CN113341911B - Fault diagnosis method and device for self-preheating type burner - Google Patents
Fault diagnosis method and device for self-preheating type burner Download PDFInfo
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- CN113341911B CN113341911B CN202110514944.0A CN202110514944A CN113341911B CN 113341911 B CN113341911 B CN 113341911B CN 202110514944 A CN202110514944 A CN 202110514944A CN 113341911 B CN113341911 B CN 113341911B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
Abstract
The invention relates to the technical field of metallurgical annealing, in particular to a fault diagnosis method and a fault diagnosis device for a self-preheating type burner, wherein the method comprises the steps of starting a self-checking program of the self-preheating type burner after a gas hand valve is closed; acquiring a flame abnormal fault state, a gas electromagnetic valve fault state, a fuse fault state and an ignition time fault state according to a self-checking program; according to the abnormal flame fault state, performing fault diagnosis by adopting a flame fault detection mode corresponding to the abnormal flame fault state; according to the fault state of the gas electromagnetic valve, fault diagnosis is carried out by adopting a gas electromagnetic valve fault detection mode corresponding to the fault state of the gas electromagnetic valve; according to the fault state of the fuse, adopting a fuse fault detection mode corresponding to the fault state of the fuse to carry out fault diagnosis; and according to the ignition time fault state, performing fault diagnosis by adopting an ignition time fault detection mode corresponding to the ignition time fault state. The method can accurately and quickly detect the faults of the self preheating type burner.
Description
Technical Field
The invention relates to the technical field of metallurgical annealing, in particular to a fault diagnosis method and device for a self-preheating burner.
Background
The annealing furnace is indispensable technological equipment for a continuous hot galvanizing production line and is mainly used for carrying out heat treatment on hot galvanizing products. The burner is a key device for controlling the temperature of the annealing furnace, and the heating capacity of the annealing furnace is directly influenced by the quality of the running state of the burner, so that the production line capacity and the product quality are greatly influenced. Usually, the burner adopts self-preheating type burner, and when the self-preheating type burner can not work normally, the self-preheating type burner needs to be subjected to fault detection.
However, the judgment of the fault generated by the self-preheating burner is obtained through the working experience of the worker, and the fault judgment of the self-preheating burner is incorrect, so that a new fault of the self-preheating burner can be caused, and even the self-preheating burner is damaged.
Disclosure of Invention
The embodiment of the application provides a method and a device for diagnosing faults of a self-preheating type burner, solves the technical problem that faults of the self-preheating type burner cannot be accurately and quickly detected in the prior art, and realizes accurate and quick detection of the faults of the self-preheating type burner, so that the self-preheating type burner is accurately repaired, and the technical effect of improving the working efficiency of the self-preheating type burner is improved.
In a first aspect, an embodiment of the present invention provides a method for diagnosing a fault of a self-preheating burner, including:
after a gas hand valve is closed, starting a self-checking program of a self-preheating type burner, wherein the gas hand valve is arranged on a gas pipeline of the self-preheating type burner;
acquiring a flame abnormal fault state, a gas electromagnetic valve fault state, a fuse fault state and an ignition time fault state according to the self-checking program;
according to the flame abnormal fault state, performing fault diagnosis by adopting a flame fault detection mode corresponding to the flame abnormal fault state; according to the fault state of the gas electromagnetic valve, fault diagnosis is carried out by adopting a gas electromagnetic valve fault detection mode corresponding to the fault state of the gas electromagnetic valve; according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis; and according to the ignition time fault state, performing fault diagnosis by adopting an ignition time fault detection mode corresponding to the ignition time fault state.
Preferably, the performing fault diagnosis by using a flame fault detection method corresponding to the flame abnormal fault state according to the flame abnormal fault state includes:
starting a manual ignition mode according to the abnormal flame fault state;
if the manual ignition mode can be started, entering a manual ignition test program;
and if the manual ignition mode cannot be started, determining that the controller of the self preheating type burner has a fault.
Preferably, after entering the manual ignition test program, the method further includes:
if the fact that the air electromagnetic valve and the gas electromagnetic valve are both switched on and off is detected, the gas manual valve is opened, and manual ignition operation is conducted, wherein the air electromagnetic valve is arranged on an air pipeline of the self-preheating type burner, and the gas electromagnetic valve is arranged on a gas pipeline of the self-preheating type burner;
if the air electromagnetic valve is detected to have no switching action, determining that the air electromagnetic valve has a fault;
and if the gas electromagnetic valve is detected to have no switching action, determining that the gas electromagnetic valve has a fault.
Preferably, after the manual ignition operation is performed, the method further comprises:
if the self-preheating type burner is detected to have flame, judging whether the loop current value of the self-preheating type burner can be obtained or not, and detecting a setting device of the self-preheating type burner according to a judgment result, wherein the setting device comprises a joint of an electrode cap of the self-preheating type burner and a high-voltage wire and an ignition transformer of the self-preheating type burner;
and if the self-preheating type burner is detected to have no flame, determining that the electrode of the self-preheating type burner has a fault.
Preferably, the determining whether the loop current value of the self-preheating burner can be obtained includes:
if the loop current value can be obtained, detecting the numerical value jumping amplitude of the loop current value;
and if the loop current value cannot be acquired, determining that the fault exists at the joint of the electrode cap of the self-preheating type burner and the high-voltage wire or the ignition transformer of the self-preheating type burner.
Preferably, the detecting whether the loop current value has a value jitter includes:
if the numerical value jumping amplitude is detected not to be within the jumping threshold range, the opening degrees of an air hand valve and a gas hand valve are adjusted until the numerical value jumping amplitude is within the jumping threshold range, wherein the air hand valve is arranged on an air pipeline of the self-preheating type burner;
and if the numerical value jumping amplitude is detected to be within the jumping threshold range, normally starting the self preheating type burner.
Preferably, the fault diagnosis is performed by adopting a fault detection mode of the gas solenoid valve corresponding to the fault state of the gas solenoid valve according to the fault state of the gas solenoid valve, and includes:
determining that the gas electromagnetic valve of the self-preheating burner has a fault in a gas electromagnetic valve fault detection mode;
and according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis, wherein the fault diagnosis comprises the following steps:
determining that the controller of the self-preheating burner has a fault in a fuse fault detection mode;
and according to the ignition time fault state, adopting an ignition time fault detection mode corresponding to the ignition time fault state to carry out fault diagnosis, wherein the fault diagnosis comprises the following steps:
and resetting the self-preheating type burner in an ignition time fault detection mode, and restarting the self-preheating type burner.
Based on the same inventive concept, in a second aspect, the present invention further provides a failure diagnosis apparatus for a self-preheating burner, including:
the starting module is used for starting a self-checking program of the self-preheating type burner after a gas hand valve is closed, wherein the gas hand valve is arranged on a gas pipeline of the self-preheating type burner;
the acquisition module is used for acquiring a flame abnormal fault state, a gas electromagnetic valve fault state, a fuse fault state and an ignition time fault state according to the detection program;
the diagnosis module is used for carrying out fault diagnosis by adopting a flame fault detection mode corresponding to the flame abnormal fault state according to the flame abnormal fault state; according to the fault state of the gas electromagnetic valve, fault diagnosis is carried out by adopting a gas electromagnetic valve fault detection mode corresponding to the fault state of the gas electromagnetic valve; according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis; and according to the ignition time fault state, performing fault diagnosis by adopting an ignition time fault detection mode corresponding to the ignition time fault state.
Based on the same inventive concept, in a third aspect, the invention provides a computer device, which includes a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of the method for diagnosing the failure of the self-preheating type burner when executing the program.
Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for diagnosing a malfunction of a self-preheating burner.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
according to the fault diagnosis method, the gas hand valve is closed, the self-checking program is started, and therefore whether the controller of the self-preheating burner has a fault or not is judged. And then, obtaining results of the flame abnormal fault state, the gas electromagnetic valve fault state, the fuse fault state and the ignition time fault state according to the self-checking program. And then, fault diagnosis is carried out on different fault states by adopting detection modes corresponding to the different fault states, so that the process and systematic fault detection is carried out on the self preheating type burner, the fault types of the self preheating type burner are refined, the self preheating type burner is repaired correspondingly according to the different fault types, the repairing efficiency is improved, and the fault finding time is saved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Moreover, in the drawings, like reference numerals are used to refer to like elements throughout. In the drawings:
FIG. 1 is a schematic flow chart illustrating steps of a fault diagnosis method for a self-preheating burner in an embodiment of the invention;
FIG. 2 is a schematic sectional view of a self-preheating burner according to an embodiment of the present invention;
FIG. 3 shows a block schematic diagram of a fault diagnosis device for a self-preheating burner in an embodiment of the invention;
fig. 4 shows a schematic structural diagram of a computer device in the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
The first embodiment of the invention provides a fault diagnosis method for a self-preheating type burner, which is a fault diagnosis method for the self-preheating type burner. Therefore, the structure of the self-preheating burner is described first. As shown in fig. 2, the self-preheating burner includes: electrode 201, electrode cap 202, high voltage lead 203, flue gas conduit 204, heat exchanger 205, air conduit 206, burner core 207 and ignition transformer (not shown in fig. 2). The air conduit 206 is similar to a circular ring and wraps the burner core 207; one end of the burner core 207 is connected with the electrode cap 202, and the other end is connected with the heat exchanger 205; the electrode is connected with one end of the electrode cap 202 and arranged on the burner core 207; the high-voltage lead 203 is connected with the other end of the electrode cap 202; the ignition transformer is connected with the electrode 201; the flue gas conduit 204 is arranged at the outermost layer of the self-preheating burner. The burner core 207 includes: a gas conduit 208, a mixing device 209 and a combustion chamber 210; the mixing device 209 is funnel-shaped, the mouth of the mixing device 209 is connected with the gas conduit 208, and the opening of the mixing device 209 is connected with the combustion chamber 210. Wherein the gas conduit 208 is used for transporting gas, the mixing device 209 is used for mixing gas and air, and the combustion chamber 210 is used for combusting gas and air.
It should be noted that the air conduit 206 is connected to the air pipe 211 of the self-preheating burner, the air solenoid valve 212 and the air hand valve 213 are disposed on the air pipe 211, and the distance from the air solenoid valve 212 to the self-preheating burner is smaller than the distance from the air hand valve 213 to the self-preheating burner. The gas conduit 208 is connected with a gas pipeline 214 of the self-preheating type burner, a gas electromagnetic valve 215 and a gas hand valve 216 are arranged on the gas pipeline 214, and the distance from the gas electromagnetic valve 215 to the self-preheating type burner is smaller than the distance from the gas hand valve 216 to the self-preheating type burner.
Usually, self-preheating burner will be connected with the controller to the operating personnel passes through the controller operation self-preheating burner, and the controller will adopt hound burner controller, or other controllers.
The working principle of the self-preheating burner is as follows:
the gas passes through a gas hand valve 216 and a gas electromagnetic valve 215 on a gas pipeline 214 in sequence and then is transmitted to the mixing device 209 through a gas guide pipe 208; at the same time, the air passes through the air hand valve 213 and the air solenoid valve 212 on the air pipe 211, and then passes through the air pipe 206 to the mixing device 209. After the air and the gas are mixed in the mixing device 209, the high-voltage spark generated by the electrode 201 is ignited and burned in the combustion chamber 210. The combustion of the gas produces a temperature-increased flue gas that exchanges heat with air entering the mixing device 209. After heat exchange, air with an increased temperature and flue gas with a decreased temperature are generated, the flue gas with a decreased temperature is discharged through the flue gas duct 204, and the air with an increased temperature is transmitted to the mixing device 209.
After the structure and the principle of the self-preheating type burner are known, a fault diagnosis method of the self-preheating type burner is described in detail. As shown in fig. 1, the method includes:
s101, after a gas hand valve 216 is closed, starting a self-checking program of the self-preheating type burner, wherein the gas hand valve 216 is arranged on a gas pipeline 214 of the self-preheating type burner;
s102, acquiring a flame abnormal fault state, a gas electromagnetic valve fault state, a fuse fault state and an ignition time fault state according to a self-checking program;
s103, performing fault diagnosis by adopting a flame fault detection mode corresponding to the flame abnormal fault state according to the flame abnormal fault state;
s104, performing fault diagnosis by adopting a fault detection mode of the gas electromagnetic valve corresponding to the fault state of the gas electromagnetic valve according to the fault state of the gas electromagnetic valve;
s105, according to the fault state of the fuse, adopting a fuse fault detection mode corresponding to the fault state of the fuse to carry out fault diagnosis;
and S106, according to the ignition time fault state, adopting an ignition time fault detection mode corresponding to the ignition time fault state to carry out fault diagnosis.
The fault diagnosis method of the embodiment carries out flow and systematic fault detection on the self-preheating type burner, refines the fault types of the self-preheating type burner, carries out corresponding repair on the self-preheating type burner according to different fault types, improves the repair efficiency, and saves the fault finding time.
The specific implementation steps of the method for diagnosing the fault of the self-preheating burner provided by the embodiment are described in detail below with reference to fig. 1:
firstly, step S101 is executed, and after the gas hand valve 216 is closed, the self-test program of the self-preheating burner is started, wherein the gas hand valve 216 is arranged on the gas pipeline 214 of the self-preheating burner.
Specifically, when fault diagnosis is carried out on the self-preheating type burner, the gas hand valve is closed in a manual or automatic mode, and risks such as gas explosion, explosion or gas poisoning are avoided. Starting a self-checking program of the self-preheating burner, and if the self-checking program can be successfully started, indicating that a controller of the self-preheating burner is normal; if the self-test program is not started, the controller may be replaced or repaired or the circuit where the controller is located may be repaired due to a fault such as a short circuit, an open circuit, or a power failure.
In this step, after the gas hand valve 216 is closed, the self-checking program of the self-preheating burner is started to check whether the controller of the self-preheating burner or a circuit where the controller is located has a fault, so as to perform safe and reliable fault diagnosis on the self-preheating burner, and thus the safety and accuracy of fault diagnosis are reflected.
Next, step S102 is executed to obtain a flame abnormal fault state, a gas solenoid valve fault state, a fuse fault state, and an ignition time fault state according to a self-checking program.
Specifically, through self-checking program diagnosis, a flame abnormal fault state, a gas solenoid valve fault state, a fuse fault state and an ignition time fault state can be obtained. Each fault state represents different faults, and different fault states are found out through a self-checking program so as to carry out subsequent deep fault diagnosis on different faults, and the systematicness, the refinement and the accuracy of the fault diagnosis on the self preheating type burner are embodied.
It should be noted that, corresponding fault diagnosis is performed according to the obtained different fault states, and here, deep diagnosis needs to be performed on each fault state, and step S103, step S104, step S105, and step S106 need to be performed. The execution sequence of step S103, step S104, step S105 and step S106 can be switched, or the execution can be performed simultaneously.
Step S103 is executed, and according to the flame abnormal fault state, a flame fault detection mode corresponding to the flame abnormal fault state is adopted to carry out fault diagnosis.
According to the abnormal flame fault state, a flame fault detection mode is adopted for fault diagnosis, and the flame fault detection mode is as follows:
specifically, after the controller is closed, the air solenoid valve 212 is manually opened to purge for more than 30 seconds, or the purging is performed for a time set according to the requirement, so that residual gas is purged out, and the gas is prevented from participating in gas detonation. After cleaning the redundant fuel gas, starting the controller and entering a manual ignition mode. If the manual ignition mode can be started, entering a manual ignition test program; and if the manual ignition mode is not started, determining that the controller of the self preheating type burner has a fault.
Under the abnormal flame fault state, the controller of the self preheating type burner is detected again to detect the controller in multiple directions, whether the controller has a fault is determined, and meanwhile, when the controller is diagnosed, the personal safety of operators is guaranteed, and the accuracy and the safety of fault diagnosis are reflected.
After entering the manual ignition test program, observing whether the air solenoid valve 212 and the gas solenoid valve 215 have switch actions, wherein the switch actions include: an opening action or a closing action. If the air electromagnetic valve 212 and the gas electromagnetic valve 215 are detected to have switch actions, the gas manual valve 216 is opened to perform manual ignition operation, wherein the air electromagnetic valve 212 and the gas electromagnetic valve 215 are arranged on the self-preheating type burner; if the air solenoid valve 212 is detected to have no switching action, determining that the air solenoid valve 212 has a fault; if the gas electromagnetic valve 215 is detected not to have the switch action, the gas electromagnetic valve 215 is determined to have the fault.
Specifically, the air solenoid valve 212 and the gas solenoid valve 215 are subjected to failure diagnosis in the manual ignition test procedure. When the air solenoid valve 212 has an opening action or a closing action, the air solenoid valve 212 has no fault; when the air solenoid 212 has no opening or closing action, the air solenoid 212 has a failure. Similarly, when the gas solenoid valve 215 has an opening action or a closing action, the gas solenoid valve 215 has no fault; when the gas solenoid valve 215 does not have an opening action or a closing action, the gas solenoid valve 215 has a failure. When the air electromagnetic valve 212 and the gas electromagnetic valve 215 are not in fault, a gas method is opened, and manual ordering operation is carried out; otherwise, it is determined that there is a failure in the air solenoid valve 212, or there is a failure in the gas solenoid valve 215, or there is a failure in both the air solenoid valve 212 and the gas solenoid valve 215.
Here, the air solenoid valve 212 and the gas solenoid valve 215 are subjected to failure diagnosis, and detailed and accurate diagnosis results are presented.
After the gas hand valve 216 is opened and the manual ignition operation is performed, the presence or absence of a flame in the burner core 207 is observed from the peephole of the self-preheating burner, or the presence or absence of a flame in the burner core 207 is detected. If the flame in the self preheating type burner is detected, judging whether the loop current value of the self preheating type burner can be obtained or not, and detecting a setting device of the self preheating type burner according to the judgment result, wherein the setting device comprises a joint of an electrode cap 202 and a high-voltage wire 203 of the self preheating type burner and an ignition transformer (not shown in fig. 2) of the self preheating type burner; and if the self-preheating burner is detected not to have flame, determining that the electrode 201 of the self-preheating burner has a fault. When it is determined that the electrode 201 has a fault, it is determined whether the electrode 201 is burnt, deformed, rusted, short in length, clean in the spark plug, and the like, so that the electrode 201 is repaired or replaced accordingly.
Here, the failure diagnosis of the electrode 201 of the self-preheating burner shows a detailed and accurate diagnosis result.
When judging whether the loop current value of the self preheating type burner can be obtained or not, whether the loop current value can be obtained in the loop of the self preheating type burner or not needs to be detected. If the loop current value can be obtained, detecting the numerical value jumping amplitude of the loop current value; if the current value of the loop cannot be obtained, the fault is determined to exist at the joint of the electrode cap 202 and the high-voltage lead 203 of the self preheating type burner or the ignition transformer of the self preheating type burner.
After the loop current value is obtained, the value jitter amplitude of the loop current value needs to be detected. It should be noted that the loop current value is related to the flame size of the burner core 207, and when the flame is large, the loop current value is large, and when the flame is small, the loop current value is small. Therefore, whether the flame of the burner core 207 is stable or not is determined by the numerical fluctuation range of the loop current value.
If the value jumping amplitude is detected not to be in the jumping threshold range, namely the flame of the burner core 207 is unstable, the opening degrees of the air hand valve 213 and the gas hand valve 216 are adjusted until the value jumping amplitude is in the jumping threshold range, wherein the air hand valve 213 is arranged on the air pipeline 211 of the self-preheating burner; if the value jumping amplitude is detected to be within the jumping threshold range, namely the flame stability of the burner core 207 is represented, normally starting the self-preheating burner, wherein the normally starting the self-preheating burner is as follows: after the self-preheating type burner is subjected to fault detection, the self-preheating type burner is not in any fault, and the self-preheating type burner can be started to work normally.
It should be noted that the jitter threshold range is set according to actual conditions.
For example, the jitter threshold range is set to 0 to 1; the loop current value is 50.1, the next second jitter is 50.5, the next second jitter is 50.3, and so on. And (4) if the numerical value jumping amplitude of the loop current value is not more than the range of 0 to 1, normally starting the self preheating type burner.
According to the abnormal flame fault state, fault diagnosis is sequentially performed on the controller of the self-preheating type burner, the air electromagnetic valve 212, the gas electromagnetic valve 215, the electrode 201, the connection part of the electrode cap 202 and the high-voltage lead 203, the ignition transformer wiring of the self-preheating type burner, the air hand valve 213 and the gas hand valve 216, and the characteristics of systematicness, detail, accuracy and rapidness of the fault diagnosis of the self-preheating type burner are reflected.
And S104, performing fault diagnosis by adopting a fault detection mode of the gas electromagnetic valve corresponding to the fault state of the gas electromagnetic valve according to the fault state of the gas electromagnetic valve.
Specifically, the failure state of the gas solenoid valve indicates that the gas solenoid valve 215 cannot be completely closed without power supply, or that foreign matter is blocked inside the valve rod of the gas solenoid valve 215 or the gas solenoid valve is not sealed tightly. Through the fault detection mode of the gas electromagnetic valve, the gas electromagnetic valve 215 of the self preheating type burner is determined to have a fault, and the valve body of the gas electromagnetic valve 215 is replaced or foreign matters in the gas electromagnetic valve 215 are cleaned.
And step S105 is executed, and according to the fuse fault state, a fuse fault detection mode corresponding to the fuse fault state is adopted to carry out fault diagnosis.
Specifically, the fuse fault state indicates that a fuse within the controller of the self-preheating burner is burned out. And determining that the controller of the self preheating type burner has a fault through a fuse fault detection mode, and replacing the fuse in the controller.
And step S106 is executed, and fault diagnosis is carried out by adopting an ignition time fault detection mode corresponding to the ignition time fault state according to the ignition time fault state.
The ignition time fault state indicates that the ignition time of the self preheating type burner is too short, namely, the automatic ignition program of the self preheating type burner is manually and continuously and rapidly started, and the controller cannot respond when executing the ignition program. Through the ignition time fault detection mode, the controller of the self preheating type burner can automatically reset the self preheating type burner and restart the self preheating type burner.
According to the fault state of the gas electromagnetic valve, the fault state of the fuse and the fault state of the ignition time, corresponding fault determination is carried out on the self preheating type burner, and the advantages of high speed, high efficiency, high accuracy, systematization detection and the like of fault diagnosis of the self preheating type burner are embodied.
After the faults of the self preheating type burner are determined, an operator can be informed to overhaul or replace the corresponding faults through connecting an alarm lamp of the self preheating type burner or prompting by sound or prompting by a short message. For example, when a failure state of the gas solenoid valve is obtained, after it is determined that the gas solenoid valve 215 of the self-preheating burner has a failure, an operator may be notified to repair or replace the gas solenoid valve 215 by connecting an alarm lamp of the self-preheating burner, by a voice prompt or a short message prompt.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the fault diagnosis method of the embodiment firstly closes the gas hand valve and starts the self-checking program, so that whether the controller of the self-preheating burner has a fault or not is firstly judged. And then, obtaining results of the flame abnormal fault state, the gas electromagnetic valve fault state, the fuse fault state and the ignition time fault state according to the self-checking program. And then, fault diagnosis is carried out on different fault states by adopting detection modes corresponding to the different fault states, so that the process and systematic fault detection is carried out on the self preheating type burner, the fault types of the self preheating type burner are refined, the self preheating type burner is repaired correspondingly according to the different fault types, the repairing efficiency is improved, and the fault finding time is saved.
Example two
Based on the same inventive concept, a second embodiment of the present invention further provides a failure diagnosis apparatus for a self-preheating burner, as shown in fig. 3, including:
the starting module 301 is configured to start a self-checking program of the self-preheating type burner after a gas hand valve is closed, where the gas hand valve is arranged on a gas pipeline of the self-preheating type burner;
an obtaining module 302, configured to obtain, according to the detection program, a flame abnormal fault state, a gas solenoid valve fault state, a fuse fault state, and an ignition time fault state;
the diagnosis module 303 is configured to perform fault diagnosis by using a flame fault detection method corresponding to the flame abnormal fault state according to the flame abnormal fault state; according to the fault state of the gas electromagnetic valve, fault diagnosis is carried out by adopting a gas electromagnetic valve fault detection mode corresponding to the fault state of the gas electromagnetic valve; according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis; and according to the ignition time fault state, performing fault diagnosis by adopting an ignition time fault detection mode corresponding to the ignition time fault state.
As an alternative embodiment, the diagnostic module 303 is further configured to: according to the abnormal flame fault state, performing fault diagnosis by adopting a flame fault detection mode corresponding to the abnormal flame fault state, and the method comprises the following steps:
starting a manual ignition mode according to the abnormal flame fault state;
if the manual ignition mode can be started, entering a manual ignition test program;
and if the manual ignition mode cannot be started, determining that the controller of the self preheating type burner has a fault.
As an alternative embodiment, after entering the manual ignition test procedure, the method further includes:
if the fact that the air electromagnetic valve and the gas electromagnetic valve both have switch actions is detected, the gas manual valve is opened, and manual ignition operation is conducted, wherein the air electromagnetic valve is arranged on an air pipeline of the self-preheating type burner, and the gas electromagnetic valve is arranged on a gas pipeline of the self-preheating type burner;
if the air electromagnetic valve is detected to have no switching action, determining that the air electromagnetic valve has a fault;
and if the gas electromagnetic valve is detected to have no switching action, determining that the gas electromagnetic valve has a fault.
As an alternative embodiment, after performing the manual ignition operation, the diagnostic module 303 is further configured to:
if the self-preheating type burner is detected to have flame, judging whether the loop current value of the self-preheating type burner can be obtained or not, and detecting a setting device of the self-preheating type burner according to a judgment result, wherein the setting device comprises a joint of an electrode cap of the self-preheating type burner and a high-voltage wire and an ignition transformer of the self-preheating type burner;
and if the self-preheating type burner is detected to have no flame, determining that the electrode of the self-preheating type burner has a fault.
As an optional embodiment, the determining whether the loop current value of the self-preheating burner can be obtained includes:
if the loop current value can be obtained, detecting the numerical value jumping amplitude of the loop current value;
and if the loop current value cannot be acquired, determining that the fault exists at the joint of the electrode cap of the self-preheating type burner and the high-voltage wire or the ignition transformer of the self-preheating type burner.
As an alternative embodiment, the detecting whether there is a value jump in the loop current value includes:
if the numerical value jumping amplitude is detected not to be within the jumping threshold range, the opening degrees of an air hand valve and a gas hand valve are adjusted until the numerical value jumping amplitude is within the jumping threshold range, wherein the air hand valve is arranged on an air pipeline of the self-preheating type burner;
and if the numerical value jumping amplitude is detected to be within the jumping threshold range, normally starting the self preheating type burner.
As an alternative embodiment, the diagnostic module 303 is further configured to: according to the gas solenoid valve fault state, adopt with the gas solenoid valve fault detection mode that gas solenoid valve fault state corresponds carries out fault diagnosis, include:
determining that the gas electromagnetic valve of the self-preheating burner has a fault in a gas electromagnetic valve fault detection mode;
and according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis, wherein the fault diagnosis comprises the following steps:
determining that the controller of the self-preheating burner has a fault through the fuse fault detection mode;
and according to the ignition time fault state, adopting an ignition time fault detection mode corresponding to the ignition time fault state to carry out fault diagnosis, wherein the fault diagnosis comprises the following steps:
and resetting the self-preheating type burner in an ignition time fault detection mode, and restarting the self-preheating type burner.
Since the fault diagnosis device for the self-preheating burner described in this embodiment is a device used for implementing the fault diagnosis method for the self-preheating burner in the first embodiment of the present application, based on the fault diagnosis method for the self-preheating burner described in the first embodiment of the present application, a person skilled in the art can understand a specific implementation manner and various variations of the fault diagnosis device for the self-preheating burner in this embodiment, so that a detailed description of how the fault diagnosis device for the self-preheating burner implements the method in the first embodiment of the present application is omitted here. The technical skill in the art should be able to implement the device for diagnosing the failure of the self-preheating burner in the first embodiment of the present application.
EXAMPLE III
Based on the same inventive concept, the third embodiment of the present invention further provides a computer device, as shown in fig. 4, including a memory 404, a processor 402, and a computer program stored on the memory 404 and operable on the processor 402, where the processor 402 executes the computer program to implement the steps of any one of the above-mentioned self-preheating burner fault diagnosis methods.
Where in fig. 4 a bus architecture (represented by bus 400) is shown, bus 400 may include any number of interconnected buses and bridges, and bus 400 links together various circuits including one or more processors, represented by processor 402, and memory, represented by memory 404. The bus 400 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 406 provides an interface between the bus 400 and the receiver 401 and transmitter 403. The receiver 401 and the transmitter 403 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 402 is responsible for managing the bus 400 and general processing, while the memory 404 may be used for storing data used by the processor 402 in performing operations.
Example four
Based on the same inventive concept, a fourth embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of any one of the methods of diagnosing a failure of a self-preheating burner described in the first embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A fault diagnosis method of a self-preheating burner is characterized by comprising the following steps:
after a gas hand valve is closed, starting a self-checking program of a self-preheating type burner, wherein the gas hand valve is arranged on a gas pipeline of the self-preheating type burner;
acquiring a flame abnormal fault state, a gas electromagnetic valve fault state, a fuse fault state and an ignition time fault state according to the self-checking program;
according to the abnormal flame fault state, performing fault diagnosis by adopting a flame fault detection mode corresponding to the abnormal flame fault state, wherein the fault diagnosis comprises the following steps:
starting a manual ignition mode according to the abnormal flame fault state;
if the manual ignition mode can be started, entering a manual ignition test program;
if the manual ignition mode cannot be started, determining that a controller of the self-preheating burner has a fault;
according to the gas solenoid valve fault state, adopt with the gas solenoid valve fault detection mode that gas solenoid valve fault state corresponds carries out fault diagnosis, include:
determining that the gas electromagnetic valve of the self-preheating burner has a fault in a gas electromagnetic valve fault detection mode;
according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis, and the fault diagnosis method comprises the following steps:
determining that the controller of the self-preheating burner has a fault through the fuse fault detection mode;
according to the ignition time fault state, adopting an ignition time fault detection mode corresponding to the ignition time fault state to carry out fault diagnosis, wherein the fault diagnosis comprises the following steps:
and resetting the self preheating type burner and restarting the self preheating type burner in the ignition time fault detection mode.
2. The method of claim 1, wherein after entering the manual ignition test procedure, further comprising:
if the fact that the air electromagnetic valve and the gas electromagnetic valve are both switched on and off is detected, the gas manual valve is opened, and manual ignition operation is conducted, wherein the air electromagnetic valve is arranged on an air pipeline of the self-preheating type burner, and the gas electromagnetic valve is arranged on a gas pipeline of the self-preheating type burner;
if the air electromagnetic valve is detected to have no switching action, determining that the air electromagnetic valve has a fault;
and if the gas electromagnetic valve is detected to have no switching action, determining that the gas electromagnetic valve has a fault.
3. The method of claim 2, wherein after performing a manual ignition operation, the method further comprises:
if the self-preheating type burner is detected to have flame, judging whether the loop current value of the self-preheating type burner can be obtained or not, and detecting a setting device of the self-preheating type burner according to a judgment result, wherein the setting device comprises a joint of an electrode cap of the self-preheating type burner and a high-voltage wire and an ignition transformer of the self-preheating type burner;
and if the self-preheating type burner is detected to have no flame, determining that the electrode of the self-preheating type burner has a fault.
4. The method of claim 3, wherein the determining whether the loop current value of the self-preheating burner can be obtained comprises:
if the loop current value can be obtained, detecting the numerical value jumping amplitude of the loop current value;
and if the current value of the loop cannot be acquired, determining that the fault exists at the joint of the electrode cap of the self-preheating type burner and the high-voltage lead or the ignition transformer of the self-preheating type burner.
5. The method of claim 4, wherein said detecting a magnitude of a jitter of said loop current value comprises:
if the numerical value jumping amplitude is detected not to be within the jumping threshold range, adjusting the opening degrees of an air hand valve and a gas hand valve until the numerical value jumping amplitude is within the jumping threshold range, wherein the air hand valve is arranged on an air pipeline of the self preheating type burner;
and if the numerical value jumping amplitude is detected to be within the jumping threshold range, normally starting the self preheating type burner.
6. A failure diagnosis device of a self-preheating burner is characterized by comprising:
the starting module is used for starting a self-checking program of the self-preheating type burner after a gas hand valve is closed, wherein the gas hand valve is arranged on a gas pipeline of the self-preheating type burner;
the acquisition module is used for acquiring a flame abnormal fault state, a gas electromagnetic valve fault state, a fuse fault state and an ignition time fault state according to the self-checking program;
the diagnosis module is used for carrying out fault diagnosis by adopting a flame fault detection mode corresponding to the flame abnormal fault state according to the flame abnormal fault state, and comprises:
starting a manual ignition mode according to the abnormal flame fault state;
if the manual ignition mode can be started, entering a manual ignition test program;
if the manual ignition mode cannot be started, determining that a controller of the self-preheating burner has a fault;
according to the gas solenoid valve fault state, adopt with the gas solenoid valve fault detection mode that gas solenoid valve fault state corresponds carries out fault diagnosis, include:
determining that the gas electromagnetic valve of the self-preheating burner has a fault in a gas electromagnetic valve fault detection mode;
according to the fuse fault state, adopting a fuse fault detection mode corresponding to the fuse fault state to carry out fault diagnosis, and the fault diagnosis method comprises the following steps:
determining that the controller of the self-preheating burner has a fault through the fuse fault detection mode;
according to the ignition time fault state, adopting an ignition time fault detection mode corresponding to the ignition time fault state to carry out fault diagnosis, wherein the fault diagnosis comprises the following steps:
and resetting the self preheating type burner and restarting the self preheating type burner in the ignition time fault detection mode.
7. Computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor realizes the method steps of any of claims 1-5 when executing the program.
8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps of any one of claims 1 to 5.
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Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08261450A (en) * | 1995-03-24 | 1996-10-11 | Gastar Corp | Combustion apparatus and its method for detecting abnormal combustion |
| JP4604269B2 (en) * | 2001-08-08 | 2011-01-05 | パロマ工業株式会社 | Gas burning appliances |
| US20050218238A1 (en) * | 2002-05-10 | 2005-10-06 | Frans Merrild | Heat burner surveillance |
| CN100498073C (en) * | 2006-03-10 | 2009-06-10 | 上海宝信软件股份有限公司 | Controlling method for air single-preheating discrete reversal valve heat accumulating burner |
| CN201680712U (en) * | 2010-01-26 | 2010-12-22 | 江苏中圣园科技股份有限公司 | Annular sleeve kiln burner ignition control device |
| CN102563695A (en) * | 2010-12-30 | 2012-07-11 | 但忠民 | Automatic monitoring ignition controller |
| CN102221299B (en) * | 2011-03-30 | 2014-03-26 | 南京梅山冶金发展有限公司 | Annular sleeve lime kiln burner control device |
| CN102759279B (en) * | 2011-04-28 | 2015-06-03 | 上海宝信软件股份有限公司 | Distributed intelligent nozzle controller for flame temperature control in industrial furnace heat treatment |
| CN202836250U (en) * | 2012-08-24 | 2013-03-27 | 霍尼韦尔环境自控产品（天津）有限公司 | Nozzle controller |
| CN205482407U (en) * | 2016-01-14 | 2016-08-17 | 佛山市科皓燃烧设备制造有限公司 | Nozzle controller |
| CN205607180U (en) * | 2016-04-19 | 2016-09-28 | 武汉重工铸锻有限责任公司 | High speed pulse nozzle intelligence combustion controller |
| CN206532105U (en) * | 2017-01-13 | 2017-09-29 | 北京兴达奇热工控制设备有限公司 | A kind of integral multifunctional burner controller |
| CN206572546U (en) * | 2017-01-13 | 2017-10-20 | 北京兴达奇热工控制设备有限公司 | A kind of burner controller |
| CN106681395A (en) * | 2017-03-10 | 2017-05-17 | 北京兴达奇热工控制设备有限公司 | Intelligent burner nozzle flame temperature controller |
| CN108120310B (en) * | 2017-11-22 | 2019-06-04 | 南京钢铁股份有限公司 | A kind of roller bottom furnace self preheating burner abnormal examination and processing method |
| CN209263081U (en) * | 2018-10-19 | 2019-08-16 | 北京首钢国际工程技术有限公司 | A kind of intelligent ignition device for radiation pipe burner tip |
| CN109357283A (en) * | 2018-10-19 | 2019-02-19 | 北京首钢国际工程技术有限公司 | A kind of intelligent ignition device and method for radiation pipe burner tip |
| CN109357284A (en) * | 2018-10-19 | 2019-02-19 | 北京首钢国际工程技术有限公司 | A kind of intelligent ignition device and method for open flame combustion nozzle |
| CN109579045A (en) * | 2018-12-29 | 2019-04-05 | 佛山市旭灿科技有限公司 | A kind of burner valve block structure and its control method for aluminium melting furnace |
| CN111664936B (en) * | 2020-05-29 | 2022-10-28 | 首钢京唐钢铁联合有限责任公司 | Method for detecting burner failure |
| CN112680591B (en) * | 2020-11-19 | 2022-12-13 | 首钢京唐钢铁联合有限责任公司 | Burner failure treatment method and device and burner |
-
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