Evaluation method and device for fireproof partition plate of power transmission line and electronic equipment

Abstract

The invention discloses an evaluation method and device for a fireproof partition plate of a power transmission line and electronic equipment. The method comprises the steps that environment information of the fireproof partition plate of the power transmission line is acquired, and the environment information is used for representing the temperature and humidity of the environment where the fireproof partition plate is located and the influence degree on the aging condition of the fireproof partition plate; based on the environment information, a first test strategy of the fireproof partition plate is determined, and the first test strategy is used for representing a rule for testing the heat insulation performance under different aging conditions; according to a first test strategy, performing a fire test on the fireproof partition plate to obtain a first test result; based on the heat insulation time of the fireproof partition plate in the first test result, an evaluation result of the heat insulation performance is determined, and the evaluation result is used for representing whether the heat insulation performance fails or not. The technical problem that the evaluation accuracy of the fireproof partition plate is low is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to an evaluation method, device and electronic equipment for fireproof partitions of power transmission lines. Background Art

[0002] At present, fireproof partitions can be used in cable tunnels to protect transmission lines through fire prevention and heat insulation. For example, in emergency situations such as fire, fireproof partitions can be used in transmission lines to effectively prevent the spread of fire and protect the safety of transmission lines and surrounding facilities.

[0003] However, the performance of fireproof partitions is affected by many factors. The performance evaluation of fireproof partitions mainly relies on regular manual inspection, which is not only time-consuming and labor-intensive, but also has a long inspection cycle and is difficult to reflect the aging status of fireproof partitions and their impact on thermal insulation performance in real time. In addition, manual inspection is highly subjective and the accuracy of the evaluation results is difficult to guarantee. Therefore, there is still a technical problem of low evaluation accuracy of fireproof partitions.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method, device and electronic equipment for evaluating fireproof partitions of power transmission lines, so as to at least solve the technical problem of low evaluation accuracy of fireproof partitions.

[0006] According to one aspect of an embodiment of the present invention, a method for evaluating a fireproof partition of a power transmission line is provided. The method may include: obtaining environmental information of the fireproof partition of the power transmission line, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partition is located, and the degree of influence on the aging condition of the fireproof partition; based on the environmental information, determining a first test strategy for the fireproof partition, wherein the first test strategy is used to indicate the rules for testing the thermal insulation performance under different aging conditions; performing a fire test on the fireproof partition according to the first test strategy to obtain a first test result; determining an evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed.

[0007] Optionally, the method also includes: based on environmental information, determining a second test strategy for testing the strength performance of the fireproof partition, wherein the second test strategy is a rule for testing the strength performance under different aging conditions; testing the fireproof partition according to the second test strategy to obtain a second test result; based on the second test result, determining an evaluation result of the strength performance, wherein the evaluation result of the strength performance is used to indicate whether the strength performance has failed.

[0008] Optionally, the strength performance includes at least one of the following: dry bending strength performance, impact strength performance and water-saturated bending strength performance, wherein, based on the environmental information, a second test strategy for testing the strength performance of the fire partition is determined, including: based on the environmental information, determining the flat bending strength data, water-saturated bending strength data and / or impact strength data under different aging cycles of the fire partition; determining the second test strategy corresponding to different aging cycles, different flat bending strength data, different water-saturated bending strength data and different impact strength data.

[0009] Optionally, based on the second test result, the evaluation result of the strength performance is determined, including: in response to the evaluation result of the strength performance being strength performance failure, determining the bending performance failure cycle and the impact performance failure cycle of the fireproof partition; the method also includes: in response to the evaluation result of the thermal insulation performance being thermal insulation performance failure, determining the thermal insulation performance failure cycle of the fireproof partition; and determining the minimum value among the bending performance failure cycle, the impact performance failure cycle and the thermal insulation performance failure cycle as the failure cycle of the fireproof partition.

[0010] Optionally, obtaining environmental information of fireproof partitions of transmission lines includes: obtaining temperature data and humidity data of the environment in which the fireproof partitions are located, wherein the temperature data includes accelerated aging temperature and natural aging temperature; and determining environmental information based on the accelerated aging temperature, natural aging temperature and humidity data.

[0011] Optionally, based on the environmental information, a first test strategy for testing the thermal insulation performance of the fireproof partition is determined, including: determining an aging cycle of the fire test based on the environmental information; and formulating a corresponding first test strategy based on different aging cycles.

[0012] Optionally, the first test result includes an attenuation fitting curve of the thermal insulation performance, wherein, according to the first test strategy, a fire test is performed on the fireproof partition to obtain the first test result, including: building a combustion platform corresponding to the fireproof partition to simulate the fire condition of the transmission line under different voltage levels; based on the combustion platform, obtaining the temperature data that the fireproof partition is resistant to under the fire condition; based on the temperature data, building a fire test platform for performing a fire test on the fireproof partition; using the fire test platform, calling the first test strategy corresponding to different aging cycles, performing a fire test on the fireproof partition, and obtaining the corresponding attenuation fitting curve of the thermal insulation performance.

[0013] According to another aspect of an embodiment of the present invention, there is also provided an evaluation device for fireproof partitions of a power transmission line, comprising: an acquisition unit, for acquiring environmental information of the fireproof partitions of the power transmission line, wherein the environmental information is used to indicate the degree of influence of the temperature and humidity of the environment in which the fireproof partitions are located on the aging condition of the fireproof partitions; a first determination module, for determining a first test strategy for the fireproof partitions based on the environmental information, wherein the first test strategy is used to indicate a rule for testing the thermal insulation performance under different aging conditions; a testing module, for performing a fire test on the fireproof partitions according to the first test strategy to obtain a first test result; and a second determination module, for determining an evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partitions in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed.

[0014] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a plurality of instructions, wherein the instructions are suitable for being loaded by a processor and executing any one of the above-mentioned methods for evaluating fire partitions of power transmission lines.

[0015] According to another aspect of an embodiment of the present invention, there is also provided an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute any one of the above-mentioned methods for evaluating fire partitions of transmission lines.

[0016] In an embodiment of the present invention, if it is necessary to evaluate the performance of the fireproof partition of the cable tunnel, the environmental information of the fireproof partition of the transmission line can be obtained, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partition is located, and the degree of influence on the aging condition of the fireproof partition; based on the environmental information, a first test strategy for the fireproof partition can be determined, wherein the first test strategy is used to indicate the rule for testing the thermal insulation performance under different aging conditions; the fireproof partition can be subjected to a fire test according to the first test strategy to obtain a first test result; the evaluation result of the thermal insulation performance can be determined based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed. In this embodiment, by obtaining the environmental information of the fireproof partition of the transmission line, the fireproof partition is subjected to a fire test according to the rule for testing the thermal insulation performance under different aging conditions based on the environmental information, and whether the thermal insulation performance has failed is determined according to the thermal insulation time of the fireproof partition in the test result, thereby achieving the technical effect of improving the evaluation accuracy of the fireproof partition and solving the technical problem of low evaluation accuracy of the fireproof partition. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 is a flow chart of a method for evaluating a fireproof partition of a power transmission line according to an embodiment of the present invention;

[0019] Figure 2 is a flow chart of a method for evaluating failure period of thermal insulation performance degradation of fireproof partitions in a cable tunnel according to an embodiment of the present invention;

[0020] Figure 3 is a schematic diagram of an aging treatment of a thermal insulation performance test sample according to an embodiment of the present invention;

[0021] Figure 4 is a schematic diagram of a combustion process of a cable intermediate joint according to an embodiment of the present invention;

[0022] Figure 5 is a schematic diagram of a thermocouple arrangement according to an embodiment of the present invention;

[0023] Figure 6 is a schematic diagram of a thermal insulation performance test according to an embodiment of the present invention;

[0024] Figure 7 is a schematic diagram of temperature changes at an upper partition when cables of different voltage levels burn according to an embodiment of the present invention;

[0025] Figure 8 is a schematic diagram of a fitting curve of a thermal insulation performance attenuation law according to an embodiment of the present invention;

[0026] Fig. 9 is a schematic diagram of a fire extinguishing device and thermocouple arrangement in a cable tunnel according to an embodiment of the present invention;

[0027] Fig.10 is a schematic diagram of an impact strength life attenuation curve of a fireproof partition according to an embodiment of the present invention;

[0028] Fig.11 is a schematic diagram of a failure cycle based on the thermal insulation performance of a fireproof partition according to an embodiment of the present invention;

[0029] Fig.12 is a schematic diagram of a bending strength life attenuation curve of a fireproof partition according to an embodiment of the present invention;

[0030] Fig.13 is a schematic diagram of a time axis diagram of failure cycles of various performances according to an embodiment of the present invention;

[0031] Fig.14 is a schematic structural diagram of an evaluation device for a fireproof partition of a power transmission line according to an embodiment of the present invention;

[0032] Fig.15 Schematic diagram of an electronic device for a method for evaluating a fireproof partition of a power transmission line according to an embodiment of the present invention. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] Example 1

[0036] According to an embodiment of the present invention, an embodiment of a method for evaluating fire partitions of a transmission line is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0037] Figure 1 is a flow chart of a method for evaluating a fireproof partition of a power transmission line according to an embodiment of the present invention, such as Figure 1 As shown, the method comprises the following steps:

[0038] Step S102, obtaining environmental information of the fireproof partitions of the power transmission line.

[0039] In the technical solution provided in the above step S102 of the present invention, the environmental information can be used to indicate the influence of the temperature and humidity of the environment in which the fireproof partition is located on the aging condition of the fireproof partition.

[0040] Optionally, the temperature and humidity of the environment in which the fireproof partition is located can be obtained by a sensor. The temperature and humidity of the environment in which the fireproof partition is located can include the temperature and humidity of the environment in which the fireproof partition is located, and the above-mentioned sensor can include a temperature sensor and a humidity sensor. The temperature sensor can be used to detect the temperature of the environment in which the fireproof partition is located, and the humidity sensor can be used to detect the humidity of the environment in which the fireproof partition is located.

[0041] It should be noted that the content and acquisition method of the temperature and humidity of the environment in which the fireproof partition is located are only for illustration and are not specifically limited here. As long as it can be used to obtain environmental information for measuring the aging condition of the fireproof partition, as well as the method and equipment for obtaining the environmental information, they are all within the protection scope of the embodiments of the present invention.

[0042] Optionally, after obtaining the environmental information, the aging condition of the fireproof partition under the actual environmental conditions can be quantified by the environmental acceleration factor and the environmental information, so as to determine the degree of influence of the environmental information on the aging condition of the fireproof partition. It is of great significance to predict the life of the fireproof partition, identify the aging condition of the fireproof partition, and whether the thermal insulation performance of the fireproof partition under the aging condition meets the safety standards, and formulate maintenance strategies, and it can ensure that the fireproof partition can maintain the due safety performance under various environmental conditions. Among them, the environmental acceleration factor is a parameter used to describe the degree of influence of the aging condition of the fireproof partition.

[0043] Optionally, the environmental information collected by the above method, such as the temperature and humidity of the environment in which the fireproof partition is located, and other factors that may affect the aging condition, such as light, chemical exposure, mechanical conditions, etc., and the calculated environmental acceleration factor, can establish an equivalent relationship between the natural aging and the hygrothermal aging of the fireproof partition. By collecting and analyzing environmental information, the aging condition and thermal insulation performance changes of the fireproof partition in a specific environment can be evaluated, so that corresponding maintenance and replacement measures can be taken to ensure the safe operation of the transmission line where the fireproof partition is located.

[0044] Step S104: determining a first test strategy for the fireproof partition based on the environmental information.

[0045] In the technical solution provided in the above step S104 of the present invention, after obtaining the environmental information of the fireproof partition of the transmission line, a first test strategy for the fireproof partition can be determined based on the environmental information. The first test strategy is used to represent the rules for testing the thermal insulation performance under different aging conditions, and can be used to test the aging cycles corresponding to different aging conditions.

[0046] In this embodiment, based on the environmental information, a first test strategy for the fireproof partition can be determined, and the first test strategy can evaluate the thermal insulation performance of the fireproof partition under different aging conditions to ensure that the safety standards can be met within the expected service life of the fireproof partition.

[0047] Optionally, the thermal insulation performance under different aging conditions may be tested for a plurality of different aging cycles to verify whether the thermal insulation performance of the fireproof partitions in each aging cycle still meets the safety standards and confirm the performance degradation trend of the fireproof partitions, thereby ensuring that the fireproof partitions can provide the necessary protection throughout their service life.

[0048] Step S106: Perform a fire test on the fireproof partition according to the first test strategy to obtain a first test result.

[0049] In the technical solution provided in the above step S106 of the present invention, after determining the first test strategy for the fireproof partition based on the environmental information, the fireproof partition can be subjected to a fire test according to the first test strategy to obtain a first test result. The first test result can be a fitting curve of the thermal insulation performance attenuation law, which can be used to indicate the change trend of the thermal insulation performance of the fireproof partition with the aging condition.

[0050] In this embodiment, a thermal insulation performance testing platform can be built, and fire tests can be carried out on fireproof partitions with different aging cycles to obtain a fitting curve of the thermal insulation performance attenuation law. The thermal insulation performance testing platform is a system or equipment specially designed to measure and evaluate the thermal insulation performance of fireproof partitions, which can include a series of high-precision testing instruments and standardized testing procedures, and can provide accurate and repeatable test results. The safety of fireproof partitions in practical applications can be ensured, especially in the evaluation of the thermal insulation performance of fireproof partitions. Through this thermal insulation performance testing platform, the thermal insulation performance of fireproof partitions can be evaluated. Real combustion tests can be carried out, and by simulating actual fire conditions, data in complex fire environments that cannot be fully replicated by laboratory simulation tests can be provided, providing a direct and effective means for evaluating thermal insulation performance.

[0051] Optionally, specific conditions for the fire test may be determined based on the rules defined in the first test strategy, such as the type of fire source, temperature, duration, and aging condition of the fire partitions prior to the fire test. The test conditions should correspond to the aging condition of the environment in which the fire partitions are located, and the fire performance under the actual aging cycle may be verified. In a laboratory environment, standardized fire test equipment may be used, such as a furnace or a thermal radiation source, and the fire partitions may be subjected to fire tests according to predetermined test conditions. Fire partitions may be subjected to direct flame combustion tests to evaluate their thermal insulation performance indicators such as fire protection time, smoke emissions, and flame spread rate.

[0052] Step S108, determining an evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance fails.

[0053] In the technical solution provided in the above step S108 of the present invention, after the fire test is performed on the fireproof partition according to the first test strategy and the first test result is obtained, the evaluation result of the thermal insulation performance can be determined based on the thermal insulation time of the fireproof partition in the first test result. The thermal insulation time can be the heat resistance time. The evaluation result is used to indicate whether the thermal insulation performance is invalid.

[0054] In this embodiment, the heat-resistant time of the fireproof partition can be obtained according to the fitting curve of the thermal insulation performance attenuation law, thereby effectively preventing the heat from being transferred to the power transmission line inside the cable tunnel. The heat-resistant time can be compared with the action time of the fire extinguishing device in the cable tunnel to determine whether the thermal insulation performance of the fireproof partition has failed. Among them, the action time of the fire extinguishing device in the cable tunnel can be the time from fire detection to the fire extinguishing system starting to spray water or release fire extinguishing agent.

[0055] Alternatively, if the heat-resistant time of the fireproof partition is shorter than the action time of the fire extinguishing device, or the heat-resistant time cannot meet the safety standard under unfavorable aging conditions, it can be said that the heat insulation performance of the fireproof partition has failed or is about to fail, that is, in the event of a fire, the fireproof partition may not provide sufficient protection time for personnel and equipment in the cable tunnel. By comparing the heat-resistant time of the fireproof partition with the action time of the fire extinguishing device in the cable tunnel, the safety performance of the fireproof partition throughout its service life can be effectively predicted and evaluated.

[0056] In the above steps S102 to S108 of the present application, if it is necessary to evaluate the performance of the fireproof partitions in the cable tunnel, the environmental information of the fireproof partitions of the transmission line can be obtained, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partitions are located, and the degree of influence on the aging condition of the fireproof partitions; based on the environmental information, a first test strategy for the fireproof partitions can be determined, wherein the first test strategy is used to indicate the rules for testing the thermal insulation performance under different aging conditions; according to the first test strategy, a fire test can be performed on the fireproof partitions to obtain a first test result; based on the thermal insulation time of the fireproof partitions in the first test result, an evaluation result of the thermal insulation performance can be determined, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed. In this embodiment, environmental information of the fireproof partitions of the transmission line is obtained, and based on the environmental information, a fire test is performed on the fireproof partitions in accordance with the rules for testing the thermal insulation performance under different aging conditions. Based on the thermal insulation time of the fireproof partitions in the test results, it is determined whether the thermal insulation performance has failed, thereby achieving the technical effect of improving the evaluation accuracy of the fireproof partitions and solving the technical problem of low evaluation accuracy of the fireproof partitions.

[0057] The embodiment of the present invention is described in detail below in combination with the above steps.

[0058] As an optional embodiment, the method also includes: determining a second test strategy for testing the strength performance of the fireproof partition based on environmental information, wherein the second test strategy is a rule for testing the strength performance under different aging conditions; testing the fireproof partition according to the second test strategy to obtain a second test result; and determining an evaluation result of the strength performance based on the second test result, wherein the evaluation result of the strength performance is used to indicate whether the strength performance has failed.

[0059] In this embodiment, a second test strategy for testing the strength performance of the fireproof partition can be determined based on the environmental information, wherein the second test strategy is a rule for testing the strength performance under different aging conditions; the fireproof partition can be tested according to the second test strategy to obtain a second test result; and the evaluation result of the strength performance can be determined based on the second test result. The evaluation result of the strength performance is used to indicate whether the strength performance has failed, and can be a mechanical property. The second test result can be a test result of dry bending strength, average water absorption saturated bending strength, and average impact strength.

[0060] Optionally, by identifying aging factors that affect the strength performance of fireproof partitions, such as temperature cycles, humidity changes, ultraviolet radiation, corrosive gases, etc., and based on the known aging factors, test parameters simulating real environmental conditions can be set to determine the time points for conducting strength performance tests on fireproof partitions under each aging condition, as well as test items that are critical to the strength performance of fireproof partitions, such as dry flexural strength, average flexural strength after water absorption saturation, average impact strength, etc.

[0061] Optionally, the bending strength and impact strength performance tests are performed on the fireproof partitions of different aging cycles to obtain the test results of dry bending strength, average water absorption saturated bending strength and average impact strength. According to the second test results, the impact performance and bending performance attenuation model of the fireproof partition can be determined, and according to the performance attenuation curve and the impact performance and bending performance failure thresholds of the fireproof partition, the failure cycle of the fireproof partition can be obtained.

[0062] For example, the change in the strength of a fire barrier due to the aging process can be described by the following formula:

[0063] S=S 0 +η[1-e (-λt) ]-βln(1+αt)

[0064] Among them, S can represent the residual strength of the composite material used to make fireproof partitions after aging for t hours, in MPa; S0 It can represent the initial strength of the composite material used to make fireproof partitions; η can represent the curing degree parameter of the composite material used to make fireproof partitions; β can represent the resistance parameter of the composite material used to make fireproof partitions to crack propagation; λ can represent the composite material used to make fireproof partitions and external environment parameters; α can represent the external environment erosion coefficient; t can represent the aging time.

[0065] In the embodiment of the present invention, the second test strategy and strength performance evaluation of the fireproof partition can determine whether the strength performance of the fireproof partition under different aging conditions is still reliable. Through testing and analysis, problems can be discovered and solved in a timely manner, ensuring that important structures such as cable tunnels can still maintain safety and functionality in fire or emergency situations.

[0066] As an optional embodiment, the strength performance includes at least one of the following: dry bending strength performance, impact strength performance and water-saturated bending strength performance, wherein, based on the environmental information, a second test strategy for testing the strength performance of the fire partition is determined, including: based on the environmental information, determining the flat bending strength data, water-saturated bending strength data and / or impact strength data under different aging cycles of the fire partition; determining the second test strategy corresponding to different aging cycles, different flat bending strength data, different water-saturated bending strength data and different impact strength data.

[0067] In this embodiment, based on the environmental information, under different aging cycles of the fireproof partition, flat bending strength data, water absorption saturated bending strength data and / or impact strength data can be determined; the second test strategy corresponding to different aging cycles, different flat bending strength data, different water absorption saturated bending strength data and different impact strength data can be determined. Among them, the flat bending strength data can be the average value of the dry bending strength. The water absorption saturated bending strength data can be the average value of the water absorption saturated bending strength. The impact strength data can be the average value of the impact strength.

[0068] Optionally, the average dry bending strength, average water saturated bending strength and average impact strength of the fireproof partition under different aging cycles can be obtained by performing bending strength and impact strength tests using a universal testing machine and an impact tester. The above strength acquisition method is only for illustration and is not specifically limited here. Any method that can be used to obtain the strength performance of the fireproof partition is within the protection scope of the embodiments of the present invention.

[0069] In the embodiment of the present invention, the second test strategy can comprehensively evaluate the changes in the strength performance of the fireproof partition under different aging conditions, and provide a basis for preventive maintenance and safety evaluation of the fireproof partition. The second test strategy can not only identify potential performance degradation, but also guide the optimal design of the fireproof partition and the material selection of the fireproof partition to enhance the long-term strength and fire resistance of the fireproof partition.

[0070] As an optional embodiment, based on the second test result, determining the evaluation result of the strength performance, including: in response to the evaluation result of the strength performance being strength performance failure, determining the bending performance failure cycle and the impact performance failure cycle of the fireproof partition; the method also includes: in response to the evaluation result of the thermal insulation performance being thermal insulation performance failure, determining the thermal insulation performance failure cycle of the fireproof partition; and determining the minimum value among the bending performance failure cycle, the impact performance failure cycle and the thermal insulation performance failure cycle as the failure cycle of the fireproof partition.

[0071] In this embodiment, when the evaluation result of the strength performance is determined based on the second test result, the bending performance failure cycle and the impact performance failure cycle of the fireproof partition can be determined when the evaluation result of the strength performance is a failure of the strength performance. When the evaluation result of the thermal insulation performance is a failure of the thermal insulation performance, the thermal insulation performance failure cycle of the fireproof partition can be determined. The minimum value among the bending performance failure cycle, the impact performance failure cycle, and the thermal insulation performance failure cycle can be determined as the failure cycle of the fireproof partition.

[0072] Optionally, by comprehensively comparing the obtained failure cycles of the heat insulation performance, bending performance, and impact performance of the fireproof partitions, the failure cycles of the cable tunnel fireproof partitions of different voltage levels can be determined. For example, the minimum failure cycle of the three failure cycles can be used as the failure cycle of the fireproof partition.

[0073] In the embodiment of the present invention, the heat-resistance time of the corresponding fireproof partition can be obtained according to the fitting curve of the heat insulation performance attenuation law. By comparing the heat-resistance time with the action time of the fire extinguishing device in the cable tunnel, it can be judged whether the heat insulation performance of the fireproof partition fails, so as to determine the heat insulation performance failure cycle of the fireproof partition.

[0074] As an optional embodiment, obtaining environmental information of fireproof partitions of transmission lines includes: obtaining temperature data and humidity data of the environment in which the fireproof partitions are located, wherein the temperature data includes accelerated aging temperature and natural aging temperature; and determining environmental information based on the accelerated aging temperature, natural aging temperature and humidity data.

[0075] In this embodiment, when obtaining the environmental information of the fireproof partition of the transmission line, the temperature data and humidity data of the environment in which the fireproof partition is located can be obtained, and the environmental information can be determined based on the accelerated aging temperature, the natural aging temperature and the humidity data. The temperature data may include the accelerated aging temperature and the natural aging temperature, for example, the temperature and humidity data of the cable tunnel line throughout the year.

[0076] Alternatively, accelerated aging temperatures in simulated environmental conditions can be used to predict the behavior of fire barriers under normal use conditions. Natural aging temperatures are the average temperatures to which fire barriers are exposed under natural environmental conditions. Humidity data can be used to evaluate the performance and durability of fire barriers under different humidity conditions.

[0077] For example, the equivalent relationship between natural aging and damp heat aging can be established based on the environmental acceleration factor to determine the environmental information. The calculation of the environmental acceleration factor can be determined by the following formula:

[0078]

[0079] Where K can represent the environmental acceleration factor; t 1 Can represent the natural aging time in h; t 2 It can express the accelerated aging time in h; T 1 , They can represent the natural aging temperature and relative humidity, in units of ℃ and % respectively; T 2 , They can represent accelerated aging temperature and relative humidity, in units of ℃ and %.

[0080] As an optional embodiment, step S104, based on environmental information, determines a first test strategy for testing the thermal insulation performance of the fireproof partition, including: determining an aging cycle of the fire test based on the environmental information; and formulating a corresponding first test strategy based on different aging cycles.

[0081] In this embodiment, in the process of determining the first test strategy for testing the thermal insulation performance of the fireproof partition based on environmental information, the aging cycle of the fire test can be determined based on the environmental information, and the corresponding first test strategy can be formulated based on different aging cycles.

[0082] Optionally, based on environmental information, the fireproof partitions are tested for multiple different aging cycles and multiple different corresponding first test strategies are formulated to ensure the pertinence and effectiveness of the fire test, thereby improving the accuracy of the thermal insulation performance evaluation of the fireproof partitions, which is of great significance for preventive maintenance, timely replacement and ensuring the fire safety of transmission lines.

[0083] As an optional embodiment, the first test result includes an attenuation fitting curve of thermal insulation performance, wherein, according to the first test strategy, a fire test is performed on the fireproof partition to obtain the first test result, including: building a combustion platform corresponding to the fireproof partition to simulate the fire conditions of the transmission line under different voltage levels; based on the combustion platform, obtaining the temperature data that the fireproof partition is subjected to under the fire condition; based on the temperature data, building a fire test platform for performing a fire test on the fireproof partition; using the fire test platform, calling the first test strategies corresponding to different aging cycles, performing a fire test on the fireproof partition, and obtaining the corresponding attenuation fitting curve of thermal insulation performance.

[0084] In this embodiment, in the process of performing a fire test on the fireproof partition in the first test strategy and obtaining the first test result, a combustion platform corresponding to the fireproof partition can be built to simulate the fire conditions of the transmission line at different voltage levels; based on the combustion platform, the temperature data that the fireproof partition is subjected to under the fire condition can be obtained; based on the temperature data, a fire test platform for performing a fire test on the fireproof partition can be built; the fire test platform can be used to call the first test strategy corresponding to different aging cycles, perform a fire test on the fireproof partition, and obtain the corresponding thermal insulation performance attenuation fitting curve. Among them, the first test result may include the thermal insulation performance attenuation fitting curve. The combustion platform can be a real combustion experimental platform. The transmission line can be a cable intermediate joint. The temperature data can be an equivalent detection temperature. The fire test platform can be a thermal insulation performance detection platform. The attenuation fitting curve can be a thermal insulation performance attenuation law fitting curve.

[0085] Optionally, by building a cable tunnel model test platform, setting a certain power fire source, igniting the intermediate joints of cables of different voltage levels, and removing the fire source after the intermediate joints of the cables are ignited, so that they burn autonomously, the temperature curve of the partition placed above the fire source can be obtained. The temperature at the partition in the stable stage can be used as the equivalent detection temperature of the thermal insulation performance of the aged fireproof partition. By building a thermal insulation performance detection platform and conducting fire tests on fireproof partitions with different aging cycles, a fitting curve of the thermal insulation performance attenuation law can be obtained to ensure the safety of the cable tunnel under fire conditions.

[0086] In an embodiment of the present invention, if it is necessary to evaluate the performance of the fireproof partition of the cable tunnel, the environmental information of the fireproof partition of the transmission line can be obtained, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partition is located, and the degree of influence on the aging condition of the fireproof partition; based on the environmental information, a first test strategy for the fireproof partition can be determined, wherein the first test strategy is used to indicate the rule for testing the thermal insulation performance under different aging conditions; the fireproof partition can be subjected to a fire test according to the first test strategy to obtain a first test result; the evaluation result of the thermal insulation performance can be determined based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed. In this embodiment, by obtaining the environmental information of the fireproof partition of the transmission line, the fireproof partition is subjected to a fire test according to the rule for testing the thermal insulation performance under different aging conditions based on the environmental information, and whether the thermal insulation performance has failed is determined according to the thermal insulation time of the fireproof partition in the test result, thereby achieving the technical effect of improving the evaluation accuracy of the fireproof partition and solving the technical problem of low evaluation accuracy of the fireproof partition.

[0087] Example 2

[0088] Another optional specific implementation is described in detail below.

[0089] At present, cable tunnels are an important part of urban infrastructure, carrying a large number of power and communication lines. With the increase of service life, the fireproof partitions in the cable tunnel may be damaged, which not only affects the safety and stability of the cables, but also may cause serious accidents such as fire. Therefore, conducting a study on the failure cycle of fireproof partitions in cable tunnels is crucial to ensure the safe operation of cable tunnels.

[0090] In the related art, organic fireproof partitions may be ignited in a fire and cannot play a fireproof role. At the same time, the mechanical properties of the fireproof partitions will be reduced in the high temperature environment of the fire. However, in conventional combustion tests, the experimental flame temperature cannot reach the flame temperature of a real fire, so it cannot reflect the changes in the thermal insulation properties of the fireproof partitions after aging. In actual fire accidents, there are fireproof partitions with intact mechanical properties but poor thermal insulation properties. Since the fire extinguisher in the cable tunnel needs to reach the specified temperature and then delay for a period of time before it can be activated, before the fire extinguisher is activated, although the mechanical properties of the fireproof partition are normal, the cables above have been damaged due to the high temperature.

[0091] The present invention proposes a method for evaluating the failure period of thermal insulation performance degradation of fireproof partitions in operation in cable tunnels. The method can obtain environmental information of fireproof partitions of transmission lines, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partitions are located, and the degree of influence on the aging condition of the fireproof partitions; based on the environmental information, determine the first test strategy of the fireproof partitions, wherein the first test strategy is used to indicate the rules for testing the thermal insulation performance under different aging conditions; according to the first test strategy, perform a fire test on the fireproof partitions to obtain a first test result; based on the thermal insulation time of the fireproof partitions in the first test result, determine the evaluation result of the thermal insulation performance, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed, thereby achieving the technical effect of improving the evaluation accuracy of the fireproof partitions and solving the technical problem of low evaluation accuracy of the fireproof partitions.

[0092] The method is further described below.

[0093] In this embodiment, Figure 2 : is a flow chart of a method for evaluating the failure period of thermal insulation degradation of fireproof partitions in cable tunnels in operation according to an embodiment of the present invention. Figure 2 As shown, the method may include the following steps:

[0094] Step S202, establishing an equivalent relationship between natural aging and wet heat aging, and performing aging tests of different cycles on the fireproof partition.

[0095] In the technical solution provided in the above step S202 of the present invention, the temperature and humidity data of the cable tunnel line throughout the year can be measured by the temperature and humidity monitor in the actual cable tunnel. The temperature and humidity data can be used to establish the equivalent relationship between natural aging and wet heat aging in combination with the environmental acceleration factor, and the accelerated aging time corresponding to different natural aging times can be obtained, and the fireproof partition can be subjected to aging tests of different cycles.

[0096] Optionally, an equivalent relationship between natural aging and damp heat aging can be established based on the environmental acceleration factor. The environmental acceleration factor can be determined by the following formula:

[0097]

[0098] Where K can represent the environmental acceleration factor; t 1 Can represent the natural aging time in h; t 2 It can represent the accelerated aging time in h; T 1 , It can express the natural aging temperature and relative humidity in ℃ and % respectively; T 2 , It can represent accelerated aging temperature and relative humidity in units of ℃ and % respectively; C can represent the test coefficient.

[0099] Optionally, when the fireproof partition is subjected to aging tests of different cycles, a aging chamber with a size of L can be prepared according to the size of the aging chamber. part *W part *H part The organic molded fireproof partition samples were tested with multiple different aging cycles.

[0100] Step S204, determining the equivalent detection temperature.

[0101] In the technical solution provided in the above step S204 of the present invention, a cable tunnel model test platform can be built, the fire source power can be set, the intermediate joints of cables of different voltage levels can be ignited, and the fire source can be removed after the intermediate joints of the cables are ignited to make them burn autonomously, and the temperature curve of the partition placed above the fire source can be obtained. The temperature at the partition in the stable stage can be used as the equivalent detection temperature of the thermal insulation performance of the aged fireproof partition.

[0102] Optionally, a test platform can be built to place the cable intermediate joint, thermal couple and ignition device at the specified location. fire The burner ignites the cable joint, and after ignition, the fire source is removed. Thermocouples can be arranged to collect the temperature at the partition just above the fire source to obtain a temperature curve. The temperature at the partition during the stable stage of combustion of the cable joints of different voltage levels can be used as the equivalent detection temperature of the degradation performance of the aged fireproof partition.

[0103] Optionally, a propane burner can be used to simulate an external fire source to ignite the cable. A certain power fire source can be set to ignite the cable middle joint. After the cable middle joint is ignited, the fire source is removed to allow it to burn autonomously. The cable middle joint can be L m long, D cm in diameter, and the ignition device can be L in size. 1 m×L 2 m, place a propane burner under the middle joint of the cable, which can be ignited by a remote ignition device, and the ignition power can be W fire kW. The cable tunnel can be opened on both sides to ensure the oxygen supply when the cable middle joint is burning. When the fire temperature is too high, in order to obtain the temperature change of the characteristic point, a thermocouple can be used for temperature collection, and the thermocouple can be arranged above the cable middle joint.

[0104] Step S206, building a thermal insulation performance testing platform and determining a fitting curve of the thermal insulation performance attenuation law.

[0105] In the technical solution provided in step S206 of the present invention, a thermal insulation performance testing platform can be built to conduct fire tests on fireproof partitions of different aging cycles to obtain a fitting curve of the thermal insulation performance attenuation law. The thermal insulation performance testing platform can include a cable bracket, a thermocouple, a fireproof partition, a flame spray gun, and an acrylic box.

[0106] Optionally, test equipment can be placed on the cable bracket, and a propane spray gun can be placed on the bottom layer of the cable bracket to simulate a fire at the middle joint of the cable, and the fireproof partition sample can be placed on the second layer of the cable bracket. Several K-type thermocouples and patch thermocouples can be arranged on the upper and lower surfaces of the fireproof partition. Select fireproof partitions with different aging cycles and place them on the second layer of the bracket. Adjust the air outlet knob of the propane spray gun several times to control the air outlet volume, so that the temperature at the place where the fireproof partition is placed can be maintained at the equivalent detection temperature. In order to prevent heat loss in the temperature measurement area and cause the temperature to drop, a transparent acrylic box can be used to isolate the test platform from the external environment. After the test platform is built, a fire test of the fireproof partition is carried out to obtain the tolerance time of the fireproof partition samples with different aging cycles, and draw a fitting curve of the thermal insulation performance attenuation law.

[0107] Step S208, determining the failure period of the thermal insulation performance of the fireproof partition.

[0108] In the technical solution provided in the above step S208 of the present invention, the heat-resistance time of the corresponding fireproof partition can be obtained according to the fitting curve of the heat insulation performance attenuation law. By comparing the heat-resistance time with the action time of the fire extinguishing device in the cable tunnel, it can be judged whether the heat insulation performance of the fireproof partition fails, thereby determining the heat insulation performance failure cycle of the fireproof partition.

[0109] Optionally, when an actual cable tunnel fire occurs, the fireproof partition can control the back-fire surface temperature within the pyrolysis temperature of the cable outer sheath before the fire extinguishing device is activated, and the thermal insulation performance of the fireproof partition meets the protection requirements of cable fires in cable tunnels. A typical layout of a cable tunnel can be established, and the fire extinguishing device in the cable tunnel can be tested, and the fire source power can be set according to the combustion power of the intermediate joints of cables of different voltage levels. The time from the start of the test to the temperature-sensitive glass ball reaching T℃ for each fire extinguishing device can be recorded, and T℃ can be the starting temperature of the fire extinguishing device. The action time of the fire extinguishing device can be compared with the heat-resistant time of the fireproof partition to determine whether the thermal insulation performance of the fireproof partition has failed. Combined with the fitting curve of the thermal insulation performance attenuation law of fireproof partitions with different aging cycles, the thermal insulation performance failure cycle of fireproof partitions in cable tunnels of different voltage levels can be obtained.

[0110] Step S210, determining the test results of dry bending strength, average water-saturated bending strength and average impact strength.

[0111] In the technical solution provided in the above step S210 of the present invention, the bending strength and impact strength performance tests can be performed on the fireproof partitions of different aging cycles to obtain the test results of dry bending strength, average water-saturated bending strength and average impact strength.

[0112] Optionally, the fireproof partition specimens are cut into L-dimensions by a CNC cutting machine.1 *W 1 mm, L 2 *W 2 The number of test specimens of mm is m and n respectively, and the bending strength and impact strength performance tests are carried out using a universal testing machine and an impact tester, and the average dry bending strength, average water-saturated bending strength and average impact strength of the samples of each cycle can be obtained. Table 1 is a corresponding relationship table of an accelerated aging cycle and the average values ​​of each strength according to an embodiment of the present invention. As shown in Table 1, under different accelerated aging cycles, different average values ​​of dry bending strength, water-saturated bending strength and average impact strength can be obtained.

[0113] Table 1 Correspondence between accelerated aging cycle and average value of each strength

[0114]

[0115] Step S212, determining the failure period of the mechanical properties of the fireproof partition.

[0116] In the technical solution provided in the above step S212 of the present invention, the impact performance and bending performance attenuation model of the fireproof partition is determined according to the test results, and the performance attenuation curve is drawn. The failure period of the fireproof partition can be obtained according to the performance attenuation curve and the impact performance and bending performance failure thresholds of the fireproof partition.

[0117] For example, the change in the strength of a fire barrier due to the aging process can be described by the following formula:

[0118] S=S 0 +η[1-e (-λt) ]-βln(1+αt)

[0119] Among them, S can represent the residual strength of the composite material used to make fireproof partitions after aging for t hours, in MPa; S 0 It can represent the initial strength of the composite material used to make fireproof partitions; η can represent the curing degree parameter of the composite material used to make fireproof partitions; β can represent the resistance parameter of the composite material used to make fireproof partitions to crack propagation; λ can represent the composite material used to make fireproof partitions and external environment parameters; α can represent the external environment erosion coefficient; t can represent the aging time.

[0120] Optionally, according to the relevant data of the mechanical property test in the wet heat aging test, the parameters η, β, λ, α are determined by calculation, and the environmental acceleration factor is used to calculate the actual service life of the fireproof partition based on the mechanical property decay law. After establishing the impact performance and bending performance decay model of the fireproof partition, the performance decay curve can be drawn, and the failure cycle of the fireproof partition can be obtained according to the performance decay curve and the impact performance and bending performance failure thresholds of the fireproof partition.

[0121] Step S214, determining the failure period of cable tunnel fire partitions of different voltage levels.

[0122] In the technical solution provided in the above step S214 of the present invention, the failure cycles of cable tunnel fire partitions of different voltage levels can be determined by comprehensively comparing the obtained thermal insulation performance failure cycles and mechanical performance failure cycles.

[0123] Optionally, the thermal insulation performance failure cycle, bending performance failure cycle, and impact performance failure cycle of the cable tunnel fireproof partitions at different voltage levels are compared respectively, and the minimum failure cycle of the three failure cycles can be taken as the cable failure cycle at that voltage level.

[0124] In the embodiment of the present invention, the equivalent relationship between natural aging and wet heat aging can be established according to the environmental acceleration factor; the equivalent detection temperature of the degradation performance of the fireproof partition can be obtained according to the real combustion test of the intermediate joint of the cable at different voltage levels; by building an equivalent detection platform for the degradation of the thermal insulation performance of the fireproof partition, the thermal insulation performance detection test is carried out on the fireproof partitions of different voltage levels and different aging cycles, and the degradation of the thermal insulation performance of the fireproof partition under different aging cycles can be obtained; according to the statistical law of the action time of the fire extinguishing device in the actual tunnel use scenario, the failure cycle based on the thermal insulation performance of the fireproof partition can be obtained; the failure cycle of the fireproof partition based on the mechanical performance can be calculated according to the residual strength model based on the mechanical performance test data. By comprehensively considering the mechanical properties and thermal insulation performance of the fireproof partition, the failure cycle of the cable tunnel fireproof partition of different voltage levels can be determined, thereby achieving the technical effect of improving the evaluation accuracy of the fireproof partition and solving the technical problem of low evaluation accuracy of the fireproof partition.

[0125] The present invention is further described in detail below by taking the quantification method of the thermal insulation performance of the aged fireproof partition as an example:

[0126] In this embodiment, the environmental acceleration factor can be used to establish the correspondence between accelerated aging and natural aging, and the fireproof partition can be subjected to an aging test. After the aging is completed, by conducting a real combustion test on the intermediate joints of cables of different voltage levels, the temperature curve of the partition above the fire source can be obtained, and the temperature at the partition in the stable stage is used as the equivalent detection temperature of the degradation performance of the fireproof partition after aging. The aged fireproof partition can be subjected to a degradation test to obtain a fitting curve of the thermal insulation performance attenuation law. By combining the actual action time of the cable tunnel fire extinguishing device of different voltage levels, the thermal insulation performance failure cycle of the cable tunnel fireproof partition of different voltage levels can be obtained. Combined with conventional mechanical properties, the performance failure cycle of the fireproof partition can be obtained.

[0127] Optionally, by using the environmental acceleration factor formula, at T 2 When the temperature is >60℃, the test coefficient can be 81.47, and the calculated environmental acceleration factor can be 274.5, which can give the correspondence between natural aging and accelerated aging. Table 2 is a table of the correspondence between artificial accelerated aging and natural aging time in an embodiment of the present invention. As shown in Table 2, natural aging and accelerated aging are corresponded according to the environmental acceleration factor K. According to the size of the aging box, 24 groups of organic molded fireproof partition samples with a size of 350*350*5mm are prepared. After pretreatment of the samples, they can be placed flat on the partition in the constant temperature and humidity box.

[0128] Table 2 Correspondence between artificial accelerated aging and natural aging time

[0129] Accelerated aging time (days) Natural aging (years) 7 5.3 14 10.5 21 15.8 28 21 35 26.3

[0130] Figure 3 is a schematic diagram of an aging treatment of a thermal insulation performance test sample according to an embodiment of the present invention. Figure 3 As shown, the wet heat aging treatment is performed. Each aging cycle can be set to 7 days, and after each aging cycle, the sample corresponding to the cycle is taken out and tested for 5 cycles, and the test is stopped after the aging cycle is completed.

[0131] Figure 4 Schematic diagram of a burning process of a cable intermediate joint according to an embodiment of the present invention. Figure 4 As shown, real combustion tests can be carried out on the cable intermediate joints at 220kV, 110kV and 35kV voltage levels. The 220kV cable intermediate joint is 1.9m long and 24cm in diameter, the 110kV cable intermediate joint is 1.6m long and 13cm in diameter, the 35kV cable intermediate joint is 1m long and 7cm in diameter, and the ignition device size is 0.5m×0.5m.

[0132] Figure 5 is a schematic diagram of a thermocouple arrangement according to an embodiment of the present invention, such as Figure 5 As shown, thermocouples are arranged to collect the temperature at the partition above the fire source. The burner ignition power is 400kW. After the cable intermediate joint is ignited, the burner is turned off and allowed to burn autonomously. The temperature curve of the partition directly above the intermediate joint of the cable with different voltage levels is obtained when it burns. The temperature at the partition in the stable stage can be used as the equivalent detection temperature of the degradation performance of the fireproof partition after aging.

[0133] Figure 6 is a schematic diagram of a thermal insulation performance test according to an embodiment of the present invention, such as Figure 6 As shown, a thermal insulation performance testing platform is built according to the size of the fireproof partition sample to carry out thermal insulation performance testing. Figure 7 Schematic diagram of temperature change at the upper partition when a cable of different voltage levels burns according to an embodiment of the present invention. Figure 7 As shown, the fireproof partition sample is placed on the second layer of cable support, and the propane spray gun is placed on the bottom support to simulate the fire of the middle joint of the bottom cable. Several K-type thermocouples and patch thermocouples are arranged on the upper and lower surfaces of the fireproof partition. The air outlet knob of the spray gun is adjusted several times to control the air outlet volume, so that the temperature at the place where the fireproof partition is placed can be maintained at the specified test temperature. In order to prevent the temperature from dropping due to heat loss in the temperature measurement area, a transparent acrylic box can be used to isolate the test platform from the external environment. The test conditions are kept consistent, the test environment temperature can be 25°C, and the relative humidity can be 58%.

[0134] Figure 8 is a schematic diagram of a fitting curve of a thermal insulation performance attenuation law according to an embodiment of the present invention, such as Figure 8 As shown, the pyrolysis temperature of the polyvinyl chloride material of the cable outer sheath is 120°C, and the cable is placed on the back-fire surface of the fireproof partition, and the time when the back-fire surface of the fireproof partition reaches 120°C is taken as the tolerance time of the partition. Table 3 is an analysis table of the thermal insulation performance of the partition after aging in an embodiment of the present invention. As shown in Table 3, different aging cycles correspond to different tolerance times. The average tolerance time of the back-fire surface of each group of fireproof partitions with different aging cycles in Table 3 is nonlinearly fitted, and the actual use time of the fireproof partition is calculated based on the environmental acceleration factor, and a fitting curve of the thermal insulation performance attenuation law can be obtained.

[0135] Table 3 Analysis of thermal insulation performance of partitions after aging

[0136] Aging cycle The first group of tolerance time / s The second group tolerance time / s The third group tolerance time / s 0 229 320 564 1 204 287 50 2 185 244 462 3 160 212 421 4 154 203 371 5 152 189 353

[0137] Fig. 9 Schematic diagram of a fire extinguishing device and thermocouple arrangement in a cable tunnel according to an embodiment of the present invention, Fig. 9As shown in the figure, when a fire occurs in a cable tunnel, the fireproof partition can control the back-fire surface temperature within 120°C before the fire extinguishing device is activated, which means that the thermal insulation performance of the fireproof partition still meets the protection requirements for cable fires in cable tunnels. According to relevant national standards, it can be determined that after a fire occurs in a cable tunnel, when the temperature of the temperature-sensitive glass ball of the fire extinguishing device reaches 68°C, it will be delayed for 120 seconds and meet the national standards.

[0138] Optionally, the time when the temperature of the fire extinguishing device's temperature-sensitive glass ball reaches 68°C is t 1 , the delay time after the temperature of the fire extinguishing device temperature sensing glass ball reaches 68℃ is t 2 , because the delay time of the temperature-sensitive glass ball of different fire extinguishing devices is inconsistent, t 2 The specific value can be determined based on the actual statistical data of the fire extinguishing device in the cable tunnel. In the thermal insulation performance degradation test of the aged fireproof partition, the time for the back-fire surface temperature of the partition to reach 120°C is t 3 When the back-fire surface of the fireproof partition reaches 120°C, the test time does not reach the action time of the fire extinguishing device, and the thermal insulation performance of the fireproof partition does not meet the fire protection requirements in the cable tunnel. The thermal insulation performance failure criterion of the fireproof partition can be judged by the following formula:

[0139] t 1 +t 2 >t 3

[0140] Optionally, due to the different ambient temperatures in the cable tunnel at different times of the year, the time for the fire extinguishing bomb to reach 68°C is different. The action time of the 30 fire extinguishing devices sampled in the cable tunnel can be used as a case to evaluate and analyze the failure cycle of the fireproof partition in the cable tunnel. Among them, the components of the fire extinguishing device are relatively intact, and the 30 fire extinguishing devices sampled are subjected to a real combustion test, and the time from the start of the test to the temperature-sensitive glass ball reaching 68°C for each fire extinguishing device is recorded. The 30 fire extinguishing devices can be divided into three batches, and the fire source power can be set according to the combustion power of the intermediate joints of 220kV, 110kV and 35kV cables. The conditions such as the setting of the fire source and the arrangement of the fire extinguishing device are consistent for each batch of fire extinguishing device tests. At the same time, considering the influence of the ambient temperature on the relevant performance of the fire extinguishing device, the test can be carried out when the ambient temperature of the test site is about 25°C to 40°C from May to August. Table 4 is a first batch of fire extinguishing device action schedule in an embodiment of the present invention. As shown in Table 4, in the first batch, the time for the temperature-sensitive glass ball to reach 68°C for different fire extinguishing bombs is different.

[0141] Table 4 The first batch of fire extinguishing device operation schedule

[0142] Fire bomb serial number Time for the temperature-sensitive glass ball to reach 68°C / s 1 74 2 69 3 72 4 79 5 71 6 59 7 51 8 55 9 52 10 54

[0143] Table 5 is an action schedule of the second batch of fire extinguishing devices in an embodiment of the present invention. As shown in Table 5, in the second batch, the time for different fire extinguishing bombs to reach 68° C. is different.

[0144] Table 5 Action schedule of the second batch of fire extinguishing devices

[0145] Fire bomb serial number Time for the temperature-sensitive glass ball to reach 68°C / s 1 123 2 131 3 130 4 135 5 128 6 106 7 100 8 119 9 116 10 113

[0146] Table 6 Action schedule of the third batch of fire extinguishing devices

[0147] Fire bomb serial number Time for the temperature-sensitive glass ball to reach 68°C / s 1 306 2 290 3 295 4 309 5 292 6 260 7 267 8 262 9 279 10 266

[0148] Table 6 is the action timetable of the third batch of fire extinguishing devices in the embodiment of the present invention. As shown in Table 6, in the third batch, the time for different fire extinguishing bombs to reach 68° C. is different for the temperature-sensitive glass ball.

[0149] Optionally, the time from 68°C to the action of each fire extinguisher is different. Considering the most serious situation, that is, after the temperature of the fire extinguisher reaches 68°C, it takes 120 seconds to act. It can be obtained that the action time of the first batch of fire extinguishers is between 171s and 199s; the action time of the second batch of fire extinguishers is between 220s and 255s; and the action time of the third batch of fire extinguishers is between 380s and 429s.

[0150] Optionally, when the action time of the fire extinguishing device is equal to the time when the back-fire surface of the fireproof partition reaches 120°C, the critical service life of the fireproof partition can be obtained by combining the fitting curve of the thermal insulation performance attenuation law. The median can be used to represent the thermal insulation performance failure cycle of the fireproof partition. The minimum failure cycle corresponding to the maximum action time of 199s for the first batch of fire extinguishing devices is about 6.6 years, and the maximum failure cycle corresponding to the minimum action time of 171s for the fire extinguishing device is about 13.4 years. Therefore, according to the action time of the fire extinguishing device, the service life range of the 220kV cable tunnel fireproof partition based on thermal insulation performance is 6.6 to 13.4 years. The median action time of the first batch of fire extinguishing devices is 184s, and the corresponding thermal insulation performance failure cycle is about 10.1 years. Based on this method, the service life of the fireproof partitions in 110kV cable tunnels based on thermal insulation performance ranges from 9.2 to 15.1 years. According to the median of the action time of the second batch of fire extinguishing devices, 241s, the corresponding thermal insulation failure cycle is about 11.4 years; the service life of the fireproof partitions in 35kV cable tunnels based on thermal insulation performance ranges from 14.1 to 20.7 years. The median of the action time of the third batch of fire extinguishing devices is 404.5s, and the corresponding thermal insulation failure cycle is about 17.19 years.

[0151] Optionally, according to national standards and relevant test specifications, a CNC cutting machine can be used to cut the fireproof partition sample into 60 and 30 test specimens with a size of 110×15mm and 80×10mm, respectively, and a universal testing machine and an impact tester are used to perform bending strength and impact strength performance tests. Table 7 is a table of mechanical property test results of a fireproof partition in an embodiment of the present invention. As shown in Table 7, the test results of the average dry bending strength, average water-saturated bending strength and average impact strength of samples of different cycles are all different.

[0152] Table 7 Fireproof partition mechanical properties test results

[0153] Accelerated aging cycle 0 1 2 3 4 5 Average dry bending strength / MPa 140.8 110.5 87.6 83.9 83.2 68.9 Average water absorption saturated bending strength / MPa 112.2 94.1 85.2 80.4 78.9 64.8 <![CDATA[Average impact strength / KJ·m -2 > 72.4 57.2 49.1 45.6 45.1 41.9

[0154] Optionally, Table 8 is a parameter table of a fireproof partition impact performance and bending performance attenuation model with aging time in an embodiment of the present invention. As shown in Table 8, the impact performance and bending performance can change with the aging time attenuation model parameters, and the parameters can be substituted into S=S 0 +η[1-e (-λt) ]-βln(1+αt), the following formula for the change of impact performance and bending performance of fireproof partition with aging time is obtained:

[0155]

[0156] Among them, t 1 It can indicate the accelerated aging time of the fireproof partition under 95℃ and 95% aging condition, in h; S 1 It can indicate the impact strength of fireproof partitions after aging for a corresponding period of time at 95°C and 95% aging conditions, in kJ / m 2 ; S 2 It can express the flexural strength of the fireproof partition after the corresponding aging time under 95°C and 95% aging conditions, in MPa.

[0157] Table 8 Parameters of the model for the attenuation of the impact and bending properties of fireproof partitions with aging time

[0158] Model parameters <![CDATA[S 0 ]]> η β λ α Impact performance 72.4 77.6 690.1 9.7 0.06 Bending properties 140.8 141.7 56159.92 22.6 13.1

[0159] Fig.10 Schematic diagram of the impact strength life attenuation curve of a fireproof partition according to an embodiment of the present invention. Fig.10 As shown, after establishing the impact performance and bending performance attenuation model of the fireproof partition, the impact strength life attenuation curve can be drawn. Fig.11 is a schematic diagram of a failure cycle based on the thermal insulation performance of a fireproof partition according to an embodiment of the present invention, such as Fig.11As shown, according to the performance attenuation curve and the impact performance and bending performance failure thresholds of the fireproof partition, the failure cycle of the fireproof partition can be obtained.

[0160] Optionally, according to the technical requirements for the impact strength of fireproof partitions in the State Grid Corporation of China's corporate standard Q / GDW high-voltage cable and channel fire protection technical specifications, the impact strength should be 47kJ / m 2 However, when formulating the specification, a certain threshold will be reserved to prevent the aging of fireproof partitions, 47kJ / m 2 It is not the minimum value for the impact strength failure of the fireproof partition. When the strength performance of the composite material used for the fireproof partition reaches 77% of the design limit value, the fireproof partition is considered to have failed, that is, the actual impact strength of the fireproof partition is lower than 36.19 kJ / m 2 Failure after. Based on the environmental acceleration factor, the curves of the impact performance and bending performance of the fireproof partition changing with the aging time can be extrapolated to draw the impact strength life decay curve, and the failure period of the fireproof partition is determined to be 45.19 years. According to the technical requirements for the bending strength of fireproof partitions in the State Grid Corporation of China's corporate standard Q / GDW high-voltage cable and channel fire protection technical specifications, the bending strength can be above 110MPa, and the actual bending strength failure value is 84.7Mpa.

[0161] Fig.12 Schematic diagram of a bending strength life attenuation curve of a fireproof partition according to an embodiment of the present invention. Fig.12 As shown in the figure, the time taken for the artificial accelerated aging to the bending strength of the fireproof partition to drop to 84.7MPa is 481h. After 15.07 years of natural aging, the bending strength of the fireproof partition drops to 77% of the technical specification requirements. It is determined that the bending performance of the partition has failed at this time. Based on the bending strength of the fireproof partition, it can be determined that the failure period of the fireproof partition is 15.07 years.

[0162] Fig.13 is a schematic diagram of a time axis diagram of each performance failure cycle according to an embodiment of the present invention, such as Fig.13As shown in the figure, the failure periods of different performances of fireproof partitions in cable tunnels of different voltage levels correspond to different failure cycles. The failure period of thermal insulation performance of fireproof partitions in 220kV and 110kV cable tunnels is before the failure period determined by bending performance and impact performance, which indicates that the thermal insulation performance of fireproof partitions reaches the failure threshold first. Therefore, the actual service life of fireproof partitions in 220kV and 110kV cable tunnels can be determined by thermal insulation performance, and the service life in a cable tunnel environment with a temperature of 25°C and a humidity of 50% can be 10.1 years and 11.4 years respectively. The failure period of thermal insulation performance of fireproof partitions in 35kV cable tunnels can be 17.19 years, but the bending performance of fireproof partitions has failed before that. Therefore, the actual service life of fireproof partitions in 35kV cable tunnels can be determined by mechanical properties, and the service life in a cable tunnel environment with a temperature of 25°C and a humidity of 50% can be 15.07 years.

[0163] Example 3

[0164] The embodiment of the present invention provides an evaluation device for a fireproof partition of a power transmission line. It should be noted that the evaluation device for a fireproof partition of a power transmission line in the embodiment of the present invention can be used to perform Figure 1 The evaluation device for fireproof partitions of power transmission lines provided by the embodiment of the present invention is introduced below.

[0165] Fig.14 is a schematic diagram of the structure of an evaluation device for a fireproof partition of a power transmission line according to an embodiment of the present invention, such as Fig.14 As shown, the apparatus 1400 may include: an acquisition unit 1402 , a first determination module 1404 , a testing module 1406 , and a second determination module 1408 .

[0166] The acquisition unit 1402 is used to acquire environmental information of the fireproof partition of the transmission line, wherein the environmental information is used to indicate the influence of the temperature and humidity of the environment in which the fireproof partition is located on the aging condition of the fireproof partition.

[0167] The first determination module 1404 is used to determine a first test strategy for the fireproof partition based on the environmental information, wherein the first test strategy is used to represent a rule for testing the thermal insulation performance under different aging conditions.

[0168] The testing module 1406 is used to perform a fire test on the fireproof partition according to a first testing strategy to obtain a first testing result.

[0169] The second determination module 1408 is used to determine the evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance fails.

[0170] The evaluation device for fireproof partitions of transmission lines provided in an embodiment of the present invention obtains environmental information of the fireproof partitions of the transmission line through an acquisition unit, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partitions are located, and the degree of influence on the aging condition of the fireproof partitions; determines a first test strategy for the fireproof partitions based on the environmental information through a first determination module, wherein the first test strategy is used to indicate the rules for testing the thermal insulation performance under different aging conditions; performs a fire test on the fireproof partitions according to the first test strategy through a test module to obtain a first test result; determines an evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partitions in the first test result through a second determination module, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed, thereby solving the technical problem of low evaluation accuracy of the fireproof partitions and achieving the technical effect of improving the evaluation accuracy of the fireproof partitions.

[0171] The evaluation device for the fireproof partition of the above-mentioned power transmission line may also include a processor and a memory. The above-mentioned units are stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize corresponding functions.

[0172] The processor includes a kernel, and the kernel retrieves the corresponding program unit from the memory. One or more kernels can be set to control the same device type of devices to be shut down to perform graceful shutdown by adjusting kernel parameters.

[0173] The above-mentioned memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one storage chip.

[0174] The processor contains a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the work efficiency of traders can be improved by adjusting the kernel parameters.

[0175] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0176] Example 4

[0177] According to an embodiment of the present invention, there is further provided a computer-readable storage medium having a program stored thereon, which implements a method for evaluating fireproof partitions of a power transmission line when the program is executed by a processor.

[0178] Example 5

[0179] According to an embodiment of the present invention, a processor is further provided, and the processor is used to run a program, wherein the program executes an evaluation method for fire partitions of a power transmission line when running.

[0180] Example 6

[0181] Fig.15 is a schematic diagram of an electronic device for evaluating a fireproof partition of a power transmission line according to an embodiment of the present invention, such as Fig.15 As shown, an embodiment of the present invention further provides an electronic device, the device includes a processor, a memory and a program stored in the memory and executable on the processor, and the processor implements the following steps when executing the program: obtaining environmental information of the fireproof partition of the transmission line, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partition is located, and the degree of influence on the aging condition of the fireproof partition; based on the environmental information, determining a first test strategy for the fireproof partition, wherein the first test strategy is used to indicate the rules for testing the thermal insulation performance under different aging conditions; performing a fire test on the fireproof partition according to the first test strategy to obtain a first test result; and determining an evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed.

[0182] When the processor executes the program, the following steps are also implemented: based on environmental information, a second test strategy for testing the strength performance of the fireproof partition is determined, wherein the second test strategy is a rule for testing the strength performance under different aging conditions; according to the second test strategy, the fireproof partition is tested to obtain a second test result; based on the second test result, an evaluation result of the strength performance is determined, wherein the evaluation result of the strength performance is used to indicate whether the strength performance has failed.

[0183] When the processor executes the program, the following steps are also implemented: the strength performance includes at least one of the following: dry bending strength performance, impact strength performance and water-saturated bending strength performance, wherein, based on the environmental information, a second test strategy for testing the strength performance of the fireproof partition is determined, including: based on the environmental information, under different aging cycles of the fireproof partition, flat bending strength data, water-saturated bending strength data and / or impact strength data are determined; and the second test strategy corresponding to different aging cycles, different flat bending strength data, different water-saturated bending strength data and different impact strength data is determined.

[0184] When the processor executes the program, the following steps are also implemented: based on the second test result, the evaluation result of the strength performance is determined, including: in response to the evaluation result of the strength performance being a strength performance failure, determining the bending performance failure cycle and the impact performance failure cycle of the fireproof partition; the method also includes: in response to the evaluation result of the thermal insulation performance being a thermal insulation performance failure, determining the thermal insulation performance failure cycle of the fireproof partition; and determining the minimum value among the bending performance failure cycle, the impact performance failure cycle and the thermal insulation performance failure cycle as the failure cycle of the fireproof partition.

[0185] When the processor executes the program, the following steps are also implemented: obtaining environmental information of the fireproof partitions of the transmission line includes: obtaining temperature data and humidity data of the environment in which the fireproof partitions are located, wherein the temperature data includes accelerated aging temperature and natural aging temperature; determining environmental information based on the accelerated aging temperature, natural aging temperature and humidity data.

[0186] When the processor executes the program, the following steps are also implemented: based on the environmental information, a first test strategy for testing the thermal insulation performance of the fireproof partition is determined, including: based on the environmental information, an aging cycle of the fire test is determined; based on different aging cycles, a corresponding first test strategy is formulated.

[0187] When the processor executes the program, the following steps are also implemented: the first test result includes an attenuation fitting curve of the thermal insulation performance, wherein, according to the first test strategy, a fire test is performed on the fireproof partition to obtain the first test result, including: building a combustion platform corresponding to the fireproof partition to simulate the fire conditions of the transmission line under different voltage levels; based on the combustion platform, obtaining the temperature data that the fireproof partition is subjected to under the fire condition; based on the temperature data, building a fire test platform for performing a fire test on the fireproof partition; using the fire test platform, calling the first test strategy corresponding to different aging cycles, performing a fire test on the fireproof partition, and obtaining the corresponding attenuation fitting curve of the thermal insulation performance.

[0188] The devices in this article can be servers, PCs, PADs, mobile phones, etc.

[0189] The present invention also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having the following method steps: obtaining environmental information of the fireproof partitions of the transmission line, wherein the environmental information is used to indicate the temperature and humidity of the environment in which the fireproof partitions are located, and the degree of influence on the aging condition of the fireproof partitions; based on the environmental information, determining a first test strategy for the fireproof partitions, wherein the first test strategy is used to indicate the rules for testing the thermal insulation performance under different aging conditions; performing a fire test on the fireproof partitions according to the first test strategy to obtain a first test result; and determining an evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partitions in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance has failed.

[0190] When executed on a data processing device, it is also suitable for executing an initialization program having the following method steps: based on environmental information, determining a second test strategy for testing the strength performance of the fireproof partition, wherein the second test strategy is a rule for testing the strength performance under different aging conditions; testing the fireproof partition according to the second test strategy to obtain a second test result; based on the second test result, determining an evaluation result of the strength performance, wherein the evaluation result of the strength performance is used to indicate whether the strength performance has failed.

[0191] When executed on a data processing device, it is also suitable for executing an initialization program having the following method steps: the strength performance includes at least one of the following: dry bending strength performance, impact strength performance and water-saturated bending strength performance, wherein, based on environmental information, a second test strategy for testing the strength performance of the fire partition is determined, including: based on environmental information, at different aging cycles of the fire partition, flat bending strength data, water-saturated bending strength data and / or impact strength data are determined; and the second test strategy corresponding to different aging cycles, different flat bending strength data, different water-saturated bending strength data and different impact strength data is determined.

[0192] When executed on a data processing device, it is also suitable for executing an initialization program having the following method steps: based on the second test result, determining the evaluation result of the strength performance, including: in response to the evaluation result of the strength performance being a strength performance failure, determining the bending performance failure cycle and the impact performance failure cycle of the fireproof partition; the method also includes: in response to the evaluation result of the thermal insulation performance being a thermal insulation performance failure, determining the thermal insulation performance failure cycle of the fireproof partition; and determining the minimum value among the bending performance failure cycle, the impact performance failure cycle and the thermal insulation performance failure cycle as the failure cycle of the fireproof partition.

[0193] When executed on a data processing device, it is also suitable for executing an initialization program having the following method steps: obtaining environmental information of the fireproof partitions of the transmission line, including: obtaining temperature data and humidity data of the environment in which the fireproof partitions are located, wherein the temperature data includes accelerated aging temperature and natural aging temperature; determining environmental information based on the accelerated aging temperature, natural aging temperature and humidity data.

[0194] When executed on a data processing device, it is also suitable for executing an initialization program having the following method steps: based on environmental information, determining a first test strategy for testing the thermal insulation performance of the fireproof partition, including: based on environmental information, determining an aging cycle for the fire test; based on different aging cycles, formulating a corresponding first test strategy.

[0195] When executed on a data processing device, it is also suitable for executing an initialization program having the following method steps: a first test result includes an attenuation fitting curve of thermal insulation performance, wherein, according to a first test strategy, a fire test is performed on the fireproof partition to obtain a first test result, including: building a combustion platform corresponding to the fireproof partition to simulate the fire condition of the transmission line at different voltage levels; based on the combustion platform, obtaining the temperature data that the fireproof partition is subjected to under the fire condition; based on the temperature data, building a fire test platform for performing a fire test on the fireproof partition; using the fire test platform, calling the first test strategy corresponding to different aging cycles, performing a fire test on the fireproof partition, and obtaining the corresponding attenuation fitting curve of thermal insulation performance.

[0196] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0197] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0198] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0199] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0200] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0201] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0202] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0203] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0204] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0205] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for evaluating fireproof partitions of power transmission lines, characterized in that: include: Obtaining environmental information of the fireproof partition of the power transmission line, wherein the environmental information is used to indicate the influence of the temperature and humidity of the environment in which the fireproof partition is located on the aging condition of the fireproof partition; Based on the environmental information, determining a first test strategy for the fireproof partition, wherein the first test strategy is used to represent a rule for testing the thermal insulation performance under different aging conditions; According to the first test strategy, a fire test is performed on the fireproof partition to obtain a first test result; Based on the insulation time of the fireproof partition in the first test result, an evaluation result of the insulation performance is determined, wherein the evaluation result is used to indicate whether the insulation performance fails.

2. The evaluation method according to claim 1, characterized in that: The method further comprises: Based on the environmental information, determining a second test strategy for testing the strength performance of the fireproof partition, wherein the second test strategy is a rule for testing the strength performance under different aging conditions; According to the second test strategy, the fireproof partition is tested to obtain a second test result; Based on the second test result, an evaluation result of the strength performance is determined, wherein the evaluation result of the strength performance is used to indicate whether the strength performance has failed.

3. The evaluation method according to claim 2, characterized in that: The strength performance includes at least one of the following: dry bending strength performance, impact strength performance, and water absorption saturated bending strength performance, wherein, based on the environmental information, determining a second test strategy for testing the strength performance of the fireproof partition includes: Based on the environmental information, determining flat bending strength data, water absorption saturated bending strength data and / or impact strength data at different aging cycles of the fireproof partition; Determine the second test strategy corresponding to different aging cycles, different flat bending strength data, different water absorption saturated bending strength data and different impact strength data.

4. The evaluation method according to claim 2, characterized in that: Determining the evaluation result of the strength performance based on the second test result includes: In response to the evaluation result of the strength performance being the strength performance failure, determining a bending performance failure cycle and an impact performance failure cycle of the fire barrier; The method further includes: in response to the evaluation result of the thermal insulation performance being the thermal insulation performance failure, determining a thermal insulation performance failure period of the fireproof partition; The minimum value among the bending performance failure cycle, the impact performance failure cycle and the thermal insulation performance failure cycle is determined as the failure cycle of the fireproof partition.

5. The evaluation method according to claim 1, characterized in that: Obtaining environmental information of the fireproof partition of the transmission line, including: Acquiring temperature data and humidity data of the environment in which the fireproof partition is located, wherein the temperature data includes accelerated aging temperature and natural aging temperature; The environmental information is determined based on the accelerated aging temperature, the natural aging temperature, and the humidity data.

6. The evaluation method according to claim 1, characterized in that: Determining a first test strategy for testing the thermal insulation performance of the fireproof partition based on the environmental information includes: Based on the environmental information, determining an aging cycle of the fire test; Based on the different aging cycles, the corresponding first test strategy is formulated.

7. The evaluation method according to claim 6, characterized in that: The first test result includes a decay fitting curve of the thermal insulation performance, wherein, according to the first test strategy, a fire test is performed on the fireproof partition to obtain the first test result, including: Building a combustion platform corresponding to the fireproof partition to simulate the fire conditions of the power transmission line at different voltage levels; Based on the combustion platform, obtaining temperature data of the fireproof partition under the fire condition; Based on the temperature data, a fire test platform is constructed for performing the fire test on the fireproof partition; The fire test platform is used to call the first test strategy corresponding to different aging cycles, and the fire test is performed on the fireproof partition to obtain the corresponding attenuation fitting curve of the thermal insulation performance.

8. An evaluation device for fireproof partitions of power transmission lines, characterized in that: include: An acquisition unit, used to acquire environmental information of the fireproof partition of the power transmission line, wherein the environmental information is used to indicate the influence of the temperature and humidity of the environment in which the fireproof partition is located on the aging condition of the fireproof partition; A first determination module, configured to determine a first test strategy for the fireproof partition based on the environmental information, wherein the first test strategy is used to represent a rule for testing the thermal insulation performance under different aging conditions; A testing module, configured to perform a fire test on the fireproof partition according to the first testing strategy to obtain a first testing result; The second determination module is used to determine the evaluation result of the thermal insulation performance based on the thermal insulation time of the fireproof partition in the first test result, wherein the evaluation result is used to indicate whether the thermal insulation performance fails.

9. An electronic device, comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the method for evaluating the fire barrier of a power transmission line according to any one of claims 1 to 7.

10. A processor, characterized in that: The processor is used to run a program, wherein the program, when run by the processor, executes the method for evaluating the fire barrier of a power transmission line according to any one of claims 1 to 7.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the evaluation method for the fire partition of the transmission line according to any one of claims 1 to 7.

12. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to execute the method for evaluating the fire barrier of a power transmission line according to any one of claims 1 to 7.

13. A computer program product, characterized in that The invention comprises a computer program, which, when executed by a processor, implements the evaluation method for the fire barrier of a power transmission line according to any one of claims 1 to 7.

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