Refrigerant leakage detection method of online pipe system, medium and computer equipment

Abstract

The invention relates to the technical field of pipeline leakage detection, and particularly provides a refrigerant leakage detection method of an online pipe system, a computer readable storage medium and computer equipment, the online pipe system comprises a plurality of online units, and a pipeline of each online unit is provided with an optical fiber module. The refrigerant leakage detection method comprises the steps that first flow data corresponding to the multiple online units are obtained; at least according to the first flow data, determining a current online unit with leakage in the plurality of online units; applying vibration to the pipeline corresponding to the current online unit where leakage occurs, and thus obtaining a detection curve based on the optical fiber module corresponding to the pipeline of the current online unit; and according to the detection curve, the position of a pipeline where leakage occurs in the current online unit is determined. With such a configuration, it is possible to quickly and accurately determine the location of a pipeline where a leak has occurred by combining flow detection with detection based on the optical fiber module.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline leakage detection, and specifically provides a refrigerant leakage detection method for an online pipe system, a computer-readable storage medium, and a computer device. Background Art

[0002] Refrigerators, air conditioners, water heaters, etc. are independent cooling and heating household appliances (cooling and heating equipment). When each has its own independent cooling and heating system, there will be obvious problems such as cost waste (user configuration price), energy waste (such as the heat energy generated by the refrigerator compressor is dissipated to the indoor space through the refrigerator shell, and this part of the heat energy cannot be reused), resource waste (such as air conditioning is only needed for cooling in the hot summer, and it is idle most of the time), and noise pollution (the noise problem caused by the main sound source of household appliances (such as compressors, fans, etc.) to the indoor space has always been one of the pain points of household appliances. In view of this, the whole-house intelligent thermal management system came into being, with households, buildings, communities, and regions as layer-by-layer units, and a set of thermal management systems for hierarchical units of different sizes have emerged according to actual needs.

[0003] For example, in a thermal management system, the compressor and each household, as well as multiple cooling and heating equipment corresponding to each household, are connected through online pipes. In daily use, online pipes are often damaged due to aging of materials, improper use by users, corrosion, etc., which may cause refrigerant leakage. If the damage of online pipes is not dealt with for a long time, it will affect the performance of the entire thermal management system and may even cause damage to the cooling and heating equipment inside the system. Therefore, it is particularly necessary to find leakage problems in a timely manner. Summary of the invention

[0004] The present invention aims to at least partially solve the above technical problems, specifically, how to timely detect the refrigerant leakage problem in multiple units of a common thermal management system.

[0005] In a first aspect, the present invention provides a refrigerant leakage detection method for an online pipe system, wherein the online pipe system comprises a plurality of online units, and the pipelines corresponding to the online units are configured with optical fiber modules, and the refrigerant leakage detection method comprises: obtaining first flow data corresponding to the plurality of online units; determining whether leakage occurs in the plurality of online units at least based on the first flow data; if so, applying vibration to the pipeline corresponding to the current online unit where the leakage occurs, and thereby obtaining a detection curve based on the optical fiber module corresponding to the pipeline of the current online unit; and determining the pipeline position where the leakage occurs in the current online unit based on the detection curve.

[0006] With such a configuration, it is possible to quickly and accurately identify the location of a pipeline where a leak has occurred by combining flow rate detection with detection using optical fibers.

[0007] It can be understood that the pipeline corresponding to each online unit may include the internal pipeline thereof, and a part of the connecting pipeline associated with the online unit (and the pipeline between the online unit and the compressor) may also be included in the pipeline corresponding to each online unit.

[0008] For the above-mentioned refrigerant leakage detection method of the online pipe system, in a possible implementation, the online pipe system includes a compressor, and the compressor is connected to the refrigerant inlet and the refrigerant outlet of each of the online units to form a loop, and the first flow data includes flow data of the refrigerant inlet and the refrigerant outlet.

[0009] Through such a configuration, a possible form of the first flow data is given. For example, it can be the difference, ratio, or value calculated in other ways between the flow data of the refrigerant inlet and the refrigerant outlet. Taking the difference as an example, if the flow data of the refrigerant outlet is less than the flow data of the refrigerant inlet (exceeding the error value or the normal loss range), it means that the online unit is leaking.

[0010] For the above-mentioned refrigerant leakage detection method of the online pipe system, in a possible implementation, the refrigerant leakage detection method includes: obtaining second flow data, the second flow data includes flow data of the exhaust port and the return port of the compressor; accordingly, the "determining the current online unit where the leakage occurs among the multiple online units at least based on the first flow data" includes: determining the current online unit where the leakage occurs among the multiple online units based on the first flow data and the second flow data.

[0011] With such a configuration, it is possible to more reliably identify the currently online unit.

[0012] Similar to the aforementioned first flow data, the second flow data may be a difference or ratio of flow data between the exhaust port and the return port, or a value calculated in other ways.

[0013] In addition, those skilled in the art can determine how to determine the current online unit based on the two flow data according to actual conditions, such as: after determining based on the first flow data, using the second flow data for supplementary evidence; when the second flow data is abnormal, obtaining the first flow data; etc.

[0014] For the refrigerant leakage detection method of the above-mentioned online pipe system, in one possible implementation, the optical fiber module includes a pulsed laser and an optical fiber arranged in the pipeline, and the "applying vibration to the pipeline corresponding to the current online unit where the leakage occurs, and thereby obtaining a detection curve based on the optical fiber module of the pipeline corresponding to the current online unit" includes: applying vibration to the pipeline to cause the optical fiber arranged in the pipeline to deform; causing the pulsed laser to emit laser to obtain a detection curve of the intensity change of the Rayleigh scattered light transmitted to the optical fiber.

[0015] Through such a composition, a possible form of the detection curve is given. If the detection curve is the measurement curve of the optical time domain reflectometer, the vibration position can be determined by comparing it with the OTDR curve, and the place where the actual light intensity curve suddenly changes can be obtained, and then the location where the pipeline is damaged can be inferred. For the above-mentioned refrigerant leakage detection method for the online pipe system, in one possible implementation, the optical fiber module includes a pulsed laser and an optical fiber arranged in the pipeline, and the "determining whether a leakage occurs in the multiple online units at least based on the first flow data" includes: if not, applying vibration to the pipeline of the online pipe system that does not belong to the online unit, so that the optical fiber arranged on the pipeline is deformed; the pulsed laser is made to emit laser to obtain a detection curve of the intensity change of the Rayleigh scattered light transmitted to the optical fiber; based on the detection curve, the position of the pipeline where the leakage occurs in the online pipe system is determined.

[0016] With such a configuration, it is possible to identify the leakage position of the pipeline by performing vibration detection on a small number of pipelines.

[0017] Regarding the refrigerant leakage detection method for the online pipe system, in a possible implementation manner, at least a portion of the multiple online units are arranged in parallel.

[0018] Through such a configuration, a possible way is provided for the online units to form an online pipe system.

[0019] It is understandable that the levels between the online units can be the same or different, such as a single household can be an online unit, or a single floor or several households in a single floor can be an online unit.

[0020] For the refrigerant leakage detection method of the above-mentioned online pipe system, in a possible implementation manner, the online unit is a refrigeration and heating equipment unit corresponding to a household, and accordingly, the online pipe system is a system including multiple households; or the online unit is any refrigeration and heating equipment belonging to the same household, and accordingly, the online pipe system is a system corresponding to the household including the refrigeration and heating equipment.

[0021] Through such a structure, a possible form of online pipe system is given.

[0022] For the refrigerant leakage detection method of the above-mentioned online pipe system, in a possible implementation, in the step of "determining whether leakage occurs in the multiple online units at least based on the first flow data", if so, sending the identity information corresponding to the current online unit; and / or closing the valve that enables the online unit to be connected to the compressor.

[0023] With such a configuration, it is possible to seek to reduce the impact on the performance of the online pipe system due to refrigerant leakage as much as possible by timely blocking the connection between the current online unit and the online pipe system. By timely notification, the refrigerant leakage problem is expected to be solved as soon as possible.

[0024] In addition, in the case where the leakage location does not belong to an online unit, specific information such as specific leakage location information, non-online unit leakage, etc. can also be sent according to actual needs.

[0025] In a second aspect, the present invention provides a computer-readable storage medium, which includes a memory, wherein the memory is suitable for storing multiple program codes, and the program codes are suitable for being loaded and run by a processor to execute any of the above-mentioned refrigerant leakage detection methods for an online pipe system.

[0026] It can be understood that the computer-readable storage medium has all the technical effects of the refrigerant leakage detection method for an online pipe system described in any of the above items, which will not be repeated here.

[0027] It is understood by those skilled in the art that the present invention implements all or part of the processes in the refrigerant leakage detection method of the online pipe system, which can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned various method embodiments can be implemented. Among them, the computer program includes a computer program code, and it can be understood that the program code includes but is not limited to the program code for executing the above-mentioned refrigerant leakage detection method of the online pipe system. For the convenience of explanation, only the part related to the present invention is shown. The computer program code can be in the form of source code, object code, executable file or some intermediate form. The computer-readable storage medium may include: any entity or device, medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electric carrier signal, telecommunication signal and software distribution medium that can carry the computer program code. It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased 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 storage medium does not include electric carrier signals and telecommunication signals.

[0028] In a third aspect, the present invention provides a computer device comprising a memory and a processor, wherein the memory is suitable for storing a plurality of program codes, and the program codes are suitable for being loaded and run by the processor to execute any of the aforementioned methods for detecting refrigerant leakage in an online pipe system.

[0029] It is understandable that the device has all the technical effects of the refrigerant leakage detection method for an online pipe system described in any of the above, which will not be described in detail here. The device can be a computer-controlled device formed by various electronic devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following takes an online management system (online units correspond to households) of a building as an example and describes a preferred embodiment of the present invention with reference to the accompanying drawings, in which:

[0031] Figure 1 A schematic diagram showing the structure of an online pipe system according to an embodiment of the present invention;

[0032] Figure 2 A schematic diagram showing the arrangement of optical fiber modules in an online tube system according to an embodiment of the present invention;

[0033] Figure 3 A schematic diagram showing the structure of an optical fiber module in an online tube system according to an embodiment of the present invention;

[0034] Figure 4A schematic diagram showing an OTDR curve related to an optical fiber module in an online pipe system according to an embodiment of the present invention;

[0035] Figure 5 A schematic diagram showing a flow chart of a refrigerant leakage detection method for an online pipe system according to an embodiment of the present invention; and

[0036] Figure 6 A schematic diagram showing a flow chart of determining a leakage position of a pipeline in a refrigerant leakage detection method for an online pipe system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the present embodiment is introduced in combination with a specific combination of operating steps, it is obvious that those skilled in the art can adjust the steps such as adding, reducing, replacing, etc. according to actual needs. If the online unit is any refrigeration and heating equipment belonging to the same household, the online pipe system is a system corresponding to the household including multiple refrigeration and heating equipment.

[0038] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, in order to better illustrate the present invention, many specific details are given in the following specific embodiments, and those skilled in the art should understand that the present invention can also be implemented without certain specific details. In some examples, the principle of vibration detection well known to those skilled in the art is not described in detail in order to highlight the main purpose of the present invention.

[0040] Main reference Figure 1 , Figure 1 FIG. 2 is a schematic diagram showing the structure of an online pipe system according to an embodiment of the present invention. Figure 1As shown, in a possible implementation, the online pipe system based on a building mainly includes a compressor, a liquid storage tank, a main evaporator, a cold storage tank, and multiple online units corresponding to multiple users (the number of users in this example is n) connected by pipelines. Among them, Q1 and Q2 respectively represent the amount of refrigerant flowing through the return air port and the exhaust port of the compressor. Qk1 and qk2 respectively represent the amount of refrigerant flowing through the refrigerant inlet and the refrigerant inlet and outlet of the online unit corresponding to user k (k = 1, 2, ..., n). Each online unit may include one or more refrigeration and heating equipment (such as a refrigerator, air conditioner, water heater, heater, wine cabinet, etc.), taking one refrigeration and heating equipment as an example, the basic components in the refrigeration and heating equipment usually include a heat storage tank and a condenser.

[0041] Main reference Figure 2 and Figure 3 , Figure 2 A schematic diagram showing the arrangement of optical fiber modules in an online tube system according to an embodiment of the present invention is shown. Figure 3 The schematic diagram of the structure of the optical fiber module in the online tube system of one embodiment of the present invention is shown. Figure 2 and Figure 3 As shown, in a possible implementation, corresponding to the aforementioned online pipe system, the pipelines of the online pipe system are divided into multiple pipelines (the number of pipelines in this example is m), and each pipeline unit corresponds to an optical fiber module. For example, among the m pipelines, part of them belong to the internal pipelines of the online unit, and part of the pipelines belong to the external pipelines of the online unit (such as the pipeline between the compressor and the online unit, the pipeline between the online unit-cold storage device-main evaporator-liquid storage device-compressor, etc.). The optical fiber module mainly includes an optical fiber arranged on the pipeline, a coupler, a pulsed laser that emits laser, a photoelectric detector that can capture Rayleigh scattered light, etc.

[0042] The principle of vibration detection based on the optical fiber module is: according to the principle of Rayleigh scattering light (when the particle size is much smaller than the wavelength of the incident light (less than one tenth of the wavelength), the intensity of the scattered light in each direction is different, and the intensity is inversely proportional to the fourth power of the wavelength of the incident light. This phenomenon is called Rayleigh scattering). Rayleigh scattering is not sensitive to temperature but only sensitive to stress. In this way, when the vibration acts on the optical fiber and propagates, the optical fiber will produce a certain deformation, thereby causing the intensity of the backward Rayleigh scattered light to change. Specifically, Rayleigh scattering is mainly caused by the microscopic inhomogeneity of the optical fiber. The refractive index of each part of the optical fiber is different, so that the light interacts with the material in the optical fiber and scatters in multiple directions. In this way, the corresponding relationship between the intensity of the vibration and the position information can be obtained by detecting the intensity of the backward Rayleigh scattered light. Specifically, when the optical fiber module is started, the processing unit of the optical fiber module corresponding to the effect pipeline feeds back the light intensity curve of the scattered light to the processing center, and the processing center compares the obtained detection curve with the OTDR (optical time-domain reflectometer) curve (reference Figure 4 ) to compare, we can get the actual light intensity curve where the sudden change occurs, and thus infer the location where the pipeline is damaged.

[0043] Main reference Figure 5 , Figure 5 A schematic diagram showing a flow chart of a refrigerant leakage detection method for an online pipe system according to an embodiment of the present invention. Figure 5 As shown, in a possible implementation, a refrigerant leakage detection method for an online pipe system includes:

[0044] S501. When the online pipe system is running (the compressor is running), obtain second flow data corresponding to the compressor, such as the second flow data including the refrigerant quantity Q1 at the return port and the refrigerant quantity Q2 at the exhaust port of the compressor.

[0045] S503, as in this example, according to the difference between Q1 and Q2, determine whether the online pipe system has a leak. Specifically, determine whether Q1 is less than Q2 (or more precisely, whether Q1 is less than Q2 and the difference reaches a certain set value). If so, proceed to S505; if not, continue to maintain the current online pipe system operation state.

[0046] S505: First, confirm whether leakage occurs inside the n online units corresponding to user 1 to user n. In this example, the method of confirming whether leakage occurs inside the n online units corresponding to user 1 to user n is:

[0047] Obtain n groups of first flow data corresponding to users 1 to n respectively. Taking user 1 as an example, its first flow data includes the refrigerant quantity q11 at the refrigerant inlet and the refrigerant quantity q12 at the refrigerant outlet. Similar to the aforementioned Q1 and Q2, when q12 is less than q11 and the difference reaches a certain set value, it can be determined that the online unit corresponding to the user (the current online unit) has a refrigerant leak. If yes, proceed to S507, if not, proceed to S511.

[0048] S507: Make the pulse laser apply vibration to the pipeline of the current online unit, and thereby determine the specific location where the leakage occurs in the current online unit.

[0049] S509: Feedback information of leakage of the current online unit and the specific leakage location may be sent to the user or the central control center corresponding to the online management system. If the current online unit includes multiple units, feedback information needs to be sent separately.

[0050] In addition, the valve corresponding to the current online unit should be closed to prevent the problem of continuous leakage of refrigerant before maintenance and troubleshooting. In a possible implementation, users 1 to n can be distinguished based on factors such as priority and importance. Taking priority as an example, in the case where a refrigerant leak occurs in the online unit corresponding to a user with a lower priority, only the valve corresponding to the current online unit is closed. In the case where a refrigerant leak occurs in the online unit corresponding to a user with a higher priority, in addition to closing the valve corresponding to the current online unit, the valves of other online units associated with it should also be closed, or even the valves of all online units should be closed until the leakage problem is resolved. The specific closing range can be flexibly set according to actual needs.

[0051] S511. Make the pulse laser apply vibration to the pipelines in the online pipe system that do not belong to the current online unit (such as the external pipelines of the online unit among the m pipelines (such as the pipelines between the compressor and the online unit, the pipelines between the online unit-cold storage device-main evaporator-liquid storage device-compressor, etc.)), and thereby determine the specific location of the leakage in the current online unit.

[0052] Similar to S509, the leakage fact corresponding to the external pipeline and the specific leakage location etc. may also be sent as feedback information to the central control center corresponding to the online pipe system.

[0053] Main reference Figure 6 , Figure 6 A schematic diagram showing a flow chart of determining the leakage position of a pipeline in a refrigerant leakage detection method for an online pipe system according to an embodiment of the present invention. Figure 6As shown, in a possible implementation manner, the specific steps (or principles) of the aforementioned S507 (causing the pulse laser to apply vibration to the pipeline of the current online unit, thereby determining the specific location where the leakage occurs in the current online unit) and S511 (causing the pulse laser to apply vibration to the pipeline that does not belong to the current online unit in the online pipe system, thereby determining the specific location where the leakage occurs in the current online unit) include:

[0054] S601: Apply vibration to a current online unit in the online pipe system or a pipe (external pipe) that does not belong to the current online unit. When the vibration acts on the optical fiber and propagates, the optical fiber will produce a certain deformation.

[0055] S603, and enable the pulse laser to emit laser to the optical fiber.

[0056] S605: Obtain a light intensity curve corresponding to the segment separated in the current online unit or external pipeline as a detection curve.

[0057] The principle of Rayleigh scattered light is: since Rayleigh scattering is not sensitive to temperature but only to stress, the vibration acting on the optical fiber will cause the intensity of the laser (backward Rayleigh scattered light) propagating on the optical fiber to change. In this way, by detecting the intensity of the back Rayleigh scattered light (as the light intensity curve of the detection curve), the intensity and position information of the vibration can be obtained.

[0058] S607: Compare the light intensity curve with the OTDR curve to determine the specific location where the leakage occurs in the current online unit or the segment separated in the external pipeline.

[0059] It can be seen that, based on the refrigerant leakage detection method of the online pipe system of the present invention, after the user is determined by flow detection, the specific location of the pipeline leakage is quickly detected by using the distributed optical fiber vibration detection method, so that the current online unit can be locked in time and the specific leakage location of the pipeline can be determined. In this way, the leakage information can be promptly notified to the relevant maintenance personnel through feedback methods such as timely alarms and voice information. Based on this, it is expected that the performance of the online pipe system can be guaranteed by timely eliminating the leakage fault.

[0060] It should be pointed out that although the various steps in the above embodiments are described in a specific order, those skilled in the art can understand that in order to achieve the effects of the present invention, different steps do not have to be performed in such an order. They can be performed simultaneously or in other orders, and some steps can also be added, replaced or omitted.

[0061] It should be noted that although the refrigerant leakage detection method of the online pipe system constructed in the above specific manner is introduced as an example, those skilled in the art will understand that the present invention should not be limited thereto. In fact, the user can flexibly adjust the relevant steps and parameters in the steps according to the actual application scenarios and other situations.

[0062] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A refrigerant leakage detection method for an online pipe system, characterized in that: The online pipe system includes a plurality of online units, and the pipelines corresponding to the online units are configured with optical fiber modules. The refrigerant leakage detection method includes: Acquire first flow data corresponding to the plurality of online units; determining whether leakage occurs in the plurality of online units at least based on the first flow data; If so, applying vibration to the pipeline corresponding to the current online unit where the leakage occurs, and thereby obtaining a detection curve based on the optical fiber module of the pipeline corresponding to the current online unit; According to the detection curve, the position of the pipeline where the leakage occurs in the current online unit is determined.

2. The refrigerant leakage detection method according to claim 1, characterized in that: The online pipe system includes a compressor, and the compressor is connected to the refrigerant inlet and the refrigerant outlet of each of the online units to form a loop. The first flow data includes flow data of the refrigerant inlet and the refrigerant outlet.

3. The refrigerant leakage detection method according to claim 2, characterized in that: The refrigerant leakage detection method comprises: Acquire second flow data, where the second flow data includes flow data of an exhaust port and a return port of the compressor; Accordingly, the step of “determining the current online unit in which leakage occurs among the multiple online units at least based on the first flow data” includes: A current online unit in which a leak occurs among the multiple online units is determined according to the first flow data and the second flow data.

4. The refrigerant leakage detection method according to claim 1, characterized in that: The optical fiber module includes a pulsed laser and an optical fiber arranged in the pipeline, and the "applying vibration to the pipeline corresponding to the current online unit where leakage occurs, and thereby obtaining a detection curve based on the optical fiber module of the pipeline corresponding to the current online unit" includes: Applying vibration to the pipeline so that the optical fiber arranged on the pipeline is deformed; The pulse laser is made to emit laser light to obtain a detection curve of intensity change of Rayleigh scattered light transmitted through the optical fiber.

5. The refrigerant leakage detection method according to claim 1, characterized in that: The optical fiber module includes a pulse laser and an optical fiber arranged in the pipeline. The “determining whether leakage occurs in the plurality of online units at least based on the first flow data” includes: determining whether leakage occurs in the plurality of online units at least based on the first flow data; If not, applying vibration to the pipeline of the online pipe system that does not belong to the online unit, so that the optical fiber arranged on the pipeline is deformed; The pulse laser emits laser light to obtain a detection curve of intensity change of Rayleigh scattered light transmitted to the optical fiber; Based on the detection curve, the position of the pipeline where leakage occurs in the online pipe system is determined.

6. The refrigerant leakage detection method according to claim 1, characterized in that: At least a portion of the plurality of online units are arranged in parallel.

7. The refrigerant leakage detection method according to claim 1, characterized in that: The online unit is a cooling and heating equipment unit corresponding to a household, and accordingly, the online pipe system is a system including multiple households; or The online unit is any cooling and heating equipment belonging to the same household. Accordingly, the online pipe system is a system including the cooling and heating equipment and corresponding to the household.

8. The refrigerant leakage detection method according to claim 2, characterized in that: In the step of "determining whether leakage occurs for the plurality of online units at least based on the first flow data", if so, sending the identity information corresponding to the current online unit; and / or The valve enabling communication between the online unit and the compressor is closed.

9. A computer-readable storage medium, the storage medium comprising a memory, the memory being suitable for storing a plurality of program codes, characterized in that: The program code is suitable for being loaded and run by a processor to execute the leakage detection method for an online pipe system according to any one of claims 1 to 8.

10. A computer device, comprising a memory and a processor, wherein the memory is suitable for storing a plurality of program codes, wherein: The program code is suitable for being loaded and run by the processor to execute the leakage detection method for an online pipe system according to any one of claims 1 to 8.

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