Method, system, device and equipment for testing integrity of exhaust filter

Abstract

The invention discloses a method, a system, a device and equipment for testing integrity of an exhaust filter, which are characterized in that under the condition that compressed air is communicated to the exhaust filter, an inlet pressure value and an outlet pressure change value of the exhaust filter are acquired in real time, and the integrity of a filter membrane is evaluated by integrating the inlet pressure value and the outlet pressure value. Due to the fact that the exhaust filter is provided with the exhaust hole, under the ideal condition, if the filter membrane is complete, the outlet pressure change value should be zero, but a threshold value is set for the outlet pressure change value by considering the influences of the compressed air flow speed, the pressure sensor sensitivity and the like. If the inlet pressure value exceeds a standard bubble point value provided by a manufacturer and used for detection, and the outlet pressure change value still does not exceed a set threshold value, it is indicated that the filter membrane passes the integrity test. By adopting the scheme of the invention, the complexity of the completion test of the exhaust filter can be greatly reduced, and meanwhile, the accuracy of the test result can be ensured.

Description

Technical Field

[0001] This application belongs to the field of filter integrity testing, and particularly relates to a method, system, apparatus, equipment, computer-readable storage medium, and computer program product for testing the integrity of an exhaust filter. Background Technology

[0002] In the pharmaceutical field, filters serve as a measure to ensure sterility. Their main principle is that when particulate matter and microorganisms pass through a filter membrane, these substances are intercepted, allowing the medication to pass through smoothly. This ensures the sterility of the medication, preventing contamination by microorganisms and particulate matter, and guaranteeing patient safety. If the filter membrane is damaged, microorganisms and particulate matter can pass through easily, compromising the safety of the medication.

[0003] Therefore, determining the integrity of the filter membrane is a crucial means of ensuring drug safety. Traditional filters lack vents, preventing air from passing through after drug filtration. Leak detection can be achieved by introducing air after filtration and measuring the air pressure. However, with vented filters, air can still escape through the vent after drug filtration, making it impossible to test filter integrity using traditional methods. Summary of the Invention

[0004] This application provides a method, system, apparatus, device, computer-readable storage medium, and computer program product for testing the integrity of an exhaust filter, which can perform integrity testing on the filter membrane of a filter with exhaust holes.

[0005] In a first aspect, embodiments of this application provide a method for testing the integrity of an exhaust filter, the method comprising: With compressed air connected to the exhaust filter, obtain the inlet pressure value and outlet pressure change value of the exhaust filter; If the inlet pressure exceeds the standard bubble point value and the outlet pressure change does not exceed the threshold, the filter membrane of the exhaust filter is deemed to have passed the integrity test.

[0006] Secondly, embodiments of this application provide an exhaust filter integrity testing system, the system comprising: Air source connection component, used to connect to a compressed air source, so that compressed air can be connected to the exhaust filter; The intake pressure gauge is connected to the inlet of the exhaust filter and is used to monitor whether the inlet pressure value reaches the standard bubble point value. A leak pressure gauge is connected to the outlet of the exhaust filter to monitor changes in outlet pressure. The judgment device, connected to the inlet pressure gauge and the leakage pressure gauge, is used to determine whether the integrity test of the filter membrane of the exhaust filter has passed when the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold value, or to determine whether the integrity test of the filter membrane of the exhaust filter has failed when the inlet pressure value does not exceed the standard bubble point value and the outlet pressure change value exceeds the threshold value.

[0007] Thirdly, embodiments of this application provide an exhaust filter integrity testing device, the device comprising: The acquisition module is used to acquire the inlet pressure value and outlet pressure change value of the exhaust filter when compressed air is connected to the exhaust filter; The judgment module is used to determine whether the integrity test of the filter membrane of the exhaust filter has passed when the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold.

[0008] Fourthly, embodiments of this application provide an exhaust filter integrity testing device, the device comprising: a processor and a memory storing computer program instructions; the processor, when executing the computer program instructions, implements an exhaust filter integrity testing method as described in the first aspect.

[0009] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer program instructions that, when executed by a processor, implement an exhaust filter integrity testing method as described in the first aspect.

[0010] In a sixth aspect, embodiments of this application provide a computer program product in which instructions, when executed by a processor of an electronic device, cause the electronic device to perform an exhaust filter integrity testing method as described in the first aspect.

[0011] This application discloses a method, system, apparatus, device, computer-readable storage medium, and computer program product for testing the integrity of an exhaust filter. With compressed air connected to the exhaust filter, it acquires the inlet pressure and outlet pressure change values ​​of the exhaust filter in real time and evaluates the integrity of the filter membrane by combining the inlet and outlet pressure values. Since the exhaust filter has an exhaust port, ideally, if the filter membrane is intact, the outlet pressure change value should be 0. However, considering the influence of compressed air flow rate, pressure sensor sensitivity, etc., a threshold value is set for the outlet pressure change value. If the outlet pressure change value still does not exceed the set threshold value even when the inlet pressure value has exceeded the standard bubble point value provided by the manufacturer for testing, it indicates that the filter membrane has passed the integrity test. Using the solution of this application can greatly reduce the complexity of exhaust filter integrity testing while ensuring the accuracy of the test results. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic flowchart of an exhaust filter integrity testing method provided in one embodiment of this application; Figure 2 This is a schematic diagram of an exhaust filter integrity testing system provided in one embodiment of this application; Figure 3 This is a schematic diagram of the structure of an exhaust filter integrity testing device provided in an embodiment of this application; Figure 4 This is a schematic diagram of the hardware structure of an exhaust filter integrity testing device provided in an embodiment of this application. Detailed Implementation

[0014] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0015] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0016] For exhaust filters, i.e. filters with exhaust vents, there are currently no instruments on the market that can perform fully automated integrity testing; manual control is required. Specifically, a test pipeline consists of manually adjustable compressed air, a pressure monitoring component, and connected piping at the air inlet of the exhaust filter. During use, the compressed air inlet pressure is manually adjusted, and the presence of bubbles at the rear end of the filter membrane is observed. The compressed air pressure at this point is recorded as the bubble point value of the filter membrane. The measured bubble point value is then compared to the manufacturer's standard lower limit. If the measured bubble point value is lower than the manufacturer's standard lower limit, it indicates that the filter membrane has large gaps or cracks, its integrity has been compromised, and its sterilization effect cannot be guaranteed. The main disadvantages of this testing method are: 1. Judging the bubble point by manually observing bubbles does not meet the requirements of automated data integrity testing and introduces a certain degree of error; 2. It is difficult to operate, requiring manual connection of the pipeline, which is inconvenient; 3. Data cannot be recorded electronically.

[0017] To address the problems of the prior art, embodiments of this application provide a method, system, apparatus, device, computer-readable storage medium, and computer program product for testing the integrity of an exhaust filter. The following first describes a method for testing the integrity of an exhaust filter provided by an embodiment of this application.

[0018] Figure 1 A schematic flowchart of an exhaust filter integrity testing method according to an embodiment of this application is shown. Figure 1 As shown, the testing method may include the following steps: S110: When compressed air is connected to the exhaust filter, the inlet pressure value and outlet pressure change value of the exhaust filter are obtained.

[0019] S120: If the inlet pressure exceeds the standard bubble point value and the outlet pressure change does not exceed the threshold, the filter membrane of the exhaust filter is deemed to have passed the integrity test.

[0020] Because there is an exhaust port between the downstream of the filter membrane and the filter outlet of the exhaust filter, this section is essentially open to the atmosphere. Therefore, ideally, if the integrity of the filter membrane is not compromised, the outlet pressure should be equal to the external atmospheric pressure, and the pressure change should be zero. However, considering factors such as the internal compressed air velocity and the external atmospheric velocity, unavoidable fluctuations will occur in the reading of the pressure sensor at the exhaust filter outlet. A threshold value can be set for the outlet pressure change. If the outlet pressure change does not exceed this threshold, it can be considered that the outlet pressure has not changed, indicating that the integrity of the filter membrane is still normal.

[0021] There is no vent between the upstream of the filter membrane and the filter inlet of the exhaust filter. Therefore, the pressure at the filter inlet will change and gradually increase as compressed air flows through it. Using the standard bubble point value provided by the manufacturer as the dividing line, if the inlet pressure value has reached the standard bubble point value, but the change in the outlet pressure value is still within the threshold, it can be said that the filter membrane of the exhaust filter is not damaged and passes the integrity test.

[0022] Unlike traditional bubble point testing methods, the solution in this embodiment eliminates the need to observe whether bubble points are generated at the rear end of the exhaust filter, effectively avoiding errors. Furthermore, as described above, the required testing components are relatively simple, requiring only a pressure sensor to measure the inlet and outlet pressures of the exhaust filter and automated electronic devices to automatically determine integrity based on these pressures. In summary, the solution presented in this application significantly reduces the complexity of exhaust filter integrity testing while ensuring the accuracy of the test results. Moreover, it not only enables automated integrity testing of exhaust filters but also allows for batch integrity testing, greatly improving testing efficiency.

[0023] This solution is particularly suitable for integrity testing of needle filters with vent holes in the field of radiopharmaceuticals. In the field of radiopharmaceuticals, integrity testing cannot be performed using liquids, as this would cause radioactive contamination. This solution only requires compressed air and monitoring the inlet and outlet pressures of the vent filter to complete the integrity test, thus avoiding contamination. The testing procedure is also relatively simple.

[0024] In one embodiment, an exhaust filter integrity test method may further include: If the inlet pressure value does not exceed the standard bubble point value, but the outlet pressure change value exceeds the threshold, the filter membrane of the exhaust filter is deemed to have failed the integrity test.

[0025] Compared to the scenario described in the previous embodiment, in this embodiment, the integrity of the filter membrane is determined to be compromised by changes in downstream pressure even before the inlet pressure reaches the standard bubble point. In this case, to save compressed air and testing energy, there is no need to further increase the inlet pressure to continue the test.

[0026] In summary, the inventors discovered through research that monitoring changes in the outlet pressure of an exhaust filter can reflect changes in its downstream pressure, thereby determining the integrity of the filter membrane. This is because if the filter membrane is damaged, the pressure at the downstream end of the exhaust filter will increase when compressed air is introduced. Based on this principle, the inventors also wanted to know not only whether the filter membrane is damaged, but also the corresponding test pressure if the membrane is damaged. Therefore, they additionally monitored the inlet pressure of the exhaust filter to reflect the upstream pressure. In conclusion, this solution comprehensively considers the inlet and outlet pressures of the exhaust filter to provide a timely and effective assessment of the filter membrane's integrity.

[0027] In one embodiment, an exhaust filter integrity test method may further include: Integrity test results of the filter membrane of the printed exhaust filter.

[0028] With compressed air connected to the exhaust filter, the inlet and outlet pressure changes of the exhaust filter are acquired in real time. This allows us to identify the curves of the inlet pressure change and the outlet pressure change, or the outlet pressure itself. To facilitate a more intuitive observation of the pressure changes during the test, the test results, which include these curves, can be recorded and printed out.

[0029] In one embodiment, an exhaust filter integrity test method may further include: Control the intake volume and speed of compressed air to ensure that the inlet pressure of the exhaust filter does not exceed the upper pressure limit, and the upper pressure limit is greater than or equal to the standard bubble point value.

[0030] Automated control of compressed air intake can be achieved through adjustable pressure software. Simultaneously, to avoid wasting compressed air and to prevent excessive intake volume or speed that could damage the filter membrane integrity, the compressed air intake conditions need to be controlled to ensure stable integrity testing. Furthermore, it is unnecessary for the exhaust filter inlet pressure to continuously rise. If the filter membrane is found to be damaged before the inlet pressure reaches the standard bubble point, the test can be terminated. Alternatively, if the inlet pressure reaches or exceeds the standard bubble point, but the outlet pressure change does not exceed the threshold, it can be considered unchanged, indicating that the filter membrane still possesses integrity, and the test can also be terminated. In summary, to efficiently utilize compressed air and avoid unnecessary losses, this embodiment controls the exhaust filter inlet pressure below a certain upper pressure limit by controlling the intake conditions.

[0031] In one embodiment, an exhaust filter integrity test method may further include: After obtaining the integrity test results, disconnect the compressed air and exhaust filter.

[0032] If there is no current need for batch testing of exhaust filter integrity, the connection between compressed air and exhaust filter can be disconnected after obtaining the current exhaust filter test results. For example, the compressed air source can be turned off directly, or the compressed air source can be turned off first by blocking the compressed air from entering through a three-way valve connected upstream of the exhaust filter, and then the compressed air source can be turned off, etc., in order to save the amount of compressed air used.

[0033] Figure 2 A schematic diagram of an exhaust filter integrity testing system according to an embodiment of this application is shown, as follows: Figure 2 As shown, the testing system may include: Air source connection component, used to connect to a compressed air source so that compressed air can be connected to the exhaust filter.

[0034] The intake pressure gauge is connected to the inlet of the exhaust filter and is used to monitor whether the inlet pressure value reaches the standard bubble point value.

[0035] A leak pressure gauge is connected to the outlet of the exhaust filter to monitor changes in outlet pressure.

[0036] The judgment device, connected to the inlet pressure gauge and the leakage pressure gauge, is used to determine whether the integrity test of the filter membrane of the exhaust filter has passed when the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold value, or to determine whether the integrity test of the filter membrane of the exhaust filter has failed when the inlet pressure value does not exceed the standard bubble point value and the outlet pressure change value exceeds the threshold value.

[0037] As can be seen, the test system of this application embodiment has a relatively simple composition. The inlet pressure gauge and the leakage pressure gauge can be integrated into the test system in a movable connection manner. In this way, when conducting the test, there is no need to manually connect the system pipeline. Instead, the exhaust filter to be tested is placed directly at the corresponding test position, allowing the inlet pressure gauge to monitor its inlet pressure value and the leakage pressure gauge to monitor its outlet pressure change value.

[0038] In one embodiment, an exhaust filter integrity testing system may further include a fixing component for fixing the exhaust filter to perform integrity testing.

[0039] For example, a specialized fixture can be designed to completely cover or connect to the inlet and outlet of the exhaust filter. The fixture itself has a standard test interface and can seal and press the exhaust filter into the fixture using clips, bolts, or quick-lock mechanisms. This similar approach allows for flexible replacement of the exhaust filter test object, thereby enabling batch testing.

[0040] In one embodiment, an exhaust filter integrity testing system may further include a manually adjustable valve connected to an air source connection component for adjusting the upper pressure limit within the system after compressed air intake.

[0041] In one embodiment, an exhaust filter integrity testing system may further include an automatic regulating valve connected to a manual regulating valve for controlling the intake speed and volume of compressed air according to a pressure limit.

[0042] In one embodiment, an exhaust filter integrity testing system may further include an on / off valve connected to an automatic regulating valve for disconnecting the compressed air and the exhaust filter after obtaining the integrity test results.

[0043] In other words, this application can adopt a series cooperation mode in which the manual regulating valve is set upstream of the automatic regulating valve. The manual regulating valve first sets a maximum supply pressure, determining the upper pressure limit within the subsequent system. Then, below this pressure limit, the automatic regulating valve achieves precise, automated, and continuous pressure regulation. The automatic regulating valve can be a proportional valve. Furthermore, after testing, the connection between compressed air and the exhaust filter can be disconnected via an on / off valve to avoid compressed air loss and excessive pressure in the exhaust filter, which could unnecessarily damage the originally intact filter membrane.

[0044] In one embodiment, an exhaust filter integrity testing system may further include a printer connected to a judgment device for printing the integrity test results of the filter membrane of the exhaust filter.

[0045] Based on the exhaust filter integrity testing method provided in the above embodiments, this application also provides a specific implementation of an exhaust filter integrity testing device. Please refer to the following embodiments.

[0046] First see Figure 3 The exhaust filter integrity testing device provided in this application includes the following modules: The acquisition module 310 is used to acquire the inlet pressure value and outlet pressure change value of the exhaust filter when compressed air is connected to the exhaust filter; The judgment module 320 is used to determine whether the integrity test of the filter membrane of the exhaust filter is passed when the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold.

[0047] In one embodiment, the determination module 320 can also be used to determine that the filter membrane of the exhaust filter has failed the integrity test if the inlet pressure value does not exceed the standard bubble point value and the outlet pressure change value exceeds the threshold.

[0048] In one embodiment, an exhaust filter integrity testing apparatus may further include a printing module 330 for printing the integrity test results of the filter membrane of the exhaust filter.

[0049] In one embodiment, an exhaust filter integrity testing device may further include a control module 340 for controlling the intake volume and intake speed of compressed air, such that the inlet pressure value of the exhaust filter does not exceed the upper pressure limit, and the upper pressure limit is greater than or equal to the standard bubble point value.

[0050] In one embodiment, an exhaust filter integrity testing device may further include a disconnection module 350 for disconnecting the connection between compressed air and the exhaust filter after obtaining the integrity test results.

[0051] Figure 4 A schematic diagram of the hardware structure of an exhaust filter integrity testing device provided in an embodiment of this application is shown.

[0052] An exhaust filter integrity testing device may include a processor 401 and a memory 402 storing computer program instructions.

[0053] Specifically, the processor 401 may include a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0054] Memory 402 may include mass storage for data or instructions. For example, and not limitingly, memory 402 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 402 may include removable or non-removable (or fixed) media. Where appropriate, memory 402 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 402 is non-volatile solid-state memory.

[0055] In a particular embodiment, memory 402 may include read-only memory (ROM), random access memory (RAM), disk storage media device, optical storage media device, flash memory device, electrical, optical, or other physical / tangible memory storage device. Thus, generally, memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described with reference to the method according to one aspect of this disclosure.

[0056] The processor 401 reads and executes computer program instructions stored in the memory 402 to implement any of the exhaust filter integrity testing methods in the above embodiments.

[0057] In one example, an exhaust filter integrity testing device may further include a communication interface 404 and a bus 410. Wherein, as Figure 4 As shown, the processor 401, memory 402, and communication interface 404 are connected through bus 410 and complete communication with each other.

[0058] Communication interface 404 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0059] Bus 410 includes hardware, software, or both, that couples components of an online data traffic metering device together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 410 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, any suitable bus or interconnect is contemplated herein.

[0060] This exhaust filter integrity testing equipment can execute the integrity testing method described in this application embodiment based on the currently acquired inlet pressure value and outlet pressure change value of the exhaust filter, thereby achieving a combination of... Figure 1 and Figure 2 This describes a method for testing the integrity of an exhaust filter.

[0061] Furthermore, in conjunction with the exhaust filter integrity testing method described in the above embodiments, this application embodiment can provide a computer storage medium for implementation. This computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the methods described in the above embodiments.

[0062] This application also provides a computer program product, including a computer program that, when executed, implements any of the exhaust filter integrity testing methods described in the above embodiments.

[0063] It should be clarified that this application is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this application is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this application.

[0064] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this application are programs or code segments used to perform the required tasks. Programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried on a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0065] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0066] The aspects of this disclosure have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this disclosure. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0067] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for testing the integrity of an exhaust filter, characterized in that, The method includes: With compressed air connected to the exhaust filter, the inlet pressure value and outlet pressure change value of the exhaust filter are obtained; If the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold, the filter membrane of the exhaust filter is determined to have passed the integrity test.

2. The method according to claim 1, characterized in that, The method further includes: If the inlet pressure value does not exceed the standard bubble point value, and the outlet pressure change value exceeds the threshold, the filter membrane of the exhaust filter is determined to have failed the integrity test.

3. The method according to claim 1 or 2, characterized in that, The method further includes: Print the integrity test results of the filter membrane of the exhaust filter.

4. The method according to claim 1, characterized in that, The method further includes: The intake volume and intake speed of the compressed air are controlled so that the inlet pressure of the exhaust filter does not exceed the upper pressure limit, which is greater than or equal to the standard bubble point value. After obtaining the integrity test results, disconnect the compressed air and the exhaust filter.

5. An exhaust filter integrity testing system, characterized in that, The system includes: An air source connection component is used to connect a compressed air source, enabling compressed air to be connected to the exhaust filter; An intake pressure gauge is connected to the inlet of the exhaust filter to monitor whether the inlet pressure value reaches the standard bubble point value. A leakage pressure gauge is connected to the outlet of the exhaust filter to monitor changes in outlet pressure. The judgment device, connected to the inlet pressure gauge and the leakage pressure gauge, is used to determine that the integrity test of the filter membrane of the exhaust filter has passed when the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold value, or to determine that the integrity test of the filter membrane of the exhaust filter has failed when the inlet pressure value does not exceed the standard bubble point value and the outlet pressure change value exceeds the threshold value.

6. The system according to claim 5, characterized in that, The system also includes a fixing component for fixing the exhaust filter to perform an integrity test.

7. The system according to claim 5, characterized in that, The system also includes: A manual regulating valve, connected to the air source connection component, is used to adjust the upper pressure limit in the system after the compressed air is introduced; An automatic regulating valve, connected to the manual regulating valve, is used to control the intake speed and intake volume of the compressed air according to the upper pressure limit; An on / off valve, connected to the automatic regulating valve, is used to disconnect the compressed air and the exhaust filter after obtaining the integrity test results.

8. The system according to claim 5, characterized in that, The system also includes a printer connected to the judgment device for printing the integrity test results of the filter membrane of the exhaust filter.

9. An exhaust filter integrity testing device, characterized in that, The device includes: The acquisition module is used to acquire the inlet pressure value and outlet pressure change value of the exhaust filter when compressed air is connected to the exhaust filter; The determination module is used to determine that the integrity test of the filter membrane of the exhaust filter has passed when the inlet pressure value exceeds the standard bubble point value and the outlet pressure change value does not exceed the threshold.

10. An exhaust filter integrity testing device, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements an exhaust filter integrity test method as described in any one of claims 1-4.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement an exhaust filter integrity test method as described in any one of claims 1-4.

12. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the electronic device, the electronic device performs an exhaust filter integrity test method as described in any one of claims 1-4.

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