CN115774052A - Method and system for evaluating state of high-temperature furnace tube - Google Patents
Method and system for evaluating state of high-temperature furnace tube Download PDFInfo
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Abstract
The invention discloses a method and a system for evaluating the state of a high-temperature furnace tube, wherein the method comprises the following steps: s1: stopping using the high-temperature furnace tube in the service process, respectively installing a laser calibrator and laser stroke receiving equipment at two ends of the high-temperature furnace tube, installing the laser calibrator at one end of the high-temperature furnace tube, enabling laser emitted by the laser calibrator to be in contact with the high-temperature furnace tube, irradiating the laser onto the laser stroke receiving equipment installed at the other end of the high-temperature furnace tube, rotating the laser calibrator around a port of the high-temperature furnace tube for one circle, correspondingly recording the stroke record of the laser through the laser stroke receiving equipment, transmitting the stroke record to display equipment, and detecting whether the stroke track in the stroke record is disconnected; by implementing the method, the high-temperature furnace tube with the creep expansion bulge on the outer surface is detected by laser, the high-temperature furnace tube with the crack on the inner layer is detected by high-frequency ultrasonic waves, and screening is sequentially performed, so that the detection difficulty of the high-temperature furnace tube is simplified, and the detection efficiency is improved.
Description
Technical Field
The invention relates to the technical field of high-temperature furnace tubes, in particular to a method and a system for evaluating the state of a high-temperature furnace tube.
Background
At present, when the high-temperature furnace tube is used, because the environment of the high-temperature furnace tube in the service process is extremely severe, the high-temperature furnace tube is easy to damage due to high temperature and stress for a long time, meanwhile, the damage of the high-temperature furnace tube is generally creep damage, so that the cracking phenomenon is easy to generate, when the crack of the high-temperature furnace tube reaches a certain size, the high-temperature furnace tube is prevented from being cracked, then the high-temperature furnace tube around the high-temperature furnace tube can be affected, a series of damages are prevented, the potential safety hazard is caused, the state of the high-temperature furnace tube needs to be detected, the cracking phenomenon is prevented, the method for evaluating the state of the high-temperature furnace tube in the prior art is complex, the consumed time is long, the characteristics of the crack are not beneficial to observation, and the evaluation on the state of the high-temperature furnace tube is not beneficial.
Disclosure of Invention
The technical problem to be solved by the present invention is to address at least one of the drawbacks of the related art mentioned in the background of the invention: the state of the high-temperature furnace tube cannot be accurately and quickly evaluated, and a method and a system for evaluating the state of the high-temperature furnace tube are provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for evaluating the state of the high-temperature furnace tube comprises the following steps:
s1: stopping using a high-temperature furnace tube in a service process, respectively installing a laser calibrator and laser stroke receiving equipment at two ends of the high-temperature furnace tube, installing the laser calibrator at one end of the high-temperature furnace tube, enabling laser emitted by the laser calibrator to be in contact with the high-temperature furnace tube, irradiating the laser to the laser stroke receiving equipment installed at the other end of the high-temperature furnace tube, rotating the laser calibrator around a port of the high-temperature furnace tube for a circle, correspondingly recording a stroke record of the laser by the laser stroke receiving equipment, transmitting the stroke record to display equipment, and detecting whether a stroke track in the stroke record is disconnected;
s2: if the stroke track is not disconnected, the laser calibrator and the laser stroke receiving equipment are disassembled, and ultrasonic detection equipment is installed on the outer surface of the high-temperature furnace tube;
s3: the method comprises the following steps that waveforms of a metal layer in the high-temperature furnace tube are collected through a plurality of groups of high-frequency ultrasonic probes in different installation modes in the ultrasonic detection equipment, and the waveforms are in different ripple states when ultrasonic waves encounter cracks or do not encounter cracks;
s4: the acquired waveforms are transmitted to information processing equipment, the waveform diagrams are transmitted to display equipment after the waveforms are sorted, and the damage state of the high-temperature furnace tube is detected by analyzing a plurality of groups of waveform diagrams;
s5: if the change amplitude of the wave shape in the oscillogram is detected to be stable, judging that the high-temperature furnace tube has no cracks, and executing the step S6;
s6: and moving the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube through a moving mechanism on the ultrasonic detection equipment, repeatedly executing the step S3, and sequentially detecting other areas of the high-temperature furnace tube until the whole high-temperature furnace tube completes ultrasonic detection.
Preferably, in the method for evaluating the state of the high-temperature furnace tube according to the present invention, in step S3: the high-frequency ultrasonic probes are four groups, the waveforms of the metal layer in the high-temperature furnace tube are collected through the four groups of high-frequency ultrasonic probes in different installation modes, and the frequencies of the four groups of high-frequency ultrasonic probes are the same.
Preferably, in the method for evaluating the state of the high-temperature furnace tube, the four groups of high-frequency ultrasonic probes are respectively arranged in four directions of the high-temperature furnace tube, so as to maintain the detection accuracy of the corrugation of the high-temperature furnace tube.
Preferably, in the method for evaluating the state of the high-temperature furnace tube, the ripple state includes a steady state and an amplitude state;
wherein the steady state indicates that the high temperature furnace tube has no cracks, and the amplitude state indicates that the high temperature furnace tube has cracks.
Preferably, in the method for evaluating the state of the high-temperature furnace tube according to the present invention, in step S2, if it is detected that the stroke track is disconnected, the operation of evaluating the state of the high-temperature furnace tube is ended;
in step S5, if it is detected that the waveform amplitude in the waveform diagram suddenly extends downward from a steady waveform and is lower than a set value, the high temperature furnace tube state evaluation operation is ended.
Preferably, in the method for evaluating a state of a high-temperature furnace tube according to the present invention, step S5 includes:
and if the waveform amplitude in the waveform diagram is detected to suddenly extend downwards from the stable waveform and is reduced to a set value, an alarm lamp gives an alarm to prompt.
Preferably, in the method for evaluating the state of the high-temperature furnace tube, the moving mechanism on the ultrasonic detection device is driven by a motor and moves on the outer surface of the high-temperature furnace tube through a roller.
The invention also constructs a system for evaluating the state of the high-temperature furnace tube, which comprises:
the system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module is used for stopping a high-temperature furnace tube in a service process, a laser calibrator and a laser stroke receiving device are respectively arranged at two ends of the high-temperature furnace tube, the laser calibrator is arranged at one end of the high-temperature furnace tube, laser emitted by the laser calibrator is in contact with the high-temperature furnace tube, meanwhile, the laser is irradiated onto the laser stroke receiving device arranged at the other end of the high-temperature furnace tube, the laser calibrator rotates around a port of the high-temperature furnace tube for a circle, a stroke record of the laser is correspondingly recorded through the laser stroke receiving device, the stroke record is transmitted to a display device, and whether a stroke track in the stroke record is disconnected or not is detected;
the first judgment module is used for dismounting the laser calibrator and the laser stroke receiving equipment and mounting ultrasonic detection equipment on the outer surface of the high-temperature furnace tube if the stroke track is detected to be not disconnected;
the acquisition module is used for acquiring the waveform of the metal layer in the high-temperature furnace tube through a plurality of groups of high-frequency ultrasonic probes in different installation modes in the ultrasonic detection equipment, and the waveform presents different ripple states when the ultrasonic waves encounter cracks and do not encounter cracks;
the analysis module is used for conveying the acquired waveforms to information processing equipment, transmitting the oscillograms to the display equipment after the arrangement, and detecting the damage state of the high-temperature furnace tube by analyzing a plurality of groups of the oscillograms;
the second judgment module is used for judging that the high-temperature furnace tube has no cracks and operating the second detection module if the change amplitude of the wave deformation in the oscillogram is detected to be stable;
and the second detection module is used for moving the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube through the moving mechanism on the ultrasonic detection equipment, repeatedly operating the acquisition module, and sequentially detecting other areas of the high-temperature furnace tube until the whole high-temperature furnace tube completes ultrasonic detection.
Preferably, in the system for evaluating the state of the high-temperature furnace tube, the acquisition module is further configured to:
the high-frequency ultrasonic probes are four groups, the waveforms of the metal layer in the high-temperature furnace tube are collected through the four groups of high-frequency ultrasonic probes in different installation modes, and the frequencies of the four groups of high-frequency ultrasonic probes are the same.
Preferably, in the system for evaluating the state of the high-temperature furnace tube, the ripple state comprises a steady state and an amplitude state;
wherein the steady state indicates that the high temperature furnace tube has no cracks, and the amplitude state indicates that the high temperature furnace tube has cracks.
By implementing the invention, the following beneficial effects are achieved:
the invention discloses a method and a system for evaluating the state of a high-temperature furnace tube, wherein the state of the high-temperature furnace tube is evaluated to detect and replace the high-temperature furnace tube, the outer surface of the high-temperature furnace tube is subjected to creep expansion bulge detection through a laser calibrator and laser stroke receiving equipment, the screened high-temperature furnace tube is subjected to waveform detection on a metal layer of the high-temperature furnace tube through a plurality of groups of high-frequency ultrasonic probes in different directions, the metal layer is detected through display equipment, and then the wave crest is lower than a set value, so that a large crack is judged to exist, and then the metal layer is moved out and detected through mobile equipment, so that the high-temperature furnace tube is replaced through an operator.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic flow chart of the method for evaluating the condition of a high-temperature furnace tube according to the present invention;
FIG. 2 is a block diagram of a high temperature furnace tube condition evaluation system according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
It should be noted that the flow charts shown in the drawings are only exemplary and do not necessarily include all the contents and operations/steps, nor do they necessarily have to be executed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
In this embodiment, as shown in fig. 1, the present invention provides a method for evaluating a state of a high temperature furnace tube, including the following steps:
s1: stopping using the high-temperature furnace tube in the service process, respectively installing a laser calibrator and laser stroke receiving equipment at two ends of the high-temperature furnace tube, installing the laser calibrator at one end of the high-temperature furnace tube, enabling laser emitted by the laser calibrator to be in contact with the high-temperature furnace tube, irradiating the laser onto the laser stroke receiving equipment installed at the other end of the high-temperature furnace tube, rotating the laser calibrator around a port of the high-temperature furnace tube for one circle, correspondingly recording the stroke record of the laser through the laser stroke receiving equipment, transmitting the stroke record to display equipment, and detecting whether the stroke track in the stroke record is disconnected;
s2: if the detection stroke track is not disconnected, the laser calibrator and the laser stroke receiving equipment are disassembled, and the ultrasonic detection equipment is installed on the outer surface of the high-temperature furnace tube;
s3: the method comprises the following steps that a plurality of groups of high-frequency ultrasonic probes in different installation modes in an ultrasonic detection device are used for collecting the waveform of a metal layer in a high-temperature furnace tube, and when ultrasonic waves encounter cracks or do not encounter cracks, the waveform shows different ripple states;
s4: the collected waveforms are transmitted to information processing equipment, the oscillograms are transmitted to display equipment after being sorted, and the damage state of the high-temperature furnace tube is detected by analyzing a plurality of groups of the oscillograms;
s5: if the change amplitude of the wave shape in the detection oscillogram is stable, judging that the high-temperature furnace tube has no crack, and executing the step S6;
s6: and (4) moving the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube through a moving mechanism on the ultrasonic detection equipment, repeatedly executing the step S3, and sequentially detecting other areas of the high-temperature furnace tube until the whole high-temperature furnace tube is subjected to ultrasonic detection.
Specifically, the method comprises the following steps:
in this embodiment, step S3 includes:
the high-frequency ultrasonic probes are four groups, the waveforms of the metal layer in the high-temperature furnace tube are collected through the four groups of high-frequency ultrasonic probes in different installation modes, and the frequencies of the four groups of high-frequency ultrasonic probes are the same.
Wherein, four groups of high-frequency ultrasonic probes are respectively arranged at four positions of the high-temperature furnace tube, so as to keep the detection precision of the corrugations of the high-temperature furnace tube.
Also, in the present embodiment, the ripple state includes a steady state and an amplitude state;
wherein, the steady state indicates that the high temperature furnace tube has no cracks, and the amplitude state indicates that the high temperature furnace tube has cracks.
In addition, in the present embodiment, in step S2, if it is detected that the stroke track is disconnected, the state evaluation operation of the high-temperature furnace tube is ended;
in step S5, if it is detected that the waveform amplitude in the waveform diagram suddenly extends downward from a steady waveform and is lower than a set value, the high temperature furnace tube state evaluation operation is ended.
For example, in the first embodiment, the steps are included:
s1: operating personnel stops using the high temperature boiler tube of in-service process, make and detect the high temperature boiler tube state, and then conveniently install laser calibration appearance and laser stroke receiving equipment at the both ends of high temperature boiler tube, then will make the laser calibration appearance install the one end at the high temperature boiler tube, make and let laser and high temperature boiler tube contact, laser can shine to the laser stroke receiving equipment of the other end on simultaneously, and the laser calibration appearance is round high temperature boiler tube port rotation round this moment, make the stroke record with laser on receiving equipment, make it transmit the stroke orbit to display device on, thereby detect whether there is the disconnection in the stroke orbit of laser.
S2: if operating personnel takes place to have the disconnection at the stroke orbit of inspection laser, and then can explain this high temperature boiler tube surface has the inflation of wriggling and swells for in time change it needs, cracked phenomenon otherwise takes place easily, this high temperature boiler tube does not need to carry out next step simultaneously, makes it avoid the waste time, and when the disconnection did not take place in laser stroke orbit, can explain this moment that the bulging phenomenon has not yet appeared in the high temperature boiler tube, operating personnel dismantles laser detection equipment from the high temperature boiler tube outside, feasible install ultrasonic detection equipment on the surface of high temperature boiler tube.
S3: an operator can acquire the waveform of the metal layer in the high-temperature furnace tube through a plurality of groups of high-frequency ultrasonic probes in different installation modes in the ultrasonic detection equipment, and the ultrasonic waves have different ripple states when encountering cracks and having no cracks.
S4: the collected waveforms are conveyed to the information processing equipment through the transmission cable, then the information is sorted, the collected waveforms are transmitted to the display equipment, and then the damage state of the high-temperature furnace tube is conveniently checked through observing a plurality of groups of oscillograms on the display equipment, so that evaluation is convenient.
S5: when looking over the oscillogram of high temperature boiler tube, the oscillogram that comparatively intact high temperature boiler tube appears this moment is lower from top to bottom amplitude to comparatively steady, simultaneously when the oscillogram extends out from steady state suddenly from steady waveform downwards, when the waveform is low to the numerical value of settlement this moment, make and remind operating personnel through equipment, thereby can judge that there is great crackle on this position of this high temperature boiler tube inside, make and to change the high temperature boiler tube.
S6: after the detection of the high-temperature furnace tube is completed by an operator, and when no large crack appears through the oscillogram, the ultrasonic detection device is driven to move on the outer surface of the high-temperature furnace tube through the moving mechanism on the ultrasonic detection device, the step S3 is repeatedly executed, the high-frequency ultrasonic probe is driven to move through the moving of the ultrasonic detection device, so that other areas are sequentially detected until the whole high-temperature furnace tube is subjected to ultrasonic detection, the evaluation of the state of the high-temperature furnace tube by the operator is facilitated, and the damage condition of the high-temperature furnace tube is detected.
And after the detection of the high-temperature furnace tube is finished, other high-temperature furnace tubes can be detected in sequence, after the laser detection of the first high-temperature furnace tube is finished, the laser detection of other high-temperature furnace tubes can be performed, then other operators can perform waveform detection on the first high-temperature furnace tube, the detection of the state of the whole high-temperature furnace tube can be accelerated, and the efficiency of evaluating the state of the high-temperature furnace tube by the operators is improved.
Further, when cracks exist in the high-temperature furnace tube, cavities are generated at the grain boundaries among the grains inside the high-temperature furnace tube, and the cavities are expanded through stress, so that the collected ripple state is in an amplitude state.
In this embodiment, step S5 includes:
and if the waveform amplitude in the detection waveform diagram suddenly extends downwards from the stable waveform and is as low as a set value, an alarm lamp gives an alarm to prompt. Preferably, the setting value is 30% high of the display device, when the waveform is as low as the setting value, an alarm will be generated, and then the existence of a larger crack in the high-temperature furnace tube can be judged according to the waveform, so that the high-temperature furnace tube is convenient to replace.
In this embodiment, the moving mechanism on the ultrasonic detection device is driven by a motor and moves on the outer surface of the high-temperature furnace tube through the roller.
The high-temperature furnace tube is made of HK and HP series heat-resistant alloys, so that the high-temperature furnace tube has a good high-temperature resistant effect and is convenient to use under the conditions of high temperature and high pressure.
In this embodiment, as shown in fig. 2, the present invention also constructs a system for evaluating the condition of a high-temperature furnace tube, including:
the first detection module is used for stopping using the high-temperature furnace tube in the service process, respectively installing a laser calibrator and laser stroke receiving equipment at two ends of the high-temperature furnace tube, installing the laser calibrator at one end of the high-temperature furnace tube, enabling laser emitted by the laser calibrator to be in contact with the high-temperature furnace tube, irradiating the laser to the laser stroke receiving equipment installed at the other end of the high-temperature furnace tube, rotating the laser calibrator around the port of the high-temperature furnace tube for one circle, correspondingly recording the stroke record of the laser through the laser stroke receiving equipment, transmitting the stroke record to display equipment, and detecting whether the stroke track in the stroke record is disconnected or not;
the first judgment module is used for dismounting the laser calibrator and the laser stroke receiving equipment and mounting the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube if the detection stroke track is not disconnected;
the acquisition module is used for acquiring the waveform of the metal layer in the high-temperature furnace tube through a plurality of groups of high-frequency ultrasonic probes in different installation modes in the ultrasonic detection equipment, and the waveform presents different ripple states when the ultrasonic waves encounter cracks and do not encounter cracks;
the analysis module is used for transmitting the acquired waveforms to the information processing equipment, transmitting the oscillograms to the display equipment after the arrangement, and detecting the damage state of the high-temperature furnace tube by analyzing a plurality of groups of the oscillograms;
the second judgment module is used for judging that the high-temperature furnace tube has no crack if the change amplitude of the wave deformation in the detection oscillogram is stable, and operating the second detection module;
and the second detection module is used for moving the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube through the moving mechanism on the ultrasonic detection equipment, repeatedly operating the acquisition module, and sequentially detecting other areas of the high-temperature furnace tube until the whole high-temperature furnace tube is subjected to ultrasonic detection.
Specifically, the method comprises the following steps:
in this embodiment, the acquisition module is further configured to:
the high-frequency ultrasonic probes are four groups, the waveforms of the metal layer in the high-temperature furnace tube are collected through the four groups of high-frequency ultrasonic probes in different installation modes, and the frequencies of the four groups of high-frequency ultrasonic probes are the same.
The four groups of high-frequency ultrasonic probes are respectively arranged in four directions of the high-temperature furnace tube, so that the detection precision of the corrugations of the high-temperature furnace tube is kept.
Also, in the present embodiment, the ripple state includes a steady state and an amplitude state;
wherein, the steady state indicates that the high temperature furnace tube has no cracks, and the amplitude state indicates that the high temperature furnace tube has cracks.
In addition, in this embodiment, the first determining module is further configured to: if the travel track is detected to be disconnected, the state evaluation operation of the high-temperature furnace tube is ended;
the second determination module is further configured to: and if the waveform amplitude in the oscillogram is detected to suddenly extend downwards from the stable waveform and is reduced to a set value, finishing the state evaluation operation of the high-temperature furnace tube.
Further, when cracks exist in the high-temperature furnace tube, cavities are generated at the grain boundaries among the grains inside the high-temperature furnace tube, and the cavities are expanded through stress, so that the collected ripple state is in an amplitude state.
In this embodiment, the second determining module is further configured to:
and if the waveform amplitude in the detection waveform diagram suddenly extends downwards from the stable waveform and is as low as a set value, an alarm lamp gives an alarm to prompt. Preferably, the setting value is 30% high of the display device, when the waveform is as low as the setting value, an alarm will be generated, and then the existence of a larger crack in the high-temperature furnace tube can be judged according to the waveform, so that the high-temperature furnace tube is convenient to replace.
In this embodiment, the moving mechanism on the ultrasonic detection device is driven by a motor and moves on the outer surface of the high-temperature furnace tube through the roller.
The high-temperature furnace tube is made of HK and HP series heat-resistant alloys, so that the high-temperature furnace tube has a good high-temperature resistant effect and is convenient to use under the conditions of high temperature and high pressure.
By implementing the invention, the following beneficial effects are achieved:
the invention discloses a method and a system for evaluating the state of a high-temperature furnace tube, which are used for detecting and replacing the high-temperature furnace tube by evaluating the state of the high-temperature furnace tube, wherein the outer surface of the high-temperature furnace tube is subjected to creep swelling and bulging detection by a laser calibrator and laser stroke receiving equipment, the screened high-temperature furnace tube is subjected to waveform detection on a metal layer of the high-temperature furnace tube by a plurality of groups of high-frequency ultrasonic probes in different directions, the metal layer is detected by display equipment, and then the wave peak is lower than a set value, so that a large crack is determined, and then the metal layer is moved out and detected by mobile equipment, so that an operator can replace the high-temperature furnace tube.
It is to be understood that the foregoing examples, while indicating the preferred embodiments of the invention, are given by way of illustration and description, and are not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several changes and modifications can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (10)
1. A method for evaluating the state of a high-temperature furnace tube is characterized by comprising the following steps:
s1: stopping using a high-temperature furnace tube in a service process, respectively installing a laser calibrator and laser stroke receiving equipment at two ends of the high-temperature furnace tube, installing the laser calibrator at one end of the high-temperature furnace tube, enabling laser emitted by the laser calibrator to be in contact with the high-temperature furnace tube, irradiating the laser to the laser stroke receiving equipment installed at the other end of the high-temperature furnace tube, rotating the laser calibrator around a port of the high-temperature furnace tube for a circle, correspondingly recording a stroke record of the laser through the laser stroke receiving equipment, transmitting the stroke record to display equipment, and detecting whether a stroke track in the stroke record is disconnected;
s2: if the stroke track is detected to be not disconnected, the laser calibrator and the laser stroke receiving equipment are disassembled, and ultrasonic detection equipment is installed on the outer surface of the high-temperature furnace tube;
s3: the method comprises the following steps that a plurality of groups of high-frequency ultrasonic probes in different installation modes in the ultrasonic detection equipment are used for collecting the waveform of a metal layer in a high-temperature furnace tube, and when ultrasonic waves encounter cracks or do not encounter cracks, the waveform presents different ripple states;
s4: the acquired waveforms are transmitted to information processing equipment, the waveform diagrams are transmitted to display equipment after the waveforms are sorted, and the damage state of the high-temperature furnace tube is detected by analyzing a plurality of groups of waveform diagrams;
s5: if the change amplitude of the wave shape in the oscillogram is detected to be stable, judging that the high-temperature furnace tube has no cracks, and executing the step S6;
s6: and moving the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube through a moving mechanism on the ultrasonic detection equipment, repeatedly executing the step S3, and sequentially detecting other areas of the high-temperature furnace tube until the whole high-temperature furnace tube completes ultrasonic detection.
2. The method for evaluating the condition of a high-temperature furnace tube according to claim 1, wherein in step S3: the high-frequency ultrasonic probes are four groups, the waveforms of the metal layer in the high-temperature furnace tube are collected through the four groups of high-frequency ultrasonic probes in different installation modes, and the frequencies of the four groups of high-frequency ultrasonic probes are the same.
3. The method for evaluating the condition of the high-temperature furnace tube according to claim 2, wherein the four groups of high-frequency ultrasonic probes are respectively arranged in four directions of the high-temperature furnace tube, so that the detection precision of the corrugation of the high-temperature furnace tube is maintained.
4. The method for evaluating the condition of a high-temperature furnace tube according to claim 1, wherein the waviness condition includes a plateau condition and an amplitude condition;
wherein the steady state indicates that the high temperature furnace tube has no cracks, and the amplitude state indicates that the high temperature furnace tube has cracks.
5. The method for evaluating the condition of a high-temperature furnace tube according to claim 1,
in the step S2, if the travel track is detected to be disconnected, the state evaluation operation of the high-temperature furnace tube is ended;
in step S5, if it is detected that the waveform amplitude in the waveform diagram suddenly extends downward from a steady waveform and is lower than a set value, the high temperature furnace tube state evaluation operation is ended.
6. The method for evaluating the condition of a high-temperature furnace tube according to claim 1, wherein step S5 comprises:
and if the waveform amplitude in the waveform diagram is detected to suddenly extend downwards from the stable waveform and is reduced to a set value, an alarm lamp gives an alarm to prompt.
7. The method for evaluating the state of the high-temperature furnace tube according to claim 1, wherein the moving mechanism on the ultrasonic detection device is driven by a motor and moves on the outer surface of the high-temperature furnace tube through a roller.
8. A state evaluation system for a high-temperature furnace tube is characterized by comprising:
the system comprises a first detection module, a second detection module and a third detection module, wherein the first detection module is used for stopping a high-temperature furnace tube in a service process, a laser calibrator and a laser stroke receiving device are respectively installed at two ends of the high-temperature furnace tube, the laser calibrator is installed at one end of the high-temperature furnace tube, laser emitted by the laser calibrator is in contact with the high-temperature furnace tube, the laser irradiates on the laser stroke receiving device installed at the other end of the high-temperature furnace tube, the laser calibrator rotates around a port of the high-temperature furnace tube for a circle, a stroke record of the laser is correspondingly recorded through the laser stroke receiving device, the stroke record is transmitted to a display device, and whether a stroke track in the stroke record is disconnected or not is detected;
the first judgment module is used for dismounting the laser calibrator and the laser stroke receiving equipment and mounting ultrasonic detection equipment on the outer surface of the high-temperature furnace tube if the stroke track is detected to be not disconnected;
the acquisition module is used for acquiring the waveform of the metal layer in the high-temperature furnace tube through a plurality of groups of high-frequency ultrasonic probes in different installation modes in the ultrasonic detection equipment, and the waveform presents different ripple states when the ultrasonic waves encounter cracks and do not encounter cracks;
the analysis module is used for conveying the acquired waveforms to information processing equipment, transmitting the oscillogram to the display equipment after sorting, and detecting the damage state of the high-temperature furnace tube by analyzing a plurality of groups of oscillograms;
the second judgment module is used for judging that the high-temperature furnace tube has no crack if the change amplitude of the wave shape in the oscillogram is detected to be stable, and operating the second detection module;
and the second detection module is used for moving the ultrasonic detection equipment on the outer surface of the high-temperature furnace tube through the moving mechanism on the ultrasonic detection equipment, repeatedly operating the acquisition module, and sequentially detecting other areas of the high-temperature furnace tube until the whole high-temperature furnace tube completes ultrasonic detection.
9. The system for high temperature furnace tube condition evaluation of claim 8, wherein the acquisition module is further configured to:
the high-frequency ultrasonic probes are four groups, the waveforms of the metal layer in the high-temperature furnace tube are collected through the four groups of high-frequency ultrasonic probes in different installation modes, and the frequencies of the four groups of high-frequency ultrasonic probes are the same.
10. The system for high temperature furnace tube condition evaluation of claim 8, wherein the ripple condition comprises a plateau condition and an amplitude condition;
wherein the steady state indicates that the high temperature furnace tube has no cracks, and the amplitude state indicates that the high temperature furnace tube has cracks.
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Citations (11)
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