System and method for testing compatibility of gaseous extinguishing agent and elastic material

Abstract

The invention discloses a gas extinguishing agent and elastic material compatibility testing system and method, and belongs to the technical field of extinguishing agent performance testing. The provided system for testing the compatibility of the gaseous extinguishing agent and the elastic material comprises a reaction device system, a feeding device and a pressurizing device, the reaction device system comprises a reaction device and a refrigerating and heating device, a jig for fixing the elastic material is arranged in the reaction device, and the refrigerating and heating device is connected with the reaction device; the feeding device comprises a first gaseous extinguishing agent storage tank and a second gaseous extinguishing agent storage tank, and the boiling point of the first gaseous extinguishing agent is smaller than that of the second gaseous extinguishing agent; the reaction device is respectively connected with the first gas extinguishing agent storage tank and the second gas extinguishing agent storage tank; the pressurizing device is connected with the reaction device. The problem that an existing fire extinguishing agent compatibility device cannot meet the requirements of high-pressure and high-low-temperature alternating test conditions of low-boiling-point gas fire extinguishing agents and high-boiling-point gas fire extinguishing agents at the same time can be solved, and good precision and stability are achieved.

Description

Technical Field

[0001] This application belongs to the technical field of fire extinguishing agent performance testing, and particularly relates to a testing system and method for the compatibility between a gas fire extinguishing agent and an elastic material. Background Art

[0002] At present, hydrofluorocarbon-based (such as heptafluoropropane, etc.) gas fire extinguishing agents widely used in the market may be phased out worldwide after the "Halon" fire extinguishing agent. However, the comprehensive performance of existing alternatives still lags behind the requirements of ideal alternatives. Facing the urgent situation of the gradual elimination of old products and the lack of suitable alternatives, the research and development of new clean and efficient gas fire extinguishing agents has become an urgent problem to be solved.

[0003] Ideal new gas fire extinguishing agents need to meet requirements such as environmental friendliness, high fire extinguishing efficiency, stable storage, safety and low toxicity. Low-boiling gas fire extinguishing agents represented by octafluoro-2-butene (boiling point 1.2°C) and high-boiling gas fire extinguishing agents represented by perfluoropentanone (boiling point 26.9°C) are expected to become a new generation of gas fire extinguishing agents with application prospects. Currently, there are many studies on the fire extinguishing performance and environmental protection performance of gas fire extinguishing agents at home and abroad; although some compatibilities of different solutions have been carried out for storage performance, no systematic research has been carried out under actual application conditions (high pressure, high and low temperature alternating). According to existing application technologies, gas fire extinguishing agents must be stored under high pressure. Therefore, the compatibility between gas fire extinguishing agents and the rubber sealing material of the storage tank will directly affect the sealing effect and safety performance.

[0004] In related technologies, in the process of screening and developing gas fire extinguishing agents that meet the requirements, a systematic study on their compatibility with typical sealing rubber materials is indispensable and crucial for the subsequent engineering application of new gas fire extinguishing agents. However, existing fire extinguishing agent compatibility devices are difficult to simultaneously meet the requirements of low- and high-boiling gas fire extinguishing agents under high-pressure, high- and low-temperature alternating test conditions. In addition, the safety, simplicity, automation level and accuracy of the test also need to be further improved. Summary of the Invention

[0005] In view of the above problems, the present invention aims to at least solve one of the technical problems in the related technologies to some extent. For this reason, the present invention provides a testing system and method for the compatibility between a gas fire extinguishing agent and an elastic material, which can alleviate the current demand that the fire extinguishing agent compatibility device is difficult to simultaneously meet the requirements of low- and high-boiling gas fire extinguishing agents under high-pressure, high- and low-temperature alternating test conditions, and has good accuracy and stability.

[0006] To solve the above technical problems, the present application is implemented as follows:

[0007] As one aspect of the present application, a testing system for the compatibility between a gas fire extinguishing agent and an elastic material is provided. The testing system includes:

[0008] A reaction device system, the reaction device system includes a reaction device and a refrigeration and heating device, a jig for fixing an elastic material is provided inside the reaction device, and the refrigeration and heating device is connected to the reaction device;

[0009] A feeding device, the feeding device includes a first gas fire extinguishing agent storage tank and a second gas fire extinguishing agent storage tank, the boiling point of the first gas fire extinguishing agent in the first gas fire extinguishing agent storage tank is less than the boiling point of the second gas fire extinguishing agent in the second gas fire extinguishing agent storage tank; the reaction device is respectively connected to the first gas fire extinguishing agent storage tank and the second gas fire extinguishing agent storage tank;

[0010] A pressurizing device, the pressurizing device is connected to the reaction device.

[0011] In addition, according to the gas fire extinguishing agent and elastic material compatibility testing system of the present application, it may also have the following additional technical features:

[0012] In some of the embodiments, the pressurizing device includes a high-pressure nitrogen container, and the output end of the high-pressure nitrogen container is connected to the air inlet of the reaction device through a first pipeline.

[0013] In some of the embodiments, the refrigeration and heating device includes a low-temperature constant temperature bath, and the low-temperature constant temperature bath is respectively connected to the medium inlet and the medium outlet of the reaction device through two pipelines.

[0014] In some of the embodiments, the boiling point of the first gas fire extinguishing agent is lower than 25 °C, and the first gas fire extinguishing agent is a gas fire extinguishing agent that is gaseous at 25 °C.

[0015] In some of the embodiments, the boiling point of the second gas fire extinguishing agent is higher than 25 °C, and the second gas fire extinguishing agent is a gas fire extinguishing agent that is liquid at 25 °C.

[0016] In some of the embodiments, the elastic material includes a rubber part, and the rubber part includes a dumbbell-shaped rubber part.

[0017] In some of the embodiments, electronic scales are respectively arranged below the first gas fire extinguishing agent storage tank and the second gas fire extinguishing agent storage tank.

[0018] In some of the embodiments, the output end of the first gas fire extinguishing agent storage tank is connected to the feeding port of the reaction device through a second pipeline; the output end of the second gas fire extinguishing agent storage tank is connected to the feeding port of the reaction device through a third pipeline; a first solenoid valve is provided on the second pipeline, and a second solenoid valve is provided on the third pipeline.

[0019] In some of the embodiments, the testing system further includes a control device;

[0020] The control device is respectively connected to the reaction device and the refrigeration and heating device through communication lines; the control device is also respectively connected to the first solenoid valve and the second solenoid valve through communication lines; a valve is provided on the pipeline connecting the pressurizing device and the reaction device, and the control device is also connected to the valve through a communication line.

[0021] As another aspect of the present application, a method for testing the compatibility between a gas fire extinguishing agent and an elastic material is provided, and the testing method includes:

[0022] Fix the elastic material to be tested in the reaction device through a jig.

[0023] Inject the fire extinguishing agent into the reaction device.

[0024] Turn on the refrigeration and heating device connected to the reaction device to adjust the temperature of the reaction device.

[0025] After the temperature of the reaction device rises to the set value and the pressure of the reaction device stabilizes, pressurize the reaction device with high-pressure gas in the pressurizing device so that the pressure of the reaction device reaches the experimental set standard.

[0026] Conduct a full-immersion experiment on the elastic material to be tested under high pressure and alternating high and low temperature conditions.

[0027] After the immersion is completed, take out the elastic material and obtain the results according to the physical and chemical properties of the elastic material.

[0028] Among them, the step of injecting the fire extinguishing agent into the reaction device includes:

[0029] When conducting the compatibility test between the first gas fire extinguishing agent and the elastic material, place the first gas fire extinguishing agent storage tank on the electronic scale, measure the initial mass m0 of the first gas fire extinguishing agent, open the first solenoid valve, and close the second solenoid valve, and introduce the first gas fire extinguishing agent into the reaction device, and observe the mass m displayed on the electronic scale i , where i represents different moments. When the mass of the injected first gas fire extinguishing agent (m0 - m i ) meets the requirement for full immersion of the test sample, close the first solenoid valve.

[0030] In some embodiments, the step of injecting the fire extinguishing agent into the reaction device further includes:

[0031] When conducting the compatibility test between the second gas fire extinguishing agent and the elastic material, place the second gas fire extinguishing agent storage tank on the electronic scale, measure the initial mass m0 of the second gas fire extinguishing agent, open the second solenoid valve, and close the first solenoid valve, and inject the second gas fire extinguishing agent into the reaction device, and measure the remaining mass m of the second gas fire extinguishing agent storage tank by using the electronic scalei , where i represents the weighing times. When the mass of the second fire extinguishing gas injected (m0 - m i ) meets the requirements for at least fully submerging the test sample, the second solenoid valve is closed.

[0032] In some of these embodiments, the reaction device is installed in a constant temperature test chamber at 20°C ± 5°C.

[0033] In some of these embodiments, the mass of the first fire extinguishing gas or the mass of the second fire extinguishing gas m0 - m in the reaction device i = 1.2 * (ρ * πr 2 * l) to 1.5 * (ρ * πr 2 * l), where ρ is the density of the fire extinguishing gas, in g / cm 3 ; r is the radius of the reaction device, in cm; l is the length of the elastic material, in cm.

[0034] In some of these embodiments, the pressure experiment setting standard for the reaction device is 2.5 Mpa to 5.6 Mpa.

[0035] In some of these embodiments, the pressure experiment setting standard for the reaction device is 4.2 Mpa.

[0036] In some of these embodiments, the high and low temperature alternating conditions include: at 50 ± 0.5°C and 0 ± 0.5°C, each maintained for 24 h in turn and alternately, after cycling multiple times, at 25 ± 0.5°C, maintained for 24 h, and cycled several times.

[0037] In some of these embodiments, the experimental period for the elastic material test sample is 7 days.

[0038] In some of these embodiments, the high pressure, high and low temperature alternating conditions include alternating conditions of 0 to 12.5 MPa and 0 to 100°C.

[0039] In some of these embodiments, the results obtained according to the physical and chemical properties of the elastic material include:

[0040] After the test is completed, compare the physical and chemical property parameters before and after the experiment with reference to GB / T 14832 - 2008 to evaluate the compatibility, where the physical and chemical property parameters include one or more of mass, hardness, tensile strength change rate, and elongation at break change rate.

[0041] Compared with the prior art, implementing the technical solution of the present invention has at least the following beneficial effects:

[0042] In this application, a gas fire extinguishing agent and elastic material compatibility testing system and testing method are provided, including a reaction device, a refrigeration and heating device, a pressurizing device, and a feeding device. The first gas fire extinguishing agent storage tank in the feeding device is used to store the first gas fire extinguishing agent, and the second gas fire extinguishing agent storage tank in the feeding device is used to store the second gas fire extinguishing agent. Relatively speaking, the first gas fire extinguishing agent can be a gas fire extinguishing agent with a lower boiling point, and the second gas fire extinguishing agent can be a gas fire extinguishing agent with a higher boiling point. Therefore, through the connection and combined use of the above devices, the testing requirements of gas fire extinguishing agents under high-pressure, high-low temperature alternating conditions can be achieved. In particular, it can alleviate the current difficulty of the fire extinguishing agent compatibility device in simultaneously meeting the testing requirements of low- and high-boiling point gas fire extinguishing agents under high-pressure, high-low temperature alternating testing conditions. In addition, the provided testing device is simple to operate, has a high degree of automation, and has good accuracy and stability.

[0043] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 Schematic structural diagram of a gas fire extinguishing agent and elastic material compatibility testing system provided for some exemplary embodiments of the present application;

[0045] Figure 2 Schematic structural diagram of a jig provided for some exemplary embodiments of the present application;

[0046] Figure 3 Another schematic structural diagram of a jig provided for some exemplary embodiments of the present application;

[0047] Figure 4 Schematic structural diagram of an elastic material provided for some exemplary embodiments of the present application.

[0048] Description of the reference numerals:

[0049] 10 - Reaction device;

[0050] 20 - Refrigeration and heating device;

[0051] 30 - Control device;

[0052] 40 - Pressurizing device;

[0053] 50 - Feeding device; 501 - First gas fire extinguishing agent storage tank; 502 - Second gas fire extinguishing agent storage tank;

[0054] 60 - Jig; 601 - Base; 602 - Gear disc; 603 - Lifting mechanism; 604 - Sample label;

[0055] 70 - Electronic scale;

[0056] 801 - First solenoid valve; 802 - Second solenoid valve; 803 - Valve;

[0057] 90 - Elastic material. Detailed implementation mode

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0059] As mentioned in the background art, gas fire extinguishing agents need to be stored under high pressure. The compatibility between the gas fire extinguishing agent and the rubber sealing material of the storage tank will directly affect the sealing effect and safety performance. Therefore, studying the compatibility between the gas fire extinguishing agent and the sealing rubber material (elastic material) is crucial for the subsequent engineering application of new gas fire extinguishing agents. However, the existing gas fire extinguishing agent compatibility devices are difficult to simultaneously meet the requirements of low- and high-boiling gas fire extinguishing agents under high-pressure and high-low temperature alternating test conditions.

[0060] In view of this, the technical solution of the embodiment of the present application provides a compatibility test system for gas fire extinguishing agents and elastic materials, as well as a compatibility test method for gas fire extinguishing agents and elastic materials, which can be applicable to the compatibility test of low- and high-boiling gas fire extinguishing agents and elastomeric materials under high-pressure and high-low temperature alternating conditions, with good safety, convenient operation, and good test accuracy. The description of the specific technical solution is as follows.

[0061] Please refer to Figures 1 to 4 As shown, in some embodiments of the present application, a compatibility test system for gas fire extinguishing agents and elastic materials is provided. The test system includes a reaction device system, a feeding device 50, and a pressurizing device 40.

[0062] Among them, the reaction device system includes a reaction device 10 and a refrigeration and heating device 20, and the refrigeration and heating device 20 is connected to the reaction device 10. The reaction device 10 is an experimental site where the gas fire extinguishing agent and the elastic material 90 are fully immersed, and the refrigeration and heating device 20 can be used to keep the temperature of the reaction device 10 within a preset range. The pressurizing device 40 is connected to the reaction device 10, and the pressurizing device 40 can be used to control the pressure of the reaction device 10 to ensure the stability of the pressure and the reliability of the test.

[0063] Optionally, the reaction device 10 includes a reaction kettle. Further, the reaction kettle can be a reaction kettle with a jacket, such as a jacket circulation reaction kettle.

[0064] Thus, by connecting the refrigeration and heating device 20 and the pressurizing device 40 to the reaction device 10 respectively, it can be used to regulate the temperature and pressure of the reaction device 10, so that the tested temperature and pressure are within the preset range to meet the test requirements. For example, it can meet the test requirements of gaseous fire extinguishing agents under certain pressure and alternating high and low temperature conditions.

[0065] In a preferred embodiment of the present application, the reaction device system further includes a control device 30. The control device 30 can be respectively connected to each device such as the reaction device 10, the pressurizing device 40, and the refrigeration and heating device 20 through communication lines, and is used to make the test device perform programmable time-controlled temperature-controlled cyclic refrigeration and heating. Optionally, the control device 30 integrates a program segment temperature control, a time control system, and a real-time parameter display system for the temperature and pressure inside the autoclave. Thus, by respectively connecting the control device 30 to the reaction device 10, the pressurizing device 40, the refrigeration and heating device 20, etc. through signal connections, the degree of automation can be improved, and the test can have good accuracy and stability, improving the stability of the detection environment and the control requirements.

[0066] Optionally, the control device 30 includes a PLC controller.

[0067] It should be noted that the present application does not limit the specific structure or type of the control device 30. Its working principle and type can refer to the prior art, and its specific control method can be known to those skilled in the art according to the prior art. The present application does not limit this, as long as it does not limit the purpose of the present application.

[0068] In the present application, the feeding device 50 includes a first gaseous fire extinguishing agent storage tank 501 and a second gaseous fire extinguishing agent storage tank 502. The boiling point of the first gaseous fire extinguishing agent in the first gaseous fire extinguishing agent storage tank 501 is lower than the boiling point of the second gaseous fire extinguishing agent in the second gaseous fire extinguishing agent storage tank 502; the reaction device 10 is respectively connected to the first gaseous fire extinguishing agent storage tank 501 and the second gaseous fire extinguishing agent storage tank 502.

[0069] The above-mentioned first gaseous fire extinguishing agent storage tank 501 can be a container for storing the first gaseous fire extinguishing agent, and the second gaseous fire extinguishing agent storage tank 502 can be a container for storing the second gaseous fire extinguishing agent. The first gaseous fire extinguishing agent can be a gaseous fire extinguishing agent with a low boiling point, and the second gaseous fire extinguishing agent can be a gaseous fire extinguishing agent with a high boiling point. The high boiling point and low boiling point here are relative. As long as the boiling point of one of the gaseous fire extinguishing agents is relatively high and the boiling point of the other gaseous fire extinguishing agent is relatively low, the present application does not limit its specific boiling point value.

[0070] In this application, the provided test system mainly consists of three parts: a reaction device system, a feeding device 50 (feeding system), and a pressurizing device 40 (pressurizing system). The reaction device system includes a reaction device 10, a refrigeration and heating device 20, and a control device 30. The reaction device 10, such as a reaction kettle, is a place for conducting full-immersion experiments on gaseous fire extinguishing agents with elastomeric materials. The control device 30 integrates a program-segmented temperature control, a timing system, and a real-time parameter display system for the temperature and pressure inside the autoclave. The circulating refrigeration and heating device 20 can be equipped with a low-temperature constant-temperature bath, and the heat transfer media include alcohols such as methanol and ethylene glycol. The feeding device 50 is a complete set of systems for filling low- and high-boiling-point gaseous fire extinguishing agent containers into the reaction kettle. The pressurizing device 40 can include a high-pressure nitrogen gas container for controlling the pressure inside the reaction kettle.

[0071] Thus, based on the above settings, according to the technical solution provided by the embodiments of the present invention, using the test system of the embodiments of the present invention, it is applicable to the test of the compatibility between gaseous fire extinguishing agents and elastic materials, including both low-boiling-point and high-boiling-point gaseous fire extinguishing agents. This test system can perform program-segmented timing and temperature control for circulating refrigeration and heating, and can meet the test requirements under high-pressure, high-low temperature alternating conditions for gaseous fire extinguishing agents. For example, it can meet the test requirements under the alternating conditions of 0 - 12.5 MPa and 0 - 100 °C for gaseous fire extinguishing agents, alleviating the problem that the current fire extinguishing agent compatibility device is difficult to simultaneously meet the test requirements for low- and high-boiling-point gaseous fire extinguishing agents under high-pressure, high-low temperature alternating test conditions. In addition, the provided test device is simple to operate, has a high degree of automation, and has good accuracy and stability.

[0072] In some embodiments, the pressurizing device 40 includes a high-pressure nitrogen gas container, and the output end of the high-pressure nitrogen gas container is connected to the inlet of the reaction device 10 through a first pipeline; that is, the reaction device 10 is connected to the high-pressure nitrogen gas container through the first pipeline.

[0073] As an example, the high-pressure nitrogen gas container is connected to the inlet of the reaction kettle through an inerting ventilation pipeline to achieve the regulation of the kettle pressure.

[0074] The setting of the high-pressure nitrogen gas container in this application can ensure the high-pressure test requirements for gaseous fire extinguishing agents, ensure the stability of the pressure and the reliability of the test, provide a good pressurizing environment for the system, and meet the test requirements under some pressure conditions.

[0075] In some embodiments, the output end of the first gaseous fire extinguishing agent storage tank 501 is connected to the inlet of the reaction device 10 through a second pipeline; the output end of the second gaseous fire extinguishing agent storage tank 502 is connected to the inlet of the reaction device 10 through a third pipeline. That is, the reaction device 10 is respectively connected to the first gaseous fire extinguishing agent storage tank 501 and the second gaseous fire extinguishing agent storage tank 502 through the second pipeline and the third pipeline. Among them, the first gaseous fire extinguishing agent storage tank 501 can be a low-boiling-point gaseous fire extinguishing agent storage tank, and the second gaseous fire extinguishing agent storage tank 502 can be a high-boiling-point gaseous fire extinguishing agent storage tank.

[0076] In some embodiments, the refrigeration and heating device 20 includes a low-temperature constant temperature bath, which is connected to the medium inlet and the medium outlet of the reaction device 10 through two pipelines respectively. For example, the reaction device 10 can be connected to the low-temperature constant temperature bath through the fourth pipeline and the fifth pipeline.

[0077] Optionally, the cooling and heating medium in the refrigeration and heating device 20 includes alcohol substances such as methanol and ethylene glycol. Optionally, the refrigeration and heating device 20 is connected to the reaction device 10, such as the oil inlet and the oil outlet of the jacketed reactor oil bath, through two pipelines respectively.

[0078] Thus, by setting the above-mentioned refrigeration and heating device 20, the temperature of the reaction kettle can be adjusted.

[0079] In some embodiments, electronic scales 70 are respectively arranged below the first gas fire extinguishing agent storage tank 501 and the second gas fire extinguishing agent storage tank 502.

[0080] In some embodiments, a first solenoid valve 801 is provided on the second pipeline, and a second solenoid valve 802 is provided on the third pipeline. That is, a first solenoid valve 801 is provided on the pipeline connecting the reaction device 10 and the first gas fire extinguishing agent storage tank 501, and a second solenoid valve 802 is provided on the pipeline connecting the reaction device 10 and the second gas fire extinguishing agent storage tank 502.

[0081] Thus, a first solenoid valve 801 and a second solenoid valve 802 are respectively provided at the outlets of the low-boiling-point gas fire extinguishing agent storage tank and the high-boiling-point gas fire extinguishing agent storage tank. When conducting the test experiment of the first gas fire extinguishing agent, that is, the low-boiling-point gas fire extinguishing agent, the second solenoid valve 802 is closed, the first solenoid valve 801 is opened, and a certain amount of low-boiling-point gas fire extinguishing agent is filled into the reaction kettle through the air inlet of the reaction kettle by using the ventilation pipeline. The mass of the low-boiling-point gas fire extinguishing agent introduced is monitored in real time by the electronic scale 70.

[0082] When conducting the compatibility test experiment of the high-boiling-point gas fire extinguishing agent, the first solenoid valve 801 is closed, the second solenoid valve 802 is opened, and a certain amount of high-boiling-point gas fire extinguishing agent is injected into the reaction kettle along the inner wall of the reaction kettle. The mass of the high-boiling-point gas fire extinguishing agent injected is measured intermittently by the electronic scale 70.

[0083] In this application, when conducting the compatibility test experiment of low-boiling-point gaseous fire extinguishing agents, an electronic scale 70 is required to monitor the mass of the low-boiling-point gaseous fire extinguishing agent in real time. When conducting the compatibility test experiment of high-boiling-point gaseous fire extinguishing agents, a sub-scale is required to measure the mass of the high-boiling-point gaseous fire extinguishing agent intermittently. This is because the low-boiling-point gaseous fire extinguishing agent is a gas at room temperature and can only be filled into the reaction kettle through a ventilation duct. Therefore, it is necessary to monitor the mass of the gas introduced in real time to ensure that the introduced amount meets the requirements (the requirement of complete immersion). The high-boiling-point gaseous fire extinguishing agent is a liquid at room temperature and can be poured along the inner wall of the reaction kettle into the reaction kettle, and it is possible to visually check whether the liquid level completely covers the test sample. Therefore, an intermittent measurement method can be adopted.

[0084] In some embodiments, the control device 30 is respectively connected to the reaction device 10 and the refrigeration and heating device 20 through communication lines; the control device 30 is also respectively connected to the first solenoid valve 801 and the second solenoid valve 802 through communication lines; a valve 803 is provided on the pipeline connecting the pressurizing device 40 and the reaction device 10, and the control device 30 is also connected to the valve 803 through a communication line.

[0085] In this application, the control device 30 is connected to the reaction kettle and the circulating refrigeration and heating device 20 through communication lines to realize automatic control of the kettle temperature and reaction time. The control device 30 is also electrically connected to the valves at the outlets of the high-pressure nitrogen container, the low-boiling-point gaseous fire extinguishing agent storage tank, and the high-boiling-point gaseous fire extinguishing agent storage tank, and can realize the control and adjustment of the kettle pressure, improve the stability of the detection environment and control requirements, and avoid problems such as reduced detection accuracy caused by excessive pressure fluctuations.

[0086] In some embodiments, the first gaseous fire extinguishing agent is a low-boiling-point gaseous fire extinguishing agent, the boiling point of the first gaseous fire extinguishing agent is lower than 25 °C, and the first gaseous fire extinguishing agent is a gaseous fire extinguishing agent that is gaseous at 25 °C; the second gaseous fire extinguishing agent is a high-boiling-point gaseous fire extinguishing agent, the boiling point of the second gaseous fire extinguishing agent is higher than 25 °C, and the second gaseous fire extinguishing agent is a liquid fire extinguishing agent that is liquid at 25 °C.

[0087] In some embodiments, the elastic material 90 includes a rubber part, and the rubber part includes a dumbbell-shaped rubber part.

[0088] In this application, the elastic material 90 can be a rubber dumbbell-shaped spline, which has a simple structure, is convenient for testing, and also meets the test requirements.

[0089] As Figure 2 and Figure 3 shown, in some embodiments, a fixture 60 is provided inside the inner cavity of the reaction device 10, and the fixture 60 can be used to fix the elastic material 90. Through the setting of the fixture 60, the dumbbell-shaped spline can be fully immersed in the gaseous fire extinguishing agent in a vertical, independent, and non-interfering state.

[0090] This application does not limit the specific structure of the jig 60. As an example, the jig 60 may include a base 601, a gear disk 602, a lifting mechanism 603, and a fixture. The bottom end of the lifting mechanism 603 may be fixedly arranged on the base 601, and the lifting structure 603 is connected to the gear disk 602 for driving the gear disk 602 to perform lifting motion. A fixture for clamping dumbbell-shaped specimens may be arranged at the lower end of the gear disk 602. By clamping each dumbbell-shaped specimen with the fixture, each dumbbell-shaped specimen is arranged between the gear disk 602 and the base 601 in a vertical, independent, and non-interfering state. Optionally, specimen labels 604 may be arranged on the gear disk 602.

[0091] Thus, through the arrangement of the jig 60, due to the sufficient spacing between the teeth of the toothed disk, the specimens suspended thereon will not overlap and affect each other's morphology after expansion, thus preventing the accuracy of the experiment from being damaged; since the specimens are similar in color and appearance, specimen number markings are arranged on the teeth of the toothed disk for easy recording without errors; the toothed disk can be lifted to control the distance between the specimen and the base. Since the specimen will expand when soaked in the fire extinguishing agent, sufficient distance can be reserved for the expansion of the specimen to ensure the accuracy of the experiment; the specimen is designed to be suspended, so that the specimen will not tilt left and right, ensuring that all specimens are in the same environment and state in the fire extinguishing agent.

[0092] Correspondingly, in some embodiments, this application also provides a method for testing the compatibility between a gaseous fire extinguishing agent and an elastic material. The testing method includes:

[0093] Fix the elastic material 90 to be tested in the reaction device 10 through the jig 60;

[0094] Inject a fire extinguishing agent into the reaction device 10;

[0095] Turn on the refrigeration and heating device 20 connected to the reaction device 10 to regulate the temperature of the reaction device 10;

[0096] After the temperature of the reaction device 10 rises to the set value and the pressure of the reaction device 10 stabilizes, pressurize the reaction device 10 through the high-pressure gas in the pressurizing device 40 so that the pressure of the reaction device 10 reaches the experimental set standard;

[0097] Conduct a full immersion experiment on the elastic material 90 to be tested under high pressure and alternating high and low temperature conditions;

[0098] After the immersion is completed, take out the elastic material 90 and obtain the results according to the physical and chemical properties of the elastic material 90.

[0099] Among them, injecting a fire extinguishing agent into the reaction device 10 can be divided into two types: injecting a first gaseous fire extinguishing agent and a second gaseous fire extinguishing agent into the reaction device 10.

[0100] It should be understood that all the features and advantages described above for the "Compatibility Testing System for Gas Fire Extinguishing Agents and Elastic Materials" equally apply to the "Compatibility Testing Method for Gas Fire Extinguishing Agents and Elastic Materials", and will not be elaborated here one by one.

[0101] In some specific embodiments, the compatibility testing method for gas fire extinguishing agents and elastic materials includes the compatibility testing method for low-boiling-point gas fire extinguishing agents (the first gas fire extinguishing agent) and elastic materials, specifically including:

[0102] S10. Fix the elastic material 90 to be tested (such as a test specimen) in the reaction device 10 through a fixture 60.

[0103] As an example, fix multiple test specimens on the fixture 60 in a certain order, place the sample fixture 60 into the reaction device 10 such as a reaction kettle, and tighten the reaction kettle.

[0104] S20. Inject the fire extinguishing agent into the reaction device 10, specifically including:

[0105] Place the first gas fire extinguishing agent storage tank 501 on the electronic scale 70, measure the initial mass m0 of the first gas fire extinguishing agent, open the first solenoid valve 801, and close the second solenoid valve 802. Slowly introduce the first gas fire extinguishing agent into the reaction device 10, and closely monitor the mass m displayed on the electronic scale during the gas injection process. i , where i represents different moments. When the mass of the first gas fire extinguishing agent introduced (m0 - m i ) meets the requirement for complete immersion of the test sample, close the first solenoid valve 801.

[0106] During the test, in order to keep the addition amount of the high-boiling-point gas fire extinguishing agent consistent with that of the low-boiling-point gas fire extinguishing agent, it is necessary to monitor the mass m0 - m of the low-boiling-point gas fire extinguishing agent. i .

[0107] S30. Turn on the refrigeration and heating device 20 connected to the reaction device 10 to regulate the temperature of the reaction device 10.

[0108] As an example, turn on the control device 30 and control the temperature control and circulation functions of the refrigeration and heating device 20 through the control device 30.

[0109] S40. After the temperature of the reaction device 10 rises to the set value and the pressure of the reaction device 10 stabilizes, pressurize the reaction device 10 with high-pressure gas in the pressurizing device 40 so that the pressure of the reaction device 10 reaches the experimental set standard.

[0110] As an example, the control device 30 is used to monitor the temperature and pressure in the kettle. After the temperature in the kettle rises to the set value and the pressure in the kettle stabilizes, the control device 30 controls the high-pressure nitrogen gas container to introduce a certain amount of nitrogen gas into the reaction kettle to pressurize it, so that the pressure in the kettle reaches the experimental set standard.

[0111] S50. Perform a full immersion experiment on the elastic material 90 to be tested under high pressure and alternating high and low temperature conditions.

[0112] S60. After the immersion is completed, take out the elastic material 90 and obtain the results according to the physical and chemical properties of the elastic material 90.

[0113] As an example, after the experiment is completed, open the gas outlet of the reaction kettle to collect the low-boiling-point gas fire extinguishing agent, take out the sample fixture 60, remove the test specimen, and characterize the corresponding physical and chemical properties.

[0114] In some other specific embodiments, the method for testing the compatibility between the gas fire extinguishing agent and the elastic material includes the method for testing the compatibility between the high-boiling-point gas fire extinguishing agent (the second gas fire extinguishing agent) and the elastic material, specifically including:

[0115] S10. Fix the elastic material 90 to be tested (such as a test specimen) in the reaction device 10 through the fixture 60.

[0116] As an example, fix multiple test specimens on the fixture 60 in a certain order, put the sample fixture 60 into the reaction device 10 such as a reaction kettle, and tighten the reaction kettle.

[0117] S20. Inject the fire extinguishing agent into the reaction device 10, specifically including:

[0118] Place the second gas fire extinguishing agent storage tank 502 on the electronic scale 70, measure the initial mass m0 of the second gas fire extinguishing agent, open the second solenoid valve 802, and close the first solenoid valve 801. Inject the second gas fire extinguishing agent along the inner wall of the reaction device 10 such as a reaction kettle into the reaction kettle, and use the electronic scale 70 to measure the remaining mass m of the second gas fire extinguishing agent storage tank 502 i , where i represents the weighing times. When the mass (m0 - m i ) of the injected second gas fire extinguishing agent meets the requirement of at least fully submerging the test sample, close the second solenoid valve 802.

[0119] S30. Turn on the refrigeration and heating device 20 connected to the reaction device 10 to regulate the temperature of the reaction device 10.

[0120] As an example, turn on the control device 30 and control the temperature control and circulation functions of the refrigeration and heating device 20 through the control device 30.

[0121] S40. After the temperature of the reaction device 10 rises to the set value and the pressure of the reaction device 10 stabilizes, the reaction device 10 is pressurized by the high-pressure gas in the pressurizing device 40 so that the pressure of the reaction device 10 reaches the experimental set standard.

[0122] As an example, the control device 30 is used to monitor the kettle temperature and kettle pressure. After the kettle temperature rises to the set value and the kettle pressure stabilizes, the control device 30 controls the high-pressure nitrogen container to introduce a certain amount of nitrogen into the reaction kettle for pressurization so that the kettle pressure reaches the experimental set standard.

[0123] S50. The elastic material 90 to be tested is subjected to a full immersion experiment under high pressure and alternating high and low temperature conditions.

[0124] S60. After the immersion is completed, the elastic material 90 is taken out, and the results are obtained according to the physical and chemical properties of the elastic material 90.

[0125] As an example, after the experiment is completed, the sample jig 60 is taken out, the test sample strip is removed, and the corresponding physical and chemical properties are characterized; the residual high-boiling-point gas fire extinguishing agent is poured along the inner wall of the reaction kettle and collected.

[0126] In some embodiments, the reaction device 10 is installed in a constant temperature test room at 20°C ± 5°C.

[0127] In some embodiments, in step S20, the mass of the first gas fire extinguishing agent or the mass of the second gas fire extinguishing agent m0 - m in the reaction device 10 i = 1.2*(ρ*πr 2 *l) ~ 1.5*(ρ*πr 2 *l), where ρ is the density of the gas fire extinguishing agent, in g / cm 3 ; r is the radius of the reaction device, in cm; l is the length of the elastic material, in cm.

[0128] In the present application, the elastic material test sample, such as a dumbbell-shaped sample strip, is vertically placed at the bottom of the reaction kettle. The above ρ*πr 2 *l represents adding a liquid gas fire extinguishing agent into the reaction kettle, and its height is just the amount required for the length of the sample strip. The reaction kettle is a cylinder, and πr 2 represents the area, πr 2 *l represents the volume, and ρ*πr2*l represents the mass. The inventor of the present application considered that the rubber sample strip will expand and become longer during the immersion process. To ensure full immersion during the entire experimental period, a coefficient of 1.2 - 1.5 is set. Furthermore, it can be obtained that m0 - m i = 1.2*(ρ*πr 2 *l) ~ 1.5*(ρ*πr 2 *l).

[0129] In some embodiments, in step S40, the pressure test setting standard for the reaction device 10 is 2.5 Mpa to 5.6 Mpa; for example, the pressure test setting standard for the reaction device 10 can be 2.5 Mpa, 4.2 Mpa, or 5.6 Mpa.

[0130] Preferably, the pressure test setting standard for the reaction device 10 is 4.2 Mpa; that is, the kettle pressure test setting standard is 4.2 Mpa.

[0131] In some embodiments, in step S50, the high and low temperature alternating conditions include: maintaining at 50 ± 0.5 °C and 0 ± 0.5 °C for 24 h each in turn, alternating, and after cycling multiple times, maintaining at 25 ± 0.5 °C for 24 h and cycling several times.

[0132] As an example, the high and low temperature alternating conditions are: maintaining at 50 ± 0.5 °C and 0 ± 0.5 °C for 24 h each in turn, alternating, cycling 3 times, and then maintaining at 25 ± 0.5 °C for 24 h and cycling 1 time.

[0133] In some embodiments, in step S60, the experimental period for the elastic material test sample is 7 days.

[0134] In some embodiments, in step S50, the high pressure, high and low temperature alternating conditions include alternating conditions of 0 to 12.5 MPa and 0 to 100 °C.

[0135] In some embodiments, in step S60, obtaining the results according to the physical and chemical properties of the elastic material includes:

[0136] After the test is completed, compare the physical and chemical property parameters before and after the experiment with reference to GB / T 14832-2008 to evaluate the compatibility, where the physical and chemical property parameters include one or more of mass, hardness, tensile strength change rate, and elongation at break change rate, etc.

[0137] In this application, the test content of the rubber test sample is carried out according to GB / T 14832-2008, and the test parameters include: mass change rate, volume change rate, hardness change rate, tensile strength change rate, elongation at break change rate, etc. As an example:

[0138] (1) Mass: Calculate the mass change Δm of each rubber sample before and after the experiment i and the average mass change value of this kind of rubber

[0139] Δmi = m i -m 0,i Formula 1;

[0140]

[0141] In the formula, i is the number of the rubber spline.

[0142] (2) Hardness: Using the same calculation method as the mass change, calculate the hardness before and after the experiment of each rubber spline and the average hardness change value of this kind of rubber spline.

[0143] (3) Tensile strength change rate: First, calculate the average tensile strength of this kind of rubber spline before and after the reaction through Formula 3 and Formula 4 respectively and Then, use Formula 5 to calculate the tensile strength change rate σ%.

[0144]

[0145] In the formula, i---the number of the rubber spline.

[0146] (4) Elongation at break change rate: Using the same calculation method as the tensile strength change rate, calculate the average elongation at break of this kind of rubber spline before and after the reaction respectively and Finally, calculate the elongation at break change rate ε%.

[0147]

[0148] In the formula, L---the original length of the rubber spline;

[0149] L0---the fracture gauge length of the rubber spline.

[0150] Optionally, the judgment criterion for incompatible test results is: for the rubber test sample: mass change rate ≤ 5%, volume change rate ≤ 15%, hardness change rate ≤ 8, tensile strength change rate ≤ 20%, and elongation at break change rate ≤ 20%.

[0151] Thus, the present invention provides for the first time a compatibility test device and method for low- and high-boiling gas fire extinguishing agents and elastomer materials under high pressure and alternating high and low temperature conditions. The test device provided by the present invention is simple to operate, has a high degree of automation, can perform time-controlled temperature cycling refrigeration and heating in program segments, can meet the test requirements of gas fire extinguishing agents under alternating conditions of 0 - 12.5 MPa and 0 - 100 °C, and has good accuracy and stability.

[0152] The embodiments of the present invention will be described in detail below. The following described embodiments are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0153] Embodiment 1

[0154] Compatibility test of low-boiling gas fire extinguishing agent octafluoro-2-butene and elastomer material

[0155] In this embodiment, the elastomeric material refers to four kinds of rubbers, namely nitrile rubber, silicone rubber, fluororubber, and ethylene propylene diene monomer rubber. The specifications are all dumbbell-shaped national standard 1A type specimens with a length of 10 cm and a thickness of 2 mm. Three specimens of each rubber are selected for the experiment.

[0156] I. Preparation before the experiment

[0157] ① Cleaning of rubber specimens

[0158] Before using the rubber specimens, wipe the surface with alcohol cotton balls to remove any possible adhering impurities, and dry them in a 25°C air-blowing dryer for 30 minutes.

[0159] ② Weighing of rubber specimens

[0160] Use an electronic balance with a precision of 0.1 mg to weigh the rubber specimens after cleaning and drying respectively, and record the mass m0.

[0161] ③ Measurement of rubber specimen dimensions

[0162] Use a vernier caliper to measure the length, width, and thickness of the rubber specimens after cleaning and drying respectively, and record the corresponding dimensions.

[0163] ④ Measurement of rubber specimen hardness

[0164] Use a digital display Shore hardness tester to measure three position points of the rubber specimens after cleaning and drying respectively, and record the hardness values.

[0165] ⑤ Measurement of rubber specimen tensile properties

[0166] Use a universal testing machine to characterize the tensile strength σ0 and elongation at break ε0 of the rubber specimens after cleaning and drying respectively.

[0167] II. Compatibility test method

[0168] For low-boiling-point gas fire extinguishing agents, to ensure that the rubber specimens are fully immersed throughout the experimental period, the reloading amount of the fire extinguishing agent is based on the amount required for full immersion in the liquid state. Considering the swelling effect of the rubber specimens during the experiment, the height of the fire extinguishing agent in the liquid state should be 1.25 times the length of the rubber sample. A reaction kettle with an inner diameter of 8 cm and a height of 20 cm is selected for the experiment. Calculate the volume of the fire extinguishing agent used as: π * 4 2 * 10 * 1.25 = 628 cm 3 .

[0169] For the full immersion experiment, the kettle pressure needs to be maintained at 4.2 MPa. A temperature alternating experiment from 0 to 50°C is carried out with a cycle of 24 hours for 3 times, and after 144 hours, the temperature is adjusted to 25°C for a 24-hour normal temperature experiment. The total experimental duration is 168 hours.

[0170] The specific experimental process includes:

[0171] S10. Twelve rubber splines of four types are fixed on the sample fixture in a certain order with Teflon screws; the fixture is gently placed in the reaction kettle to ensure no collision with the inner wall of the container; the reaction kettle is tightened;

[0172] S20. Place the steel cylinder of octafluoro-2-butene gas fire extinguishing agent on the electronic scale, open the valve, and fill about 1050 g of the gas fire extinguishing agent into the reaction kettle through the ventilation pipeline, observe and record the pressure of the reaction kettle;

[0173] S30. Set the program segments of temperature and operation time in the reaction kettle control system, maintain at 50 °C for 24 hours, 0 °C for 24 hours, repeat 3 times and then switch to maintain at 25 °C for 24 hours, for a total of 7 days;

[0174] S40. Fill the low-temperature constant temperature bath with methanol solution, and turn on the heating, refrigeration, and circulation functions of the reaction kettle control system;

[0175] S50. After the temperature stabilizes at 50 °C and the pressure of the reaction kettle stabilizes, continue to fill with nitrogen to pressurize to 4.2 MPa;

[0176] S60. Conduct a temperature cycling experiment. Observe the pressure change each time the temperature is switched. When the pressure exceeds or is less than 4.2 MPa, adjust it in time by relieving pressure or filling with nitrogen to ensure that the pressure is maintained at 4.2 MPa;

[0177] S70. After 7 days, the reaction ends. Open the pressure relief valve to collect the gas at the pressure relief port. Ensure that the temperature and pressure of the reaction kettle drop to the safe range and then turn off the power switch;

[0178] S80. Open the reaction kettle, take out the rubber splines and repeatedly clean the reaction kettle and then dry it.

[0179] III. Post-experiment sample treatment and characterization

[0180] ① Take out the rubber splines after the reaction and place them in a clean watch glass. Wipe the upper and lower surfaces with alcohol cotton balls to remove the possibly adhered gas fire extinguishing agent, and dry them in a 25 °C blast dryer for 30 min.

[0181] ② Immediately conduct relevant characterizations such as mass, hardness, tensile, and morphology on the dried rubber splines. If the characterizations cannot be carried out in time, the splines should be classified and packed in sealed bags and stored in a desiccator.

[0182] Mass: The rubber sample should be weighed using an analytical balance with an accuracy of 0.1 mg, and record the mass m;

[0183] Hardness: Measure the hardness value of the rubber splines using a digital display Shore hardness tester.

[0184] Mechanical properties: The tensile strength σ and elongation at break ε of each rubber specimen were measured using a universal testing machine respectively.

[0185] Macroscopic morphology: The macroscopic morphology of the rubber samples was photographed using a high-precision camera.

[0186] Microscopic morphology: The surface morphology of the specimens could be characterized using a scanning electron microscope (SEM).

[0187] Infrared spectrum: To characterize the changes in functional groups in the rubber specimens.

[0188] Gas chromatography-mass spectrometry: To measure the composition of the residual liquid / gas in the reaction vessel, and to identify the decomposition products and percentages of the gaseous fire extinguishing agent, etc.

[0189] Example 2

[0190] Compatibility test of the high-boiling gaseous fire extinguishing agent cis-1,1,1,4,4,4-hexafluoro-2-butene with elastomeric materials

[0191] In this example, the elastomeric materials are the same as those in Example 1, referring to four types of rubbers: nitrile rubber, silicone rubber, fluororubber, and ethylene propylene diene monomer rubber. The specifications are dumbbell-shaped national standard 1A specimens with a length of 10 cm and a thickness of 2 mm. Three specimens of each rubber were selected for the experiment.

[0192] I. Preparation before the experiment

[0193] The steps of cleaning, weighing, measuring the dimensions and hardness of the rubber specimens in this example were the same as those in Example 1, and the data of tensile strength and elongation at break were those in Example 1.

[0194] II. Compatibility test method

[0195] For the high-boiling gaseous fire extinguishing agent, to ensure that the rubber specimens were fully immersed throughout the experimental period, considering the swelling effect of the rubber specimens during the experiment, the filling height of the fire extinguishing agent should be 1.25 times the length of the rubber samples. A reaction kettle with an inner diameter of 8 cm and a height of 20 cm was selected for the experiment, and the volume of the fire extinguishing agent used was calculated as: π * 4 2 * 10 * 1.25 = 628 cm 3 .

[0196] For the full-immersion experiment, the kettle pressure should be maintained at 4.2 MPa. A temperature cycling experiment from 0 to 50 °C was carried out with a cycle of 24 hours for 3 times, and after 144 h, the temperature was adjusted to 25 °C for a 24-hour room temperature experiment. The total experimental duration was 168 h.

[0197] The specific experimental process included:

[0198] S10. Fix 12 splines of 4 types of rubber to the sample fixture in a certain order with Teflon screws; gently place the fixture in the reaction kettle to ensure no collision with the inner wall of the container;

[0199] S20. Pour about 850 g of gaseous fire extinguishing agent along the edge of the reaction kettle container to ensure that the rubber samples are stable without collision and completely immersed in the fire extinguishing agent; tighten the reaction kettle;

[0200] S30. Set the program segments of temperature and running time in the reaction kettle control system, maintain at 50 °C for 24 hours, maintain at 0 °C for 24 hours, repeat 3 times and then switch to maintain at 25 °C for 24 hours, for a total of 7 days;

[0201] S40. Fill the low-temperature constant temperature bath with ethylene glycol solution, and turn on the heating, refrigeration, and circulation functions of the reaction kettle control system;

[0202] S50. After the temperature stabilizes at 50 °C, observe the pressure change in the reaction kettle, and charge nitrogen to pressurize to 4.2 MPa;

[0203] S60. Conduct a temperature cycling experiment. Pay attention to observing the pressure change each time the temperature is switched. When the pressure exceeds or is less than 4.2 MPa, fine-tune it in time by releasing pressure or charging nitrogen to ensure that the pressure is maintained at 4.2 MPa;

[0204] S70. After 7 days, the reaction ends. Ensure that the temperature and pressure of the reaction kettle drop to the safe range, and turn off the power switch;

[0205] S80. Open the reaction kettle, take out the rubber splines and the fire extinguishing agent, and repeatedly clean the reaction kettle and then dry it.

[0206] III. Post-experiment sample treatment and characterization

[0207] The steps of post-experiment sample treatment and characterization in this embodiment are the same as those in Embodiment 1 and will not be elaborated here.

[0208] The parts not detailed in the description of the present invention are well-known technologies to those skilled in the art.

[0209] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features.

[0210] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0211] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A compatibility test system for a gas fire extinguishing agent and an elastic material, characterized in that, The test system includes: A reaction device system, which includes a reaction device and a refrigeration and heating device. A fixture for fixing an elastic material is provided inside the reaction device, and the refrigeration and heating device is connected to the reaction device; A feeding device, which includes a first gas fire extinguishing agent storage tank and a second gas fire extinguishing agent storage tank. The boiling point of the first gas fire extinguishing agent in the first gas fire extinguishing agent storage tank is lower than that of the second gas fire extinguishing agent in the second gas fire extinguishing agent storage tank; the reaction device is respectively connected to the first gas fire extinguishing agent storage tank and the second gas fire extinguishing agent storage tank; A pressurizing device, which is connected to the reaction device.

2. The gas fire extinguishing agent and elastic material compatibility testing system according to claim 1, wherein The pressurizing device includes a high-pressure nitrogen container, and the output end of the high-pressure nitrogen container is connected to the air inlet of the reaction device through a first pipeline; And / or, the refrigeration and heating device includes a low-temperature constant temperature bath, and the low-temperature constant temperature bath is respectively connected to the medium inlet and the medium outlet of the reaction device through two pipelines.

3. The gas fire extinguishing agent and elastic material compatibility testing system according to claim 1, characterized in that The boiling point of the first gas fire extinguishing agent is lower than 25°C, and the first gas fire extinguishing agent is a gas fire extinguishing agent that is gaseous at 25°C; And / or, the boiling point of the second gas fire extinguishing agent is higher than 25°C, and the second gas fire extinguishing agent is a liquid gas fire extinguishing agent at 25°C; And / or, the elastic material includes a rubber part, and the rubber part includes a dumbbell-shaped rubber part.

4. The gas fire extinguishing agent and elastic material compatibility testing system according to claim 1, characterized in that Electronic scales are respectively arranged below the first gas fire extinguishing agent storage tank and the second gas fire extinguishing agent storage tank.

5. The gas fire extinguishing agent and elastic material compatibility testing system according to any one of claims 1 to 4, characterized in that The output end of the first gas fire extinguishing agent storage tank is connected to the feeding port of the reaction device through a second pipeline; The output end of the second gas fire extinguishing agent storage tank is connected to the feeding port of the reaction device through a third pipeline; A first electromagnetic valve is provided on the second pipeline, and a second electromagnetic valve is provided on the third pipeline.

6. The gas fire extinguishing agent and elastic material compatibility testing system according to claim 5, wherein The test system further includes a control device; The control device is respectively connected to the reaction device and the refrigeration and heating device through communication lines; The control device is also respectively connected to the first electromagnetic valve and the second electromagnetic valve through communication lines; A valve is provided on the pipeline connecting the pressurizing device and the reaction device, and the control device is also connected to the valve through a communication line.

7. A method for testing the compatibility of a gaseous fire extinguishing agent with an elastic material, characterized in that, The test method includes: Fixing the elastic material to be tested inside the reaction device through a fixture; Injecting a fire extinguishing agent into the reaction device; Turning on the refrigeration and heating device connected to the reaction device to regulate the temperature of the reaction device; After the temperature of the reaction device rises to the set value and the pressure of the reaction device is stable, pressurizing the reaction device with high-pressure gas in the pressurizing device so that the pressure of the reaction device reaches the experimental set standard; Performing a full-immersion experiment on the elastic material to be tested under high pressure and alternating high and low temperatures; Taking out the elastic material after soaking and obtaining results according to the physical and chemical properties of the elastic material; Among them, injecting the fire extinguishing agent into the reaction device includes: When conducting the compatibility test of the first gaseous fire extinguishing agent with the elastic material, place the first gaseous fire extinguishing agent storage tank on an electronic scale, measure the initial mass m0 of the first gaseous fire extinguishing agent, open the first solenoid valve, and close the second solenoid valve. Then, introduce the first gaseous fire extinguishing agent into the reaction device and observe the mass m displayed on the electronic scale. i , where i represents different moments. When the mass of the introduced first gaseous fire extinguishing agent (m0 - m i ) meets the requirement for full immersion of the test sample, close the first solenoid valve.

8. The method for testing the compatibility of a gaseous fire extinguishing agent with an elastic material according to claim 7, characterized in that, Injecting the fire extinguishing agent into the reaction device further includes: When conducting the compatibility test of the second gaseous fire extinguishing agent with the elastic material, place the second gaseous fire extinguishing agent storage tank on an electronic scale, measure the initial mass m0 of the second gaseous fire extinguishing agent, open the second solenoid valve, and close the first solenoid valve. Inject the second gaseous fire extinguishing agent into the reaction device, and use the electronic scale to measure the remaining mass m of the second gaseous fire extinguishing agent storage tank i , where i represents the weighing times. When the mass of the injected second gaseous fire extinguishing agent (m0 - m i ) meets the requirements for at least fully submerging the test samples, close the second solenoid valve.

9. The gas fire extinguishing agent and elastic material compatibility test method according to claim 7 or 8, characterized in that The reaction device is installed in a constant temperature test room of 20°C ± 5°C; and / or, the mass of the first gaseous fire extinguishing agent or the mass of the second gaseous fire extinguishing agent in the reaction device m0 - m i = 1.2 * (ρ * πr 2 * l) ~ 1.5 * (ρ * πr 2 * l), where ρ is the density of the gaseous fire extinguishing agent, in g / cm 3 ; r is the radius of the reaction device, in cm; l is the length of the elastic material, in cm; And / or, the experimental set standard for the pressure of the reaction device is 2.5 Mpa to 5.6 Mpa; preferably 4.2 Mpa; And / or, the high and low temperature alternating conditions include: maintaining at 50±0.5°C and 0±0.5°C for 24 hours each in turn and alternating, after cycling multiple times, maintaining at 25±0.5°C for 24 hours, and cycling several times; And / or, the experimental period of the elastic material test sample is 7 days.

10. The method for testing the compatibility of a gaseous fire extinguishing agent with an elastic material according to claim 7 or 8, characterized in that, The high pressure and high and low temperature alternating conditions include alternating conditions of 0 to 12.5 MPa and 0 to 100°C; And / or, the results obtained according to the physical and chemical properties of the elastic material include: After the test is completed, compare the physical and chemical property parameters before and after the experiment with reference to Standard GB / T 14832-2008 to evaluate the compatibility, where the physical and chemical property parameters include one or more of mass, hardness, tensile strength change rate, and elongation at break change rate.

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