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CN-121977226-A - Small fire standby energy-saving burner based on three-pin ignition and UV detection

CN121977226ACN 121977226 ACN121977226 ACN 121977226ACN-121977226-A

Abstract

The invention discloses a small fire standby energy-saving burner based on three-needle ignition and UV detection, which relates to the technical field of gas combustion equipment, in particular to a small fire standby energy-saving burner based on three-needle ignition and UV detection. The three-needle ignition electrode is arranged at the head end and the tail end of the linear fire grate and corresponds to the mixed gas outlet, and the UV flame detector covers the fire grate combustion area. The gas supply assembly comprises a gas valve and is controlled to accurately adjust the gas quantity. And a workpiece detection assembly (such as a photoelectric element) is arranged, a workpiece state transmission control module is detected, and the working condition switching is triggered. The three-needle electrode has the functions of ignition and detection. And an alarm module is arranged, abnormal warning such as fire cutoff is carried out, and the control module synchronously reduces the supply or cuts off the gas aggregation prevention. The control module is internally provided with a small fire standby logic, and the control module is provided with a safety protection logic when no workpiece is in a fire discharging small fire standby state.

Inventors

  • Yue Huiliang

Assignees

  • 岳会良

Dates

Publication Date
20260505
Application Date
20260311

Claims (10)

  1. 1. The small fire standby energy-saving burner based on three-needle ignition and UV detection is characterized by comprising a linear fire row, an ignition assembly, a flame detection assembly, a control module and a fuel gas supply assembly, wherein the ignition assembly is a three-needle ignition electrode, the three-needle ignition electrode is correspondingly arranged at the head end and the tail end of the linear fire row, the UV flame detector is correspondingly arranged in a combustion area of the linear fire row, the control module is respectively in control connection with the ignition assembly, the flame detection assembly and the fuel gas supply assembly, and the fuel gas supply assembly is adapted to the small fire combustion and the large fire combustion conditions of the linear fire row to realize fuel gas supply, so that the energy-saving combustion structure for small fire standby and large fire starting is integrally formed.
  2. 2. The small-fire standby energy-saving burner based on three-needle ignition and UV detection according to claim 1, wherein at least one group of three-needle ignition electrodes are respectively arranged at the head end and the tail end of the linear fire row, the arrangement position of each group of three-needle ignition electrodes corresponds to a mixed gas outlet of the linear fire row, and rapid ignition of mixed gas is adapted.
  3. 3. The small-fire standby energy-saving burner based on three-needle ignition and UV detection according to claim 1, wherein the flame detection component is a UV flame detector, a detection probe of the UV flame detector faces a flame combustion surface of a linear fire row, a detection range covers an integral combustion area of the linear fire row, and the combustion state of flame can be accurately detected and detection signals can be transmitted to the control module.
  4. 4. The small fire standby energy-saving burner based on three-needle ignition and UV detection according to claim 1, wherein the gas supply assembly comprises a gas conveying main path, a gas conveying branch path and a gas valve, wherein the gas valve is arranged on the gas conveying main path and the gas conveying branch path and is electrically connected with a control module, the control module can realize accurate regulation and control of gas supply quantity by adjusting the opening degree of the gas valve, and the gas conveying branch path is used for stably supplying a small amount of gas to a linear fire row and maintaining a small fire combustion standby state.
  5. 5. The small fire standby energy-saving burner based on three-needle ignition and UV detection according to claim 1, further comprising a workpiece detection assembly, wherein the workpiece detection assembly is electrically connected with the control module, and can detect the existence state of a workpiece to be thermally processed and transmit a workpiece detection signal to the control module in real time to serve as a triggering basis for the control module to switch combustion working conditions.
  6. 6. The small fire standby energy-saving burner based on three-needle ignition and UV detection according to claim 5, wherein the workpiece detection component is a photoelectric detection element, and the photoelectric detection element is arranged on the workpiece conveying side of the linear fire row to be processed, can rapidly identify whether a workpiece is in place or not, and generates a corresponding electric signal to be transmitted to the control module.
  7. 7. The small fire standby energy-saving burner based on three-needle ignition and UV detection according to claim 2, wherein the three-needle ignition electrode has dual functions of ignition and flame detection, performs a mixed gas ignition operation in an ignition stage, and is switched to a flame detection early warning mode after a large fire combustion working condition is started, and the fire row combustion state of the end where the three-needle ignition electrode is positioned is detected in real time and fed back to the control module.
  8. 8. The small fire standby energy-saving burner based on three-needle ignition and UV detection as set forth in claim 7, further comprising an alarm module electrically connected with the control module, wherein when the control module receives a fire-discharging and incomplete-combustion signal transmitted by the three-needle ignition electrode or the UV flame detector, the control module triggers the alarm module to send out a fire-breaking warning signal.
  9. 9. The three-pin ignition and UV detection-based small fire standby energy-saving burner of claim 5, wherein the control module is internally provided with small fire standby control logic, when the workpiece detection component does not detect a workpiece, the control module controls a gas valve on a gas conveying main path to be closed, the gas valve on a gas conveying branch path is kept open, and a linear fire row maintains a small fire combustion standby state.
  10. 10. The small fire standby energy-saving burner based on three-needle ignition and UV detection as set forth in claim 8, wherein the control module is further provided with safety protection logic, and the control module can control the gas supply assembly to reduce the gas supply amount or directly cut off the gas conveying main path according to the fire-breaking detection signal while triggering the alarm module to send out the warning signal, so as to prevent the unburned gas mixture from gathering around the fire grate.

Description

Small fire standby energy-saving burner based on three-pin ignition and UV detection Technical Field The invention relates to the technical field of gas combustion equipment, in particular to a small-fire standby energy-saving burner based on three-needle ignition and UV detection. Background In the fields of industrial heat treatment, metal forging, glass annealing, large commercial kitchens, etc., burners are often used for continuous or intermittent heating of workpieces or materials. Conventional burners often employ a single power output mode, i.e., a higher fire combustion is maintained between standby and production, or a longer time is required to heat the fire grate from a cold state to a steady combustion state at start-up. The operation mode has obvious defects that on one hand, when no workpiece is heated, a large amount of fuel gas is wasted, the operation cost is increased and the carbon emission is increased due to the fact that the combustion of the large fire is maintained, and on the other hand, ignition delay and poor flame stability are caused by frequent starting and stopping of the large fire, and even the risk of fuel gas leakage is caused by ignition failure. To solve the above problems, some prior arts have attempted to introduce a "light fire standby" concept, i.e., to reduce the fuel gas supply during standby, maintain low power combustion of the fire grate, and switch to a heavy fire when there is a workpiece. However, the scheme has the defects that firstly, a single-needle or double-needle spark plug is adopted in an ignition system, the ignition coverage is limited, the phenomenon of asynchronous first and last ignition and partial flameout easily occurs to a linear flame row (especially a strip-shaped multi-flame hole layout), the small flame state is unstable, secondly, flame detection depends on a single thermocouple or an ion induction needle, the response speed is low, the high-temperature interference easily occurs, the integral combustion state of the long flame row is difficult to accurately judge, weak flame is easily misjudged to be extinguished particularly under the small flame working condition, unnecessary shutdown or alarm is triggered, thirdly, linkage control with the workpiece state is lacked, the working condition is often required to be manually interfered, the degree of automation is low, and the requirement of continuous and intelligent modern production lines cannot be met. Furthermore, the safety protection of existing burners relies on simple flameout protection, where only the gas is cut off when a misfire is detected, but the potential risk of the initial stage of the misfire is not considered-for example, incompletely combusted gas mixture may accumulate around the fire grate, and a subsequent ignition spark may initiate detonation. Meanwhile, due to the design of separating the traditional ignition and detection functions, the number of electrodes and the control complexity are increased, and the miniaturization and maintenance convenience of equipment are not facilitated. Therefore, an energy-saving burner capable of realizing uniform ignition and accurate flame monitoring of linear fire bars and automatically switching small fire standby and high-power combustion modes according to workpiece states is needed, so that the problem of short plates of traditional equipment in the aspects of energy efficiency, safety and intelligence is solved. Disclosure of Invention The invention aims to provide a small fire standby energy-saving burner based on three-pin ignition and UV detection, which is used for realizing small fire standby energy saving without a workpiece and fast switching of big fire with the workpiece by combining a workpiece detection and intelligent control module through cooperation of the three-pin ignition and the UV detection, and improving flame state monitoring reliability and safety protection capability. The low-power standby energy-saving burner comprises a linear fire bar, an ignition assembly, a flame detection assembly, a control module and a gas supply assembly, wherein the ignition assembly is a three-needle ignition electrode, the three-needle ignition electrode is correspondingly arranged at the front end and the rear end of the linear fire bar so as to form a fire source point for synchronous ignition at the two ends of the fire bar, the UV flame detector is arranged corresponding to a combustion area of the linear fire bar and is used for directly monitoring the spectral characteristics of flame to judge the combustion state, the control module is respectively connected with the ignition assembly, the flame detection assembly and the gas supply assembly to receive state signals of all the assemblies and output control instructions, the gas supply assembly is adapted to the low-power combustion and high-power combustion working conditions of the linear fire bar to realize gas supply, the gas valve can be controlled to be