A method and system for testing arc-resistant fabric for use in a substation

Abstract

The application discloses a kind of substation with arc-proof fabric test method and system, it is related to arc-proof fabric test technical field.Substation with arc-proof fabric test method specific steps include: obtaining the fabric to be tested and is made into sample, comfort test is carried out to sample, obtains initial comfort test result;Comfort test after sample is carried out protective performance test, obtains protective performance test result and fabric life;In protective performance test process, the comfort test is carried out to sample in each time period, obtains final comfort test result;Comfort test result and protective test result are combined to carry out comprehensive analysis, obtain arc-proof fabric comprehensive test result.The method improves the comprehensive ability of protective clothing to deal with substation arc accident, provides new train of thought for the quality test of substation protective clothing.

Description

Technical Field

[0001] This invention relates to the field of arc-resistant fabric testing technology, and in particular to a testing method and system for arc-resistant fabric used in substations. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] An electric arc is a gas discharge phenomenon that produces a white, arc-shaped light and high temperatures. The immense heat released instantaneously by an electric arc can directly burn the skin or ignite clothing. Simultaneously, the high temperature causes the explosive expansion of gases and metals in the environment, fast enough to penetrate the human body and cause severe harm. Electric arcs generated during substation operations can cause electric shock or severe direct burns to workers. Currently, most workers only wear on-site protective clothing, which cannot completely prevent electric arc accidents. Workers need to wear specially designed protective clothing made of arc-resistant fabric for on-site operations.

[0004] In the existing technology, due to the different types of arc-proof fabrics, the arc-proof performance and fabric comfort of protective clothing vary. Currently, there is a lack of a method and system that can simultaneously test the comfort and arc-proof performance of protective clothing fabrics in the same testing system. Moreover, the existing comfort testing methods are mainly based on manual testing, which has problems such as large human operation errors, high manpower consumption, and complex operation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a testing method and system for arc-proof fabrics used in substations. This method tests the comfort and protective performance of the arc-proof fabrics, analyzes the test results to obtain the comprehensive performance of the arc-proof fabrics, and provides assurance for the production of protective clothing and on-site operations in substations.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] The first aspect of this invention provides a testing method for arc-resistant fabric used in substations, comprising the following steps:

[0008] Obtain the fabric to be tested and make it into a sample. Conduct a comfort test on the sample to obtain the initial comfort test results.

[0009] After the comfort test, the samples are subjected to protective performance test to obtain the protective performance test results and fabric life; during the protective performance test, the samples at various time periods are subjected to comfort test to obtain the final comfort test results.

[0010] The results of comfort tests and protective tests were combined for comprehensive analysis to obtain the comprehensive test results of the arc-proof fabric.

[0011] Furthermore, comfort testing includes heat and humidity testing and breathability testing.

[0012] Furthermore, the damp heat test involves simulating the human body's sweating process, recording temperature and humidity values ​​to calculate thermal resistance, moisture resistance, and damp heat index to obtain the damp heat test results.

[0013] Furthermore, the specific steps of the air permeability test are as follows: the sample is made into a cylindrical shape, one end is filled with gas at different pressures, the other end is sealed, the pressure difference between the inside and outside of the cylinder is tested, and the air permeability of the sample is calculated.

[0014] Furthermore, protective performance tests include tear tests, arc resistance tests, and flame retardant tests.

[0015] Furthermore, tear tests were conducted by applying radial and latitudinal tearing and breaking forces to the samples, and the force values ​​at the critical point of sample damage were recorded.

[0016] Furthermore, the specific steps of the arc protection test are as follows: continuously pass an arc current through the sample, collect the heat data of the sample and correspond it with the arc current passage time; record the magnitude and duration of the arc current at the critical point of sample damage.

[0017] Furthermore, the vertical burning performance of the samples was tested using flame retardant performance testing methods, and the afterflame time, smoldering time, damage length, and melting and dripping time were recorded.

[0018] A second aspect of the present invention provides a testing system for arc-resistant fabrics used in substations, comprising:

[0019] The comfort testing module includes a damp heat testing module and a breathability testing module; the comfort testing module is used to conduct comfort tests on anti-arc fabrics.

[0020] The protective performance testing module includes a tear test module, an arc resistance test module, and a flame retardant test module; the protective performance testing module is used to test the protective performance of arc resistance fabrics.

[0021] Furthermore, it also includes an analysis module, which is used to analyze and process the data collected during the testing process, and to comprehensively analyze and process the results obtained from the comfort test module and the results obtained from the protection performance test module.

[0022] The above one or more technical solutions have the following beneficial effects:

[0023] This application discloses a testing method for arc-resistant fabric used in substations. By conducting comfort and protective performance tests on the arc-resistant fabric, a comprehensive analysis of these performance aspects is performed, improving the overall capability of protective clothing to cope with arc accidents in substations and providing a new approach to the quality testing of substation protective clothing. Furthermore, this application also conducts comfort tracking tests on the arc-resistant fabric at various time points during the protective performance testing process, comparing the results with the initial comfort performance. This simulates whether comfort changes over time during substation operation, preventing the problem of decreased comfort due to prolonged exposure to a hot and stuffy environment, which could affect substation operational efficiency.

[0024] This application discloses a testing system for arc-proof fabrics used in substations. Through a comfort testing module and a protective performance testing module, the system can simultaneously test the comfort and protective performance of arc-proof fabrics. The system does not require expensive equipment, is easy to implement, and can obtain accurate test results. It has good application prospects in the field of quality testing of protective clothing in actual substations.

[0025] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0027] Figure 1 This is a flowchart of the test method for anti-arc fabric used in substations according to Embodiment 1 of the present invention;

[0028] Figure 2 This is a structural diagram of the substation anti-arc fabric testing system according to Embodiment 2 of the present invention. Detailed Implementation

[0029] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] Example 1:

[0031] Embodiment 1 of the present invention provides a testing method for arc-resistant fabric used in substations, such as... Figure 1 As shown, it includes the following steps:

[0032] Obtain the fabric to be tested and make it into a sample. Conduct a comfort test on the sample to obtain the initial comfort test results.

[0033] After the comfort test, the samples are subjected to protective performance test to obtain the protective performance test results and fabric life; during the protective performance test, the samples at various time periods are subjected to comfort test to obtain the final comfort test results.

[0034] The results of comfort tests and protective tests were combined for comprehensive analysis to obtain the comprehensive test results of the arc-proof fabric.

[0035] The comfort test includes a damp heat test and a breathability test. The protective performance test includes a tear test, an arc flash test, and a flame retardancy test.

[0036] The damp heat test involves simulating the human body's sweating process, recording temperature and humidity values ​​to calculate thermal resistance, moisture resistance, and the damp heat index to obtain the test results. Specifically, the sample is placed in a constant temperature and humidity chamber for fixation. Temperature and humidity sensors are used to measure the internal temperature and humidity values ​​of the sample. Based on the sample's temperature and humidity values, the placement time, and the temperature and humidity of the constant temperature and humidity chamber, the thermal resistance and moisture resistance are calculated, thus obtaining the damp heat index as the damp heat test result.

[0037] The specific steps of the air permeability test are as follows: the sample is made into a cylindrical shape, one end is filled with gas at different pressures, the other end is sealed, the pressure difference between the inside and outside of the cylinder is tested, and the air permeability of the sample is calculated.

[0038] Tear tests were conducted by applying radial and latitudinal breaking and tearing forces to the samples, and the force values ​​at the critical point of sample damage were recorded.

[0039] The specific steps of the arc protection test are as follows: continuously pass an arc current through the sample, collect the heat data of the sample and match it with the time of arc current passage; record the magnitude and duration of the arc current when the sample is at the critical point of damage.

[0040] Specifically, the duration of the electric arc is estimated, and thermal correlation analysis is performed based on the collected data to determine the average heat value of each group of plates at each time point. The average value of the monitoring sensors of each group of plates is calculated, and the maximum value of the average incident energy of each group of plates is determined as the incident energy of each group of plates. Logistic regression analysis is performed on the incident energy of each group of plates, and the arc protection performance parameters are obtained by comparing it with the Stoller response value.

[0041] The results of the thermal correlation analysis were compared with the empirical model of the Stroll curve to calculate the arc thermal protection performance value;

[0042] The vertical burning performance of the samples was tested using a flame retardant performance test method, and the afterflame time, smoldering time, damage length, and melting and dripping time were recorded. The flame retardant performance test method was the 16CFR1615 / 1616 method, and the specific steps were as follows: the sample was dried, placed vertically in a vertical burner, and after contacting a 1.5-inch flame for 3 seconds, the fabric sample was removed, and the sample was taken out after it had completely extinguished and cooled.

[0043] Gently tear the burned sample apart with a heavy hammer, remove the charred material and melt, and then measure the carbonization length with a ruler. The carbonization length is the vertical distance between the tear end and the bottom edge of the sample where the flame begins to burn.

[0044] The breathability and moisture index of protective fabrics change with the surrounding environment. To prevent a sharp decrease in the comfort of the protective fabric over time, which could lead to fainting among workers in a stuffy environment, comfort tests need to be conducted on samples at various time points. For example, during arc flash testing, after a period of current flow, some samples are removed and retested for comfort. The results are then compared with the initial comfort test results to see if any changes occur. Based on the fabric lifespan and the duration of the protective performance test, a comfort change curve is calculated, reminding workers to change their protective clothing after a certain period of work to ensure high work efficiency.

[0045] The results of comfort and protection tests are combined and analyzed to obtain the comprehensive test results for the arc flash protection fabric. The specific steps are as follows: based on experience or trial data of various protective clothing, the various properties of the protective fabric are weighted and allocated; combined with the time curves of comfort and protection records, the comprehensive performance score of the protective fabric is calculated to obtain the final test results.

[0046] Example 2:

[0047] Embodiment 2 of the present invention provides a testing system for anti-arc fabric in substations, such as... Figure 2 As shown, it includes:

[0048] The comfort testing module includes a damp heat testing module and a breathability testing module; the comfort testing module is used to conduct comfort tests on anti-arc fabrics.

[0049] The protective performance testing module includes a tear test module, an arc resistance test module, and a flame retardant test module; the protective performance testing module is used to test the protective performance of arc resistance fabrics.

[0050] The analysis module is used to analyze and process the data collected during the testing process, and also to perform comprehensive analysis and processing of the results obtained from the comfort test module and the protection performance test module.

[0051] The damp heat testing module includes a constant temperature and humidity chamber, a temperature sensor, and a humidity sensor. The temperature and humidity sensor measures the temperature and humidity of the sample surface and transmits the measurement data along with the data from the constant temperature and humidity chamber to the analysis module for analysis to obtain the damp heat index.

[0052] The air permeability testing module includes an air compressor, a pressure gauge, an air tank, and an air delivery pipeline. The air compressor controls the pressure of different airflows, and the gas in the air tank is delivered to the cylinder formed by the sample through the air delivery pipeline. The pressure gauge measures the pressure inside and outside the cylinder and transmits the data to the analysis module, which analyzes and obtains the air permeability index.

[0053] The tear test module uses an existing fabric strength tester to apply warp and weft tear strength to the fabric and transmits the data to the analysis module for analysis.

[0054] The arc protection testing module includes an arc controller, arc electrodes, several sets of sensor panels, and monitoring sensors. The arc controller controls the arc electrodes to emit an arc, and the data from the sensor panels and monitoring sensors is uploaded to the analysis module to obtain the arc protection performance parameters.

[0055] The flame retardant testing module includes a vertical burner and a measuring device, which is used to measure the length of char.

[0056] The steps and methods described in Embodiment 2 correspond to those in Embodiment 1. For detailed implementation methods, please refer to the relevant descriptions in Embodiment 1. Those skilled in the art should understand that the modules or steps of the present invention described above can be implemented using general-purpose computer devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computer device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. The present invention is not limited to any specific combination of hardware and software.

[0057] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A testing method for arc-resistant fabric used in substations, characterized in that, Includes the following steps: Obtain the fabric to be tested and make it into a sample. Conduct a comfort test on the sample to obtain the initial comfort test results. The samples after the comfort test were subjected to a protective performance test to obtain the protective performance test results and the fabric life. During the protective performance test, comfort tests are conducted on samples at various time periods. The test results are compared with the initial comfort test results. Based on the obtained fabric lifespan and the duration of the protective performance test, the comfort change curve is calculated to obtain the final comfort test results. The results of comfort tests and protective tests are combined for comprehensive analysis to obtain the comprehensive test results of the arc flash protection fabric. The specific steps are as follows: the various performance characteristics of the protective fabric are weighted according to the trial data of various protective clothing, and the comprehensive performance of the protective fabric is calculated by combining the time curves of comfort and protective records to obtain the final test results.

2. The test method for anti-arc fabric used in substations as described in claim 1, characterized in that, Comfort testing includes heat and humidity testing and breathability testing.

3. The test method for anti-arc fabric used in substations as described in claim 2, characterized in that, The damp heat test involves simulating the human body's sweating process, recording temperature and humidity values, and then calculating thermal resistance, moisture resistance, and damp heat index to obtain the damp heat test results.

4. The test method for anti-arc fabric used in substations as described in claim 2, characterized in that, The specific steps of the air permeability test are as follows: the sample is made into a cylindrical shape, one end is filled with gas at different pressures, the other end is sealed, the pressure difference between the inside and outside of the cylinder is tested, and the air permeability of the sample is calculated.

5. The test method for anti-arc fabric used in substations as described in claim 1, characterized in that, Protective performance tests include tear tests, arc resistance tests, and flame retardant tests.

6. The test method for anti-arc fabric used in substations as described in claim 5, characterized in that, The specific steps of the arc protection test are as follows: continuously pass an arc current through the sample, collect the heat data of the sample and match it with the time of arc current passage; record the magnitude and duration of the arc current when the sample is at the critical point of damage.

7. The test method for anti-arc fabric used in substations as described in claim 5, characterized in that, The vertical burning performance of the samples was tested using flame retardant performance testing methods.

8. A testing system for arc-resistant fabric used in substations, employing the testing method for arc-resistant fabric used in substations as described in any one of claims 1-7, comprising: The comfort testing module includes a heat and humidity testing module and a breathability testing module; The comfort testing module is used to conduct comfort tests on arc-resistant fabrics; The protective performance testing module includes a tear test module, an arc resistance test module, and a flame retardant test module; the protective performance testing module is used to test the protective performance of arc resistance fabrics. It also includes an analysis module, which is used to analyze and process the data collected during the test, and to perform comprehensive analysis and processing of the results obtained from the comfort test module and the protective performance test module.

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