Sealing performance pressure test method based on artificial chamber test model

Abstract

The invention relates to the field of material testing, in particular to a sealing performance pressure testing method based on an artificial chamber test model, which comprises the following steps: S1, model detection; s2, model analysis; s3, pressure detection; s4, carrying out pressure maintaining test; s5, performing pressure reduction detection; s6, leakage detection; according to the method, the qualification degree of the artificial chamber test model is obtained according to the maximum compressive strength and the durability of the model material and the integrity degree of the artificial chamber test model and fed back, and the artificial chamber test model is evaluated according to the sealing performance, the pressure maintaining sealing performance, the deformation degree and the leakage degree evaluation coefficient of the artificial chamber test model. According to the method, the sealing performance evaluation index of the artificial chamber test model is obtained through analysis and fed back, the quality and performance of the artificial chamber test model can be comprehensively and systematically evaluated, the sealing effect of the artificial chamber in a specific environment is better guaranteed, and adverse effects caused by leakage and other problems are prevented.

Description

Technical Field

[0001] The invention relates to the field of material testing, and in particular to a sealing performance pressure testing method based on an artificial chamber test model. Background Art

[0002] In many engineering fields, the quality of sealing performance is crucial to the safe and stable operation of the system. As a special structure, the sealing performance of artificial chambers is directly related to the safety and reliability of related operations.

[0003] With the continuous development of various fields and the increasing innovation of technology, the requirements for sealing performance are becoming higher and higher. Although the traditional air pressure testing method has met the needs in the past to a certain extent, it has gradually exposed some limitations when facing today's complex and changeable working conditions and more stringent standards.

[0004] For example, the existing Chinese patent with publication number CN201210456206.6 discloses a method for verifying the sealing performance of a safety valve. This solution uses leakage percentage as a judgment index for the safety valve sealing test. By installing air pressure detection devices of different ranges at the air inlet of the safety valve, the air pressure values ​​before and after the test are obtained to calculate the air pressure drop λ, thereby judging whether the sealing performance is qualified. This method achieves accurate verification of the safety valve sealing performance by using specific air pressure detection and calculation methods, and realizes convenient operation and data display through corresponding devices and interfaces.

[0005] However, the above patent has the following problems: the solution mentions the pressure increase and pressure maintenance conditions, but does not analyze the pressure reduction process itself, which may lead to an incomplete understanding of the entire gas pressure change process and an inability to accurately assess possible problems that may arise during the pressure reduction process. It may also affect the accurate judgment of the overall performance and reliability of the safety valve, and fail to promptly discover some abnormal conditions that only appear during the pressure reduction stage. Summary of the invention

[0006] In order to overcome the shortcomings of the background technology, an embodiment of the present invention provides a sealing performance pressure testing method based on an artificial chamber test model, which can effectively solve the problems involved in the above-mentioned background technology.

[0007] The purpose of the present invention can be achieved through the following technical solutions: a sealing performance pressure testing method based on an artificial chamber test model, the method comprising the following steps: S1. Model detection: testing the quality parameters of the model material and the integrity of the artificial chamber test model, the quality parameters including maximum compressive strength and durability.

[0008] S2. Model analysis: The qualification of the artificial chamber test model is obtained based on the maximum compressive strength, durability and integrity of the model material. , and provide feedback.

[0009] S3. Air pressure detection: The actual air pressure of the artificial chamber test model at each time point is read by the pressure sensor, and the sealing performance of the artificial chamber test model is analyzed. .

[0010] S4. Pressure holding test: When the air pressure reaches the predetermined test pressure, it enters the pressure holding stage. The pressure sensor reads the air pressure at each test time point of the artificial chamber test model, analyzes the degree of pressure drop of the artificial chamber test model, and then analyzes the pressure holding sealing performance of the artificial chamber test model. .

[0011] S5. Decompression test: Test the air pressure at each decompression time point of the artificial chamber test model, and analyze the deformation degree of the artificial chamber test model. .

[0012] S6. Leakage detection: Detect the leakage parameters of the artificial chamber test model and analyze the leakage degree evaluation coefficient of the artificial chamber test model. The leakage parameters include air pressure drop rate, air pressure stability time, leakage amount, leakage amount at key positions, and continuous leakage time.

[0013] S7. Comprehensive evaluation: Based on the evaluation coefficients of the sealing performance, pressure-maintaining sealing performance, deformation degree and leakage degree of the artificial chamber test model, the sealing performance evaluation index of the artificial chamber test model is analyzed and feedback is provided.

[0014] Preferably, the specific analysis method of the quality parameters of the model material is as follows: in the first step, a set amount of material samples are cut from the artificial chamber test model, any one of them is recorded as the model material sample, and an image is acquired for it, which is recorded as the model material sample image.

[0015] In the second step, the model material sample is placed on a pressure testing machine, and pressure is gradually applied according to the set force level to analyze and obtain the maximum compressive strength of the model material.

[0016] The third step is to read a set amount of material samples, which are recorded as the test samples of each model material. By constructing various temperature simulation environments and humidity simulation environments, the durability of the model material is analyzed and obtained.

[0017] Preferably, the specific analysis method of the completeness of the artificial chamber test model is: reading the artificial chamber design model from the management database, scanning the artificial chamber test model with a laser scanner, and constructing a 3D model based on it, recorded as the artificial chamber test model, overlapping the artificial chamber test model with the artificial chamber design model, and obtaining the overlapping volume of the artificial chamber test model and the artificial chamber design model, recorded as , extract the volume of the artificial chamber design model and record it as , through the formula Get the completeness of the artificial chamber test model .

[0018] Preferably, the specific analysis method of the model analysis is: read the maximum compressive strength, durability, and integrity of the artificial chamber test model of the model material respectively, and record them as , , , substituting it into the formula Obtain the qualification degree of the artificial chamber test model , Indicates the set maximum compressive strength reference value, The weight factors respectively represent the set maximum compressive strength, durability and integrity, and the qualification degree of the artificial chamber test model is compared with the preset qualification degree threshold. If the qualification degree of the artificial chamber test model is greater than or equal to the preset qualification degree threshold, it means that the qualification degree of the artificial chamber test model is qualified, and an air pressure test is performed on it. Otherwise, it means that the qualification degree of the artificial chamber test model is unqualified, and feedback is given to it.

[0019] Preferably, the specific analysis method of the air pressure detection is: installing a pressure sensor at a set position inside the artificial chamber test model, dividing the predetermined test air pressure into a plurality of air pressure levels according to the set air pressure range, recording them as each air pressure level, dividing the time points according to the set duration, applying the air pressure of each air pressure level to the inside of the artificial chamber test model in turn at each time point, and recording the air pressure of each air pressure level as , Indicates The number of the air pressure level, At the same time, the actual air pressure at each time point inside the artificial chamber test model at each air pressure level is read through the pressure sensor, and the actual air pressure at each air pressure level of the artificial chamber test model is obtained by taking the average value, which is recorded as , through the formula Obtain the sealing performance of the artificial chamber test model , Indicates the number of air pressure levels.

[0020] Preferably, the specific analysis method of the pressure holding test is: when the air pressure applied to the inside of the artificial chamber test model reaches a predetermined test air pressure, the pressure holding stage is entered, the time points are divided according to the set time intervals, recorded as each detection time point, the air pressure of each detection time point of the artificial chamber test model is read by a pressure sensor, two adjacent detection time points are grouped as a group, recorded as each detection time point group, and the air pressure of the two detection time points in each detection time point group is subtracted to obtain the air pressure difference of each detection time point group of the artificial chamber test model, recorded as , Indicates The number of the detection time point group, , substituting it into the formula Obtain the degree of pressure drop in the artificial chamber test model , represents the number of detection time point groups, Indicates the predetermined test air pressure. The pressure drop degree of the artificial chamber test model is compared with the corresponding sealing properties of each preset pressure drop degree to obtain the sealing property corresponding to the pressure drop degree of the artificial chamber test model, which is recorded as the pressure-maintaining sealing property of the artificial chamber test model. .

[0021] Preferably, the specific analysis method of the pressure reduction detection is: randomly select a number of pressure reduction time points according to the set duration, and select a number of detection points on the artificial chamber test model, which are recorded as each model detection point, and slowly reduce the air pressure inside the artificial chamber test model. The air pressure at each pressure reduction time point inside the artificial chamber test model is detected by a pressure sensor, which is recorded as the air pressure at each pressure reduction time point of the artificial chamber test model, and during the pressure reduction process, the displacement of each model detection point of the artificial chamber test model at each pressure reduction time point is synchronously collected by a displacement sensor. Two adjacent pressure reduction time points are grouped as a group, which are recorded as each pressure reduction time point group. The displacement of each model detection point of the artificial chamber test model at each pressure reduction time point group is obtained by analyzing the method of analyzing the air pressure difference of each detection time point group of the artificial chamber test model, which is recorded as , Indicates The number of the step-down time point group, , Indicates The number of the model detection point, , through the formula Obtain the deformation degree of the artificial chamber test model , Indicates the maximum allowable value of the set displacement. represents the number of blood pressure reduction time point groups, Indicates the number of model checkpoints.

[0022] Preferably, the specific analysis method of the leakage detection is as follows: the first step is to read the air pressure at each depressurization time point of the artificial chamber test model, and count the number of depressurization time points, which is recorded as , and obtain the air pressure inside the artificial chamber test model at the first and last depressurization time points, respectively, and record it as the initial air pressure inside the artificial chamber test model , the final pressure inside the artificial chamber test model , and record the set duration as , through the formula Get the pressure drop rate of the artificial chamber test model At the same time, read each pressure reduction time point group, filter out the adjacent air pressure stable time point groups, accumulate the duration of each adjacent air pressure stable time point group to get the duration of each adjacent air pressure stable time point group, filter out the maximum value, and record it as the air pressure stable duration of the artificial chamber test model .

[0023] The second step is to read the pressure reduction time points of the artificial chamber test model and number them. The artificial chamber test model is divided into parts according to the parts, and the leakage of each part of the artificial chamber test model at each depressurization time point is detected by an infrared gas leak detector, which is recorded as , Indicates The number of the part, , through the formula Get the leakage of the artificial chamber test model According to the setting, the key parts are selected from each part, and the leakage amount of each key part of the artificial chamber test model at each depressurization time point is extracted from the leakage amount of each part at each depressurization time point of the artificial chamber test model, and the leakage amount of the key part of the artificial chamber test model at each depressurization time point is accumulated to obtain .

[0024] The third step is to read the leakage amount of each part of the artificial chamber test model at each depressurization time point, and obtain the leakage amount of the artificial chamber test model at each depressurization time point by accumulating them. According to the set leakage amount interval, the depressurization time points whose leakage amount is within the set leakage amount interval are selected, and recorded as each leakage time point. The earliest time point and the latest time point are selected from each leakage time point, and the continuous leakage duration is obtained by subtracting the earliest time point from the latest time point, which is recorded as .

[0025] Preferably, the specific analysis method of the leakage evaluation coefficient of the artificial chamber test model is: respectively reading the pressure drop rate of the artificial chamber test model , Air pressure stability time , Leakage , Leakage volume of key parts at each pressure reduction time point , Continuous leakage duration , substituting it into the formula Obtain the leakage evaluation coefficient of the artificial chamber test model , They represent the reference values ​​of the set air pressure drop rate, air pressure stabilization time, leakage amount, and continuous leakage time. They represent the weight factors of the set air pressure drop rate, air pressure stabilization time, leakage degree, and continuous leakage time. Respectively represent the weight factors of the set leakage amount and the leakage amount of key parts, Represents a natural constant.

[0026] Preferably, the specific analysis method of the comprehensive evaluation is: reading the sealing performance of the artificial chamber test model respectively , pressure-maintaining sealing , Deformation degree , Leakage degree evaluation coefficient , substituting it into the formula Obtain the sealing performance evaluation index of the artificial chamber test model , They represent the weight factors of the evaluation coefficients of sealing, pressure-retaining sealing, deformation degree, and leakage degree respectively. Indicates the set sealing reference value, Represents a natural constant. The sealing performance evaluation index of the artificial chamber test model is compared with the preset sealing performance evaluation index threshold. If the sealing performance evaluation index of the artificial chamber test model is greater than or equal to the preset sealing performance evaluation index threshold, it means that the sealing performance evaluation of the artificial chamber test model is qualified, otherwise it means unqualified, and feedback is given.

[0027] Compared with the prior art, the embodiments of the present invention have at least the following advantages or beneficial effects: 1. The present invention obtains the qualification degree of the artificial chamber test model according to the maximum compressive strength, durability and integrity of the artificial chamber test model of the model material, and provides feedback thereon, thereby being able to establish a comprehensive evaluation system for the quality of the artificial chamber test model, and helping to promptly discover unqualified situations.

[0028] 2. The present invention detects the leakage parameters of the artificial chamber test model and analyzes to obtain the leakage degree evaluation coefficient of the artificial chamber test model, which helps to timely discover potential leakage problems so as to take targeted measures to repair and improve them and improve the safety and reliability of the model.

[0029] 3. The present invention analyzes and obtains the sealing performance evaluation index of the artificial chamber test model based on the sealing, pressure-maintaining sealing, deformation degree, and leakage degree evaluation coefficient of the artificial chamber test model, and provides feedback. It can comprehensively and systematically evaluate the quality and performance of the artificial chamber test model, better ensure the sealing effect of the artificial chamber in a specific environment, and prevent the adverse effects caused by leakage and other problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0031] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0032] Figure 2 for Figure 1 Schematic diagram of the method flow for determining the quality parameters of the model material in step S1.

[0033] Figure 3 for Figure 1 Flow chart of the method in step S7. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1 As shown, the present invention provides a sealing performance pressure testing method based on an artificial chamber test model, the method comprising the following steps: S1. Model detection: detecting the quality parameters of the model material and the integrity of the artificial chamber test model, the quality parameters including maximum compressive strength and durability.

[0036] See also Figure 2 As shown, the specific analysis method of the quality parameters of the model material is as follows: the first step is to intercept a number of set amounts of material samples from the artificial chamber test model, randomly select one of them as the model material sample, obtain an image of it, and record it as the model material sample image; by intercepting a set amount of material samples and obtaining images, the characteristics, structure, etc. of the material can be more accurately studied and analyzed, providing a reliable basis for subsequent in-depth research.

[0037] In the second step, the model material sample is placed on a pressure testing machine, and pressure is gradually applied according to the set force level to analyze and obtain the maximum compressive strength of the model material. Clarifying the maximum compressive strength of the model material under pressure can accurately evaluate its mechanical properties and bearing capacity.

[0038] It should be noted that the specific analysis method of the maximum compressive strength of the model material is: placing the model material sample on a pressure testing machine, gradually applying pressure according to the set force classification, recording the set force classification as each force grade and acquiring the model material sample image at each force grade after a set time to obtain the model material sample image of each force grade, overlapping the model material sample image of each force grade with the model material sample image respectively, and obtaining the overlapping area of ​​the model material sample image of each force grade with the model material sample image, which is recorded as , Indicates The number of the intensity level, , substituting it into the formula Get the deformation degree of the model material samples at each strength level , Represents the area of ​​the model material sample image. The deformation degrees of the model material samples of each strength level are arranged in order from small to large, and are compared with the preset deformation degree thresholds in turn. The strength level corresponding to the first model material sample whose deformation degree is greater than or equal to the preset deformation degree threshold is recorded as the maximum compressive strength of the model material, recorded as ; It can effectively screen out materials that meet specific compressive strength requirements, ensure model quality, and better simulate the pressure conditions in the actual environment, making the performance of materials under various complex conditions more predictable.

[0039] The third step is to read a set amount of material samples, which are recorded as the test samples of each model material. By constructing various temperature simulation environments and humidity simulation environments, the durability of the model material is analyzed and obtained. This can help accurately select materials suitable for specific environmental conditions and improve the reliability of material application.

[0040] It should be noted that the specific analysis method for the durability of the model material is as follows: simulate the actual use environment according to the set temperature and humidity, which are recorded as each temperature simulation environment and each humidity simulation environment, place each model material test sample in each temperature simulation environment and each humidity simulation environment respectively, take a number of time points according to the set duration, and use a high-definition camera to acquire images of the model material test samples at each time point to obtain the model material test images at each temperature simulation environment and each humidity simulation environment at each time point, and use edge detection technology to extract the number of cracks and the area of ​​cracks at each location from the model material test images at each time point in each temperature simulation environment, which are recorded as , Indicates The number of the temperature simulation environment, , Indicates The number of the time point, , Indicates The number of the cracks, , substituting it into the formula Get the durability of the material test samples of each temperature simulation environment model , They represent the weight factors of the set crack number and crack area respectively. Represents the number of time points. The durability of each humidity simulation environment model material test sample is obtained by analyzing the durability of each temperature simulation environment model material test sample, which is recorded as , Indicates The number of the humidity simulation environment, , through the formula Get the durability of the model material ; It fully considers different temperature and humidity environments, more truly reflects the performance of materials in actual complex environments, makes the control of material quality more refined and strict, and ensures the stability of product quality.

[0041] It should be noted that It can be set to 0.6. It can be set to 0.4. A larger number of cracks often means that the material is more prone to overall degradation and damage under this temperature environment, which may more directly reflect durability problems. The crack area is also important, but relatively speaking, its weight may be slightly lower than the number of cracks. A larger crack area may indicate that the severity of a single crack is higher, but if there are only a few cracks with larger areas, their impact on the overall durability may not be as serious as when there are many cracks but a smaller area. Therefore, the weight corresponding to the number of cracks is larger.

[0042] The specific analysis method of the completeness of the artificial chamber test model is as follows: the artificial chamber design model is read from the management database, the artificial chamber test model is scanned by a laser scanner, and a 3D model is constructed based on the model, which is recorded as the artificial chamber test model; the artificial chamber test model is overlapped with the artificial chamber design model to obtain the overlap volume of the artificial chamber test model and the artificial chamber design model, which is recorded as , extract the volume of the artificial chamber design model and record it as , through the formula Get the completeness of the artificial chamber test model ; It can effectively monitor the construction quality of artificial chambers during the construction process to ensure that it meets the design requirements.

[0043] S2. Model analysis: The qualification of the artificial chamber test model is obtained based on the maximum compressive strength, durability and integrity of the model material. , and provide feedback.

[0044] The specific analysis method of the model analysis is: read the maximum compressive strength, durability, and integrity of the artificial chamber test model of the model material respectively, and record them as , , , substituting it into the formula Obtain the qualification degree of the artificial chamber test model , Indicates the set maximum compressive strength reference value, The weight factors respectively represent the set maximum compressive strength, durability and integrity, and the qualification level of the artificial chamber test model is compared with the preset qualification level threshold. If the qualification level of the artificial chamber test model is greater than or equal to the preset qualification level threshold, it means that the qualification level of the artificial chamber test model is qualified, and an air pressure test is performed on it. Otherwise, it means that the qualification level of the artificial chamber test model is unqualified, and feedback is given to it. This helps to ensure that the artificial chamber test model meets the requirements in terms of compressive strength, durability and integrity, improve the overall quality, and ensure the safety and stability of the artificial chamber in actual use.

[0045] It should be noted that It can be set to 0.4. It can be set to 0.4. It can be set to 0.2. Artificial chambers need to withstand a certain air pressure and load. Compressive strength is a key indicator to ensure its structural stability and safety. If the compressive strength is insufficient, it may directly lead to serious problems such as the collapse of the chamber, which will have a significant impact on the degree of qualification. Durability is equally important, because artificial chambers usually need to maintain good performance for a long time. If the durability is not good, various problems may gradually arise during use, affecting its normal use and lifespan, and thus affecting the degree of qualification. The degree of integrity mainly reflects the current appearance of the chamber. Although it is not as critical as compressive strength and durability, if there is serious incompleteness, it will also have a certain impact on its degree of qualification. Therefore, the weights corresponding to the maximum compressive strength and durability are higher.

[0046] S3. Air pressure detection: The actual air pressure of the artificial chamber test model at each time point is read by the pressure sensor, and the sealing performance of the artificial chamber test model is analyzed. .

[0047] The specific analysis method of the air pressure detection is as follows: a pressure sensor is installed at a set position inside the artificial chamber test model, a predetermined test air pressure is divided into a plurality of air pressure levels according to a set air pressure range, recorded as each air pressure level, a time point is divided according to a set duration, and air pressures of each air pressure level are applied to the artificial chamber test model in turn at each time point, and the air pressures of each air pressure level are recorded as , Indicates The number of the air pressure level, At the same time, the actual air pressure at each time point inside the artificial chamber test model at each air pressure level is read through the pressure sensor, and the actual air pressure at each air pressure level of the artificial chamber test model is obtained by taking the average value, which is recorded as , through the formula Obtain the sealing performance of the artificial chamber test model , Indicates the number of air pressure levels; can carefully evaluate the sealing performance of the artificial chamber test model at different air pressure levels and time points, ensuring that the artificial chamber can maintain good sealing in actual use and prevent safety hazards such as leakage.

[0048] S4. Pressure holding test: When the air pressure reaches the predetermined test pressure, it enters the pressure holding stage. The pressure sensor reads the air pressure at each test time point of the artificial chamber test model, analyzes the degree of pressure drop of the artificial chamber test model, and then analyzes the pressure holding sealing performance of the artificial chamber test model. .

[0049] It should be noted that the specific method of the pressure holding stage is as follows: in the first step, when the air pressure applied to the interior of the artificial chamber test model reaches a predetermined test air pressure, the air inlet channel is closed and the injection of gas into the interior of the artificial chamber test model is stopped;

[0050] The second step is to set the pressure holding time, and take several time points within the pressure holding time according to the set time interval, record them as the detection time points, and read the air pressure of the artificial chamber test model at each detection time point through the pressure sensor;

[0051] The third step is to analyze the degree of air pressure drop in the artificial chamber test model, and then analyze the pressure-maintaining sealing performance of the artificial chamber test model.

[0052] The specific analysis method of the pressure holding test is as follows: when the air pressure applied to the inside of the artificial chamber test model reaches a predetermined test air pressure, the pressure holding stage is entered, and the time points are divided according to the set time intervals, which are recorded as each detection time point. The air pressure of each detection time point of the artificial chamber test model is read by a pressure sensor, and two adjacent detection time points are grouped as a group, which are recorded as each detection time point group, and the air pressure difference of each detection time point group of the artificial chamber test model is obtained by subtracting the air pressure of two detection time points in each detection time point group, which is recorded as , Indicates The number of the detection time point group, , substituting it into the formula Obtain the degree of pressure drop in the artificial chamber test model , represents the number of detection time point groups, Indicates the predetermined test air pressure. The pressure drop degree of the artificial chamber test model is compared with the corresponding sealing properties of each preset pressure drop degree to obtain the sealing property corresponding to the pressure drop degree of the artificial chamber test model, which is recorded as the pressure-maintaining sealing property of the artificial chamber test model. ; The changes in air pressure in the artificial chamber during the pressure holding stage can be understood in detail, so as to accurately evaluate its pressure holding performance. By analyzing the air pressure difference and the degree of air pressure drop, possible small leaks can be discovered in time.

[0053] S5. Decompression test: Test the air pressure at each decompression time point of the artificial chamber test model, and analyze the deformation degree of the artificial chamber test model. .

[0054] The specific analysis method of the pressure reduction detection is: select a number of pressure reduction time points according to the set time length, and select a number of detection points on the artificial chamber test model, which are recorded as each model detection point, and slowly reduce the air pressure inside the artificial chamber test model. The air pressure at each pressure reduction time point inside the artificial chamber test model is detected by a pressure sensor, which is recorded as the air pressure at each pressure reduction time point of the artificial chamber test model, and during the pressure reduction process, the displacement of each model detection point of the artificial chamber test model at each pressure reduction time point is synchronously collected by a displacement sensor. Two adjacent pressure reduction time points are grouped as a group, which are recorded as each pressure reduction time point group. The displacement of each model detection point of the artificial chamber test model at each pressure reduction time point group is obtained by analyzing the method of analyzing the air pressure difference of each detection time point group of the artificial chamber test model, which is recorded as , Indicates The number of the step-down time point group, , Indicates The number of the model detection point, , through the formula Obtain the deformation degree of the artificial chamber test model , Indicates the maximum allowable value of the set displacement. represents the number of blood pressure reduction time point groups, It indicates the number of detection points of the model; it can provide a detailed understanding of the displacement changes of different detection points of the artificial chamber during the depressurization process, so as to fully grasp its deformation degree and ensure the safe and reliable operation of the artificial chamber under the change of air pressure.

[0055] S6. Leakage detection: Detect the leakage parameters of the artificial chamber test model and analyze the leakage degree evaluation coefficient of the artificial chamber test model. The leakage parameters include air pressure drop rate, air pressure stability time, leakage amount, leakage amount at key positions, and continuous leakage time.

[0056] The specific analysis method of the leakage detection is as follows: the first step is to read the air pressure at each depressurization time point of the artificial chamber test model, and count the number of depressurization time points, which is recorded as , and obtain the air pressure inside the artificial chamber test model at the first and last depressurization time points, respectively, and record it as the initial air pressure inside the artificial chamber test model , the final pressure inside the artificial chamber test model , and record the set duration as , through the formula Get the pressure drop rate of the artificial chamber test model At the same time, read each pressure reduction time point group, filter out the adjacent air pressure stable time point groups, accumulate the duration of each adjacent air pressure stable time point group to get the duration of each adjacent air pressure stable time point group, filter out the maximum value, and record it as the air pressure stable duration of the artificial chamber test model ; It can accurately understand the rate of pressure drop in the artificial chamber during the depressurization process, which is helpful to comprehensively evaluate its air pressure characteristics and determine the duration of air pressure stability. It can better grasp the time it takes for the artificial chamber to reach stability under specific conditions, better understand the changes in air pressure, and ensure safety during use.

[0057] It should be noted that the specific analysis method for screening and obtaining adjacent time point groups is: reading each depressurization time point group, and obtaining the air pressure difference of each depressurization time point group of the artificial chamber test model according to the method of analyzing the air pressure difference of each detection time point group of the artificial chamber test model, and comparing it with the preset air pressure difference range, thereby screening out the depressurization time point groups of the artificial chamber test model whose air pressure difference is within the preset air pressure difference range, and recording them as each air pressure stable time point group, from which adjacent time point groups are further screened out.

[0058] The second step is to read the pressure reduction time points of the artificial chamber test model and number them. The artificial chamber test model is divided into parts according to the parts, and the leakage of each part of the artificial chamber test model at each depressurization time point is detected by an infrared gas leak detector, which is recorded as , Indicates The number of the part, , through the formula Get the leakage of the artificial chamber test model According to the setting, the key parts are selected from each part, and the leakage amount of each key part of the artificial chamber test model at each depressurization time point is extracted from the leakage amount of each part at each depressurization time point of the artificial chamber test model, and the leakage amount of the key part of the artificial chamber test model at each depressurization time point is accumulated to obtain It can clearly know the leakage conditions of different parts of the artificial chamber and accurately find the location of the leakage point. According to the leakage conditions of key parts, targeted maintenance and repairs can be carried out to improve maintenance efficiency.

[0059] The third step is to read the leakage amount of each part of the artificial chamber test model at each depressurization time point, and obtain the leakage amount of the artificial chamber test model at each depressurization time point by accumulating them. According to the set leakage amount interval, the depressurization time points whose leakage amount is within the set leakage amount interval are selected, and recorded as each leakage time point. The earliest time point and the latest time point are selected from each leakage time point, and the continuous leakage duration is obtained by subtracting the earliest time point from the latest time point, which is recorded as It can clearly understand the overall leakage volume at different pressure reduction time points as well as the specific leakage range and time distribution, achieve accurate assessment, find the pressure reduction time points in a specific leakage range, and identify the time periods that require key monitoring and processing.

[0060] S7. Comprehensive evaluation: Based on the evaluation coefficients of the sealing performance, pressure-maintaining sealing performance, deformation degree and leakage degree of the artificial chamber test model, the sealing performance evaluation index of the artificial chamber test model is analyzed and feedback is provided.

[0061] The specific analysis method of the leakage evaluation coefficient of the artificial chamber test model is: respectively reading the pressure drop rate of the artificial chamber test model , Air pressure stability time , Leakage , Leakage volume of key parts at each pressure reduction time point , Continuous leakage duration , substituting it into the formula Obtain the leakage evaluation coefficient of the artificial chamber test model , They represent the reference values ​​of the set air pressure drop rate, air pressure stabilization time, leakage amount, and continuous leakage time. They represent the weight factors of the set air pressure drop rate, air pressure stabilization time, leakage degree, and continuous leakage time. Respectively represent the weight factors of the set leakage amount and the leakage amount of key parts, Represents a natural constant; timely discovers the changing trend of the leakage degree, plays an effective risk warning role, helps to ensure the safe operation of the artificial chamber, and reduces the potential danger caused by leakage.

[0062] It should be noted that It can be set to 0.5. It can be set to 0.5. The leakage volume can comprehensively reflect the leakage situation of the entire system or structure. It covers the cumulative effect of all possible leakage points and is a comprehensive reflection of the degree of leakage. It is of great significance for assessing the severity and scope of leakage. Leakage in key parts may cause more serious consequences or have a more direct impact on system functions. Therefore, the weights of leakage volume and leakage in key parts are equal.

[0063] It should be noted that It can be set to 0.3. It can be set to 0.3. It can be set to 0.3. It can be set to 0.1. The air pressure drop rate can intuitively and quickly reflect the severity of the leakage. The faster the drop rate, the more serious the leakage, and the greater the impact on the leakage degree evaluation. The air pressure stabilization time is also very important. If the air pressure can be stable for a long time, it means that the leakage is well controlled or there is no serious leakage. Otherwise, it means that the leakage problem is more prominent. It can reflect the impact of the persistence and stability of the leakage on the overall leakage degree. The leakage degree is an indicator that directly measures the leakage condition itself. Its size is directly related to the severity of the leakage and is crucial to the evaluation of the leakage degree. The weight of the continuous leakage duration is relatively small, but it is still important. It mainly reflects the duration of the leakage, but in comparison, it may not be as critical as the air pressure drop rate and the leakage degree. However, long-term continuous leakage will also have a greater impact on the leakage degree evaluation. Therefore, the air pressure drop rate, air pressure stabilization time, and leakage degree have higher corresponding weights.

[0064] See also Figure 3 As shown, the specific analysis method of the comprehensive evaluation is: reading the sealing performance of the artificial chamber test model respectively , pressure-maintaining sealing , Deformation degree , Leakage degree evaluation coefficient , substituting it into the formula Obtain the sealing performance evaluation index of the artificial chamber test model , They represent the weight factors of the evaluation coefficients of sealing, pressure-retaining sealing, deformation degree, and leakage degree respectively. Indicates the set sealing reference value, Represents a natural constant. The sealing performance evaluation index of the artificial chamber test model is compared with the preset sealing performance evaluation index threshold. If the sealing performance evaluation index of the artificial chamber test model is greater than or equal to the preset sealing performance evaluation index threshold, it means that the sealing performance evaluation of the artificial chamber test model is qualified, otherwise it means unqualified, and feedback is given to it; quickly judge whether the sealing performance is qualified, so as to discover potential problems in time and take measures. Good sealing performance is helpful to ensure the safe and stable operation of the artificial chamber.

[0065] It should be noted that It can be set to 0.3. It can be set to 0.3. It can be set to 0.2. It can be set to 0.2. Sealing is usually more important because it is the most direct indicator of sealing performance. Good sealing is the basis and core of sealing performance, and plays a key role in the evaluation of sealing performance. Pressure-maintaining sealing is also very important. It reflects the ability to maintain sealing under air pressure conditions, which is very important for the actual application of artificial chambers and is directly related to its sealing performance under specific working conditions. The degree of deformation is relatively moderate. Although the degree of deformation will affect the sealing performance, it may not be as direct and critical as sealing and pressure-maintaining sealing. However, larger deformation may indirectly lead to sealing problems. The leakage degree evaluation coefficient is more of a result after poor sealing performance, and indicators such as sealing and pressure-maintaining sealing have covered the consideration of leakage to a certain extent, but it is still an aspect that cannot be ignored in evaluating sealing performance. Therefore, the weights corresponding to sealing and pressure-maintaining sealing are higher, and the weights corresponding to deformation degree and leakage degree evaluation coefficient are second.

[0066] The present invention obtains the qualification degree of the artificial chamber test model according to the maximum compressive strength and durability of the model material and the integrity of the artificial chamber test model, and provides feedback thereto; according to the sealing performance, pressure-maintaining sealing performance, deformation degree and leakage degree evaluation coefficient of the artificial chamber test model, the sealing performance evaluation index of the artificial chamber test model is analyzed and feedback is provided; the quality and performance of the artificial chamber test model can be comprehensively and systematically evaluated, so as to better ensure the sealing effect of the artificial chamber in a specific environment and prevent the adverse effects caused by leakage and other problems.

[0067] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention and they are still covered by the protection scope of the present invention.

Claims

1. A sealing performance pressure test method based on an artificial chamber test model, characterized in that: The steps include: S1. Model testing: testing the quality parameters of the model materials and the integrity of the artificial chamber test model. The quality parameters include maximum compressive strength and durability. S2. Model analysis: The qualification of the artificial chamber test model is obtained based on the maximum compressive strength, durability and integrity of the model material. , and provide feedback; S3. Air pressure detection: The actual air pressure of the artificial chamber test model at each time point is read by the pressure sensor, and the sealing performance of the artificial chamber test model is analyzed. ; S4. Pressure holding test: When the air pressure reaches the predetermined test pressure, it enters the pressure holding stage. The pressure sensor reads the air pressure at each test time point of the artificial chamber test model, analyzes the degree of pressure drop of the artificial chamber test model, and then analyzes the pressure holding sealing performance of the artificial chamber test model. ; S5. Decompression test: Test the air pressure at each decompression time point of the artificial chamber test model, and analyze the deformation degree of the artificial chamber test model. ; S6. Leakage detection: Detect the leakage parameters of the artificial chamber test model and analyze the leakage degree evaluation coefficient of the artificial chamber test model. ,The leakage parameters include air pressure drop rate, air pressure stability time, leakage amount, leakage amount at key locations, and continuous leakage time; S7. Comprehensive evaluation: Based on the evaluation coefficients of the sealing performance, pressure-maintaining sealing performance, deformation degree and leakage degree of the artificial chamber test model, the sealing performance evaluation index of the artificial chamber test model is analyzed and feedback is provided.

2. The sealing performance pressure testing method based on the artificial chamber test model according to claim 1 is characterized in that: The specific analysis method of the quality parameters of the model material is: The first step is to cut a number of set amounts of material samples from the artificial chamber test model, randomly select one of them as a model material sample, obtain an image of it, and record it as a model material sample image; The second step is to place the model material sample on a pressure testing machine, gradually apply pressure according to the set force level, and analyze and obtain the maximum compressive strength of the model material; The third step is to read a set amount of material samples, which are recorded as the test samples of each model material. By constructing various temperature simulation environments and humidity simulation environments, the durability of the model material is analyzed and obtained.

3. The sealing performance pressure testing method based on the artificial chamber test model according to claim 2 is characterized in that: The specific analysis method of the completeness of the artificial chamber test model is as follows: The artificial chamber design model is read from the management database, the artificial chamber test model is scanned by a laser scanner, and a 3D model is constructed based on it, which is recorded as the artificial chamber test model. The artificial chamber test model is overlapped with the artificial chamber design model to obtain the overlap volume of the artificial chamber test model and the artificial chamber design model, which is recorded as , extract the volume of the artificial chamber design model and record it as , through the formula Get the completeness of the artificial chamber test model .

4. The sealing performance pressure testing method based on the artificial chamber test model according to claim 3 is characterized in that: The specific analysis method of the model analysis is: Read the maximum compressive strength, durability and integrity of the artificial chamber test model of the model material respectively and record them as , , , substituting it into the formula Obtain the qualification degree of the artificial chamber test model , Indicates the set maximum compressive strength reference value, The weight factors respectively represent the set maximum compressive strength, durability and integrity, and the qualification degree of the artificial chamber test model is compared with the preset qualification degree threshold. If the qualification degree of the artificial chamber test model is greater than or equal to the preset qualification degree threshold, it means that the qualification degree of the artificial chamber test model is qualified, and an air pressure test is performed on it. Otherwise, it means that the qualification degree of the artificial chamber test model is unqualified, and feedback is given to it.

5. The sealing performance pressure testing method based on the artificial chamber test model according to claim 1 is characterized in that: The specific analysis method of the air pressure detection is: A pressure sensor is installed at a set position inside the artificial chamber test model. The predetermined test pressure is divided into several pressure levels according to the set pressure range, which are recorded as each pressure level. The time points are divided according to the set duration. At each time point, the pressure of each pressure level is applied to the inside of the artificial chamber test model in turn, and the pressure of each pressure level is recorded as , Indicates The number of the air pressure level, At the same time, the actual air pressure at each time point inside the artificial chamber test model at each air pressure level is read through the pressure sensor, and the actual air pressure at each air pressure level of the artificial chamber test model is obtained by taking the average value, which is recorded as , through the formula Obtain the sealing performance of the artificial chamber test model , Indicates the number of air pressure levels.

6. A sealing performance pressure test method based on an artificial chamber test model according to claim 5, characterized in that: The specific analysis method of the pressure holding test is: When the air pressure applied to the artificial chamber test model reaches the predetermined test air pressure, it enters the pressure holding stage. The time points are divided according to the set time intervals, which are recorded as each detection time point. The air pressure of each detection time point of the artificial chamber test model is read by the pressure sensor. Two adjacent detection time points are grouped as a group, which are recorded as each detection time point group. The air pressure of the two detection time points in each detection time point group is subtracted to obtain the air pressure difference of each detection time point group of the artificial chamber test model, which is recorded as , Indicates The number of the detection time point group, , substituting it into the formula Obtain the degree of pressure drop in the artificial chamber test model , represents the number of detection time point groups, Indicates the predetermined test air pressure. The pressure drop degree of the artificial chamber test model is compared with the corresponding sealing properties of each preset pressure drop degree to obtain the sealing property corresponding to the pressure drop degree of the artificial chamber test model, which is recorded as the pressure-maintaining sealing property of the artificial chamber test model. .

7. A sealing performance pressure testing method based on an artificial chamber test model according to claim 6, characterized in that: The specific analysis method of the blood pressure reduction detection is: According to the set duration, several depressurization time points are randomly selected, and several detection points are selected on the artificial chamber test model, which are recorded as detection points of each model. The air pressure inside the artificial chamber test model is slowly reduced, and the air pressure at each depressurization time point inside the artificial chamber test model is detected by a pressure sensor, which is recorded as the air pressure at each depressurization time point of the artificial chamber test model. During the depressurization process, the displacement of each detection point of the artificial chamber test model at each depressurization time point is synchronously collected by a displacement sensor. Two adjacent depressurization time points are grouped as a group, which are recorded as each depressurization time point group. The displacement of each detection point of the artificial chamber test model at each depressurization time point group is obtained by analyzing the method of analyzing the air pressure difference of each detection time point group of the artificial chamber test model, which is recorded as , Indicates The number of the step-down time point group, , Indicates The number of the model detection point, , through the formula Obtain the deformation degree of the artificial chamber test model , Indicates the maximum allowable value of the set displacement. represents the number of blood pressure reduction time point groups, Indicates the number of model checkpoints.

8. The sealing performance pressure testing method based on the artificial chamber test model according to claim 7 is characterized in that: The specific analysis method of the leakage detection is: The first step is to read the air pressure at each depressurization time point of the artificial chamber test model and count the number of depressurization time points, which is recorded as , and obtain the air pressure inside the artificial chamber test model at the first and last depressurization time points, respectively, and record it as the initial air pressure inside the artificial chamber test model , the final pressure inside the artificial chamber test model , and record the set duration as , through the formula Get the pressure drop rate of the artificial chamber test model At the same time, read each pressure reduction time point group, filter out the adjacent air pressure stable time point groups, accumulate the duration of each adjacent air pressure stable time point group to get the duration of each adjacent air pressure stable time point group, filter out the maximum value, and record it as the air pressure stable duration of the artificial chamber test model ; The second step is to read the pressure reduction time points of the artificial chamber test model and number them. The artificial chamber test model is divided into parts according to the parts, and the leakage of each part of the artificial chamber test model at each depressurization time point is detected by an infrared gas leak detector, which is recorded as , Indicates The number of the part, , through the formula Get the leakage of the artificial chamber test model According to the setting, the key parts are selected from each part, and the leakage amount of each key part of the artificial chamber test model at each depressurization time point is extracted from the leakage amount of each part at each depressurization time point of the artificial chamber test model, and the leakage amount of the key part of the artificial chamber test model at each depressurization time point is accumulated to obtain ; The third step is to read the leakage amount of each part of the artificial chamber test model at each depressurization time point, and obtain the leakage amount of the artificial chamber test model at each depressurization time point by accumulating them. According to the set leakage amount interval, the depressurization time points whose leakage amount is within the set leakage amount interval are selected, and recorded as each leakage time point. The earliest time point and the latest time point are selected from each leakage time point, and the continuous leakage duration is obtained by subtracting the earliest time point from the latest time point, which is recorded as .

9. A sealing performance pressure test method based on an artificial chamber test model according to claim 8, characterized in that: The specific analysis method of the leakage evaluation coefficient of the artificial chamber test model is: Read the pressure drop rate of the artificial chamber test model respectively , Air pressure stability time , Leakage , Leakage volume of key parts at each pressure reduction time point , Continuous leakage duration , substituting it into the formula Obtain the leakage evaluation coefficient of the artificial chamber test model , They represent the reference values ​​of the set air pressure drop rate, air pressure stabilization time, leakage amount, and continuous leakage time. They represent the weight factors of the set air pressure drop rate, air pressure stabilization time, leakage degree, and continuous leakage time. Respectively represent the weight factors of the set leakage amount and the leakage amount of key parts, Represents a natural constant.

10. The sealing performance pressure testing method based on the artificial chamber test model according to claim 1, characterized in that: The specific analysis method of the comprehensive evaluation is as follows: Read the sealing performance of the artificial chamber test model separately , pressure-maintaining sealing , Deformation degree , Leakage degree evaluation coefficient , substituting it into the formula Obtain the sealing performance evaluation index of the artificial chamber test model , They represent the weight factors of the evaluation coefficients of sealing, pressure-retaining sealing, deformation degree, and leakage degree respectively. Indicates the set sealing reference value, Represents a natural constant. The sealing performance evaluation index of the artificial chamber test model is compared with the preset sealing performance evaluation index threshold. If the sealing performance evaluation index of the artificial chamber test model is greater than or equal to the preset sealing performance evaluation index threshold, it means that the sealing performance evaluation of the artificial chamber test model is qualified, otherwise it means unqualified, and feedback is given.

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