Air tightness detection method for open square cabin

Abstract

The invention discloses an air tightness detection method for an open square cabin, and the method comprises the steps: plugging the open square cabin, and reserving an air inlet and a measurement port; connecting air tightness detection equipment with the air inlet through an air inlet pipeline so as to supply air to the open square cabin; in the process of supplying air to the open square cabin through the air inlet pipeline, the air tightness detection equipment monitors the air pressure in the open square cabin; after the air pressure is stabilized at the preset pressure, the air speed in the air inlet pipeline is measured at a preset time interval; and judging whether the air tightness of the open square cabin is qualified or not according to the wind speed and the sectional area of the air inlet pipeline. According to the method, by actively blocking and reserving a specific air opening and artificially constructing a detectable closed space, the core problem that an open square cabin structure is difficult to seal and leak hunting is solved in a targeted manner, and airtightness detection has an implementation basis.

Description

Technical Field

[0001] This invention relates to the technical field of power plant modular enclosures, and more specifically, to a method for testing the airtightness of an open modular enclosure. Background Technology

[0002] Existing conventional airtightness testing methods are mainly for ordinary large-panel modular units, and these units are all closed units; airtightness testing has not been conducted on open-type modular units. Open-type modular units need to be used in conjunction with other equipment, and it is necessary to ensure that a seal is formed between the unit and the contact surfaces after placement. Therefore, airtightness testing is required beforehand to ensure the sealing capability of the sealing structure at the sealing points of the open-type modular unit. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention innovatively provides a method for testing the airtightness of open-type modular shelters, thereby solving the problem that existing methods for testing the airtightness of modular shelters cannot perform airtightness testing on open-type modular shelters.

[0004] To achieve the above-mentioned technical objectives, this invention discloses a method for testing the airtightness of an open-type modular shelter, the method comprising: The open-type modular shelter was sealed off, with air inlets and measurement ports left open. The air tightness testing equipment is connected to the air inlet through an air inlet pipe to supply air to the open container; During the process of supplying air to the open-type modular cabin by the air tightness testing equipment, the air pressure inside the open-type modular cabin is monitored; After the air pressure stabilizes at the preset pressure, the wind speed in the air intake pipe is measured at preset time intervals. Based on the wind speed and the cross-sectional area of ​​the air intake pipe, determine whether the airtightness of the open-type cabin is up to standard.

[0005] Optionally, the reserved air inlet and measuring port include: The air inlet and the measuring port are reserved on the two side plates opposite each other along the length of the open container; Alternatively, the air inlet can be reserved on the sealing fixture at the open position of the open container, and the measuring port can be set at a preset position in the open container away from the open position.

[0006] Optionally, the method further includes: An anemometer is installed at the air inlet to measure the wind speed inside the air intake duct; A micromanometer is installed at the measuring port to monitor the air pressure inside the open-type cabin.

[0007] Optionally, determining whether the airtightness of the open-type container is qualified based on the wind speed and the cross-sectional area of ​​the air intake pipe includes: Calculate the gas leakage of the open-type cabin based on the wind speed and the cross-sectional area of ​​the air intake pipe. The gas leakage amount is compared with a preset leakage value: if the gas leakage amount does not exceed the preset leakage value, the airtightness of the open container is deemed qualified; otherwise, it is deemed unqualified.

[0008] Optionally, after the air pressure stabilizes at a preset pressure, measuring the wind speed in the air intake pipe at preset time intervals includes: After the air pressure stabilizes at the first pressure, the wind speed in the air intake pipe is measured at a first time interval.

[0009] Optionally, when measuring the wind speed within multiple sets of the air intake ducts at a first time interval, the calculation of the gas leakage of the open-type cabin includes: Based on the wind speed measured in the multiple sets of the air intake pipes at the first time interval, the gas leakage of the multiple sets of the open cabins corresponding to the wind speed in the multiple sets of the air intake pipes is calculated. Based on the gas leakage rates of multiple sets of the open-type cabins, the first average gas leakage rate of the multiple sets of the open-type cabins is calculated.

[0010] Optionally, after the air pressure stabilizes at a preset pressure, measuring the wind speed in the air intake pipe at preset time intervals further includes: After the air pressure stabilizes at the second pressure, the wind speed in the air intake pipes is measured at a second time interval or the first time interval.

[0011] Optionally, when measuring the wind speed within multiple sets of the air intake ducts at a second time interval, the calculation of the gas leakage of the open-type cabin includes: Based on the wind speed measured in the multiple sets of the air intake pipes at the second time interval, the gas leakage of the multiple sets of the open cabins corresponding to the wind speed in the multiple sets of the air intake pipes is calculated. Based on the gas leakage rates of multiple sets of the open-type cabins, a second average gas leakage rate of the multiple sets of the open-type cabins is calculated.

[0012] Optionally, comparing the gas leakage amount with a preset leakage value includes: The first average gas leakage rate is compared with the first preset leakage value, and the second average gas leakage rate is compared with the second preset leakage value: If the first average gas leakage does not exceed the first preset leakage value and the second average gas leakage does not exceed the second preset leakage value, then the airtightness of the open container is deemed qualified; otherwise, it is deemed unqualified.

[0013] Optionally, sealing off the open-type modular shelter includes: Seal the openings on the open-type modular shelter; A sealing device is added to the open position of the open container, and a hollow sealing strip is used to seal the joint between the open container and the sealing device.

[0014] The beneficial effects of this invention are as follows: This invention provides a method for airtightness testing of open-type modular shelters. This method artificially constructs a detectable closed space by actively sealing and reserving specific air vents, which specifically solves the core problems of "difficult to seal and difficult to detect leaks" in open-type modular shelter structures, making airtightness testing feasible. Attached Figure Description

[0015] Figure 1 A flowchart illustrating the airtightness testing method for an open-type modular shelter according to an embodiment of the present invention is shown; Figure 2 This diagram illustrates the separation state of the open-type modular container and the sealing equipment according to an embodiment of the present invention. Figure 3 A cross-sectional view showing the open-type modular shelter and sealing equipment in conjunction with an embodiment of the present invention.

[0016] In the diagram: 10, Open container; 10A, Open position; 20, Sealing fixture; 201, Sealing disc; 201A, Air inlet; 201B, Measuring port; 202, Mounting bracket; 30, Air inlet pipe; 301, Flow channel plate; 40, Hollow sealing strip; 501, Anemometer; 502, Micromanometer. Detailed Implementation

[0017] The following is a detailed explanation and description of the airtightness testing method for an open-type container provided by the present invention, with reference to the accompanying drawings.

[0018] like Figures 1-2 As shown, the present invention provides a method for testing the airtightness of an open-type shelter 10, the method comprising: S101. Seal off the open container 10 and leave out the air inlet 201A and the measurement port 201B; S102. Connect the air tightness testing equipment to the air inlet 201A through the air inlet pipe 30 to supply air to the open container 10. S103. During the process of supplying air to the open container 10 by the air tightness testing equipment, monitor the air pressure inside the open container 10. S104. After the air pressure stabilizes at the preset pressure, measure the wind speed in the air intake pipe 30 at preset time intervals. S105. Based on the wind speed and the cross-sectional area of ​​the air intake pipe 30, determine whether the airtightness of the open-type container 10 is up to standard.

[0019] In this embodiment, considering that the open-type modular shelter 10 has no completely enclosed outer shell, traditional sealing detection methods are difficult to apply. This method actively seals and reserves specific air vents to artificially construct a detectable enclosed space, specifically addressing the core problems of "difficult to seal and difficult to detect leaks" in open structures, thus providing a basis for airtightness testing.

[0020] Based on the judgment logic of "wind speed after air pressure stabilization + duct cross-sectional area", the core relationship between cabin leakage and supplementary air volume is directly linked. Wind speed is measured only after the preset pressure has stabilized, avoiding interference from air pressure fluctuations. The detection parameters are intuitive and quantifiable, significantly improving the accuracy and consistency of airtightness assessment compared to subjective judgment or indirect detection.

[0021] Furthermore, this testing process requires only four core steps: sealing, connecting equipment, monitoring air pressure, and measuring wind speed, eliminating the need for complex tooling or prolonged static waiting. The preset time interval measurement design balances accuracy and efficiency, enabling rapid testing of a single modular container and adapting to the rapid production and deployment scenarios of open modular containers. It eliminates the need for high-precision, high-cost dedicated sealing testing instruments; the core testing can be achieved using air pressure monitoring and wind speed measurement equipment. The testing process does not damage the container structure, and the sealing measures can be flexibly disassembled without affecting the subsequent use of the container, balancing testing effectiveness and operating costs, making it easy to promote and apply in actual production and acceptance stages.

[0022] In some optional implementations, reserving the air inlet 201A and the measuring port 201B includes reserving the air inlet 201A and the measuring port 201B on opposite side plates along the length of the open cabin 10. In this embodiment, by separately positioning the air inlet 201A and the measuring port 201B on opposite side plates along the length of the cabin, a straight convective airflow along the length direction can be formed inside the cabin. This airflow path has no obvious detours or dead ends, allowing the air pressure inside the cabin to be quickly and evenly distributed, avoiding wind speed measurement deviations caused by local air pressure imbalances, and further improving the accuracy of airtightness determination.

[0023] Furthermore, the straight-line convection airflow pattern can reduce the generation of vortices within the cabin, avoiding interference from vortices in wind speed measurements. Especially during the wind speed monitoring phase after air pressure has stabilized, a stable airflow state ensures greater consistency in wind speed data for each measurement, reduces random errors, and makes the estimation of leakage more reliable.

[0024] In some alternative implementations, the method also includes: An anemometer 501 is installed at the air inlet 201A, such as Figure 3 As shown, the wind speed inside the air intake duct 30 is measured; A micromanometer 502 is installed at measuring port 201B, such as Figure 3 As shown, the air pressure inside the open-type modular cabin 10 is monitored.

[0025] In this embodiment, when conducting an airtightness test on the open-type cabin 10, its open position 10A is first sealed. Then, an anemometer 501 probe is installed on the air intake pipe 30 connected to the air inlet 201A, and a micromanometer 502 probe is installed at the appropriate position of the open-type cabin 10. When the air intake pipe 30 supplies air into the cabin, the micromanometer 502 on the cabin can accurately collect the required pressure data. After the displayed pressure value stabilizes, it is maintained in this state. Combined with the wind speed data fed back by the anemometer 501 in the air intake pipe 30, the airtightness test of the open-type cabin 10 can be completed.

[0026] Optionally, the air inlet 201A can be located on the side panel / top panel of the open container 10, or it can be located on the sealing fixture 20 installed at the open position 10A of the open container 10 (i.e., the air inlet 201A is reserved on the sealing disc 201 of the sealing fixture 20). When the air inlet 201A is reserved on the sealing fixture 20 at the open position 10A of the open container 10, a measuring port 201B can be opened at a preset position away from the open position 10A of the open container 10. In this case, the side panel where the measuring port 201B is opened can be in a non-directly corresponding positional relationship with the sealing fixture 20 on which the air inlet 201A is configured.

[0027] Alternatively, a flow channel plate 301 is provided inside the intake duct 30. The flow channel plate 301 is horizontally placed inside the intake duct 30 and has ventilation holes evenly distributed on it. The flow channel plate 301 can make the airflow in the intake duct 30 evenly distributed, stabilize the pressure and reduce noise, and also play a certain role in rectification.

[0028] In some alternative implementations, the airtightness of the open-type container 10 is determined based on the wind speed and the cross-sectional area of ​​the air intake duct 30, including: Calculate the gas leakage of the open-type container 10 based on the wind speed and the cross-sectional area of ​​the air intake pipe 30. The gas leakage amount is compared with the preset leakage value: if the gas leakage amount does not exceed the preset leakage value, the airtightness of the open container 10 is judged to be qualified; otherwise, it is judged to be unqualified.

[0029] In this embodiment, based on the balance relationship of "supplementary air volume = leakage air volume", the leakage amount is calculated through quantifiable parameters to achieve airtightness determination. The determination logic is quantified, and the result is objective and accurate. Specifically: After the open container 10 is sealed, it forms a relatively closed space. When the air pressure inside the container stabilizes at a preset value, the amount of gas leaking from the container and the amount of gas supplemented by the air intake pipe 30 are in dynamic equilibrium. The core calculation formula for gas flow rate is "flow rate = wind speed × pipe cross-sectional area". The wind speed in the air intake pipe 30 can be directly measured by the anemometer 501. The pipe cross-sectional area is a known fixed parameter. Based on this, the supplementary air volume per unit time (i.e., the amount of gas leakage from the container) can be accurately calculated. The calculation process is simple and the detection efficiency is high.

[0030] It should be noted that the preset leakage value can refer to the corresponding indicators in the airtightness test chapter of GJB 2093-2012 (National Military Standard), which are divided into three levels: I, II, and III. The preset leakage value is a qualified threshold determined in combination with the usage scenario and sealing standards of the open container 10. By comparing the actual calculated leakage amount with this threshold, it can be determined whether the airtightness meets the standard.

[0031] In some optional implementations, after the air pressure stabilizes at a preset pressure, the wind speed within the intake duct 30 is measured at preset time intervals, including: After the air pressure stabilizes at the first pressure, the wind speed in multiple sets of air intake pipes 30 is measured at the first time interval.

[0032] In this embodiment, considering that a single wind speed measurement may be affected by factors such as instantaneous airflow fluctuations and minor equipment interference, resulting in random errors, multiple sets of measurements can offset such random deviations by superimposing the data, making the final average wind speed (or valid data) closer to the true value and reducing misjudgments of airtightness caused by deviations in a single data measurement.

[0033] Furthermore, calculations based on multiple sets of data (such as averaging) can standardize the judgment criteria for different testing scenarios and operators, reducing discrepancies caused by human factors and making airtightness testing more standardized. Multiple sets of data can also intuitively reflect the airflow state after air pressure stabilizes: if the fluctuation range of multiple sets of wind speed data is small, it indicates that the air pressure and airflow inside the chamber have reached a stable equilibrium, and the testing environment is reliable; if the data fluctuation is too large, it can promptly detect problems such as air pressure not being truly stable or abnormal equipment connections, avoiding the use of unstable data for judgment.

[0034] Optionally, when measuring the wind speed within multiple sets of air intake ducts 30 at a first time interval, the calculation of the gas leakage in the open-type cabin 10 includes: Based on the wind speed measured in multiple sets of air intake pipes 30 at a first time interval, the gas leakage of multiple sets of open cabins 10 corresponding to the wind speed in multiple sets of air intake pipes 30 is calculated. Based on the gas leakage of multiple open-type shelters 10, the first average gas leakage of multiple open-type shelters 10 is calculated.

[0035] In this embodiment, multiple sets of leakage amounts are obtained based on the collection of multiple sets of wind speed data. Then, by calculating the first average gas leakage amount, the deviation caused by accidental factors such as airflow fluctuations and minor equipment interference in a single measurement can be effectively offset. Compared with the leakage amount calculated from a single set of data, the average leakage amount is closer to the actual leakage situation of the cabin, significantly reducing the impact of data errors on the judgment result.

[0036] Furthermore, if the fluctuations in multiple sets of leakage data are within a reasonable range, the calculated average leakage rate is valid; if the data fluctuations are too large, it can be used to infer problems in the testing environment (such as unstable air pressure or temporary abnormalities in the seal), facilitating timely troubleshooting and adjustments. This calculation method effectively avoids using invalid data for judgment, ensuring the rigor of the testing process. Further optionally, after the air pressure stabilizes at a preset pressure, the wind speed inside the air intake pipe 30 is measured at a preset time interval, which further includes: after the air pressure stabilizes at a second pressure, the wind speed inside multiple sets of air intake pipes 30 is measured at a second time interval or a first time interval.

[0037] In this embodiment, considering that the open-type shelter 10 may face different air pressure environments in actual applications (such as changes in outdoor wind pressure and pressure fluctuations caused by the operation of equipment inside the shelter), by collecting data under two different preset pressures, namely the first pressure and the second pressure, the sealing state of the shelter under multiple working conditions can be simulated, avoiding the limitations of the test results under a single pressure, and making the airtightness determination more in line with actual use needs.

[0038] Furthermore, by collecting multiple sets of wind speed data and calculating the average leakage rate at each pressure, random errors under a single pressure can be offset. On the other hand, cross-validation of multiple sets of data under different pressures can eliminate systematic biases that may exist under a single pressure (such as temporary fit deviations of seals under specific pressures). This dual-dimensional data analysis allows the final leakage rate assessment to more closely approximate the actual sealing level of the cabin. Simultaneously, the multi-pressure detection mode can adapt to diverse sealing standards, meeting the needs of different scenarios without adjusting the detection logic, thus improving the technology's versatility and applicability.

[0039] Similar to the above method of "calculating the gas leakage of the open-type cabin 10 when measuring the wind speed in multiple sets of air intake pipes 30 at a first time interval", calculating the gas leakage of the open-type cabin 10 when measuring the wind speed in multiple sets of air intake pipes 30 at a second time interval includes: Based on the wind speed measured in multiple sets of air intake pipes 30 at a second time interval, the gas leakage of multiple sets of open cabins 10 corresponding to the wind speed in multiple sets of air intake pipes 30 is calculated. Based on the gas leakage of multiple open-type shelters 10, the second average gas leakage of multiple open-type shelters 10 is calculated.

[0040] Optionally, considering that the pressure standard in GJB is the air leakage value of three levels (I, II, and III) at 300Pa, the open-type cabin 10 is based on this standard. Since the final air pressure value inside the open-type cabin 10 may not reach 300Pa due to structural reasons, the first pressure value of the open-type cabin 10 can be set at 100Pa, the second pressure value at 200Pa, and if both are met, a third pressure value, a fourth pressure value, etc. can be set for comparison, until the pressure is increased to the maximum pressure value, which shall not exceed 300Pa.

[0041] Furthermore, both the first and second interval times can be set to 2 minutes, meaning the interval times can be the same. For example, the wind speed values ​​can be measured at three time points: 1 minute, 3 minutes, and 5 minutes after the pressure inside the open-type shelter 10 is stabilized.

[0042] In some alternative implementations, considering that the airtightness detection method uses wind speed data at two different pressures to calculate two sets of average gas leakage values, each corresponding to a different preset leakage value, the process of comparing the gas leakage amount with the preset leakage value has been optimized to improve accuracy. For example, comparing the gas leakage amount with the preset leakage value includes: The first average gas leakage rate is compared with the first preset leakage value, and the second average gas leakage rate is compared with the second preset leakage value: If the first average gas leakage does not exceed the first preset leakage value and the second average gas leakage does not exceed the second preset leakage value, then the airtightness of the open container 10 is deemed qualified; otherwise, it is deemed unqualified.

[0043] In some alternative implementations, sealing off the open-type modular shelter 10 includes: Seal the openings on the open-type modular shelter 10; A sealing fixture 20 is added at the open position 10A of the open container 10, and the mating point between the open container 10 and the sealing fixture 20 is sealed by a hollow sealing strip 40.

[0044] In this embodiment, sealing measures are taken for the openings and open area 10A (large open area) of the open container 10, forming a dual protection of "targeted sealing of the openings + tooling sealing of open area 10A". This avoids air leakage caused by the omission of small openings and solves the problem of sealing the large open area 10A, ensuring that the entire container is sealed without dead corners, and providing the basic conditions for airtightness testing.

[0045] In addition, the open position 10A forms a closed surface by adding a sealing fixture 20, which works in conjunction with the hollow sealing strip 40 to seal the mating area. The hollow sealing strip 40 has good elasticity and conformability, which can effectively fill the gap between the fixture and the cabin, enhancing the tightness of the seal; at the same time, the fixture structure can provide stable support, preventing the sealing part from deforming or falling off due to air pressure, and reducing the distortion of test data caused by seal failure.

[0046] The following example, using the collection of three sets of wind speed data under the first pressure, illustrates a method for detecting the airtightness of an open-type cabin 10 in the above embodiment.

[0047] The open-type modular shelter 10 mainly requires the installation of other equipment or cooperation with other components at the open position 10A to achieve a seal. This ensures that after the equipment is placed or installed, the overall seal of the open-type modular shelter 10 is achieved through compression sealing contact, thus requiring a dynamic sealing design. When the sealing device 20 contacts and compresses at the open position 10A, it needs to be able to adapt to a certain degree of sway at the open position 10A of the open-type modular shelter 10. Therefore, a flexible sealing device is installed at the contact point between the open-type modular shelter 10 and the sealing device 20, namely a hollow sealing strip 40 capable of large deformation. The hollow sealing strip 40 is designed with different heights according to the dynamic compression requirements at different positions, thus achieving a variable cross-section design. The sealing device 20 can be designed as a large plate pressing form or a welded frame form. During the airtightness test, due to airtightness requirements, the cabin plate can be designed as a pressed plate, and a mounting bracket 202 can be installed on the sealing device 20. By setting up the mounting bracket 202, it is convenient to install the sealing fixture 20 on the open container 10, and it can reinforce and stabilize the sealing fixture 20, so as to prevent the sealing fixture 20 from moving up, down, left, or right due to its own weight and other factors after it is assembled with the open container 10.

[0048] First, install the sealing fixture 20 to achieve a complete seal of the open-type container 10. Then, seal the openings on the container body, leaving two openings for air inlet and outlet. The specific airtightness test method is as follows: 1. Ensure the open-type modular shelter is in the closed position. Use the sealing tool 20 to seal the open position 10A of the open-type modular shelter 10. At the same time, check whether the sealing tool 20 and the open position 10A are completely and tightly sealed. 2. Fabricate the air inlet flange fixture and the measuring port flange fixture. On the air inlet fixture at air inlet 201A, make a flange opening for installing the air inlet pipe 30 and an opening for installing the anemometer 501 probe, ensuring that the anemometer 501 opening is located at the front end of the air inlet pipe 30; make an opening on the measuring port flange fixture at measuring port 201B to ensure that the micro pressure gauge 502 probe can be installed and fixed. 3. Install the air inlet flange fixture on the air inlet reserved on the open container 10 (or the air inlet 201A reserved on the sealing fixture 20), and install the measuring port flange fixture on one of the air outlets of the container (as measuring port 201B). The air inlet and air outlet are set at a distance between the front and rear of the container to ensure that the gas at the air inlet 201A can fill the space inside the container first after flowing in. 4. Seal the air inlet pipe 30 of the air tightness testing equipment to the flange of the air inlet flange fixture, and place and fix the anemometer 501 probe in the hole of the air inlet flange fixture, ensuring that it is at the front end of the air inlet pipe 30. 5. Connect the 502 micromanometer probe to the orifice of the measuring port flange tooling in a sealed manner to display the pressure value inside the cabin; 6. Open the air valve and supply air into the cabin through the air inlet pipe 30. Adjust the air tightness testing equipment and observe the pressure value displayed by the micromanometer 502. Start timing when the pressure value of the micromanometer 502 reaches the required stable value. 7. Keep the pressure value stable. The preset time interval can be set to 2 minutes. At this time, record the wind speed value displayed by the anemometer 501 at 30 points in the air intake pipe every 2 minutes, and record a total of 3 sets of data. 8. Calculate the air leakage rate for the three sets of recorded data using the formula Q=V×A, where: Q - air leakage rate, m³ / h; V - instantaneous wind speed at each moment, m / s; A - effective cross-sectional area of ​​the intake duct (30 mm), m². 2 ; 9. Calculate the air leakage of the open-type cabin 10 by taking the average value according to the following formula, thereby completing the airtightness test of the open-type cabin 10.

[0049] Q = (Q1 + Q2 + Q3) / 3 Where: Q - air leakage rate per hour, m³ / h; Q1 - first set of flow meter readings, m³ / h; Q2 - second set of flow meter readings, m³ / h; Q3 - third set of flow meter readings, m³ / h.

[0050] By adopting the above method, the airtightness test of the open container 10 can be effectively carried out, thereby effectively verifying the sealing performance of the open container 10.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] In the description of this specification, the references to terms such as "this embodiment," "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any at least one embodiment or example. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0055] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and simple improvements made on the substantive content of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for testing the airtightness of an open-type modular shelter, characterized in that, The method includes: The open-type modular shelter was sealed off, with air inlets and measurement ports left open. The air tightness testing equipment is connected to the air inlet through an air inlet pipe to supply air to the open container; During the process of supplying air to the open-type modular cabin through the air intake pipe, the air tightness detection equipment monitors the air pressure inside the open-type modular cabin. After the air pressure stabilizes at the preset pressure, the wind speed in the air intake pipe is measured at preset time intervals. Based on the wind speed and the cross-sectional area of ​​the air intake pipe, determine whether the airtightness of the open-type cabin is up to standard.

2. The airtightness testing method for an open-type modular shelter according to claim 1, characterized in that, The reserved air inlet and measuring port include: The air inlet and the measuring port are reserved on the two side plates opposite each other along the length of the open container; Alternatively, the air inlet can be reserved on the sealing fixture at the open position of the open container, and the measuring port can be set at a preset position in the open container away from the open position.

3. The airtightness testing method for an open-type modular shelter according to claim 1, characterized in that, The method further includes: An anemometer is installed at the air inlet to measure the wind speed inside the air intake duct; A micromanometer is installed at the measuring port to monitor the air pressure inside the open-type cabin.

4. The method for testing the airtightness of an open-type modular shelter according to any one of claims 1-3, characterized in that, The step of determining whether the airtightness of the open-type modular shelter is qualified based on the wind speed and the cross-sectional area of ​​the air intake pipe includes: Calculate the gas leakage of the open-type cabin based on the wind speed and the cross-sectional area of ​​the air intake pipe. The gas leakage amount is compared with a preset leakage value: if the gas leakage amount does not exceed the preset leakage value, the airtightness of the open container is deemed qualified; otherwise, it is deemed unqualified.

5. The airtightness testing method for an open-type modular shelter according to claim 4, characterized in that, After the air pressure stabilizes at a preset pressure, the air velocity in the intake pipe is measured at preset time intervals, including: After the air pressure stabilizes at the first pressure, the wind speed in the air intake pipe is measured at a first time interval.

6. The airtightness testing method for an open-type modular shelter according to claim 5, characterized in that, When measuring the wind speed within multiple sets of the air intake ducts at a first time interval, the calculation of the gas leakage of the open-type cabin includes: Based on the wind speed measured in the multiple sets of the air intake pipes at the first time interval, the gas leakage of the multiple sets of the open cabins corresponding to the wind speed in the multiple sets of the air intake pipes is calculated. Based on the gas leakage rates of multiple sets of the open-type cabins, the first average gas leakage rate of the multiple sets of the open-type cabins is calculated.

7. The airtightness testing method for an open-type modular shelter according to claim 6, characterized in that, After the air pressure stabilizes at a preset pressure, the air velocity in the intake pipe is measured at preset time intervals, which further includes: After the air pressure stabilizes at the second pressure, the wind speed in the air intake pipes is measured at a second time interval or the first time interval.

8. The airtightness testing method for an open-type modular shelter according to claim 7, characterized in that, When measuring the wind speed within multiple sets of the air intake ducts at a second time interval, the calculation of the gas leakage of the open-type cabin includes: Based on the wind speed measured in the multiple sets of the air intake pipes at the second time interval, the gas leakage of the multiple sets of the open cabins corresponding to the wind speed in the multiple sets of the air intake pipes is calculated. Based on the gas leakage rates of multiple sets of the open-type cabins, a second average gas leakage rate of the multiple sets of the open-type cabins is calculated.

9. The airtightness testing method for an open-type modular shelter according to claim 8, characterized in that, Comparing the gas leakage amount with a preset leakage value includes: The first average gas leakage rate is compared with the first preset leakage value, and the second average gas leakage rate is compared with the second preset leakage value: If the first average gas leakage does not exceed the first preset leakage value and the second average gas leakage does not exceed the second preset leakage value, then the airtightness of the open container is deemed qualified; otherwise, it is deemed unqualified.

10. The airtightness testing method for an open-type modular shelter according to claim 1, characterized in that, The sealing of the open-type modular shelter includes: Seal the openings on the open-type modular shelter; A sealing device is added to the open position of the open container, and a hollow sealing strip is used to seal the joint between the open container and the sealing device.

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