Pipeline fault identification method, device and system

Abstract

The invention discloses a pipeline fault recognition method, device and system. The pipeline fault recognition method comprises the steps that the current flow speed of a liquid inlet pipeline is obtained, and a liquid bag weight array is collected and obtained within each preset interval duration; performing difference analysis on the liquid bag weight array to obtain an analysis result; according to the analysis result, pipeline fault recognition is conducted on the current flow speed and the liquid bag weight array, and a recognition result is obtained; whether pipeline faults occur in the liquid inlet pipeline or not is judged according to the recognition result, the pipeline fault recognition device comprises a module used for carrying out a pipeline fault recognition algorithm, and the system comprises a controller used for executing the pipeline fault recognition method. By using the pipeline fault identification method provided by the invention, whether a fault exists in the pipeline or not can be rapidly detected, and elimination measures are carried out aiming at the pipeline fault, so that the precision of a preparation can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of abnormality processing, and in particular to a pipeline fault identification method, device and system. Background Art

[0002] In the technical field of cell therapy, the requirements for the fluidity of liquids are relatively high. For example, in the pipelines of the process flow of cell preparations, bubble sensors are usually installed in the liquid pipelines to detect whether there are bubbles in the liquid, which is convenient for operators to identify and take timely remedial measures when faults are identified to avoid affecting the cell vitality and cell processing efficiency.

[0003] However, in actual operation, operators often misidentify or miss identification during the process, or even make operational errors, which may cause gas or bubbles to appear at high points in the pipeline. The gas or bubbles will cause the liquid flow to be restricted or even blocked. This situation is called gas lock. When the gas lock phenomenon occurs, the bubbles generated in the liquid are difficult or even unable to flow to the bubble sensor, resulting in the inability to detect the bubbles, ultimately causing inaccurate results. The existence of bubbles may not be discovered until after a long period of ineffective operation, affecting the accuracy of the preparation. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a pipeline fault identification method, device and system. By using the pipeline fault identification method provided by the present invention, it is possible to quickly detect whether there is a fault in the pipeline, and perform elimination measures for the pipeline fault, thereby ensuring the accuracy of the preparation.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A pipeline fault identification method, comprising:

[0007] Obtain the current flow rate of the liquid inlet pipeline, and collect the liquid bag weight array at each preset interval;

[0008] Performing difference analysis on the liquid bag weight array to obtain analysis results;

[0009] According to the analysis result, pipeline fault identification is performed on the current flow rate and the liquid bag weight array to obtain an identification result; and whether a pipeline fault occurs in the liquid inlet pipeline is determined by the identification result.

[0010] Furthermore, before obtaining the current flow rate, the method includes:

[0011] Control the preset running time of continuous liquid inflow in the liquid inlet pipeline;

[0012] The current flow rate is determined according to the flow rate of the preset running time.

[0013] Furthermore, a difference analysis is performed on the liquid bag weight array to obtain analysis results, including:

[0014] Calculate the difference between two equal intervals from the liquid bag weight array to obtain at least one interval difference;

[0015] A threshold value is determined for each of the interval differences to obtain the analysis result.

[0016] Further, the performing threshold judgment on each of the interval differences to obtain the analysis result includes:

[0017] comparing each of said interval differences to a reduction threshold;

[0018] When each of the interval differences is less than the reduction threshold, an analysis result of starting pipeline fault identification is obtained;

[0019] When any of the interval differences is greater than or equal to the reduction threshold, a result of continued analysis is obtained.

[0020] Further, according to the analysis result, pipeline fault identification is performed on the current flow rate and the fluid bag weight array to obtain an identification result, including:

[0021] When the analysis result is to start pipeline fault identification, summing the differences between the array elements in the liquid bag weight array to obtain a difference sum;

[0022] The recognition result is determined according to the current flow rate and the sum of the differences.

[0023] Further, determining the recognition result according to the current flow rate and the difference includes:

[0024] Processing the current flow rate by a preset multiple to obtain a judgment threshold;

[0025] When the sum of the difference is less than the judgment threshold, identifying a pipeline fault recognition result;

[0026] When the sum of the differences is greater than or equal to the judgment threshold, a recognition result indicating no pipeline fault is identified.

[0027] Furthermore, according to the analysis result, pipeline fault identification is performed on the current flow rate and the liquid bag weight array, and after the identification result is obtained, it includes:

[0028] When the identification result is a pipeline fault, the current process is terminated, and the centrifugal speed of the centrifugal container connected to the liquid inlet pipeline is controlled to be adjusted from the initial speed to the exhaust speed according to the preset deceleration rate, and the preset low speed duration is maintained; the liquid inlet pipeline and the centrifugal container contain liquid;

[0029] The pump speed is controlled to a preset pump speed, so that the centrifugal container is drained and expanded; the pump drives the liquid in the drainage pipeline to be discharged to the waste liquid container; the drainage pipeline is connected to the centrifugal container;

[0030] After the liquid discharge and volume expansion process, the centrifugal speed of the centrifugal container is controlled to recover to the initial speed at a preset acceleration, so that the bubbles caused by pipeline failure in the liquid inlet pipeline are drained to the centrifugal container.

[0031] Furthermore, the control pump speed is set to a preset pump speed to allow the centrifugal container to discharge liquid and expand capacity, including:

[0032] The control valve in the liquid inlet pipeline close to the centrifugal container is closed, and the pump is controlled to run at the preset pump speed for the preset expansion time to complete the liquid discharge and expansion process.

[0033] The present invention also provides a pipeline fault identification device, comprising:

[0034] An acquisition module is used to acquire the current flow rate of the liquid inlet pipeline and to collect and obtain the liquid bag weight array within each preset interval;

[0035] An analysis module, used for performing difference analysis on the liquid bag weight array to obtain analysis results;

[0036] The identification module is used to identify the pipeline fault on the current flow rate and the liquid bag weight array according to the analysis result to obtain an identification result; and judge whether the pipeline fault occurs in the liquid inlet pipeline through the identification result.

[0037] The present invention also provides a pipeline fault identification system, comprising a liquid inlet pipeline, a centrifugal container, a liquid discharge pipeline, a pump and a controller, wherein the controller is used to execute the pipeline fault identification method as described above.

[0038] The beneficial effects of the present invention are:

[0039] The present invention provides a pipeline fault identification method, device and system. The pipeline fault identification method is used to analyze whether a pipeline has a fault. The pipeline fault identification device includes a module for performing a pipeline fault identification algorithm. The system includes a controller for executing the pipeline fault identification method.

[0040] The present invention achieves the goal of obtaining the current flow rate of the liquid inlet pipeline and the liquid bag weight array collected within each preset interval; then performing difference analysis on the liquid bag weight array to obtain an analysis result; based on the analysis result, performing pipeline fault identification on the current flow rate and the liquid bag weight array, and automatically identifying whether a pipeline fault occurs in the liquid inlet pipeline. Therefore, it is achieved to automatically detect whether there is a fault in the pipeline without manual monitoring, and execute corresponding troubleshooting measures for the pipeline fault, which can avoid long-term stagnation, ensure the quality and precision of cells in the preparation process, and improve the accuracy and reliability of cell preparations. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0042] Figure 1 is a flow chart of the pipeline fault identification method of the present invention;

[0043] Figure 2 is a schematic diagram of a pipeline fault identification device in the present invention;

[0044] Figure 3 It is a schematic diagram of the pipeline fault identification system in the present invention. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0046] The present invention provides a pipeline fault identification method, which can identify whether there is a fault in the pipeline and eliminate the fault, thereby ensuring the normal operation of pipeline transportation. Figure 1 As shown, the following steps are included:

[0047] Step S10, obtaining the current flow rate of the liquid inlet pipeline, and collecting and obtaining the liquid bag weight array within each preset interval.

[0048] It can be understood that the liquid inlet pipeline is connected to the centrifugal container, and the centrifugal container is a container space in which the liquid is centrifugally rotated. The centrifugal container includes two inlets and outlets, one of which is connected to the liquid inlet pipeline. The liquid inlet pipeline is a pipeline for the liquid to flow from the sample bag into the centrifugal container. The pipeline path can pass through a peristaltic pump, and the liquid in the liquid inlet pipeline is transferred by the peristaltic pump to flow into the centrifugal container. The preset interval duration is the duration of interval collection with the preset interval duration as a cycle, and the time period range can be set according to the needs, such as 13S, 60S, etc. The liquid bag weight array is a collection of the weight change values ​​of the liquid bag collected by the weighing sensor within each preset interval duration. The weight value recorded according to the minimum timestamp that can be collected is used as an array element, and the weight value within the preset interval duration is accumulated and recorded, thereby forming a liquid bag weight array.

[0049] In this embodiment, before executing step S10, the current flow rate of the liquid inlet pipeline is obtained through the following steps:

[0050] S101, controlling the liquid inlet pipeline to continuously infuse liquid for a preset time. It can be understood that a sample liquid bag containing specific cells is connected to the liquid inlet pipeline, and a control valve in the liquid inlet pipeline is opened. The liquid in the sample liquid bag is allowed to flow through the liquid inlet pipeline by controlling a pump (such as a peristaltic pump). After a preset time, the liquid fills the entire liquid inlet pipeline. The preset time is the time it takes for the liquid inlet pipeline to be filled with liquid.

[0051] S102: Determine the current flow rate according to the flow rate of the preset time period.

[0052] It can be understood that by collecting the weight change of the sample liquid bag within the preset time period, the volume change of the sample liquid bag can be calculated according to the inherent density of the sample liquid bag, and the actual current flow rate is determined based on the volume change and the preset time period. The current flow rate is the flow rate in the current liquid inlet pipeline.

[0053] This embodiment realizes determining the current flow rate by controlling the preset time length of continuous liquid inflow into the liquid inlet pipeline and the flow rate according to the preset time length, thereby accurately obtaining the real current flow rate and improving the accuracy and reliability of subsequent pipeline fault identification.

[0054] Step S20, performing difference analysis on the liquid bag weight array to obtain an analysis result, wherein the difference analysis is a process of analyzing the difference between each two array elements in the array, and determining whether the change of the sample liquid bag meets the threshold change requirement at the current flow rate through the difference analysis. The analysis result reflects whether the array elements in the liquid bag weight array meet the change requirement of the sample liquid bag at the current flow rate.

[0055] In one embodiment, performing difference analysis on the fluid bag weight array to obtain analysis results includes:

[0056] S201. Calculate the difference between the two equally spaced time lengths from the liquid bag weight array to obtain at least one interval difference. In the present embodiment, the difference between the two equally spaced time lengths is obtained by subtracting the weight values ​​of two adjacent liquid bag weight arrays. In another specific embodiment, the difference between the two equally spaced time lengths is obtained by subtracting the weight values ​​of a number of interval liquid bag weight arrays, and the number of interval liquid bag weight arrays is set according to actual conditions. In addition, the number of interval differences is adjusted according to actual needs.

[0057] S202, performing threshold determination on each of the interval differences to obtain the analysis result. In this embodiment, step S202 includes:

[0058] S2021. When each of the interval differences is less than the reduction threshold, an analysis result of starting pipeline fault identification is obtained, and the analysis result of starting pipeline fault identification indicates that an air lock fault is suspected to have occurred and pipeline fault identification needs to be started.

[0059] S2022. When any of the interval differences is greater than or equal to the reduction threshold, obtaining the analysis result work to be continued, that is, not starting the analysis result of pipeline fault identification. The analysis result of not starting pipeline fault identification indicates that there is no gas lock fault and there is no need to start pipeline fault identification.

[0060] For the above steps, the present invention provides a specific embodiment. In this embodiment, the preset interval time is 15s. The sample liquid bag weight value measured every 200ms within the preset interval time is collected and added to the liquid bag weight array A[i]. A[0] represents the sample liquid bag weight value collected within the first 200ms within the preset interval time, A[1] represents the sample liquid bag weight value collected within the second 200ms within the preset interval time, and so on. A[i] represents the sample liquid bag weight value collected within the i+1th 200ms of the preset time. When all array elements within the preset time of 15s are collected, the difference between the two array elements is compared. It can be understood that in this embodiment, the two array elements here are two adjacent liquid bag weight array elements. When the difference changes are less than the flow change at the current flow rate, the analysis result of starting pipeline fault identification is obtained. The analysis result of starting pipeline fault identification indicates that it is suspected that a gas lock fault has occurred and it is necessary to start pipeline fault identification. When the difference changes are greater than or equal to the flow change at the current flow rate, the analysis result work is continued, that is, the analysis result of pipeline fault identification is not started. The analysis result of not starting pipeline fault identification indicates that there is no gas lock fault and there is no need to start pipeline fault identification.

[0061] Step S30: According to the analysis result, pipeline fault identification is performed on the current flow rate and the liquid bag weight array to obtain an identification result, and whether a pipeline fault occurs in the liquid inlet pipeline is determined by the identification result; in this embodiment, step S30 includes:

[0062] S301. When the analysis result is to start pipeline fault identification, sum the differences between the array elements in the liquid bag weight array to obtain a difference sum.

[0063] S302. Determine the identification result according to the current flow rate and the difference sum, wherein the identification result includes pipeline fault and no pipeline fault, which reflects the result of identifying whether the liquid inlet pipeline has an air lock fault.

[0064] In this embodiment, step S302 includes the following steps:

[0065] S3021. Process the current flow rate by a preset multiple to obtain a judgment threshold. The size of the preset multiple is set according to actual needs. For example, in this embodiment, the preset multiple is set to 2. Then in step S3021, after processing the current flow rate by a preset multiple, the judgment threshold obtained is twice the current flow rate. The difference and the judgment threshold are then compared. When the difference and the judgment threshold are less than the judgment threshold, the pipeline fault is identified.

[0066] S3022: When the sum of the differences is greater than or equal to the judgment threshold, identify a recognition result that there is no pipeline fault.

[0067] Step S303: When the identification result is a pipeline failure, the current process is terminated.

[0068] In this embodiment, step S303 specifically includes:

[0069] S3031, speed reduction processing: after receiving the troubleshooting instruction, the current process is terminated, and the centrifugal speed of the centrifugal container connected to the liquid inlet pipeline is controlled to be adjusted from the initial speed to the exhaust speed according to the preset deceleration rate, and the preset low speed duration is maintained; the liquid inlet pipeline and the centrifugal container contain liquid.

[0070] In the above step S3031, the troubleshooting instruction is an instruction triggered after the air lock fault is identified. The present invention provides a specific embodiment. In this embodiment, the preset deceleration is set to 10RPM / S, the discharge speed is set to 1000RPM, and the preset low speed duration is set to 1min. In actual applications, adaptive adjustments can be made according to actual conditions.

[0071] S3032, control the speed of the pump to a preset pump speed, so that the centrifugal container is drained and expanded; the pump drives the liquid in the drainage pipeline to be discharged to the waste liquid container; the drainage pipeline is connected to the centrifugal container, close the control valve in the inlet pipeline close to the centrifugal container, and control the pump to run at the preset pump speed for a preset expansion time to complete the drainage and expansion process, the control valve controls the opening and closing of the switch valve to allow the liquid in the inlet pipeline to flow into and stop flowing into the centrifugal container, after the liquid in the centrifugal container is discharged to the waste liquid container, the air space in the centrifugal container will expand, which is referred to as the drainage and expansion process, the pump is arranged on the drainage pipeline, and the liquid in the centrifugal container is discharged into the waste liquid bag through the rotation of the pump.

[0072] In the above step S3032, the present invention provides a specific embodiment. In this embodiment, the flow rate of the discharge liquid is set to 100 ml / min by presetting the pump speed, and the preset expansion time is set to 2 min. In actual applications, adaptive adjustments can be made according to actual conditions.

[0073] S3033. After the drainage and expansion process, a drainage and recovery instruction after the drainage and expansion process is received, and the centrifugal speed of the centrifugal container is controlled to be restored to the initial speed at a preset acceleration, so that the bubbles in the inlet pipeline with pipeline failure are drained to the centrifugal container. Understandably, the air pressure in the centrifugal container will show a trend of gradually decreasing negative pressure under the driving of the pump to drain the liquid, and the liquid in the inlet pipeline will have an extraction pressure to extract the liquid and gas in the inlet pipeline as the air pressure in the centrifugal container decreases, so that the gas and liquid in the inlet pipeline are pumped into the centrifugal container, thereby pumping the gas or bubbles at a high place into the centrifugal container.

[0074] In the above step S3033, the present invention provides a specific embodiment. In this embodiment, the preset acceleration is set to 200 RPM / S.

[0075] When a pipeline fault is identified and the analysis results of pipeline fault identification are started three times in succession, a pop-up window will be displayed to remind the operator to check whether the consumables are installed incorrectly or the tube is broken. If the corresponding problem occurs, the process flow will be terminated. If there is no problem related to the equipment connection, it will continue to be executed.

[0076] like Figure 2 As shown, the present invention also provides a pipeline fault identification device, which includes an acquisition module, an analysis module and an identification module, wherein the acquisition module is used to obtain the current flow rate of the liquid inlet pipeline and to collect and obtain a liquid bag weight array within each preset interval;

[0077] The analysis module is used to perform difference analysis on the liquid bag weight array to obtain analysis results;

[0078] The identification module is used to identify pipeline faults on the current flow rate and the liquid bag weight array according to the analysis result to obtain an identification result, and the identification result reflects whether a pipeline fault occurs in the liquid inlet pipeline.

[0079] like Figure 3 As shown, the present invention also provides a pipeline fault identification system, including a liquid inlet pipeline, a centrifugal container 6, a liquid discharge pipeline, a pump 5 and a controller, wherein the controller is used to execute the pipeline fault identification method as described above.

[0080] The centrifugal container 6 is provided with a first interface 61 and a second interface 62 communicating with its inner cavity, the liquid inlet ends of the three liquid inlet pipelines are connected to the liquid bag 41, and the first electromagnetic pinch valve 1, the second electromagnetic pinch valve 2 and the third electromagnetic pinch valve 3 are respectively provided on the liquid outlet ends of the three liquid inlet pipelines. The three liquid inlet pipelines are gathered into one pipeline through the three electromagnetic pinch valves, and the pipeline is connected to the first interface 61 of the centrifugal container 6, and the first bubble sensor 21, the fourth electromagnetic pinch valve 8 and the second bubble sensor 22 are sequentially provided between the pipeline and the first interface 61 of the centrifugal container 6.

[0081] Further, the second interface 62 of the centrifugal container 6 is connected to the pump 5. In this embodiment, the pump 5 is specifically selected as a peristaltic pump. A first three-way pipe 610, a fifth electromagnetic pinch valve 14, a third bubble sensor 25 (the bubble sensor is used to detect whether there is liquid flowing in the pipeline passing through the bubble sensor, and is a non-contact sensor) and a second pressure sensor 24 (the pressure sensor is used to detect the pressure in the pipeline passing through the pressure sensor, Figure 1 The pressure sensor in the pump is used to detect the pipeline before and / or after the pump. It is a non-contact sensor that indirectly detects the pressure in the centrifugal container and can measure the pressure under negative pressure. The outlet of the peristaltic pump 5 is connected to the drainage container 40. The first pressure sensor 23 and the sixth electromagnetic pinch valve 11 are sequentially arranged between the outlet of the peristaltic pump 5 and the drainage container 40.

[0082] In the above embodiment, a first three-way pipe is provided on the pipeline of the outlet of the second interface 62 of the centrifugal unit 6, and one outlet of the first three-way pipe is connected to the fifth electromagnetic pinch valve 14, and the other outlet is connected to the seventh electromagnetic pinch valve 13, and the outlet of the seventh electromagnetic pinch valve 13 is connected to the air filter 30. In addition, three drainage containers 40 are provided in this embodiment, and the outlets of the sixth electromagnetic pinch valve 11 are connected to the three drainage containers 40 respectively through a four-way connector 110.

[0083] Each module in the above-mentioned controller can be implemented in whole or in part by software, hardware and a combination thereof. The controller includes a processor, a memory, a network interface and a database connected by a system bus. Each module of the controller can be embedded in or independent of the processor in hardware form, or can be stored in the memory in software form, so that the processor calls and executes the operations corresponding to the above modules. Among them, the processor is used to provide computing and control capabilities. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database is used to store the data used by the culture medium replacement method in the above-mentioned embodiment. The controller connects to a pump and controls the pump, and controls the centrifugal rotation of the centrifugal container.

[0084] The pipeline fault identification method, device and system provided by the present invention can automatically detect whether there is a fault in the pipeline without manual monitoring, and execute corresponding discharge measures for the pipeline fault, thereby avoiding long-term stagnation, ensuring the quality and accuracy of the cell preparation process, and improving the accuracy and reliability of cell preparation.

[0085] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pipeline fault identification method, characterized in that: include: Obtain the current flow rate of the liquid inlet pipeline, and collect the liquid bag weight array at each preset interval; Performing difference analysis on the liquid bag weight array to obtain analysis results; According to the analysis result, pipeline fault identification is performed on the current flow rate and the liquid bag weight array to obtain an identification result; It is determined whether a pipeline fault occurs in the liquid inlet pipeline based on the identification result.

2. The pipeline fault identification method according to claim 1, characterized in that: Before obtaining the current flow rate, the following steps are included: Control the preset running time of continuous liquid inflow in the liquid inlet pipeline; The current flow rate is determined according to the flow rate of the preset running time.

3. The pipeline fault identification method according to claim 1, characterized in that: Performing difference analysis on the liquid bag weight array to obtain analysis results, including: Calculate the difference between two equal intervals from the liquid bag weight array to obtain at least one interval difference; A threshold value is determined for each of the interval differences to obtain the analysis result.

4. The pipeline fault identification method according to claim 3, characterized in that: The performing threshold determination on each of the interval differences to obtain the analysis result includes: comparing each of said interval differences to a reduction threshold; When each of the interval differences is less than the reduction threshold, an analysis result of starting pipeline fault identification is obtained; When any of the interval differences is greater than or equal to the reduction threshold, a result of continued analysis is obtained.

5. The pipeline fault identification method according to claim 1, characterized in that: According to the analysis result, pipeline fault identification is performed on the current flow rate and the fluid bag weight array to obtain an identification result, including: When the analysis result is to start pipeline fault identification, summing the differences between the array elements in the liquid bag weight array to obtain a difference sum; The recognition result is determined according to the current flow rate and the sum of the differences.

6. The pipeline fault identification method according to claim 5, characterized in that: The determining the recognition result according to the current flow rate and the difference value includes: Processing the current flow rate by a preset multiple to obtain a judgment threshold; When the sum of the difference is less than the judgment threshold, identifying a pipeline fault recognition result; When the sum of the differences is greater than or equal to the judgment threshold, a recognition result indicating no pipeline fault is identified.

7. The pipeline fault identification method according to claim 1, characterized in that: According to the analysis result, pipeline fault identification is performed on the current flow rate and the liquid bag weight array, and after the identification result is obtained, the method includes: When the identification result is a pipeline fault, the current process is terminated, and the centrifugal speed of the centrifugal container connected to the liquid inlet pipeline is controlled to be adjusted from the initial speed to the exhaust speed according to the preset deceleration rate, and the preset low speed duration is maintained; the liquid inlet pipeline and the centrifugal container contain liquid; The pump speed is controlled to a preset pump speed, so that the centrifugal container is drained and expanded; the pump drives the liquid in the drainage pipeline to be discharged to the drainage container; the drainage pipeline is connected to the centrifugal container; After the liquid discharge and volume expansion process, the centrifugal speed of the centrifugal container is controlled to recover to the initial speed at a preset acceleration, so that the bubbles caused by pipeline failure in the liquid inlet pipeline are drained to the centrifugal container.

8. The pipeline fault identification method according to claim 7, characterized in that: The control pump speed is set to a preset pump speed, so that the centrifugal container is drained and expanded, including: The control valve in the liquid inlet pipeline close to the centrifugal container is closed, and the pump is controlled to run at the preset pump speed for the preset expansion time to complete the liquid discharge and expansion process.

9. A pipeline fault identification device, characterized in that: include: An acquisition module is used to acquire the current flow rate of the liquid inlet pipeline and to collect and obtain the liquid bag weight array within each preset interval; An analysis module, used for performing difference analysis on the liquid bag weight array to obtain analysis results; The identification module is used to identify the pipeline fault on the current flow rate and the liquid bag weight array according to the analysis result to obtain an identification result; and judge whether the pipeline fault occurs in the liquid inlet pipeline through the identification result.

10. A pipeline fault identification system, characterized in that: It comprises a liquid inlet pipeline, a centrifugal container, a liquid discharge pipeline, a pump and a controller, wherein the controller is used to execute the pipeline fault identification method according to any one of claims 1 to 8.

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