Method and device for monitoring blockage of fluid pipeline system

Abstract

The invention relates to the technical field of fluid pipeline system flow monitoring, and provides a method and device for monitoring blockage of a fluid pipeline system. The method comprises the steps that on the basis of the obtained current pipeline pressure and the opening degree of a regulating valve, a blockage monitoring mathematical model is adopted, and the theoretical fluid flow is obtained; according to the theoretical fluid flow, an alarm threshold value is set; if the obtained fluid instantaneous flow is smaller than an alarm threshold value, early warning is carried out; wherein the blockage monitoring mathematical model is Z = aX3 + bX2Y + cXY2 + dY3 + eX2 + fXY + gY2 + hX + iY + j; wherein Z is the theoretical fluid flow; x is the current pipeline pressure; y is the opening degree of the regulating valve; a, b, c, d, e, f, g, h, i and j are variable coefficients and are constant values. According to the invention, the operation condition of the fluid pipeline system can be monitored in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of flow monitoring of fluid pipeline systems, and in particular to a method and device for monitoring blockages in fluid pipeline systems. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] A large number of fluid pipeline systems with media such as steam, water, or liquid materials are used in the wire-making workshop. Its basic structure is as Figure 1 shown, including: a material tank (or upstream fluid pipeline), a stop valve, a regulating valve, a flow meter, a nozzle, and a pipeline. During the operation of the equipment, the pipeline system often experiences an instantaneous abnormal decrease in flow rate. The main reasons are as follows:

[0004] 1. The pipeline becomes blocked. Scale or material scale and other debris may adhere to the pipeline wall in the steam, water, or liquid material pipeline, blocking the pipeline and reducing the ability of steam, water, or liquid material to pass through;

[0005] 2. Pipeline components malfunction. The stop valve or regulating valve switch malfunctions and cannot be fully opened or closed; the flow meter detection malfunctions;

[0006] 3. The nozzle is blocked. The nozzle is blocked by scale or other solid impurities adhering to the inside.

[0007] During the operation of the equipment, if the pipeline blockage is not serious, the instantaneous flow rate of steam, water, or liquid material can compensate for the influence of the pipeline blockage through the opening of the regulating valve, making the instantaneous flow rate synchronized with the set flow rate. As the severity of the pipeline blockage increases, with the set flow rate remaining unchanged, the opening of the regulating valve will continuously increase. If it cannot be detected and processed in time, there will eventually be a failure phenomenon where the opening of the regulating valve reaches the maximum value while the instantaneous flow rate cannot reach the set value. Operators generally do not pay attention to the relationship between the opening of the regulating valve and the instantaneous flow rate, but the potential hidden danger of pipeline blockage already exists. Summary of the Invention

[0008] In order to solve the technical problems existing in the above background art, the present invention provides a method and device for monitoring blockages in fluid pipeline systems. The present invention provides a simple method that can monitor blockages in fluid pipeline systems through mathematical modeling, writing, and running corresponding control programs. It can real-time monitor the blockage trend of the pipeline system and issue a warning signal when the blockage degree reaches a set threshold to remind relevant personnel to check and process.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] The first aspect of the present invention provides a method for monitoring blockages in fluid pipeline systems.

[0011] A method for monitoring the blockage of a fluid pipeline system, comprising:

[0012] Based on the acquired current pipeline pressure and the opening degree of the regulating valve, using a blockage monitoring mathematical model to obtain the theoretical fluid flow rate;

[0013] Set an alarm threshold according to the theoretical fluid flow rate;

[0014] If the acquired instantaneous fluid flow rate is less than the alarm threshold, then give an early warning;

[0015] Wherein, the blockage monitoring mathematical model is:

[0016] Z = aX 3 + bX 2Y + cXY 2 + dY 3 + eX 2 + fXY + gY 2 + hX + iY + j

[0017] Wherein, Z is the theoretical fluid flow rate; X is the current pipeline pressure; Y is the opening degree of the regulating valve; a, b, c, d, e, f, g, h, i and j are variable coefficients, all of which are constant values.

[0018] Further, the setting of the alarm threshold according to the theoretical fluid flow rate includes: the alarm threshold is the product of the theoretical fluid flow rate and the threshold coefficient.

[0019] Further, the early warning includes: giving an alarm by driving an audible and visual alarm, and displaying an alarm message on the operation interface.

[0020] Further, the operation interface is used to display the current pipeline pressure, the opening degree of the regulating valve, the theoretical fluid flow rate, the threshold coefficient, the set threshold and the instantaneous fluid flow rate.

[0021] The second aspect of the present invention provides a device for monitoring the blockage of a fluid pipeline system.

[0022] A device for monitoring the blockage of a fluid pipeline system, comprising:

[0023] A theoretical fluid flow rate calculation unit, configured to obtain the theoretical fluid flow rate based on the acquired current pipeline pressure and the opening degree of the regulating valve, using a blockage monitoring mathematical model;

[0024] An alarm threshold calculation unit, configured to set an alarm threshold according to the theoretical fluid flow rate;

[0025] An early warning unit, configured to give an early warning if the acquired instantaneous fluid flow rate is less than the alarm threshold;

[0026] Among them, the blockage monitoring mathematical model is as follows:

[0027] Z = aX 3 + bX 2Y + cXY 2 + dY 3 + eX 2 + fXY + gY 2 + hX + iY + j

[0028] Among them, Z is the theoretical fluid flow rate; X is the current pipeline pressure; Y is the opening degree of the regulating valve; a, b, c, d, e, f, g, h, i, and j are variable coefficients, all of which are constant values.

[0029] Furthermore, setting an alarm threshold according to the theoretical fluid flow rate includes: the alarm threshold is the product of the theoretical fluid flow rate and the threshold coefficient.

[0030] Furthermore, the early warning includes: alarming by driving an audible and visual alarm, and displaying alarm information on the operation interface.

[0031] Furthermore, the operation interface is used to display the current pipeline pressure, the opening degree of the regulating valve, the theoretical fluid flow rate, the threshold coefficient, the set threshold, and the instantaneous fluid flow rate.

[0032] The third aspect of the present invention provides a computer-readable storage medium.

[0033] A computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, it implements the steps in the method for monitoring the blockage of a fluid pipeline system as described in the first aspect above.

[0034] The fourth aspect of the present invention provides a computer device.

[0035] A computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, it implements the steps in the method for monitoring the blockage of a fluid pipeline system as described in the first aspect above.

[0036] The fifth aspect of the present invention provides a computer program product or a computer program.

[0037] The present invention provides a computer program product or a computer program, which includes computer instructions stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the steps in the method for monitoring the blockage of a fluid pipeline system as described in the first aspect above.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0039] The present invention provides a method and device for monitoring the blockage of a fluid pipeline system, including: based on the acquired current pipeline pressure and regulating valve opening, using a blockage monitoring mathematical model to obtain the theoretical fluid flow rate; setting an alarm threshold according to the theoretical fluid flow rate; and giving an early warning if the acquired instantaneous fluid flow rate is less than the alarm threshold; capable of real-time monitoring of the operation of the fluid pipeline system, and avoiding the situation where serious blockage or complete blockage affects normal production. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0041] Figure 1 is a structural diagram of the fluid pipeline system shown in the present invention;

[0042] Figure 2 is a flowchart of the method for monitoring the blockage of the fluid pipeline system shown in the present invention;

[0043] Figure 3 is a structural diagram of the system for monitoring the blockage of the fluid pipeline system shown in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] The present invention will be further described below in conjunction with the drawings and embodiments.

[0045] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of the methods and systems according to various embodiments of the present disclosure. It should be noted that each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, and the module, program segment, or part of code may include one or more executable instructions for implementing the logical functions specified in each embodiment. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, or they may sometimes be executed in the reverse order, depending on the functions involved. Similarly, it should be noted that each block in the flowchart and / or block diagram, as well as the combination of blocks in the flowchart and / or block diagram, may be implemented using a dedicated hardware-based system for performing the specified functions or operations, or may be implemented using a combination of dedicated hardware and computer instructions.

[0048] Embodiment 1

[0049] As Figure 2 shown, this embodiment provides a method for monitoring the blockage of a fluid pipeline system. This embodiment takes the application of this method to a server as an example. It can be understood that this method can also be applied to a terminal, and can also be applied to a system including a terminal and a server, and is realized through the interaction between the terminal and the server. The server can be an independent physical server, or a server cluster or distributed system composed of multiple physical servers, or a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, web servers, cloud communications, middleware services, domain name services, security services CDN, and big data and artificial intelligence platforms. The terminal can be a smart phone, a tablet computer, a laptop computer, a desktop computer, a smart speaker, a smart watch, etc., but is not limited thereto. The terminal and the server can be directly or indirectly connected through wired or wireless communication methods, and this application does not make any restrictions here. In this embodiment, the method includes the following steps:

[0050] A theoretical fluid flow calculation unit, configured to obtain a theoretical fluid flow using a blockage monitoring mathematical model based on the acquired current pipeline pressure and regulating valve opening.

[0051] An alarm threshold calculation unit, configured to set an alarm threshold according to the theoretical fluid flow.

[0052] An early warning unit, configured to give an early warning if the acquired instantaneous fluid flow is less than the alarm threshold.

[0053] The present invention constructs a blockage monitoring mathematical model. According to the current pipeline pressure and the opening degree of the regulating valve, the theoretical fluid flow rate is calculated, and a flowmeter is used to collect the instantaneous fluid flow rate in real time. The instantaneous fluid flow rate is compared with the alarm threshold. If the instantaneous fluid flow rate is less than the alarm threshold, a warning is given; otherwise, no warning is given. By using the method of mathematical modeling to write the corresponding control program, the present invention can monitor the operation of the fluid pipeline system in real time and send out warning information in time according to the set threshold, reminding relevant personnel to check and handle, so as to avoid the situation that serious blockage or complete blockage affects normal production.

[0054] In some embodiments, the control system of the present invention collects the pipeline pressure, fluid flow rate and opening degree signal of the regulating valve of the pipeline system. Instead of focusing on a single influencing factor for the factors affecting pipeline blockage, it only focuses on whether there is a problem with the entire fluid pipeline system. Therefore, the present invention considers the fluid pipeline system as a whole. When there is a problem with the entire fluid pipeline system, individual influencing factors are considered when looking for specific problems.

[0055] In one or more embodiments, the present invention takes the pipeline pressure and the valve opening degree as independent variables, and the theoretical fluid flow rate as the dependent variable. These are the three variables of the mathematical model for calculating the theoretical fluid flow rate. When the pipeline system is just put into use or just completed maintenance, the pipeline system is in the best operating state. At this time, a set of data of the instantaneous fluid flow rate under different numerical combinations of the pipeline pressure and the opening degree of the regulating valve is measured and recorded, and the set value of each independent variable is not less than 5. In this way, 25 groups of data will be obtained. A mathematical model is established from these data.

[0056] The present invention outputs a pipeline system blockage warning signal through a control program. According to the mathematical model, a corresponding control program for the relationship between pipeline pressure, regulating valve opening degree and fluid flow rate is written. The theoretical fluid flow rate at the current pipeline pressure and regulating valve opening degree is calculated by the control program; the threshold is calculated by multiplying the theoretical fluid flow rate by the set threshold coefficient; the threshold is compared with the instantaneous flow rate, and a pipeline system blockage warning signal is output.

[0057] Specifically, the pipeline system blockage warning signal is output in two ways: one way drives an audible and visual alarm to remind relevant personnel to check and handle; the other way configures an alarm variable on the operation interface for display and outputs specific alarm content.

[0058] In some embodiments, variables can also be configured on the operation interface to display the current pipeline pressure, regulating valve opening degree, theoretical fluid flow rate, threshold coefficient, set threshold and instantaneous fluid flow rate, etc. These display information can help maintenance personnel carry out maintenance work.

[0059] The present invention has the function of real-time monitoring of the clogging trend of the pipeline system. The instantaneous flow rate and the theoretical fluid flow rate output during the production process can be used for real-time comparison. The closer the instantaneous flow rate is to the theoretical fluid flow rate, the better the state of the pipeline system; conversely, the greater the difference between the instantaneous flow rate and the theoretical fluid flow rate, the more serious the clogging degree of the pipeline system.

[0060] The analytical steps of the clogging monitoring mathematical model and the warning program operation steps for the fluid pipeline system in the present invention are as follows:

[0061] The mathematical model establishing the relationship between the fluid pipeline pressure, the opening degree of the regulating valve and the fluid flow rate is:

[0062] Z = aX 3 + bX 2Y + cXY 2 + dY 3 + eX 2 + fXY + gY 2 + hX + iY + j

[0063] Wherein, Z is the fluid flow rate; X is the pipeline pressure; Y is the opening degree of the regulating valve; a, b, c, d, e, f, g, h, i and j are variable coefficients. For a definite pipeline system, these variable coefficients are all constant values; for different pipeline systems, the variable coefficients have their corresponding constant values. The method for obtaining the variable coefficients is as follows: Obtain a set of data of the corresponding fluid flow rate output at different opening degrees of the regulating valve and different pipeline pressures through experiments, and obtain the regression equation. For example, as shown in Table 1:

[0064] Table 1 Corresponding relationship table between the opening degree of the SIROX thin film valve and the steam flow rate

[0065]

[0066] According to the above data, the calculated regression equation is:

[0067] Z = -0.004X 3 + 0.15X 2 Y - 0.02XY 2 + 0.0001Y 3 + 0X 2 + 0XY + 0Y 2 - 18.7X + 0.85Y + 280.5.

[0068] When the pipeline pressure X and the opening degree of the regulating valve Y are relatively stable values during normal production, the calculated value of the fluid flow rate Z can be obtained according to the mathematical model at this time, and this Z value is the theoretical fluid flow rate, denoted as Z 理论 .

[0069] The detected value of the fluid flowmeter in the pipeline system is denoted as Z 实际; The threshold coefficient TH is generally set to TH = 0.8 according to experience.

[0070] When Z 实际 ≥ Z 理论 × TH, it indicates that the fluid pipeline system is unblocked or has a small degree of blockage, and the pipeline system can operate normally. At this time, the program outputs a pipeline system blockage warning signal = 0.

[0071] When Z 实际 < Z 理论 × TH, it indicates that the degree of blockage of the fluid pipeline system has exceeded the allowable range, and the pipeline system urgently needs inspection and maintenance. At this time, the program outputs a pipeline system blockage warning signal = 1, the warning light flashes, the siren sounds, and the alarm screen displays relevant text information.

[0072] Embodiment 2

[0073] This embodiment provides a device for monitoring the blockage of a fluid pipeline system.

[0074] As Figure 3 shown, a device for monitoring the blockage of a fluid pipeline system includes:

[0075] A theoretical fluid flow calculation unit for obtaining the theoretical fluid flow based on the acquired current pipeline pressure and regulating valve opening using a blockage monitoring mathematical model;

[0076] An alarm threshold calculation unit for setting an alarm threshold according to the theoretical fluid flow;

[0077] An early warning unit for giving an early warning if the acquired instantaneous fluid flow is less than the alarm threshold;

[0078] Among them, the blockage monitoring mathematical model is:

[0079] Z = aX 3 + bX 2Y + cXY 2 + dY 3 + eX 2 + fXY + gY 2 + hX + iY + j

[0080] Among them, Z is the theoretical fluid flow; X is the current pipeline pressure; Y is the regulating valve opening; a, b, c, d, e, f, g, h, i, and j are variable coefficients, all of which are constant values.

[0081] In some embodiments, setting the alarm threshold according to the theoretical fluid flow includes: the alarm threshold is the product of the theoretical fluid flow and the threshold coefficient.

[0082] In some embodiments, the early warning includes: alarming by driving an audible and visual alarm, and displaying alarm information on an operation interface.

[0083] In some embodiments, the operation interface is used to display the current pipeline pressure, the opening degree of the regulating valve, the theoretical fluid flow rate, the threshold coefficient, the set threshold, and the instantaneous fluid flow rate.

[0084] Embodiment III

[0085] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps in the method for monitoring the blockage of a fluid pipeline system as described in Embodiment I above are implemented.

[0086] Embodiment IV

[0087] This embodiment provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, the steps in the method for monitoring the blockage of a fluid pipeline system as described in Embodiment I above are implemented.

[0088] Embodiment V

[0089] This embodiment provides a computer program product or a computer program. The computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the steps in the method for monitoring the blockage of a fluid pipeline system as described in Embodiment I above.

[0090] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories and optical memories, etc.) containing computer-usable program code.

[0091] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and the combination of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of general-purpose computers, special-purpose computers, embedded processors, or other programmable data processing devices to generate a machine, so that the instructions executed by the processors of the computer or other programmable data processing devices generate for implementation in the processFigure 1 one or more processes and / or blocks Figure 1 means for the functions specified in one or more blocks

[0092] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including an instruction means that implements the functions in the process Figure 1 one or more processes and / or blocks Figure 1 specified in one or more blocks

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are performed on the computer or other programmable device to produce a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in the process Figure 1 one or more processes and / or blocks Figure 1 specified in one or more blocks

[0094] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, the storage medium can be a magnetic disk, an optical disc, a read-only memory (ROM), or a random access memory (RAM), etc.

[0095] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for monitoring the blockage of a fluid pipeline system, characterized in that, Including: Based on the acquired current pipeline pressure and regulating valve opening, using the blockage monitoring mathematical model to obtain the theoretical fluid flow rate; Setting an alarm threshold according to the theoretical fluid flow rate; If the acquired instantaneous fluid flow rate is less than the alarm threshold, then give a warning; Wherein, the blockage monitoring mathematical model is: Z = aX 3 + bX 2Y + cXY 2 + dY 3 + eX 2 + fXY + gY 2 + hX + iY + j Wherein, Z is the theoretical fluid flow rate; X is the current pipeline pressure; Y is the regulating valve opening; a, b, c, d, e, f, g, h, i, and j are variable coefficients, all of which are constant values.

2. The method for monitoring the blockage of a fluid pipeline system according to claim 1, characterized in that, The setting of the alarm threshold according to the theoretical fluid flow rate includes: The alarm threshold is the product of the theoretical fluid flow rate and the threshold coefficient.

3. The method for monitoring the blockage of a fluid pipeline system according to claim 1, wherein The warning includes: Giving an alarm by driving an audible and visual alarm, and displaying alarm information on the operation interface.

4. The method for monitoring clogging of a fluid pipeline system according to claim 3, wherein, The operation interface is used to display the current pipeline pressure, regulating valve opening, theoretical fluid flow rate, threshold coefficient, set threshold, and instantaneous fluid flow rate.

5. A device for monitoring the blockage of a fluid pipeline system, characterized in that, Including: A theoretical fluid flow rate calculation unit, configured to use the blockage monitoring mathematical model to obtain the theoretical fluid flow rate based on the acquired current pipeline pressure and regulating valve opening; An alarm threshold calculation unit, configured to set an alarm threshold according to the theoretical fluid flow rate; A warning unit, configured to give a warning if the acquired instantaneous fluid flow rate is less than the alarm threshold; Wherein, the blockage monitoring mathematical model is: Z = aX 3 + bX 2Y + cXY 2 + dY 3 + eX 2 + fXY + gY 2 + hX + iY + j Wherein, Z is the theoretical fluid flow rate; X is the current pipeline pressure; Y is the regulating valve opening; a, b, c, d, e, f, g, h, i, and j are variable coefficients, all of which are constant values.

6. The device for monitoring the blockage of a fluid pipeline system according to claim 5, characterized in that, The setting of the alarm threshold according to the theoretical fluid flow rate includes: The alarm threshold is the product of the theoretical fluid flow rate and the threshold coefficient.

7. The device for monitoring the blockage of a fluid pipeline system according to claim 5, characterized in that, The warning includes: Giving an alarm by driving an audible and visual alarm, and displaying alarm information on the operation interface; Or, The operation interface is used to display the current pipeline pressure, regulating valve opening, theoretical fluid flow rate, threshold coefficient, set threshold, and instantaneous fluid flow rate.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps in the method for monitoring the blockage of a fluid pipeline system as described in any one of claims 1-4.

9. A computer device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps in the method for monitoring the blockage of a fluid pipeline system as described in any one of claims 1-4.

10. A computer program product, characterized in that, The computer program product includes a computer program, and when the computer program is executed by a processor, it implements the steps in the method for monitoring the blockage of a fluid pipeline system as described in any one of claims 1-4.

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