the digital display instrument.
[0012] In a preferred embodiment, the continuous light is connected to a control valve via a fuel line, the control valve being used to adjust the fuel supply according to instructions from the PLC controller.
[0013] In a preferred embodiment, the continuous light is arranged adjacent to the igniter, which is used to automatically ignite the continuous light under the instruction of the PLC controller.
[0014] In a preferred embodiment, the thermocouple is fixed to the flame monitoring area of the lamp to collect the temperature signal of the lamp in real time.
[0015] In a preferred embodiment, the first safety barrier and the second safety barrier are intrinsically safe isolation barriers used to isolate interference and amplify the signals from the thermocouple and pressure transmitter.
[0016] In a preferred embodiment, the control valve is installed on the fuel line connected to the night lamp and forms a closed-loop control circuit with the PLC controller to maintain the stable combustion state of the night lamp.
[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:
[0018] 1. In this application, by using thermocouples placed near the pilot light to collect flame temperature data in real time, and combining this with continuous monitoring of fuel gas pressure by a pressure transmitter, the system can transmit multi-dimensional parameters to a PLC controller for intelligent analysis in real time. Based on the dynamic data, the PLC controller precisely adjusts the fuel supply of the control valve and automatically triggers the igniter to complete ignition or reignition operations, completely replacing the traditional manual ignition method. This automation mechanism not only significantly reduces the risk of human error but also ensures the continuous and stable combustion of the pilot light under extreme weather or complex operating conditions, effectively avoiding exhaust emissions or safety hazards caused by flameout. Simultaneously, the system optimizes fuel utilization through closed-loop control, reducing energy waste and achieving both high safety and environmental benefits.
[0019] 2. In this application, the PLC controller synchronously transmits the processed temperature and pressure data to a digital display instrument embedded in the control cabinet panel, achieving simultaneous dynamic display of two parameters of the continuous-on lamp's operating status. Operators can monitor the precise values of flame temperature and fuel pressure in real time through an intuitive digital interface, without relying on complex data analysis or additional testing equipment. This visual monitoring mode significantly improves operational efficiency, enabling rapid identification and response to abnormal states, thereby shortening troubleshooting time, ensuring efficient 24 / 7 system operation, and providing reliable support for remote monitoring and data recording.
[0020] 3. In this application, the raw signals output by the thermocouples and pressure transmitters are conditioned and isolated from interference using intrinsically safe isolation barriers. This includes filtering electromagnetic noise, suppressing surge voltage, and eliminating grounding loop interference, ensuring the purity and stability of the signals transmitted to the PLC controller. The bidirectional isolation function of the safety barrier not only prevents hazardous energy from entering the control cabinet but also prevents damage to the PLC controller due to signal abnormalities. This multi-layered protection design significantly improves the system's anti-interference capability and electrical safety, extends the service life of core control equipment, and guarantees the intrinsic safety performance of the entire ignition system in flammable and explosive environments from a hardware perspective. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the control principle of this application.
[0022] The markings in the diagram are: 1. Night light; 2. Control valve; 3. Ignition device; 4. Thermocouple; 5. Pressure transmitter; 6. First safety barrier; 7. Second safety barrier; 8. PLC controller; 9. Digital display instrument. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] Example:
[0025] Reference Figure 1 An intrinsically safe, high-energy, all-weather ignition device includes: a continuous lamp 1, a control valve 2, an igniter 3, a thermocouple 4, a pressure transmitter 5, a first safety barrier 6, a second safety barrier 7, a PLC controller 8, and a digital display instrument 9.
[0026] The signal output terminal of thermocouple 4 is connected to the signal input terminal of the first safety barrier 6, and the signal output terminal of the first safety barrier 6 is connected to the signal input terminal of the PLC controller 8.
[0027] The signal output terminal of pressure transmitter 5 is connected to the signal input terminal of second safety barrier 7, and the signal output terminal of second safety barrier 7 is connected to the signal input terminal of PLC controller 8.
[0028] The input terminal of control valve 2 is connected to the signal output terminal of PLC controller 8;
[0029] The input terminal of igniter 3 is connected to the signal output terminal of PLC controller 8.
[0030] The digital display instrument 9 is embedded in the control cabinet panel and is used to display the temperature and pressure data of the constant light 1 in real time.
[0031] The signal output terminal of the PLC controller 8 is connected to the signal input terminal of the digital display instrument 9, which is used to synchronously transmit the processed temperature and pressure data to the digital display instrument 9.
[0032] The continuous light 1 is connected to the control valve 2 via a fuel line. The control valve 2 is used to adjust the fuel supply according to the instructions of the PLC controller 8.
[0033] The constant light 1 is arranged next to the igniter 3. The igniter 3 is used to automatically ignite the constant light 1 under the instruction of the PLC controller 8.
[0034] Thermocouple 4 is fixed to the flame monitoring area of the continuous lamp 1 to collect the temperature signal of the continuous lamp 1 in real time.
[0035] The first safety barrier 6 and the second safety barrier 7 are intrinsically safe isolation barriers used to isolate interference and amplify the signals from the thermocouple 4 and the pressure transmitter 5.
[0036] Control valve 2 is installed on the fuel line connected to the constant light 1 and forms a closed-loop control circuit with PLC controller 8 to maintain the stable combustion state of constant light 1.
[0037] The aforementioned PLC controller and safety barrier are installed in the control cabinet. The digital display instrument is embedded in the control cabinet. The pressure transmitter and thermocouple are located near the continuous light at the monitoring site. The igniter is located near the continuous light at the site. The control valve is located on the fuel gas pipeline connected to the continuous light. The pressure transmitter, thermocouple, igniter, and thermocouple are respectively connected to the corresponding safety barrier and PLC controller in the control cabinet through cables. Finally, the data is collected and processed by the PLC controller.
[0038] From the above, we can conclude that:
[0039] In this application, a thermocouple placed near the pilot light collects flame temperature data in real time, and a pressure transmitter continuously monitors fuel gas pressure. The system can then transmit multi-dimensional parameters to a PLC controller for intelligent analysis. Based on this dynamic data, the PLC controller precisely adjusts the fuel supply to the control valve and automatically triggers the igniter to complete ignition or reignition operations, completely replacing the traditional manual ignition method. This automation mechanism not only significantly reduces the risk of human error but also ensures the continuous and stable combustion of the pilot light under extreme weather or complex operating conditions, effectively avoiding exhaust emissions or safety hazards caused by flameout. Simultaneously, the system optimizes fuel utilization through closed-loop control, reducing energy waste and achieving both high safety and environmental benefits.
[0040] In this application, the PLC controller synchronously transmits the processed temperature and pressure data to a digital display instrument embedded in the control cabinet panel, enabling simultaneous dynamic display of two parameters of the continuous-on lamp's operating status. Operators can monitor the precise values of flame temperature and fuel pressure in real time through an intuitive digital interface, without relying on complex data analysis or additional testing equipment. This visual monitoring mode significantly improves operational efficiency, enabling rapid identification and response to abnormal states, thereby shortening troubleshooting time, ensuring efficient 24 / 7 system operation, and providing reliable support for remote monitoring and data recording.
[0041] In this application, the raw signals output by the thermocouples and pressure transmitters are conditioned and isolated from interference using intrinsically safe isolation barriers. This includes filtering electromagnetic noise, suppressing surge voltage, and eliminating grounding loop interference, ensuring a clean and stable signal transmitted to the PLC controller. The bidirectional isolation function of the safety barrier not only prevents hazardous energy from entering the control cabinet but also prevents damage to the PLC controller due to signal abnormalities. This multi-layered protection design significantly improves the system's anti-interference capability and electrical safety, extends the service life of core control equipment, and guarantees the intrinsic safety performance of the entire ignition system in flammable and explosive environments from a hardware perspective.
[0042] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. An intrinsically safe high-energy all-weather ignition device, characterized by: The utility model relates to a kind of safety control system of long-lasting light, including: Long-lasting light (1), control valve (2), igniter (3), thermocouple (4), pressure transmitter (5), first safety barrier (6), second safety barrier (7), PLC controller (8) and digital display instrument (9); The signal output end of the thermocouple (4) is connected with the signal input end of the first safety barrier (6), and the signal output end of the first safety barrier (6) is connected with the signal input end of the PLC controller (8), The signal output end of the pressure transmitter (5) is connected with the signal input end of the second safety barrier (7), and the signal output end of the second safety barrier (7) is connected with the signal input end of the PLC controller (8), The input end of the control valve (2) is connected with the signal output end of the PLC controller (8). The input end of the igniter (3) is connected with the signal output end of the PLC controller (8).
2. The intrinsically safe high-energy all-weather ignition device according to claim 1, characterized in that: The digital display instrument (9) is embedded on the panel of the control cabinet.
3. The intrinsically safe high-energy all-weather ignition device of claim 1, wherein: The signal output end of the PLC controller (8) is connected with the signal input end of the digital display instrument (9).
4. The intrinsically safe high-energy all-weather ignition device of claim 1, wherein: The long-lasting light (1) is connected with the control valve (2) through fuel pipeline.
5. The intrinsically safe high-energy all-weather ignition device of claim 1, wherein: The long-lasting light (1) is arranged adjacent to the igniter (3).
6. The intrinsically safe high-energy always on ignition device of claim 1, wherein: The thermocouple (4) is fixed in the flame monitoring area of the long-lasting light (1).
7. The intrinsically safe high-energy all-weather ignition device of claim 1, wherein: The first safety barrier (6) and the second safety barrier (7) are intrinsically safe isolation barriers.
8. The intrinsically safe high-energy all-weather ignition device of claim 1, wherein: The control valve (2) is installed on the fuel pipeline connected with the long-lasting light (1), and forms a closed-loop control circuit with the PLC controller (8).