CN111366314A - Airtightness detection method and device and storage medium - Google Patents
Airtightness detection method and device and storage medium Download PDFInfo
- Publication number
- CN111366314A CN111366314A CN202010342716.5A CN202010342716A CN111366314A CN 111366314 A CN111366314 A CN 111366314A CN 202010342716 A CN202010342716 A CN 202010342716A CN 111366314 A CN111366314 A CN 111366314A
- Authority
- CN
- China
- Prior art keywords
- pressure value
- workpiece
- cavity
- value
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3263—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers using a differential pressure detector
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The application relates to an air tightness detection method, an air tightness detection device and a storage medium, and belongs to the technical field of computers, wherein the method comprises the following steps: controlling the inflation assembly to inflate the cavity of the workpiece to be tested; when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, controlling the inflation assembly to stop inflating; acquiring a first pressure value of the inflated workpiece cavity at the current moment; determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at the historical moment; when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after the test time is long; determining whether the air tightness of the workpiece to be detected is normal or not based on the difference value between the third pressure value and the steady-state pressure value; the problems of complicated air tightness detection process and low detection efficiency in the prior art can be solved; the air tightness detection efficiency can be improved.
Description
Technical Field
The application relates to an air tightness detection method, an air tightness detection device and a storage medium, and belongs to the technical field of computers.
Background
In the manufacturing process of the submersible motor, the air tightness detection of semi-finished products and accessory parts of the motor at different stages is required.
The existing air tightness detection method comprises the following steps: inflating the cavity of the workpiece to be tested through an inflation valve of the inflation assembly; and when the pressure in the cavity of the workpiece to be detected reaches a first set value, closing the inflation valve and opening the exhaust valve of the inflation assembly so as to slowly reduce the pressure in the cavity to a second set value. And after the time T, comparing the pressure value in the cavity of the workpiece to be detected with a second set value, and judging whether the tightness of the workpiece to be detected is intact.
In order to ensure that the gas in the cavity of the workpiece to be tested reaches a stable state before the gas tightness of the workpiece to be tested is detected, the conventional test method needs to inflate the workpiece to be tested until the pressure value reaches a first set value and then exhaust the workpiece until the pressure value reaches a second set value, so that the gas tightness detection process is complicated and the detection efficiency is low.
Disclosure of Invention
The application provides a method and a device for detecting air tightness and a storage medium, which can solve the problems of complex air tightness detection process and low detection efficiency in the prior art. The application provides the following technical scheme:
in a first aspect, a method of hermeticity detection, the method comprising:
controlling the inflation assembly to inflate the cavity of the workpiece to be tested;
when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, controlling the inflation assembly to stop inflating;
acquiring a first pressure value of the inflated workpiece cavity at the current moment;
determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at a historical moment;
when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after testing;
and determining whether the air tightness of the measured workpiece is normal or not based on a difference value between the third pressure value and a steady-state pressure value, wherein the steady-state pressure value is a pressure value corresponding to the moment when the gas in the inflated measured workpiece cavity is determined to be in a steady state.
Optionally, the determining whether the gas in the inflated measured workpiece cavity is in a stable state includes:
after the inflation is stopped, if the duration that the absolute value of the difference between the first pressure value and the second pressure value at the historical moment is smaller than the first difference threshold reaches a preset duration, determining that the gas in the inflated workpiece cavity is in a stable state.
Optionally, the determining whether the gas in the inflated measured workpiece cavity is in a stable state includes:
after the inflation is stopped, if the duration that the ratio of the first pressure value to the second pressure value at the historical moment is greater than the first ratio threshold reaches a preset duration, determining that the gas in the inflated workpiece cavity is in a stable state.
Optionally, the first difference threshold is determined based on a resolution of a pressure acquisition assembly used for acquiring a pressure value within the measured workpiece cavity.
Optionally, the historical time refers to a previous collection time of the first pressure value.
Optionally, the determining whether the airtightness of the workpiece to be tested is normal includes:
if the absolute value of the difference between the third pressure value and the steady state pressure value is smaller than a second difference threshold value, determining that the air tightness of the workpiece to be tested is normal;
and if the absolute value of the difference value between the third pressure value and the steady-state pressure value is greater than or equal to a second difference value threshold value, determining that the air tightness of the detected workpiece is abnormal.
Optionally, the determining whether the airtightness of the workpiece to be tested is normal includes:
if the ratio of the third pressure value to the steady-state pressure value is larger than a second ratio threshold value, determining that the air tightness of the workpiece to be tested is normal;
and if the ratio of the third pressure value to the steady-state pressure value is smaller than or equal to a second ratio threshold value, determining that the air tightness of the detected workpiece is abnormal.
In a second aspect, there is provided an air-tightness detecting device, comprising:
the first inflation control module is used for controlling the inflation assembly to inflate the cavity of the workpiece to be tested;
the second inflation control module is used for controlling the inflation assembly to stop inflating when the pressure value of the cavity of the workpiece to be tested reaches a preset pressure value;
the first pressure value acquisition module is used for acquiring a first pressure value of the inflated workpiece cavity at the current moment;
the stable state determination module is used for determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at a historical moment;
the second pressure value acquisition module is used for acquiring a third pressure value of the cavity of the workpiece to be tested after the testing time is long when the gas in the inflated cavity of the workpiece to be tested is in a stable state;
and the gas tightness condition determining module is used for determining whether the gas tightness of the measured workpiece is normal or not based on a difference value between the third pressure value and a steady state pressure value, wherein the steady state pressure value is a pressure value corresponding to the moment when the gas in the inflated measured workpiece cavity is determined to be in a steady state.
In a third aspect, an apparatus for detecting air tightness is provided, the apparatus comprising a processor and a memory; the memory has stored therein a program that is loaded and executed by the processor to implement the airtightness detection method according to the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, wherein the storage medium stores a program, and the program is used for implementing the air tightness detection method according to the first aspect when executed by the processor.
The beneficial effect of this application lies in: inflating the cavity of the workpiece to be tested by controlling the inflation assembly; when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, controlling the inflation assembly to stop inflating; acquiring a first pressure value of the inflated workpiece cavity at the current moment; determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at the historical moment; when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after the test time is long; determining whether the air tightness of the workpiece to be detected is normal or not based on the difference value between the third pressure value and the steady-state pressure value; the problems of complicated air tightness detection process and low detection efficiency in the prior art can be solved; whether the gas in the cavity of the workpiece to be detected reaches a stable state can be determined without slow exhaust, so that the detection efficiency can be improved.
The foregoing description is only an overview of the technical solutions of the present application, and in order to make the technical solutions of the present application more clear and clear, and to implement the technical solutions according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a gas tightness detection system according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for detecting hermeticity according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a process for detecting hermeticity according to an embodiment of the present application;
fig. 4 is a block diagram of an air-tightness detecting device according to an embodiment of the present application;
fig. 5 is a block diagram of an air-tightness detecting device according to an embodiment of the present application.
Detailed Description
The following detailed description of embodiments of the present application will be described in conjunction with the accompanying drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
Fig. 1 is a schematic structural diagram of a gas tightness detection system 100 according to an embodiment of the present application, where as shown in fig. 1, the system 100 at least includes: the air tightness detection device 110, the inflation assembly 120 and the pressure acquisition assembly 130 are in communication connection with the air tightness detection device 110.
The gas filling assembly 120 refers to an assembly that allows gas in the workpiece to be measured to flow or stop and can control the flow of the gas. The inflation assembly 120 includes an inflation valve 121 and an exhaust valve 122. The inflation assembly 120 inflates the cavity of the workpiece to be tested by opening the inflation valve 121 and closing the exhaust valve 122; the inflation assembly 120 realizes the air exhaust of the cavity of the workpiece to be tested by closing the inflation valve 121 and opening the exhaust valve 122.
The workpiece to be tested is an object to be subjected to airtightness detection, and the workpiece to be tested generally has a cavity. Such as a sealed container, an airplane shell, a steel ring, etc., and the present embodiment does not specifically limit the type of the workpiece to be measured.
The pressure collection component 130 is used for collecting the pressure value of the current environment. Optionally, the pressure acquisition assembly 130 is a pressure sensor.
In this application, pressure acquisition assembly 130 is used for gathering the pressure value of the measured workpiece cavity after aerifing to send the pressure value to gas tightness detection device 110.
The airtightness detection apparatus 110 is connected to the inflation valve 121 and the exhaust valve 122 in the inflation assembly 120 in communication (wired communication or wireless communication). The air tightness detection device 110 controls the inflation assembly 120 to inflate or deflate the cavity of the workpiece to be detected by controlling the opening and closing of the inflation valve 121 and the exhaust valve 122. Alternatively, the airtightness detection apparatus 110 may be a device equipped with a Programmable Controller (PLC), but may also be a device equipped with other devices having control and processing capabilities. The air tightness detecting device 110 may be a computer, a mobile phone, a tablet computer, a wearable device, a notebook computer, etc., and the present embodiment does not limit the type of the air tightness detecting device 110.
In this embodiment, the air tightness detecting device 110 is used to control the inflation assembly 120 to inflate the cavity of the workpiece to be detected; when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, controlling the inflation assembly 120 to stop inflating; acquiring a first pressure value of the inflated workpiece cavity at the current moment; determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at the historical moment; when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after the test time is long; and determining whether the air tightness of the workpiece to be detected is normal or not based on the difference value between the third pressure value and the steady-state pressure value. The steady state pressure value is a pressure value corresponding to the moment when the gas in the inflated workpiece cavity is determined to be in the steady state.
The pressure values of the cavity of the workpiece to be detected, which are obtained by the air tightness detecting device 110, are all sent by the pressure collecting assembly 130.
Optionally, the preset pressure value, the preset time length, and the test time length are pre-stored in the air tightness detecting device 110, values of the preset pressure value, the preset time length, and the test time length may be set by a user, and values of the preset pressure value, the preset time length, and the test time length are not limited in this embodiment.
Optionally, the historical time refers to a previous collection time of the first pressure value. Of course, the previous n collection times of the collection time of the first pressure value may also be used, where n is an integer greater than 1, and the setting manner of the historical time is not limited in this embodiment.
Optionally, the difference value between the first pressure value and the second pressure value at the historical time may be an absolute value of a difference value between the first pressure value and the second pressure value at the historical time, or may be a ratio between the first pressure value and the second pressure value at the historical time, and the calculation manner of the difference value is not limited in this embodiment.
Optionally, the difference between the third pressure value and the steady-state pressure value may be an absolute value of a difference between the third pressure value and the steady-state pressure value, or may be a ratio between the third pressure value and the steady-state pressure value, and the calculation manner of the difference is not limited in this embodiment.
In the present embodiment, the inflation assembly 120 and the pressure acquisition assembly 130 are implemented in a device independent from the air tightness detection device 110 for example, in other embodiments, both the inflation assembly 120 and the pressure acquisition assembly 130 may be disposed in the air tightness detection device 110, and the implementation manner of the inflation assembly 120 and the pressure acquisition assembly 130 is not limited in this embodiment.
Fig. 2 is a flowchart of a method for detecting air-tightness according to an embodiment of the present application, which is described in this embodiment by taking as an example that the method is applied to the system 100 for detecting air-tightness shown in fig. 1, and the main execution subject of each step is the air-tightness detecting device 110 in the device. The method at least comprises the following steps:
step 201, controlling the inflation assembly to inflate the cavity of the workpiece to be tested.
The air tightness detection device is in communication connection with an inflation valve and an exhaust valve in the inflation assembly. The air tightness detection device controls the inflation valve to open and the exhaust valve to close so as to control the inflation assembly to inflate the cavity of the workpiece to be detected.
And 202, controlling the inflation assembly to stop inflating when the pressure value of the cavity of the workpiece to be tested reaches a preset pressure value.
The preset pressure value is stored in the airtightness detection device in advance.
The air tightness detection device is in communication connection with the pressure acquisition assembly. Acquiring a pressure value acquired by a pressure acquisition assembly in the process of controlling an inflation assembly to inflate a cavity of a workpiece to be detected; when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, the inflation assembly is controlled to stop inflating the cavity of the workpiece to be detected by controlling the inflation valve to be closed and the exhaust valve to be closed; and when the pressure value of the cavity of the workpiece to be measured does not reach the preset pressure value, continuously controlling the inflation assembly to inflate the cavity of the workpiece to be measured.
Optionally, the air tightness detection device may obtain a pressure value acquired by the pressure acquisition assembly in real time; or acquiring the pressure value acquired by the pressure acquisition assembly every acquisition time.
Step 203, acquiring a first pressure value of the inflated workpiece cavity at the current moment.
The current time refers to: and after the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, the air tightness detection device acquires the moment of the pressure value.
And 204, determining whether the gas in the inflated workpiece cavity is in a stable state or not based on the difference value between the first pressure value and the second pressure value at the historical moment.
When the gas in the measured workpiece cavity reaches a stable state, the measured pressure value in the measured workpiece cavity can more accurately reflect whether the gas tightness of the measured workpiece is good or not. Therefore, before verifying whether the air tightness of the workpiece to be tested is good, it is necessary to ensure that the gas in the cavity of the workpiece to be tested reaches a stable state. The existing mode for ensuring that the gas in the cavity of the workpiece to be detected reaches a stable state is as follows: and controlling the inflation assembly to slowly exhaust the tested workpiece. However, this requires the process of opening and closing the exhaust valve, which is cumbersome. In this embodiment, whether the gas in the inflated workpiece cavity is in a stable state is determined based on the difference between the first pressure value and the second pressure value at the historical time, and the processes of opening and closing the exhaust valve are not performed, so that the efficiency of ensuring that the gas in the workpiece cavity reaches the stable state can be improved.
Optionally, the manner of determining whether the gas in the inflated measured workpiece cavity is in a steady state includes, but is not limited to, the following:
the first method comprises the following steps: after the inflation is stopped, if the duration that the absolute value of the difference value between the first pressure value and the second pressure value at the historical moment is smaller than the first difference threshold value reaches a preset duration, determining that the gas in the inflated workpiece cavity is in a stable state; and if the duration of the difference between the first pressure value and the second pressure value at the historical moment is less than the preset duration, determining that the gas in the inflated workpiece cavity is not in a stable state.
Optionally, a preset time duration is pre-stored in the air tightness detecting device, and a value of the preset time duration may be set by a user.
Optionally, the first difference threshold is determined based on a resolution of the pressure acquisition assembly. Resolution refers to the ability of the sensor to sense the smallest change in the measurement. In one example, the first difference threshold is equal to a resolution of the pressure acquisition assembly. In other embodiments, the first difference threshold may also be a multiple of the resolution, and the value of the first difference threshold is not limited in this embodiment.
Such as: and stopping inflating the tested workpiece at the time T1, and acquiring a pressure value every T0 time by the air tightness detection device. At this time, the process that the airtightness detection device determines that the gas in the inflated workpiece cavity is in a stable state includes: calculating PT1+T0-PT0If the value is less than the first difference threshold, continue to calculate PT1+2T0-PT1+T0A value of (d); and circulating in this way, and determining that the gas in the inflated workpiece cavity is in a stable state until nT0 is greater than or equal to the preset time. If there is a P in n T0 durationT1+iT0-PT1+(i-1)T0If the value of (1) is greater than the first difference threshold value, determining that the gas in the inflated workpiece cavity is not in a stable state, making T1 be T1+ iT0, and performing the calculation again to obtain PT1+T0-PT0The value of (c). Wherein n and i are integers greater than 1.
And the second method comprises the following steps: after the inflation is stopped, if the duration that the ratio of the first pressure value to the second pressure value at the historical moment is greater than the first ratio threshold reaches a preset duration, determining that the gas in the inflated workpiece cavity is in a stable state;
and if the duration of the first ratio between the first pressure value and the second pressure value at the historical moment is longer than the preset duration, determining that the gas in the inflated workpiece cavity is not in a stable state.
Optionally, the first ratio threshold is a decimal number close to 1 and less than 1, such as: 0.7, 0.8, etc., and the first ratio threshold is stored in the air tightness detecting device, and the value of the first ratio threshold is not limited in this embodiment.
Such as: and stopping inflating the tested workpiece at the time T1, and acquiring a pressure value every T0 time by the air tightness detection device. At this time, the process that the airtightness detection device determines that the gas in the inflated workpiece cavity is in a stable state includes: calculating PT1+T0/PT0If the value is greater than the first ratio threshold, continue to calculate PT1+2T0/PT1+T0A value of (d); and circulating in this way, and determining that the gas in the inflated workpiece cavity is in a stable state until nT0 is greater than or equal to the preset time. If there is a P in n T0 durationT1+jT0/PT1+(j-1)T0If the value of (1) is greater than the first difference threshold value, determining that the gas in the inflated workpiece cavity is not in a stable state, making T1 be T1+ jT0, and performing the calculation again to obtain PT1+T0/PT0The value of (c). Wherein n and j are integers greater than 1.
Optionally, in this application, the historical time refers to a previous collection time of the first pressure value. Of course, the previous n collection times of the collection time of the first pressure value may also be used, where n is an integer greater than 1, and the setting manner of the historical time is not limited in this embodiment.
And step 205, when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after the test time is long.
The value of the test duration is pre-stored in the air tightness detection device.
And step 206, determining whether the air tightness of the workpiece to be tested is normal or not based on the difference value between the third pressure value and the steady-state pressure value.
The steady state pressure value is a pressure value corresponding to the moment when the gas in the inflated workpiece cavity is determined to be in the steady state.
Optionally, the ways of determining whether the airtightness of the tested workpiece is normal include, but are not limited to, the following:
the first method comprises the following steps: after the gas in the inflated workpiece cavity is in a stable state, if the absolute value of the difference value between the third pressure value and the stable state pressure value is smaller than a second difference value threshold value, determining that the air tightness of the workpiece to be measured is normal; and if the absolute value of the difference value between the third pressure value and the steady-state pressure value is greater than or equal to the second difference threshold value, determining that the air tightness of the detected workpiece is abnormal (for example, air leakage exists).
And the second method comprises the following steps: after the stable state, if the ratio of the third pressure value to the stable state pressure value is greater than a second ratio threshold value, determining that the air tightness of the workpiece to be tested is normal; and if the ratio of the third pressure value to the steady-state pressure value is less than or equal to the second ratio threshold value, determining that the air tightness of the workpiece to be tested is abnormal.
Alternatively, the second difference threshold and the second ratio threshold are determined based on user experience, and are preset in the airtightness detection apparatus by a user.
In order to more clearly describe the above-described airtightness detection method, the method will be described below as an example. Referring to fig. 3, the airtightness detection process includes the following steps:
1. at t0Controlling an inflation assembly to inflate the cavity of the workpiece to be tested at any time;
2. when the pressure value of the cavity of the workpiece to be measured reaches the preset pressure value PcWhen the air is inflated, the air inflation assembly is controlled to stop inflating;
3. acquiring the cavity of the inflated workpiece to be measured at t1The first pressure value at the moment is Pt1；
4. If the air tightness detection device acquires the pressure value every 0.1 second, the time t is reached after 0.1s1+0.1, corresponding to a first pressure value Pt1+0.1The second pressure value is Pt1Calculate Pt1+0.1-Pt1(ii) a If Pt1+0.1-Pt1Is less than the resolution P of the pressure acquisition assemblyRThen continue to calculate t1P corresponding to +0.2 timet1+0.2-Pt1+0.1(ii) a The above steps are repeated until the absolute value of the difference between the first pressure value and the second pressure value is less than PRHas a duration of t2Determining that the gas in the inflated workpiece cavity is in a stable state; if the difference between the first pressure value and the second pressure value corresponding to one moment is greater than or equal to PRThen, the time is taken as t1At that time, the above-described process is performed again.
5. At t2Constantly determining that the gas in the inflated workpiece cavity is in a stable state, wherein the corresponding stable state pressure value is PSAfter a long test time (t)3Moment), obtaining a third pressure value of the cavity of the workpiece to be detectedPM(ii) a If PM-PSIs less than a second difference threshold PsepcDetermining that the air tightness of the workpiece to be detected is normal; if PM-POf SThe absolute value is greater than or equal to a second difference threshold value PsepcAnd determining that the air tightness of the workpiece to be tested is abnormal.
And after the air tightness detection result of the detected workpiece is obtained, the air tightness detection device controls the inflation assembly to exhaust the detected workpiece. Namely, the inflation valve of the inflation assembly is controlled to be closed and the exhaust valve is controlled to be opened. Such as: referring to fig. 3, the airtightness detection apparatus controls the inflation assembly at t3And exhausting the tested workpiece after the moment.
In summary, in the air tightness detection method provided by this embodiment, the inflation assembly is controlled to inflate the cavity of the workpiece to be detected; when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, controlling the inflation assembly to stop inflating; acquiring a first pressure value of the inflated workpiece cavity at the current moment; determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at the historical moment; when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after the test time is long; determining whether the air tightness of the workpiece to be detected is normal or not based on the difference value between the third pressure value and the steady-state pressure value; the problems of complicated air tightness detection process and low detection efficiency in the prior art can be solved; whether the gas in the cavity of the workpiece to be detected reaches a stable state can be determined without slow exhaust, so that the detection efficiency can be improved.
Fig. 4 is a block diagram of a airtightness detection apparatus according to an embodiment of the present application, and this embodiment is described by taking as an example that the apparatus is applied to the airtightness detection apparatus 110 in the airtightness detection system shown in fig. 1. The device at least comprises the following modules: the system comprises a first inflation control module 401, a second inflation control module 402, a first pressure value acquisition module 403, a stable state determination module 404, a second pressure value acquisition module 405 and an airtightness condition determination module 406.
The first inflation control module 401 is used for controlling the inflation assembly to inflate the cavity of the workpiece to be tested;
the second inflation control module 402 is used for controlling the inflation assembly to stop inflating when the pressure value of the cavity of the workpiece to be tested reaches a preset pressure value;
a first pressure value obtaining module 403, configured to obtain a first pressure value of the inflated workpiece cavity at the current time;
a steady state determination module 404, configured to determine whether the gas in the inflated measured workpiece cavity is in a steady state based on a difference value between the first pressure value and a second pressure value at a historical time;
the second pressure value obtaining module 405 obtains a third pressure value of the cavity of the workpiece to be tested after the testing time is long when the gas in the inflated cavity of the workpiece to be tested is in a stable state;
and the air tightness condition determining module 406 determines whether the air tightness of the measured workpiece is normal or not based on a difference value between the third pressure value and a steady state pressure value, where the steady state pressure value is a pressure value corresponding to a moment when the gas in the inflated measured workpiece cavity is determined to be in a steady state.
For relevant details reference is made to the above-described method embodiments.
It should be noted that: in the air tightness detection device provided in the above embodiment, when performing air tightness detection, only the division of the above functional modules is illustrated, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the air tightness detection device is divided into different functional modules to complete all or part of the above described functions. In addition, the embodiments of the air tightness detection device and the air tightness detection method provided by the embodiments belong to the same concept, and specific implementation processes thereof are detailed in the embodiments of the methods and are not described herein again.
Fig. 5 is a block diagram of a airtightness detection apparatus according to an embodiment of the present application, where the apparatus may be an apparatus including the control component 110 in the airtightness detection apparatus 100 shown in fig. 1, such as: a smartphone, a tablet, a laptop, a desktop, or a server. The airtightness detection apparatus may also be referred to as a user equipment, a portable terminal, a laptop terminal, a desktop terminal, a control terminal, etc., and this embodiment is not limited thereto. The apparatus comprises at least a processor 501 and a memory 502.
Processor 501 may include one or more processing cores such as: 4 core processors, 8 core processors, etc. The processor 501 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 501 may also include a main processor and a coprocessor, where the main processor is a processor for processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 501 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, processor 501 may also include an AI (Artificial Intelligence) processor for processing computational operations related to machine learning.
Memory 502 may include one or more computer-readable storage media, which may be non-transitory. Memory 502 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, a non-transitory computer readable storage medium in memory 502 is used to store at least one instruction for execution by processor 501 to implement the hermeticity detection method provided by method embodiments herein.
In some embodiments, the air tightness detecting device may further include: a peripheral interface and at least one peripheral. The processor 501, memory 502 and peripheral interfaces may be connected by buses or signal lines. Each peripheral may be connected to the peripheral interface via a bus, signal line, or circuit board. Illustratively, peripheral devices include, but are not limited to: radio frequency circuit, touch display screen, audio circuit, power supply, etc.
Of course, the air tightness detecting device may also include fewer or more components, which is not limited in this embodiment.
Optionally, the present application further provides a computer-readable storage medium, in which a program is stored, and the program is loaded and executed by a processor to implement the air tightness detection method of the above method embodiment.
Optionally, the present application further provides a computer product, which includes a computer-readable storage medium, in which a program is stored, and the program is loaded and executed by a processor to implement the air tightness detection method of the above-mentioned method embodiment.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for detecting hermeticity, the method comprising:
controlling the inflation assembly to inflate the cavity of the workpiece to be tested;
when the pressure value of the cavity of the workpiece to be detected reaches a preset pressure value, controlling the inflation assembly to stop inflating;
acquiring a first pressure value of the inflated workpiece cavity at the current moment;
determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at a historical moment;
when the gas in the inflated workpiece cavity is in a stable state, acquiring a third pressure value of the workpiece cavity after testing;
and determining whether the air tightness of the measured workpiece is normal or not based on a difference value between the third pressure value and a steady-state pressure value, wherein the steady-state pressure value is a pressure value corresponding to the moment when the gas in the inflated measured workpiece cavity is determined to be in a steady state.
2. The method of claim 1, wherein the determining whether the gas within the inflated workpiece cavity under test is in a steady state comprises:
after the inflation is stopped, if the duration that the absolute value of the difference between the first pressure value and the second pressure value at the historical moment is smaller than the first difference threshold reaches a preset duration, determining that the gas in the inflated workpiece cavity is in a stable state.
3. The method of claim 1, wherein the determining whether the gas within the inflated workpiece cavity under test is in a steady state comprises:
after the inflation is stopped, if the duration that the ratio of the first pressure value to the second pressure value at the historical moment is greater than the first ratio threshold reaches a preset duration, determining that the gas in the inflated workpiece cavity is in a stable state.
4. The method of claim 2, wherein the first difference threshold is determined based on a resolution of a pressure acquisition assembly used to acquire a pressure value within the workpiece cavity under test.
5. The method of any of claims 1 to 4, wherein the historical time is a time of acquisition immediately preceding a time of acquisition of the first force value.
6. The method of claim 1, wherein the determining whether the hermeticity of the workpiece under test is normal comprises:
if the absolute value of the difference between the third pressure value and the steady state pressure value is smaller than a second difference threshold value, determining that the air tightness of the workpiece to be tested is normal;
and if the absolute value of the difference value between the third pressure value and the steady-state pressure value is greater than or equal to a second difference value threshold value, determining that the air tightness of the detected workpiece is abnormal.
7. The method of claim 1, wherein the determining whether the hermeticity of the workpiece under test is normal comprises:
if the ratio of the third pressure value to the steady-state pressure value is larger than a second ratio threshold value, determining that the air tightness of the workpiece to be tested is normal;
and if the ratio of the third pressure value to the steady-state pressure value is smaller than or equal to a second ratio threshold value, determining that the air tightness of the detected workpiece is abnormal.
8. An air-tightness detection device, characterized in that it comprises:
the first inflation control module is used for controlling the inflation assembly to inflate the cavity of the workpiece to be tested;
the second inflation control module is used for controlling the inflation assembly to stop inflating when the pressure value of the cavity of the workpiece to be tested reaches a preset pressure value;
the first pressure value acquisition module is used for acquiring a first pressure value of the inflated workpiece cavity at the current moment;
the stable state determination module is used for determining whether the gas in the inflated workpiece cavity is in a stable state or not based on a difference value between the first pressure value and a second pressure value at a historical moment;
the second pressure value acquisition module is used for acquiring a third pressure value of the cavity of the workpiece to be tested after the testing time is long when the gas in the inflated cavity of the workpiece to be tested is in a stable state;
and the gas tightness condition determining module is used for determining whether the gas tightness of the measured workpiece is normal or not based on a difference value between the third pressure value and a steady state pressure value, wherein the steady state pressure value is a pressure value corresponding to the moment when the gas in the inflated measured workpiece cavity is determined to be in a steady state.
9. An air tightness detection device is characterized by comprising a processor and a memory; stored in the memory is a program that is loaded and executed by the processor to implement the tightness detection method according to any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that the storage medium has stored therein a program for implementing the airtightness detection method according to any one of claims 1 to 7 when the program is executed by the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342716.5A CN111366314A (en) | 2020-04-27 | 2020-04-27 | Airtightness detection method and device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010342716.5A CN111366314A (en) | 2020-04-27 | 2020-04-27 | Airtightness detection method and device and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111366314A true CN111366314A (en) | 2020-07-03 |
Family
ID=71211022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010342716.5A Pending CN111366314A (en) | 2020-04-27 | 2020-04-27 | Airtightness detection method and device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111366314A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924106A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Online monitoring method, device and system for SF6 gas insulation equipment of transformer substation and storage medium |
| CN113295394A (en) * | 2021-05-21 | 2021-08-24 | 上海三一重机股份有限公司 | Gas pressure circulation testing method and device |
| CN113607351A (en) * | 2021-07-07 | 2021-11-05 | 广东电网有限责任公司广州供电局 | Cable tightness testing device, method, computer equipment and storage medium |
| CN113624425A (en) * | 2021-07-26 | 2021-11-09 | 上腾科技(广州)有限公司 | Battery pack sealing performance test inflation method, device and system and storage medium |
| CN114993580A (en) * | 2022-08-01 | 2022-09-02 | 深圳赛桥生物创新技术有限公司 | Consumable installation detection method, device and system and storage medium |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768695A (en) * | 2016-11-29 | 2017-05-31 | 维沃移动通信有限公司 | A kind of air-tightness detection method and mobile terminal |
| CN108167172A (en) * | 2017-12-20 | 2018-06-15 | 广州视源电子科技股份有限公司 | Test method, device, equipment, system and the storage medium of air pump |
| US20180188132A1 (en) * | 2016-12-30 | 2018-07-05 | Chroma Ate Inc. | Method and device for testing air tightness |
| CN110131024A (en) * | 2019-07-12 | 2019-08-16 | 潍柴动力股份有限公司 | A kind of leakage detection method and device of urea |
| CN110273786A (en) * | 2019-06-30 | 2019-09-24 | 潍柴动力股份有限公司 | A kind of detection method of gas pipeline leakage, device and engine system |
| CN110500735A (en) * | 2019-07-17 | 2019-11-26 | 视联动力信息技术股份有限公司 | Refrigerant pressure control method, device, equipment and the air-conditioning of the apparatus of air conditioning |
| CN110646151A (en) * | 2019-10-12 | 2020-01-03 | 广州达意隆包装机械股份有限公司 | Method, device, equipment, system and storage medium for leakage detection |
-
2020
- 2020-04-27 CN CN202010342716.5A patent/CN111366314A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768695A (en) * | 2016-11-29 | 2017-05-31 | 维沃移动通信有限公司 | A kind of air-tightness detection method and mobile terminal |
| US20180188132A1 (en) * | 2016-12-30 | 2018-07-05 | Chroma Ate Inc. | Method and device for testing air tightness |
| CN108167172A (en) * | 2017-12-20 | 2018-06-15 | 广州视源电子科技股份有限公司 | Test method, device, equipment, system and the storage medium of air pump |
| CN110273786A (en) * | 2019-06-30 | 2019-09-24 | 潍柴动力股份有限公司 | A kind of detection method of gas pipeline leakage, device and engine system |
| CN110131024A (en) * | 2019-07-12 | 2019-08-16 | 潍柴动力股份有限公司 | A kind of leakage detection method and device of urea |
| CN110500735A (en) * | 2019-07-17 | 2019-11-26 | 视联动力信息技术股份有限公司 | Refrigerant pressure control method, device, equipment and the air-conditioning of the apparatus of air conditioning |
| CN110646151A (en) * | 2019-10-12 | 2020-01-03 | 广州达意隆包装机械股份有限公司 | Method, device, equipment, system and storage medium for leakage detection |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112924106A (en) * | 2021-01-29 | 2021-06-08 | 广东电网有限责任公司 | Online monitoring method, device and system for SF6 gas insulation equipment of transformer substation and storage medium |
| CN113295394A (en) * | 2021-05-21 | 2021-08-24 | 上海三一重机股份有限公司 | Gas pressure circulation testing method and device |
| CN113295394B (en) * | 2021-05-21 | 2023-10-31 | 上海三一重机股份有限公司 | Gas pressure circulation test method and device |
| CN113607351A (en) * | 2021-07-07 | 2021-11-05 | 广东电网有限责任公司广州供电局 | Cable tightness testing device, method, computer equipment and storage medium |
| CN113624425A (en) * | 2021-07-26 | 2021-11-09 | 上腾科技(广州)有限公司 | Battery pack sealing performance test inflation method, device and system and storage medium |
| CN114993580A (en) * | 2022-08-01 | 2022-09-02 | 深圳赛桥生物创新技术有限公司 | Consumable installation detection method, device and system and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111366314A (en) | Airtightness detection method and device and storage medium | |
| US20220043067A1 (en) | Charging method and device, charging system, electronic equipment and storage medium | |
| CN107589928A (en) | Double screen displaying method of terminal, device, terminal and computer-readable recording medium | |
| CN111211937B (en) | Method, device and system for testing stability of server link signals | |
| CN111239617B (en) | Control method and device for charge and discharge test, storage medium and system | |
| CN103176091A (en) | System and method for electric leakage detection of electronic device | |
| CN112087354A (en) | Communication protocol testing method and device, electronic equipment and storage medium | |
| US10919400B2 (en) | Systems for validating a formula for dispensing hydrogen and methods thereof | |
| CN113778055A (en) | TBOX detection method and detection system | |
| CN103902396B (en) | A kind of information processing method and electronic equipment | |
| CN104569673B (en) | Test circuit, method and apparatus | |
| CN113326191B (en) | Consumption flow test method, device and storage medium | |
| CN111521349B (en) | Inflation and deflation control method, device and system, electronic equipment and medium | |
| CN106646085B (en) | Leakage tests method, apparatus and equipment | |
| KR102313587B1 (en) | Sealing performance inspection method, apparatus and storage medium | |
| CN114263596B (en) | Diaphragm rupture determining method and device of diaphragm compressor and electronic equipment | |
| CN103885697A (en) | Page operating system and method | |
| CN105893203A (en) | CEC verification method and device | |
| WO2022166830A1 (en) | Feature extraction method and apparatus for text classification | |
| CN107152992A (en) | The package seal checker and hermetization testing method of electronic installation | |
| WO2023109002A1 (en) | Gas safety detection system and method for lithium battery rotary kiln, and medium | |
| CN115185313A (en) | Trend tracking early warning method and device for bearing bush temperature of hydroelectric generating set | |
| CN107390077A (en) | Method of testing, test device and computer-readable recording medium | |
| KR101265535B1 (en) | Monitoring apparatus and method thereof | |
| KR101864778B1 (en) | Method for testing sensor of portable communication terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200703 |