A method, system, apparatus, and storage medium for determining that a water soluble paper plug caused a boiler tube explosion

Abstract

The application discloses a kind of methods, systems, devices and storage medium for determining that water-soluble paper blockage causes boiler tube burst, belong to boiler operation and maintenance technical field.Get the start-stop time of unit before boiler tube burst, and judge whether the time interval from the last unit startup and grid connection when tube burst occurs is less than the preset time;Get the last unit shutdown maintenance project, and judge whether the pipe ring that occurs tube burst has been subjected to pipe cutting and welding operation;Get the on-site image information of boiler tube burst, and judge whether the failure mode is short-time overheating tube burst.If the above determination results are all yes, then determine that boiler tube burst is caused by water-soluble paper blockage;If no, then it cannot be determined that boiler tube burst is caused by water-soluble paper blockage.The application can quickly and accurately determine whether tube burst is caused by water-soluble paper as foreign matter blocking boiler pipe, thereby winning valuable time for unit rapid repair, and avoiding the recurrence of similar accidents.

Description

Technical Field

[0001] This invention belongs to the field of boiler operation and maintenance technology, and specifically relates to a method, system, device and storage medium for determining boiler tube rupture caused by water-soluble paper blockage. Background Technology

[0002] Foreign object blockage is one of the main causes of boiler tube overheating and rupture in thermal power units, leading to unscheduled unit shutdowns. This is especially true during the installation, commissioning, and operation phases, where over half of tube ruptures are due to foreign object blockage. During maintenance after unit commissioning, foreign objects may also remain inside the boiler tubes or accumulate scale from the inner wall, causing ruptures. Common types of foreign objects are varied, including shavings, scale, water-soluble paper, and steel balls. However, these objects are often carried out of the rupture site by leaking steam during a rupture, making them difficult to detect or identify.

[0003] The main function of water-soluble paper is to prevent high-temperature oxidation of the inner wall of boiler tubes during argon arc welding. By sealing both ends of the boiler tubes with water-soluble paper, airflow inside the tubes is obstructed, preventing oxidation. Improper use of water-soluble paper can lead to boiler tube blockage, potentially causing tube rupture after unit startup.

[0004] When conducting failure analysis on the causes of boiler tube rupture, it is often difficult to determine whether the rupture is due to foreign object blockage and overheating caused by installation or maintenance, or improper operation and overheating. This makes it difficult to find the cause of the tube rupture and prevent similar accidents from happening again. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a method, system, apparatus, and storage medium for determining whether boiler tube rupture is caused by water-soluble paper blockage. This method can quickly and accurately determine whether the rupture is caused by water-soluble paper acting as a foreign object blocking the boiler tube, thereby gaining valuable time for rapid unit repair and preventing the recurrence of similar accidents.

[0006] This invention is achieved through the following technical solution:

[0007] This invention discloses a method for determining whether water-soluble paper blockage causes boiler tube rupture, comprising:

[0008] S1: Obtain the start-up and shutdown time of the unit before the boiler tube rupture, and determine whether the time interval between the tube rupture and the last unit start-up and grid connection is less than the preset time.

[0009] S2: Obtain the items from the unit's last shutdown maintenance and determine whether the pipe ring where the pipe burst occurred underwent pipe cutting and welding operations;

[0010] S3: Obtain on-site image information of boiler tube rupture and determine whether the failure mode is short-term overheating tube rupture;

[0011] S4: If the results of S1, S2 and S3 are all yes, then it is determined that the boiler tube rupture was caused by water-soluble paper blockage; if no, it cannot be determined that the boiler tube rupture was caused by water-soluble paper blockage.

[0012] Preferably, in S1, the start-up and shutdown time of the unit before the boiler tube rupture is obtained by the unit's central control system.

[0013] Preferably, in S1, the preset time is 72 hours.

[0014] Preferably, in S2, if the pipe ring where the pipe burst has undergone pipe cutting and welding operations, it is determined that foreign object prevention measures should be taken during the pipe cutting and welding operations.

[0015] More preferably, the foreign object prevention treatment involves sealing the pipe with water-soluble paper.

[0016] Preferably, in S3, the determination of whether the failure mode is short-term overheating and tube rupture is based on a comprehensive judgment of the appearance and morphology of the ruptured tube location and the tube diameter.

[0017] More preferably, the appearance of the short-term overheating burst tube is characterized by a large opening at the burst point, significant thinning of the wall thickness at the edge of the burst point, and multiple small longitudinal cracks on the outer wall; the pipe diameter is characterized by an excessive expansion value at the burst point and signs of expansion in the pipe diameter near the burst point.

[0018] This invention discloses a system for determining boiler tube rupture caused by water-soluble paper blockage, comprising:

[0019] The time factor acquisition and judgment module acquires the start-up and shutdown time of the unit before the boiler tube rupture and judges whether the time interval between the tube rupture and the last unit start-up and grid connection is less than the preset time.

[0020] The operation factor acquisition and judgment module acquires the items from the unit's last shutdown maintenance and determines whether the pipe ring that ruptured had undergone pipe cutting and welding operations.

[0021] The feature factor acquisition and judgment module acquires on-site image information of boiler tube rupture and determines whether the failure mode is short-term overheating tube rupture.

[0022] The boiler tube rupture cause determination module determines whether the boiler tube rupture was caused by water-soluble paper blockage based on the judgment results of the time factor acquisition and judgment module, the operation factor acquisition and judgment module, and the characteristic factor acquisition and judgment module.

[0023] The present invention discloses a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above-described method for determining that water-soluble paper blockage causes boiler tube rupture.

[0024] The present invention discloses a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the above-described method for determining that water-soluble paper blockage causes boiler tube rupture.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects:

[0026] This invention discloses a method for determining whether a boiler tube rupture is caused by water-soluble paper blockage. This method comprehensively considers three factors: the time interval between the rupture and the previous unit startup and grid connection, the maintenance items during the previous shutdown, and images of the rupture site. Combining technical elements and practical experience, it makes a comprehensive judgment, enabling a rapid, accurate, and effective identification of boiler tube ruptures caused by water-soluble paper blockage. This method can quickly determine on-site that the cause of the boiler tube rupture is water-soluble paper blockage, overcoming the weakness of long sampling and laboratory dissection analysis times. This saves valuable time for rapid unit repair, prevents the recurrence of similar accidents, and provides strong support for the planning and continuous quality improvement of power plant installation and maintenance, demonstrating promising application prospects.

[0027] Furthermore, in S1, the preset time is 72 hours. Generally, a pipe burst that occurs within this time can be basically determined to be caused by a foreign object blocking the pipe.

[0028] Furthermore, in S2, if the pipe ring where the pipe burst has undergone pipe cutting and welding operations, it is determined that foreign object prevention measures were taken during the pipe cutting and welding operations, and that the foreign object prevention measures are to use water-soluble paper to seal the pipe, so as to further eliminate the possibility of other foreign objects blocking the pipe.

[0029] Furthermore, in S3, the determination of whether the failure mode is short-term overheating and tube rupture is based on a comprehensive judgment of the appearance and morphology of the ruptured tube location and the tube diameter characteristics, which proves the accuracy of the failure mode determination.

[0030] The present invention discloses a system for determining boiler tube rupture caused by water-soluble paper blockage. The system is simple to construct, can be well compatible with existing automation systems, and has good application prospects. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the method flow of the present invention;

[0032] Figure 2 This is a system configuration diagram of the present invention;

[0033] Figure 3 Macroscopic view of the actual site of a boiler tube rupture. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. These descriptions are intended to explain the invention and not to limit it.

[0035] like Figure 1 The method of the present invention for determining boiler tube rupture caused by water-soluble paper blockage includes:

[0036] S1: Obtain the start-up and shutdown time of the unit before the boiler tube rupture, and determine whether the time interval between the rupture and the last unit start-up and grid connection is less than a preset time. The start-up and shutdown time of the unit before the boiler tube rupture is obtained by the unit's central control system. The preset time is 72 hours.

[0037] S2: Obtain the items from the unit's last shutdown maintenance and determine whether the pipe coil where the pipe rupture occurred underwent cutting and welding operations. If the pipe coil where the rupture occurred underwent cutting and welding operations, confirm that foreign object prevention measures were taken during the cutting and welding operations. Foreign object prevention measures involve sealing the pipe with water-soluble paper.

[0038] S3: Acquire on-site image information of the boiler tube rupture and determine whether the failure mode is short-term overheating rupture. The determination of whether the failure mode is short-term overheating rupture is based on a comprehensive assessment of the appearance and diameter characteristics of the ruptured tube location. For example... Figure 3 The morphological characteristics of short-term overheating tube rupture are: large opening of the rupture port, significant thinning of the wall thickness at the edge of the rupture port, and multiple small longitudinal cracks on the outer wall; the pipe diameter characteristics are: the expansion value at the rupture port exceeds the standard, and there are signs of expansion in the pipe diameter near the rupture port.

[0039] S4: If the results of S1, S2 and S3 are all yes, then it is determined that the boiler tube rupture was caused by water-soluble paper blockage, and no laboratory dissection test analysis is required; if no, then it cannot be determined that the boiler tube rupture was caused by water-soluble paper blockage, and subsequent laboratory dissection test analysis is required.

[0040] like Figure 2 The present invention discloses a system for determining boiler tube rupture caused by water-soluble paper blockage, comprising:

[0041] The time factor acquisition and judgment module acquires the start-up and shutdown time of the unit before the boiler tube rupture and judges whether the time interval between the tube rupture and the last unit start-up and grid connection is less than the preset time.

[0042] The operation factor acquisition and judgment module acquires the items from the unit's last shutdown maintenance and determines whether the pipe ring that ruptured had undergone pipe cutting and welding operations.

[0043] The feature factor acquisition and judgment module acquires on-site image information of boiler tube rupture and determines whether the failure mode is short-term overheating tube rupture.

[0044] The boiler tube rupture cause determination module determines whether the boiler tube rupture was caused by water-soluble paper blockage based on the judgment results of the time factor acquisition and judgment module, the operation factor acquisition and judgment module, and the characteristic factor acquisition and judgment module.

[0045] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method of determining that water-soluble paper blockage causes boiler tube rupture as described in the present invention.

[0046] The method for determining boiler tube rupture caused by water-soluble paper blockage according to the present invention can be implemented in a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can be implemented as a computer program product on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-readable program code. If the method for determining boiler tube rupture caused by water-soluble paper blockage according to the present invention is implemented as a software functional unit and sold or used as a standalone product, it can be stored in a computer-readable storage medium.

[0047] Based on this understanding, in an exemplary embodiment, a computer-readable storage medium is also provided. The present invention implements all or part of the processes in the methods of the above embodiments, or it can be implemented by a computer program instructing related hardware. The computer program can be stored in the computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable storage medium includes permanent and non-permanent, removable and non-removable media, and information storage can be implemented by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. It should be noted that the content contained in the computer-readable medium can be appropriately added or subtracted according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals. The computer storage medium can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO)), optical storage (e.g., CD, DVD, BD, HVD), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)).

[0048] In an exemplary embodiment, a computer device is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the method for determining that water-soluble paper blockage causes a boiler tube rupture. The processor may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0049] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0050] The above description is merely a specific embodiment of the present invention. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for determining whether water-soluble paper blockage causes boiler tube rupture, characterized in that, include: S1: Obtain the start-up and shutdown time of the unit before the boiler tube rupture, and determine whether the time interval between the tube rupture and the last unit start-up and grid connection is less than the preset time. S2: Obtain the items from the unit's last shutdown maintenance and determine whether the pipe ring where the pipe burst occurred underwent pipe cutting and welding operations; S3: Obtain on-site image information of boiler tube rupture and determine whether the failure mode is short-term overheating tube rupture; S4: If the judgment results of S1, S2 and S3 are all yes, then it is determined that the boiler tube rupture was caused by water-soluble paper blockage; if not all of them are yes, then it cannot be determined that the boiler tube rupture was caused by water-soluble paper blockage.

2. The method for determining boiler tube rupture caused by water-soluble paper blockage according to claim 1, characterized in that, In S1, the start-up and shutdown time of the unit before the boiler tube rupture is obtained by the unit's central control system.

3. The method for determining boiler tube rupture caused by water-soluble paper blockage according to claim 1, characterized in that, In S1, the preset time is 72 hours.

4. The method for determining boiler tube rupture caused by water-soluble paper blockage according to claim 1, characterized in that, In S2, if the pipe ring where the pipe burst has undergone pipe cutting and welding operations, it is confirmed that foreign object prevention measures were taken during the pipe cutting and welding operations.

5. The method for determining boiler tube rupture caused by water-soluble paper blockage according to claim 4, characterized in that, Foreign object prevention involves sealing the pipe with water-soluble paper.

6. The method for determining boiler tube rupture caused by water-soluble paper blockage according to claim 1, characterized in that, In S3, the failure mode is determined by comprehensively considering the appearance and diameter characteristics of the burst tube location to determine whether it is a short-term overheating burst tube.

7. The method for determining boiler tube rupture caused by water-soluble paper blockage according to claim 6, characterized in that, The morphological characteristics of short-term overheating tube rupture are: large opening of the rupture hole, significant thinning of the wall thickness at the edge of the rupture hole, and multiple small longitudinal cracks on the outer wall; the pipe diameter characteristics are: the expansion value at the rupture hole exceeds the standard, and there are signs of expansion in the pipe diameter near the rupture hole.

8. A system for determining boiler tube rupture caused by water-soluble paper blockage, characterized in that, include: The time factor acquisition and judgment module acquires the start-up and shutdown time of the unit before the boiler tube rupture and judges whether the time interval between the tube rupture and the last unit start-up and grid connection is less than the preset time. The operation factor acquisition and judgment module acquires the items from the unit's last shutdown maintenance and determines whether the pipe ring that ruptured had undergone pipe cutting and welding operations. The feature factor acquisition and judgment module acquires on-site image information of boiler tube rupture and determines whether the failure mode is short-term overheating tube rupture. The boiler tube rupture cause determination module determines whether the boiler tube rupture was caused by water-soluble paper blockage based on the judgment results of the time factor acquisition and judgment module, the operation factor acquisition and judgment module, and the characteristic factor acquisition and judgment module.

9. A computer device, characterized in that, The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, performs the steps of the method for determining that water-soluble paper blockage causes boiler tube rupture as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the method for determining a boiler tube rupture caused by water-soluble paper blockage as described in any one of claims 1 to 7.

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