CN115563762A - Early warning method, device and equipment for tube panel state of heating surface and storage medium - Google Patents
Early warning method, device and equipment for tube panel state of heating surface and storage medium Download PDFInfo
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- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
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- G06F2113/14—Pipes
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Abstract
The application discloses a method, a device, equipment and a storage medium for early warning of the state of a tube panel of a heating surface, wherein a tube panel is divided into a plurality of tube panel nodes, a plurality of inner wall temperature information corresponding to the tube panel nodes and data information of a control system are obtained, and a plurality of outer wall temperature information corresponding to the tube panel nodes are calculated; calculating a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information and the data information of the control system; obtaining a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the oxide skin generation thicknesses, a preset first critical thickness value and a preset second critical thickness value; when any one of the multiple oxide skin accumulation thicknesses reaches a preset accumulation thickness value, generating early warning information corresponding to the preset accumulation thickness value. The method and the device can monitor the state of the tube panel of the high-temperature heating surface in real time, and effectively reduce the occurrence of tube panel explosion and leakage accidents.
Description
Technical Field
The application relates to the technical field of safety detection, in particular to a method, a device, equipment and a storage medium for early warning of a tube panel state of a heating surface.
Background
With the rapid development of electric power construction, the proportion of non-petrochemical power generation capacity in the total power generation capacity in China is increased, and a thermal power generating unit is developed to a peak shaving unit, so that a high-temperature heating surface of a boiler is in a severe and variable operation condition for a long time, the phenomenon of overtemperature of the pipe wall frequently occurs, the pipe panel explosion and leakage accident is caused, the economic benefit of a power plant is influenced, the personal safety is threatened, and even the safe and stable operation of a power grid is influenced.
In the prior art, under the condition that a boiler stops working, the state of a tube panel of a high-temperature heating surface is evaluated by detecting tube wall corrosion, abrasion, fatigue, quality defects and the like, and whether the tube panel of the boiler has hidden danger of explosion leakage or not is further judged so as to reduce the generation of explosion leakage accidents of the tube panel.
However, the method in the prior art cannot evaluate the tube panel state of the high-temperature heating surface under the working condition of the boiler, so that the tube panel state of the high-temperature heating surface cannot be effectively monitored, and the occurrence of tube panel explosion and leakage accidents cannot be effectively reduced.
Disclosure of Invention
Based on the above problems, the present application provides a heating surface tube panel state early warning method, apparatus, device and storage medium.
The embodiment of the application discloses the following technical scheme:
the embodiment of the application provides a warning method for the state of a tube panel of a heating surface, which comprises the following steps:
dividing a tube panel into a plurality of tube panel nodes along the direction of a tube wall;
acquiring a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes and data information of a control system;
calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes according to the plurality of inner wall temperature information and the data information of the control system;
calculating a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information and the data information of the control system;
obtaining a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the oxide skin generation thicknesses, a preset first critical thickness value and a preset second critical thickness value;
and when any one of the plurality of oxide scale accumulation thicknesses reaches a preset accumulation thickness value, generating early warning information corresponding to the preset accumulation thickness value.
Further, the calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes according to the plurality of inner wall temperature information and the data information of the control system includes:
obtaining the plurality of heat flux densities through numerical simulation calculation according to the plurality of inner wall temperature information and the data information of the control system;
and calculating the temperature information of the outer walls according to the temperature information of the inner walls, the data information of the control system and the heat flux densities.
Further, according to the temperature information of the plurality of outer walls and the data information of the control system, calculating the generated thickness of the plurality of oxide scales corresponding to the plurality of tube panel nodes, includes:
performing unit conversion on the plurality of outer wall temperature information to obtain a plurality of converted outer wall temperature information;
and calculating a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of converted outer wall temperature information and the data information of the control system.
Further, obtaining a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses, a preset first critical thickness value and a preset second critical thickness value includes:
determining a plurality of first shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the first critical thickness values;
determining a plurality of second shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the second critical thickness values;
and obtaining the plurality of oxide skin accumulation thicknesses according to the first critical thickness value, the second critical thickness value, the plurality of first shedding times and the plurality of second shedding times.
Further, the obtaining of the temperature information of the plurality of inner walls corresponding to the plurality of tube panel nodes includes:
acquiring inner wall temperature information of a tube panel opening and total heat absorption capacity of the tube panel;
and obtaining the plurality of inner wall temperature information according to the inner wall temperature information of the tube panel opening, the total heat absorption capacity of the tube panel and the position information of the plurality of tube panel nodes.
Further, when any one of the plurality of scale deposit thicknesses reaches a preset deposit thickness value, generating early warning information corresponding to the preset deposit thickness value, including:
if any one of the oxide skin accumulation thicknesses reaches a first accumulation thickness value, generating early warning information to be cleaned;
and if any one of the oxide skin accumulation thicknesses reaches the second accumulation thickness value, generating early warning information to be overhauled.
Further, still include:
generating a plurality of display information corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information, the plurality of outer wall temperature information and the plurality of oxide skin generation thicknesses;
and displaying the display information according to the display information.
The embodiment of the present application further provides an early warning device for a heated surface tube panel state, including:
the device comprises a dividing module, an obtaining module, a first calculating module, a second calculating module, an obtaining module and a generating module;
the dividing module is used for dividing the tube panel into a plurality of tube panel nodes along the tube wall direction;
the acquisition module is used for acquiring a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes and data information of a control system;
the first calculation module is used for calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes according to the plurality of inner wall temperature information and the data information of the control system;
the second calculation module is configured to calculate, according to the temperature information of the outer walls and the data information of the control system, a plurality of oxide skin generation thicknesses corresponding to the tube panel nodes;
the obtaining module is used for obtaining a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses, a preset first critical thickness value and a preset second critical thickness value;
and the generation module is used for generating the early warning information corresponding to the preset accumulation thickness value when any one of the multiple oxide skin accumulation thicknesses reaches the preset accumulation thickness value.
Further, the first computing module includes:
a first obtaining unit and a first calculating unit;
the first obtaining unit is used for obtaining the plurality of heat flux densities through numerical simulation calculation according to the plurality of inner wall temperature information and the data information of the control system;
the first calculating unit is used for calculating the temperature information of the outer walls according to the temperature information of the inner walls, the data information of the control system and the heat flux densities.
Further, the second computing module includes:
a second obtaining unit and a second calculating unit;
the second obtaining unit is configured to perform unit conversion on the multiple pieces of outer wall temperature information to obtain multiple pieces of converted outer wall temperature information;
and the second calculation unit is used for calculating the multiple oxide skin generation thicknesses corresponding to the multiple tube panel nodes according to the multiple converted outer wall temperature information and the data information of the control system.
Further, the obtaining module includes:
a first determining unit, a second determining unit and a third obtaining unit;
the first determining unit is configured to determine a plurality of first shedding times corresponding to the plurality of tube panel nodes according to the plurality of scale formation thicknesses and the first critical thickness value;
the second determining unit is configured to determine a plurality of second shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the second critical thickness value;
the third obtaining unit is configured to obtain the plurality of oxide scale deposit thicknesses according to the first critical thickness value, the second critical thickness value, the plurality of first shedding times, and the plurality of second shedding times.
Further, the obtaining module includes:
an acquisition unit and a fourth acquisition unit;
the acquisition unit is used for acquiring the inner wall temperature information of a tube panel opening, the total heat absorption capacity of the tube panel and the data information of the control system;
the fourth obtaining unit is configured to obtain the plurality of inner wall temperature information according to the inner wall temperature information of the tube panel opening, the total heat absorption capacity of the tube panel, and the position information of the plurality of tube panel nodes.
Further, the generating module is configured to:
if any one of the oxide skin accumulation thicknesses reaches a first accumulation thickness value, generating early warning information to be cleaned;
and if any one of the oxide skin accumulation thicknesses reaches the second accumulation thickness value, generating early warning information to be overhauled.
Further, still include:
a generating unit and a display unit;
the generating unit is used for generating a plurality of display information corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information, the plurality of outer wall temperature information and the plurality of oxide skin generating thicknesses;
the display unit is used for displaying the display information according to the display information.
An embodiment of the present application further provides a computer device, where the computer device includes a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is used for executing the steps of the early warning method for the tube panel state of the heated surface according to the instructions in the program codes.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for warning a state of a heated surface tube panel as described above is implemented.
Compared with the prior art, the method has the following beneficial effects:
this application is through with the tube panel along the pipe wall direction, divide into a plurality of tube panel nodes, according to a plurality of inner wall temperature information that a plurality of tube panel nodes correspond and control system's data information, calculate a plurality of outer wall temperature information that a plurality of tube panel nodes correspond, calculate a plurality of cinder that a plurality of tube panel nodes correspond according to a plurality of outer wall temperature information again and generate thickness, later according to a plurality of cinder generation thickness, obtain a plurality of cinder that a plurality of tube panel nodes correspond and pile up thickness, work as when any arrival is piled up thickness value in a plurality of cinder, generate predetermine the early warning information that the thickness value corresponds of piling up. According to the method and the device, the thickness of the accumulated oxide scales corresponding to the multiple tube panel nodes can be obtained in real time, the accumulated oxide scales are used as the basis for evaluating the tube panel state of the heating surface, and corresponding early warning information is generated when any one of the accumulated oxide scales reaches a preset accumulated thickness value, so that the tube panel state of the high-temperature heating surface can be monitored in real time, and the explosion and leakage accidents of the tube panel are effectively reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a flowchart of an early warning method for a heated surface tube panel state according to an embodiment of the present disclosure;
fig. 2 is a flowchart of a method for obtaining a scale deposit thickness according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an early warning device for a heated surface tube panel state according to an embodiment of the present application.
Detailed Description
As described above, how to effectively reduce the occurrence of tube panel explosion and leakage currently becomes a technical problem to be solved by those skilled in the art.
The inventor finds that in the prior art, the state of the tube panel of the high-temperature heating surface can be evaluated only by detecting tube wall corrosion, abrasion, fatigue, quality defects and the like under the condition that the boiler stops working, and then whether the tube panel of the boiler has the hidden danger of explosion and leakage is judged. Because the state of the tube panel of the high-temperature heating surface can not be evaluated under the working condition of the boiler, when the overhaul is not in time or the state of the tube panel is abnormal, the state of the tube panel can not be obtained in time, and the explosion and leakage accidents of the tube panel can not be effectively reduced.
According to the method and the device, the multiple oxide skins are used for accumulating the thickness as the basis for evaluating the state of the heating surface tube panel, corresponding early warning information is generated when any one oxide skin accumulation thickness reaches a preset accumulation thickness value in the multiple oxide skin accumulation thicknesses, and before the heating surface tube panel is abnormal, the abnormal state or the existing hidden danger of the heating surface tube panel can be found in time, so that the explosion and leakage accidents of the tube panel are effectively reduced.
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Referring to fig. 1, the figure is a flowchart of an early warning method for a heated surface tube panel state according to an embodiment of the present disclosure. The embodiment of the application provides an early warning method for the tube panel state of a heating surface, which comprises S101-S106.
S101: and dividing the tube panel into a plurality of tube panel nodes along the tube wall direction.
Specifically, in order to obtain a more accurate tube panel state of the heating surface, the tube panel may be divided into a plurality of tube panel nodes along the flow direction of the working medium in the tube. For example, 128 tube panel nodes can be obtained by dividing the tube panel into 128 parts along the flowing direction of the working medium in the tube.
S102: and acquiring a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes and data information of a control system.
Specifically, a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes may be acquired by a temperature measurement system. The temperature measuring system can be composed of a heat collecting block, a protective sleeve, an armored thermocouple, a temperature intelligent front end and the like. The data information of the control system comprises unit load, coal quality entering the furnace, coal feeding quantity, steam temperature, steam pressure and the like.
S103: and calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes according to the plurality of inner wall temperature information and the data information of the control system.
And obtaining a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes so as to obtain a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes through subsequent calculation.
S104: and calculating the generation thicknesses of the oxide scales corresponding to the tube panel nodes according to the temperature information of the outer walls and the data information of the control system.
Scale, a corrosion product formed by oxidation of a metal surface at high temperatures. Under the condition of high-temperature oxygen-containing steam, the oxide skin in the tube panel wall is increased rapidly, the expansion coefficient of the oxide skin and the austenitic stainless steel parent metal is large in difference, when the oxide skin generates a certain value, the oxide skin can be peeled off from the metal surface, the tube panel wall is thinned continuously, the pressure bearing capacity of the tube panel is weakened, and the service life of the tube panel is shortened. According to the temperature information of the outer walls and the data information of the control system, the oxide skin generation thicknesses corresponding to the tube panel nodes can be obtained. Through a plurality of scales formation thickness, can know the heating surface tube panel state, be convenient for in time discover hidden danger, in time overhaul, be convenient for simultaneously follow-up calculation obtain a plurality of scales that a plurality of tube panel nodes correspond pile up thickness.
S105: and obtaining a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the oxide skin generation thicknesses, the preset first critical thickness values and the preset second critical thickness values.
The scale cinder that peels off can constantly accumulate in tube panel bottom, blocks up the pipeline, and then reduces working medium heat transfer ability for tube panel wall intensification, causes the tube panel to explode and leak. The multiple oxide skin accumulation thicknesses corresponding to the multiple tube panel nodes are obtained, the tube panel state of the heating surface can be monitored, and meanwhile, the corresponding early warning information is generated according to the oxide skin accumulation thicknesses in the follow-up process.
S106: and when any one of the plurality of oxide scale accumulation thicknesses reaches a preset accumulation thickness value, generating early warning information corresponding to the preset accumulation thickness value.
Pile up the basis of thickness as judging the tube panel state with the cinder, pile up thickness arrival at any cinder and predetermine when piling up the thickness value, generate predetermine the early warning information who piles up the thickness value and correspond, according to early warning information, in time overhaul the heating surface tube panel to effectively reduce the production of tube panel explosion and leakage accident.
The method provided by the embodiment of the application can obtain the accumulated thicknesses of the oxide scales corresponding to the tube panel nodes in real time, the accumulated thicknesses of the oxide scales are used as the basis for evaluating the state of the tube panel of the heating surface, corresponding early warning information is generated when any one of the accumulated thicknesses of the oxide scales reaches a preset accumulated thickness value, the state of the tube panel of the high-temperature heating surface can be accurately evaluated, the tube panel of the heating surface can be timely overhauled or the combustion in a furnace can be adjusted according to the early warning information, and the explosion and leakage accidents of the tube panel can be effectively reduced.
Further, S103 may be realized by S201 to S202.
S201: and obtaining the plurality of heat flux densities through numerical simulation calculation according to the plurality of inner wall temperature information and the data information of the control system.
Specifically, different conditions, different coal qualities, different mill combination modes and the like may cause different heat flux densities, and a plurality of heat flux densities corresponding to a plurality of tube panel nodes are obtained so as to calculate a plurality of pieces of outer wall temperature information in the following.
S202: and calculating the temperature information of the plurality of outer walls according to the temperature information of the plurality of inner walls, the data information of the control system and the plurality of heat flux densities.
Specifically, edge calculation may be employed, and a plurality of pieces of outer wall temperature information are calculated by equations (1) to (2),
wherein, twbi is the temperature information of the outer wall, and the unit is; tgzi is inner wall temperature information, the unit is ℃, and beta is the ratio of the outer diameter to the inner diameter of the tube panel; d is the outer diameter of the tube panel, and the unit is mm; delta is the wall thickness of the tube in mm; qw is the heat flow density in W/m 2 (ii) a Mu is a thermal diffusivity; alpha is alpha 2 Is the heat release coefficient in the tube, and has the unit of W/(m) 2 K); λ M is the thermal conductivity of the pipe wall, expressed in W/(m.K), and its magnitude is related to the steel and the temperature.
Further, S104 may be implemented by S301 to S302.
S301: and performing unit conversion on the plurality of outer wall temperature information to obtain a plurality of converted outer wall temperature information.
Specifically, the plurality of pieces of outer wall temperature information are converted into kelvin temperatures, and a plurality of pieces of converted outer wall temperature information are obtained.
S302: and calculating a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of converted outer wall temperature information and the data information of the control system.
Specifically, a plurality of scale growing thicknesses can be obtained by calculation of the formula (3),
wherein X is the oxide scale formation thickness in the unit of μm; a is an Arrhenius constant in μm 2 H; q is process rate control activation energy, and the unit is J/mol; r is a gas constant, R = 8.314J/(mol · K); t is the outer wall temperature information after conversion, and the unit is K; t is t h The unit is the unit of h for the effective running time of the unit. A. Q is related to the composition of the metal composite material, for example, when the tube panel is made of high-carbon austenitic stainless steel (TP 347H) containing niobium, chromium and nickel, A =105 μm 2 /h，Q＝85500J/mol。
Further, S105 can be implemented by S401 to S403, referring to fig. 2, which is a flowchart of a method for obtaining a scale deposit thickness according to an embodiment of the present disclosure.
S401: and determining a plurality of first shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the first critical thickness value.
S402: and determining a plurality of second shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the second critical thickness values.
S403: and obtaining a plurality of oxide skin accumulation thicknesses according to the first critical thickness value, the second critical thickness value, the first shedding times and the second shedding times.
Specifically, a plurality of scale deposit thicknesses can be obtained by the formula (4),
wherein, the sigma X is the accumulated thickness of oxide skin; x 1 The critical thickness value is a first critical thickness value, and specifically can refer to a critical thickness value when the oxide skin of the high-temperature heating surface begins to peel off; n is i The first shedding times can specifically refer to the shedding times when the oxide skin reaches a critical thickness value within the effective operation time; x 2 The second critical thickness value can be specifically a critical thickness value at which the scale on the high-temperature heating surface begins to peel off when the furnace is started, shut down or the load changes; n is a radical of an alkyl radical j The second shedding times can specifically refer to the shedding times when the oxide skin reaches a critical thickness value during start-up, shutdown or load change in effective operation time; m is the number of calculation nodes from the entrance to the exit of the tube panel; xi is the coefficient which is not carried to the next node along with the flow of the working medium.
Further, a plurality of inner wall temperature information in S101 may be implemented through S501 to S502.
S501: and acquiring the inner wall temperature information of the tube panel opening and the total heat absorption capacity of the tube panel.
Specifically, the temperature measuring system can be installed at the tube panel opening of the high-temperature heating surface to measure the inner wall temperature information of the tube panel opening. Furthermore, because the working medium temperature of the tube panel opening is approximate to the inner wall temperature information of the tube panel opening, the inner wall temperature information of the tube panel opening can be obtained by measuring the working medium temperature of the tube panel opening.
S502: and obtaining the plurality of inner wall temperature information according to the inner wall temperature information of the tube panel opening, the total heat absorption capacity of the tube panel and the position information of the plurality of tube panel nodes.
Specifically, according to the inner wall temperature information of the tube panel opening, the total heat absorption capacity of the tube panel and the position information of the plurality of tube panel nodes, the plurality of inner wall temperature information can be obtained through calculation, and therefore the equipment cost can be reduced under the condition that the measurement accuracy is guaranteed.
Further, the step S106 may be specifically implemented by the following method:
if any one of the oxide skin accumulation thicknesses reaches a first accumulation thickness value, generating early warning information to be cleaned;
and if any one of the oxide skin accumulation thicknesses reaches the second accumulation thickness value, generating early warning information to be overhauled.
Specifically, for example, when the material of the pipe is TP347H and the accumulated thickness of the oxide scale is larger than 17.272mm, the early warning information to be cleaned is generated; and when the accumulated thickness of the oxide skin is more than 25.4mm, generating early warning information to be overhauled. Therefore, the tube panel can be cleaned or overhauled in time according to the early warning information to be cleaned or the early warning information to be overhauled, and the explosion and leakage accidents of the tube panel are effectively reduced.
Further, the method also comprises S601-S602:
s601: and generating a plurality of display information corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information, the plurality of outer wall temperature information and the plurality of oxide skin generation thicknesses.
Specifically, the display information includes outer wall temperature information, and scale formation thickness.
S602: and displaying the display information according to the display information.
Particularly, the display information is displayed, so that the tube panel state of the high-temperature heating surface can be monitored in real time conveniently, the explosion and leakage accidents of the tube panel are effectively reduced, and meanwhile, the data support for adjusting the combustion in the furnace and maintaining the tube panel is facilitated.
The embodiment of the present application further provides an early warning device for a state of a heated surface tube panel, refer to fig. 3, which is a schematic structural diagram of the early warning device for a state of a heated surface tube panel provided in the embodiment of the present application. The specific implementation manner of the method is consistent with the implementation manner and the achieved technical effect described in the embodiment of the method, and details are not repeated.
A warning device for the state of a tube panel of a heating surface comprises:
a dividing module 1101, an obtaining module 1102, a first calculating module 1103, a second calculating module 1104, an obtaining module 1105 and a generating module 1106;
the dividing module 1101 is configured to divide the tube panel into a plurality of tube panel nodes along the tube wall direction;
the obtaining module 1102 is configured to obtain a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes and data information of the control system;
the first calculating module 1103 is configured to calculate, according to the plurality of inner wall temperature information and the data information of the control system, a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes;
the second calculating module 1104 is configured to calculate, according to the temperature information of the plurality of outer walls and the data information of the control system, a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes;
the obtaining module 1105 is configured to obtain a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses, a preset first critical thickness value, and a preset second critical thickness value;
the generating module 1106 is configured to generate the early warning information corresponding to the preset accumulation thickness value when any one of the multiple oxide skin accumulation thicknesses reaches the preset accumulation thickness value.
Further, the first computing module includes:
a first obtaining unit and a first calculating unit;
the first obtaining unit is used for obtaining the plurality of heat flux densities through numerical simulation calculation according to the plurality of inner wall temperature information and the data information of the control system;
the first calculating unit is used for calculating the temperature information of the outer walls according to the temperature information of the inner walls, the data information of the control system and the heat flux densities.
Further, the second computing module includes:
a second obtaining unit and a second calculating unit;
the second obtaining unit is configured to perform unit conversion on the plurality of pieces of outer wall temperature information to obtain a plurality of pieces of converted outer wall temperature information;
and the second calculating unit is used for calculating the multiple oxide skin generation thicknesses corresponding to the multiple tube panel nodes according to the multiple converted outer wall temperature information and the data information of the control system.
Further, the obtaining module includes:
a first determining unit, a second determining unit and a third obtaining unit;
the first determining unit is configured to determine, according to the multiple oxide skin generation thicknesses and the first critical thickness values, multiple first shedding times corresponding to the multiple tube panel nodes;
the second determining unit is configured to determine a plurality of second shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the second critical thickness value;
the third obtaining unit is configured to obtain the multiple oxide skin deposition thicknesses according to the first critical thickness value, the second critical thickness value, the multiple first shedding times, and the multiple second shedding times.
Further, the obtaining module includes:
an acquisition unit and a fourth acquisition unit;
the acquisition unit is used for acquiring the inner wall temperature information of a tube panel opening, the total heat absorption capacity of the tube panel and the data information of the control system;
the fourth obtaining unit is configured to obtain the information on the multiple inner wall temperatures according to the information on the inner wall temperature of the tube panel opening, the total heat absorption capacity of the tube panel, and the position information of the multiple tube panel nodes.
Further, the generating module is configured to:
if any one of the oxide skin accumulation thicknesses reaches a first accumulation thickness value, generating early warning information to be cleaned;
and if any one of the oxide skin accumulation thicknesses reaches the second accumulation thickness value, generating early warning information to be overhauled.
Further, still include:
a generating unit and a display unit;
the generating unit is used for generating a plurality of display information corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information, the plurality of outer wall temperature information and the plurality of oxide skin generating thicknesses;
the display unit is used for displaying the display information according to the display information.
To sum up, the device that this application embodiment provided can obtain a plurality of scales that a plurality of tube panel nodes correspond in real time and pile up thickness to a plurality of scales pile up thickness and are the foundation of aassessment heating surface tube panel state, when any reachs and presets the thickness value in a plurality of scales pile up thickness, generate corresponding early warning information, can accurately aassessment high temperature heating surface tube panel state, can in time overhaul the heating surface tube panel or adjust the burning in the stove according to early warning information, effectively reduce the production of tube panel explosion and leakage accident.
An embodiment of the present application further provides a computer device, where the computer device includes a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is used for executing the steps of the early warning method for the tube panel state of the heated surface according to the instructions in the program codes.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for warning a state of a heated surface tube panel are implemented as described above.
It should be noted that, in this specification, each embodiment is described in a progressive manner, and the same and similar parts between the embodiments are referred to each other, and each embodiment focuses on differences from other embodiments. In particular, for the apparatus, device and storage medium embodiments, since they are substantially similar to the method embodiments, they are described relatively simply, and reference may be made to some descriptions of the method embodiments for relevant points. The above-described embodiments of the apparatus, device, and storage medium are merely illustrative, and units described as separate components may or may not be physically separate, and components referred to as units may or may not be physical units, that is, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only one specific embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A warning method for the state of a tube panel of a heating surface is characterized by comprising the following steps:
dividing a tube panel into a plurality of tube panel nodes along the direction of a tube wall;
acquiring a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes and data information of a control system;
calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes according to the plurality of inner wall temperature information and the data information of the control system;
calculating a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information and the data information of the control system;
obtaining a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the oxide skin generation thicknesses, a preset first critical thickness value and a preset second critical thickness value;
and when any one of the plurality of oxide scale accumulation thicknesses reaches a preset accumulation thickness value, generating early warning information corresponding to the preset accumulation thickness value.
2. The method of claim 1, wherein calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes from the plurality of inner wall temperature information and the data information of the control system comprises:
obtaining the plurality of heat flux densities through numerical simulation calculation according to the plurality of inner wall temperature information and the data information of the control system;
and calculating the temperature information of the outer walls according to the temperature information of the inner walls, the data information of the control system and the heat flux densities.
3. The method of claim 1, wherein calculating a plurality of scale growth thicknesses for the plurality of tube panel nodes based on the plurality of outer wall temperature information and the data information from the control system comprises:
performing unit conversion on the plurality of outer wall temperature information to obtain a plurality of converted outer wall temperature information;
and calculating the generation thicknesses of the oxide scales corresponding to the tube panel nodes according to the converted outer wall temperature information and the data information of the control system.
4. The method of claim 1, wherein obtaining a plurality of scale deposit thicknesses corresponding to the plurality of tube panel nodes based on the plurality of scale growth thicknesses, the predetermined first critical thickness value, and the predetermined second critical thickness value comprises:
determining a plurality of first shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the first critical thickness values;
determining a plurality of second shedding times corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses and the second critical thickness values;
and obtaining the plurality of oxide skin accumulation thicknesses according to the first critical thickness value, the second critical thickness value, the plurality of first shedding times and the plurality of second shedding times.
5. The method of claim 1, wherein the obtaining a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes comprises:
acquiring inner wall temperature information of a tube panel opening and total heat absorption capacity of the tube panel;
and obtaining a plurality of inner wall temperature information according to the inner wall temperature information of the tube panel opening, the total heat absorption capacity of the tube panel and the position information of the tube panel nodes.
6. The method of claim 1, wherein the generating of the warning information corresponding to the preset accretion thickness value when any one of the plurality of scale accretion thicknesses reaches the preset accretion thickness value comprises:
if any one of the oxide skin accumulation thicknesses reaches a first accumulation thickness value, generating early warning information to be cleaned;
and if any one of the oxide skin accumulation thicknesses reaches the second accumulation thickness value, generating early warning information to be overhauled.
7. The method of any one of claims 1-6, further comprising:
generating a plurality of display information corresponding to the plurality of tube panel nodes according to the plurality of outer wall temperature information, the plurality of outer wall temperature information and the plurality of oxide skin generation thicknesses;
and displaying the display information according to the display information.
8. The utility model provides an early warning device of heating surface tube panel state which characterized in that includes:
the device comprises a dividing module, an obtaining module, a first calculating module, a second calculating module, an obtaining module and a generating module;
the dividing module is used for dividing the tube panel into a plurality of tube panel nodes along the tube wall direction;
the acquisition module is used for acquiring a plurality of inner wall temperature information corresponding to the plurality of tube panel nodes and data information of a control system;
the first calculation module is used for calculating a plurality of outer wall temperature information corresponding to the plurality of tube panel nodes according to the plurality of inner wall temperature information and the data information of the control system;
the second calculation module is configured to calculate, according to the temperature information of the plurality of outer walls and the data information of the control system, a plurality of oxide skin generation thicknesses corresponding to the plurality of tube panel nodes;
the obtaining module is configured to obtain a plurality of oxide skin accumulation thicknesses corresponding to the plurality of tube panel nodes according to the plurality of oxide skin generation thicknesses, a preset first critical thickness value and a preset second critical thickness value;
and the generation module is used for generating the early warning information corresponding to the preset accumulation thickness value when any one of the multiple oxide skin accumulation thicknesses reaches the preset accumulation thickness value.
9. A computer device, the computer device comprising a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the steps of a method for warning about a status of a heated surface tube panel according to any one of claims 1-7 according to instructions in the program code.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of a method for warning about a state of a heated surface tube panel as claimed in any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211192186.6A CN115563762A (en) | 2022-09-28 | 2022-09-28 | Early warning method, device and equipment for tube panel state of heating surface and storage medium |
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| CN202211192186.6A CN115563762A (en) | 2022-09-28 | 2022-09-28 | Early warning method, device and equipment for tube panel state of heating surface and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117495125A (en) * | 2023-11-03 | 2024-02-02 | 天津大学 | Wall temperature and oxide skin generation distribution prediction method for high-temperature heating surface of coal-fired boiler |
| CN117495125B (en) * | 2023-11-03 | 2024-05-24 | 天津大学 | Wall temperature and oxide skin generation distribution prediction method for high-temperature heating surface of coal-fired boiler |
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2022
- 2022-09-28 CN CN202211192186.6A patent/CN115563762A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117495125A (en) * | 2023-11-03 | 2024-02-02 | 天津大学 | Wall temperature and oxide skin generation distribution prediction method for high-temperature heating surface of coal-fired boiler |
| CN117495125B (en) * | 2023-11-03 | 2024-05-24 | 天津大学 | Wall temperature and oxide skin generation distribution prediction method for high-temperature heating surface of coal-fired boiler |
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