Device for testing safe explosion venting plate during burning and explosion of mixed gas and use method of device

Abstract

The invention provides a mixed gas burning explosion safety explosion venting plate testing device and a using method, the testing device is provided with at least two feeding units, at least one feeding unit is used for conveying gas into a storage tank, and at least one feeding unit is used for conveying an inhibitor into the storage tank, so that the mixed gas burning explosion safety explosion venting plate can be tested. The two feeding units can be controlled at the same time or respectively to convey gas and an inhibitor into the storage tank, and the conveying amount of the gas and the inhibitor can be monitored, so that the proportion of the gas and the inhibitor is regulated and controlled in real time; gas in the storage tank can be burnt and exploded by controlling the chemical ignition head, and gas pressure, gas concentration and the like in the storage tank before and after burning and explosion can be monitored in real time through the monitoring system and the control system. The safe explosion venting plate testing device can accurately and effectively test safe explosion venting plates under different gas pressures, different gas concentrations and different proportions of gas and inhibitors.

Description

Technical Field

[0001] The present application relates to the technical field of safety explosion relief panel testing devices, and in particular to a mixed gas explosion safety explosion relief panel testing device and a method for using the same. Background Art

[0002] With the promotion of the concept of energy conservation and emission reduction and the development plan of the "hydrogen energy" industry, the use of existing natural gas pipelines to transport hydrogen is a means of balancing efficiency and environmental protection. Therefore, in the actual production process, the transportation method of mixed gas mixed with hydrogen and natural gas will be more common, and there is less research on the applicability of explosion safety venting plates for this mixture. In addition, in the actual production process, explosion inhibitors are often installed in key confined spaces such as valve rooms, and the spraying of the inhibitors may affect the screening of safety explosion venting plates. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a mixed gas explosion safety venting panel testing device and a method of use.

[0004] Based on the above purpose, the first aspect of the present application provides a mixed gas explosion safety venting plate testing device, comprising:

[0005] Storage tank, with a safety explosion relief plate installed on the top;

[0006] A feeding system, comprising at least two feeding units, each of which is connected to the storage tank;

[0007] A monitoring system, located in the storage tank, for monitoring gas parameters in the storage tank;

[0008] The control system is located outside the storage tank and connected to the monitoring system for controlling the monitoring system.

[0009] Optionally, at least one of the feeding units includes a gas storage tank and a gas pipeline, the gas pipeline is connected to both the gas storage tank and the storage tank, and a mass flow meter is also provided on the gas pipeline.

[0010] Optionally, at least one of the feed units comprises an inhibitor storage tank and an inhibitor pipeline, wherein the inhibitor pipeline is connected to both the inhibitor storage tank and the storage tank, and a mass flow meter and a solenoid valve are further provided on the inhibitor pipeline.

[0011] Optionally, the monitoring system includes a pressure sensor, a chemical ignition head and a concentration sensor arranged at intervals, the pressure sensor is located in the lower part of the storage tank, the concentration sensor is located in the upper part of the storage tank, and the chemical ignition head is located between the pressure sensor and the concentration sensor.

[0012] Optionally, the control system includes a concentration memory, a synchronization trigger, a data collector and a storage unit, the concentration memory is connected to the concentration sensor, the synchronization trigger is connected to the chemical ignition head and the data collector, the pressure sensor is connected to the data collector, and the data collector and the concentration memory are both connected to the storage unit.

[0013] A second aspect of the present application provides a method for using a mixed gas explosion safety venting plate testing device, comprising:

[0014] Step S100, controlling one of the feeding units to deliver the mixed gas into the storage tank until the gas concentration in the storage tank reaches a preset concentration;

[0015] Step S200, controlling another feeding unit to spray an inhibitor into the storage tank until the ratio of the injection amount of the inhibitor to the gas concentration reaches a preset ratio;

[0016] Step S300, igniting the storage tank through the control system and the monitoring system to cause the mixed gas to explode, and monitoring the pressure in the storage tank in real time;

[0017] Step S400: determining the integrity coefficient of the safety explosion relief panel on the top of the storage tank based on a preset integrity coefficient library.

[0018] Optionally, it also includes:

[0019] A target preset ratio and a target gas concentration are determined based on the integrity coefficient, and a mapping database is established based on the target gas concentration, the target preset ratio, the pressure, and the thickness of the safety explosion relief panel.

[0020] Optionally, determining a target preset ratio and a target gas concentration based on the complete coefficient includes:

[0021] In response to determining that the complete coefficient is greater than or equal to the first preset coefficient, looping through steps S100 to S400 and controlling the preset ratio in the next loop to be less than the preset ratio in the previous loop, until the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient, wherein the first preset coefficient is greater than the second preset coefficient;

[0022] The preset ratio in the last cycle is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

[0023] Optionally, determining a target preset ratio and a target gas concentration based on the complete coefficient includes:

[0024] In response to determining that the complete coefficient is greater than or equal to the first preset coefficient, looping through steps S100 to S400 and controlling the preset ratio in the next loop to be less than the preset ratio in the previous loop, until the preset ratio is zero and the complete coefficient is greater than or equal to the first preset coefficient;

[0025] Determine the preset ratio in the last cycle as the target preset ratio;

[0026] Circularly executing the steps S100 to S400 and controlling the preset concentration in the next cycle to be greater than the preset concentration in the previous cycle, until the preset concentration reaches the concentration limit value or the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient;

[0027] The preset concentration during the last cycle is determined as the target gas concentration.

[0028] Optionally, determining a target preset ratio and a target gas concentration based on the complete coefficient includes:

[0029] In response to determining that the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient, the preset ratio is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

[0030] From the above, it can be seen that the mixed gas explosion safety venting plate testing device and use method provided in the present application are provided with at least two feeding units, wherein at least one feeding unit is used to deliver gas into the storage tank, and at least one feeding unit is used to deliver inhibitor into the storage tank. In this way, the two feeding units can be controlled simultaneously or separately to deliver gas and inhibitor into the storage tank, and the delivery amount of gas and inhibitor can be monitored to perform real-time regulation on the ratio of gas and inhibitor; the gas in the storage tank can be exploded by controlling the chemical ignition head, and the gas pressure, gas concentration, etc. in the storage tank before and after the explosion can be monitored in real time by the monitoring system and control system, so as to accurately and effectively test the safety explosion venting plate under different gas pressures, different gas concentrations, and different ratios of gas and inhibitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 This is a schematic structural diagram of a mixed gas explosion safety venting plate testing device according to an embodiment of the present application;

[0033] Figure 2 It is a flow chart of the method of using the mixed gas explosion safety venting panel testing device according to an embodiment of the present application.

[0034] In the figure: 1. Storage tank; 11. Safety explosion relief panel; 2. Feeding system; 21. Feeding unit; 211. Gas storage tank; 212. Mass flow meter; 213. Gas pipeline; 214. Inhibitor storage tank; 215. Solenoid valve; 216. Inhibitor pipeline; 3. Monitoring system; 31. Concentration sensor; 32. Chemical ignition head; 33. Pressure sensor; 4. Control system; 41. Concentration storage device; 42. Synchronous trigger; 43. Data acquisition device; 44. Storage unit. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0036] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] With the promotion of the concept of energy conservation and emission reduction and the development plan of the "hydrogen energy" industry, the transportation of hydrogen using existing natural gas pipelines is a means of balancing efficiency and environmental protection. Therefore, in the actual production process, the transportation method of mixed gas mixed with hydrogen and natural gas will be more common, and there are fewer studies on the applicability of explosion safety venting plates for this mixture. In addition, in the actual production process, explosion inhibitors are often installed in key confined spaces such as valve rooms. After the inhibitors are sprayed, they may affect the screening of safety venting plates (common inhibitors include inert gases, fine water mist, halogenated hydrocarbons, non-metallic oxides and metal mesh materials, etc.).

[0038] A safety vent is a safety device that automatically opens or ruptures under certain conditions to release internal pressure. There are two main types of tests for safety vents in related technologies. One is a static test, where the vent is installed on a test bench, and hydraulic or pneumatic equipment is used to gradually increase the pressure, and the actual bursting pressure of the vent is recorded. The other is a dynamic test, which generally uses a specific device for rapid pressure increase (such as a pressure pulse generator) to quickly increase the pressure in the test container to the design pressure in a very short time.

[0039] Although the above operation methods can realize the test research of safety explosion venting panels under different situations, they have the following shortcomings: 1) At present, dynamic tests on safety explosion venting panels in closed spaces of natural gas mixed with hydrogen are relatively scarce; 2) In the actual engineering field, explosion inhibitors may be sprayed into key confined spaces, while the screening tests on safety explosion venting panels under the coupled explosion action of inhibitors and explosion gases are relatively blank.

[0040] For the mixture of natural gas and hydrogen, different concentrations of the mixed gas, different ratios of natural gas and hydrogen, and different amounts of inhibitor injection will have a certain degree of impact on the screening and testing of safety explosion vents. Therefore, testing the pressure-bearing capacity of safety explosion vents that explode in confined spaces with hydrogen-mixed natural gas or after adding inhibitors of different ratios is an extremely complicated process, but it is also a problem that needs to be solved urgently.

[0041] Based on this, see Figure 1 The present application provides a mixed gas explosion safety venting plate 11 testing device, comprising:

[0042] The storage tank 1 is provided with a safety explosion relief plate 11 on the top;

[0043] A feeding system 2, comprising at least two feeding units 21, each of the feeding units 21 being connected to the storage tank 1;

[0044] A monitoring system 3, located in the storage tank 1, for monitoring gas parameters in the storage tank 1;

[0045] The control system 4 is located outside the storage tank 1 and connected to the monitoring system 3 for controlling the monitoring system 3 .

[0046] Specifically, the feeding system 2 includes at least two feeding units 21 , each of which is connected to the storage tank 1 and is used to transport gas and / or inhibitor into the storage tank 1 .

[0047] At least one of the at least two feeding units 21 includes a gas storage tank 211 and a gas pipeline 213, wherein the gas pipeline 213 is connected to both the gas storage tank 211 and the storage tank 1, and the gas pipeline 213 can transport the gas in the gas storage tank 211 to the storage tank 1. A mass flow meter 212 is also provided on the gas pipeline 213 to monitor and control the mass flow of the gas transported to the storage tank 1.

[0048] The gas storage tank 211 stores a single gas or a mixed gas.

[0049] Furthermore, the gas pipeline 213 and the gas storage tank 211 are detachably connected. In actual use, the gas storage tank 211 can be replaced as needed to change the type of gas delivered to the storage tank 1.

[0050] At least one of the at least two feeding units 21 includes an inhibitor storage tank 214 and an inhibitor pipeline 216, wherein the inhibitor pipeline 216 is connected to both the inhibitor storage tank 214 and the storage tank 1, and the gas pipeline 213 can transport the inhibitor in the inhibitor storage tank 214 to the storage tank 1. A mass flow meter is also provided on the inhibitor pipeline 216 to monitor and control the mass flow of the inhibitor transported to the storage tank 1. A solenoid valve 215 is also provided on the inhibitor pipeline 216, and the solenoid valve 215 is used to control the opening and closing of the inhibitor pipeline 216.

[0051] In this way, among the at least two feeding units 21, at least one feeding unit 21 is used to deliver gas into the storage tank 1, and at least one feeding unit 21 is used to deliver inhibitor into the storage tank 1. In this way, the two feeding units 21 can be controlled simultaneously or separately to deliver gas and inhibitor into the storage tank 1, and the delivery amounts of gas and inhibitor can be monitored to adjust the ratio of gas and inhibitor in real time.

[0052] The monitoring system 3 is located in the storage tank 1 and is used to monitor the gas parameters in the storage tank 1. The monitoring system 3 includes a pressure sensor 33, a chemical ignition head 32 and a concentration sensor 31 arranged at intervals. The pressure sensor 33 is located in the lower part of the storage tank 1 and is used to monitor the gas pressure in the storage tank 1. The concentration sensor 31 is located in the upper part of the storage tank 1 and is used to monitor the gas concentration in the storage tank 1. The chemical ignition head 32 is located between the pressure sensor 33 and the concentration sensor 31 and is used to ignite the gas in the storage tank 1 so that the gas in the storage tank 1 explodes.

[0053] The control system 4 is located outside the storage tank 1, connected to the monitoring system 3, and used to control the monitoring system 3. The control system 4 includes a concentration memory 41, a synchronization trigger 42, a data collector 43, and a storage unit 44. The concentration memory 41 is connected to the concentration sensor 31, and is used to store and display the gas concentration in the storage tank 1 monitored by the concentration sensor 31. The synchronization trigger 42 is connected to the chemical ignition head 32 and the data collector 43, and is used to control the chemical ignition head 32 to ignite in the storage tank 1 so that the gas in the storage tank 1 explodes. At the same time, the data collector 43 collects the ignition data of the synchronization trigger 42. The pressure sensor 33 is connected to the data collector 43, and the data collector 43 is used to receive the gas pressure in the storage tank 1 monitored by the pressure sensor 33. The data collector 43 and the concentration memory 41 are both connected to the storage unit 44, and the storage unit 44 is used to store the data collected and displayed in the data collector 43 and the concentration memory 41.

[0054] Exemplarily, the concentration memory 41 may be a concentration host, and the storage unit 44 may be a computer.

[0055] Furthermore, the testing device also includes a vacuum pump for evacuating the storage tank 1 to extract the residual gas and residue in the storage tank 1 to facilitate the next test.

[0056] In the present application, at least two feeding units 21 are provided, wherein at least one feeding unit 21 is used to deliver gas into the storage tank 1, and at least one feeding unit 21 is used to deliver inhibitor into the storage tank 1. In this way, the two feeding units 21 can be controlled simultaneously or separately to deliver gas and inhibitor into the storage tank 1, and the delivery amounts of gas and inhibitor can be monitored to adjust the ratio of gas and inhibitor in real time; the gas in the storage tank 1 can be ignited and exploded by controlling the chemical ignition head 32, and the gas pressure, gas concentration, etc. in the storage tank 1 before and after the explosion can be monitored in real time by the monitoring system 3 and the control system 4, so as to accurately and effectively test the safety explosion relief plate 11 under different gas pressures, different gas concentrations, and different ratios of gas and inhibitor.

[0057] See also Figure 2 The present application also provides a method for using a mixed gas explosion safety venting plate 11 testing device, including:

[0058] Step S100, controlling one of the feeding units 21 to deliver the mixed gas into the storage tank 1 until the gas concentration in the storage tank 1 reaches a preset concentration;

[0059] Step S200, controlling another feeding unit 21 to spray an inhibitor into the storage tank 1 until the ratio of the injection amount of the inhibitor to the gas concentration reaches a preset ratio;

[0060] Step S300, igniting the storage tank 1 through the control system 4 and the monitoring system 3 to cause the mixed gas to explode, and monitoring the pressure in the storage tank 1 in real time;

[0061] Step S400: determining the integrity coefficient of the safety explosion relief panel 11 on the top of the storage tank 1 based on a preset integrity coefficient library.

[0062] Specifically, first, one of the feed units 21 is controlled to deliver the mixed gas into the storage tank 1 until the gas concentration in the storage tank 1 reaches a preset concentration. The preset concentration is a relatively safe concentration of the preset mixed gas, but the preset concentration is not the upper limit of the safe concentration range. Exemplarily, the safe concentration range of the mixed gas is A to B, then the preset concentration can be selected as a concentration value between A and B, so that the test is started from an intermediate concentration value, which can ensure the safety of the test without increasing the test time too much.

[0063] Secondly, another feeding unit 21 is controlled to spray the inhibitor into the storage tank 1 until the ratio of the injection amount of the inhibitor to the gas concentration reaches a preset ratio. The preset ratio is the maximum ratio of the preset injection amount to the gas concentration. In this way, when the test experiment begins, the injection amount of the added inhibitor is the maximum amount under the gas concentration, so as to ensure the safety of the test as much as possible and avoid safety hazards caused by gas explosion.

[0064] Thirdly, the control system 4 and the monitoring system 3 are used to ignite the storage tank 1 to cause the mixed gas to explode, and the pressure in the storage tank 1 is monitored in real time.

[0065] Finally, based on the preset complete coefficient library, the complete coefficient of the safety explosion relief panel 11 on the top of the storage tank 1 is determined.

[0066] The preset complete coefficient library is a preset database for storing the mapping relationship between the complete condition of the safety explosion relief panel 11 and the corresponding complete coefficient. Different complete coefficients will correspond to different complete conditions of the safety explosion relief panel 11 in the preset complete coefficient library. The better the complete condition of the safety explosion relief panel 11, the greater the safety factor.

[0067] Exemplarily, when the safety explosion venting plate 11 is very complete and has no cracks, the corresponding safety factor can be 5; when the safety explosion venting plate 11 is basically complete and has only a few cracks, the corresponding safety factor can be 4; when the safety explosion venting plate 11 is mostly intact with a small number of cracks, the corresponding safety factor can be 3; when the safety explosion venting plate 11 is mostly broken and has more cracks, the corresponding safety factor can be 2; when the safety explosion venting plate 11 is basically completely broken, the corresponding safety factor can be 1.

[0068] In the present application, after the control system 4 and the monitoring system 3 ignite the storage tank 1 to cause the mixed gas to explode, the pressure in the storage tank 1 is monitored in real time. During and after the gas explosion, the integrity of the safety explosion relief plate 11 is observed. Based on a preset integrity coefficient library, the integrity coefficient of the top of the storage tank 1 is determined to test the safety explosion relief plate 11 at the current gas concentration, the ratio of the current injection amount of the inhibitor to the gas concentration, the current pressure and the current thickness of the safety explosion relief plate 11, thereby evaluating the pressure-bearing capacity of the safety explosion relief plate 11.

[0069] When the integrity coefficient of the safety explosion venting plate 11 finally determined is high, it means that the safety explosion venting plate 11 of current thickness can fully bear the current gas concentration, the ratio of the current injection amount of the inhibitor to the gas concentration and the gas explosion under the current pressure; when the integrity coefficient of the safety explosion venting plate 11 finally determined is low, it means that the safety explosion venting plate 11 of current thickness is not enough to bear the current gas concentration, the ratio of the current injection amount of the inhibitor to the gas concentration and the gas explosion under the current pressure, and it is necessary to replace the thicker safety explosion venting plate 11 for testing to finally determine the thickness of the safety explosion venting plate 11 that can bear the current gas concentration, the ratio of the current injection amount of the inhibitor to the gas concentration and the gas explosion under the current pressure.

[0070] In some embodiments, the method further includes: determining a target preset ratio and a target gas concentration based on the integrity coefficient, and establishing a mapping database based on the target gas concentration, the target preset ratio, the pressure, and the thickness of the safety explosion relief panel 11 .

[0071] Specifically, after establishing a mapping database based on the target gas concentration, the target preset ratio, the pressure and the thickness of the safety explosion venting plate 11, in actual use, the thickness of the safety explosion venting plate 11 that matches the actual environment can be determined from the mapping database based on the actual gas concentration, the ratio of the actual injection amount of the inhibitor to the gas concentration, and the actual pressure, so as to facilitate the actual transportation and storage of the mixed gas and improve the safety of the mixed transportation and storage.

[0072] In some embodiments, determining the target preset ratio and the target gas concentration based on the integrity coefficient includes:

[0073] In response to determining that the complete coefficient is greater than or equal to the first preset coefficient, looping through steps S100 to S400 and controlling the preset ratio in the next loop to be less than the preset ratio in the previous loop, until the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient, wherein the first preset coefficient is greater than the second preset coefficient;

[0074] The preset ratio in the last cycle is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

[0075] Specifically, the first preset coefficient is a preset very safe integrity coefficient, and the second preset coefficient is a critical value of a preset basically safe integrity coefficient.

[0076] When the integrity coefficient is greater than or equal to the first preset coefficient, it means that the safety coefficient of the safety explosion relief plate 11 is very high at this time, and the safety explosion relief plate 11 can fully bear the gas explosion under the current conditions. When the integrity coefficient is less than the first preset coefficient and greater than the second preset coefficient, it means that the safety coefficient of the safety explosion relief plate 11 is at a critical value of basic safety at this time, and the safety explosion relief plate 11 can basically bear the gas explosion under the current conditions. When the integrity coefficient is less than or equal to the second preset coefficient, the safety explosion relief plate 11 cannot bear the gas explosion under the current conditions. In actual use, a thicker safety explosion relief plate 11 needs to be replaced.

[0077] Therefore, in the present application, when it is determined that the integrity coefficient is greater than or equal to the first preset coefficient, it means that the safety coefficient of the safety explosion relief plate 11 is very high at this time, and the safety explosion relief plate 11 can fully bear the gas explosion under the current conditions. Then, the injection amount of the injected inhibitor can be reduced at this time to further test whether the current thickness of the safety explosion relief plate 11 can continue to bear the gas explosion under the condition of low inhibitor injection amount.

[0078] Therefore, the steps S100 to S400 are executed cyclically and the preset ratio in the next cycle is controlled to be smaller than the preset ratio in the previous cycle, until the complete coefficient is smaller than the first preset coefficient and larger than the second preset coefficient. At this time, it is indicated that the safety factor of the safety explosion relief panel 11 is at a critical value of basic safety, and the safety explosion relief panel 11 can basically bear the gas explosion under the current conditions. Then, the preset ratio in the last cycle is the minimum preset ratio that the current safety explosion relief panel 11 can bear, and the current gas concentration is the maximum gas concentration that the current safety explosion relief panel 11 can bear. Therefore, the preset ratio in the last cycle is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

[0079] It is worth noting that before each cycle, the tank is first evacuated by a vacuum pump to prevent the gas and residue from the previous cycle from affecting the next cycle, thereby improving the accuracy of the test.

[0080] In the present application, when it is determined that the integrity coefficient is greater than or equal to the first preset coefficient, it means that the safety coefficient of the safety explosion relief plate 11 is very high at this time, and the safety explosion relief plate 11 can fully bear the gas explosion under the current conditions. Then, the injection amount of the injected inhibitor can be reduced at this time to further test whether the current thickness of the safety explosion relief plate 11 can continue to bear the gas explosion under the condition of low inhibitor injection amount. In this way, the critical value of the inhibitor injection amount and gas concentration that the safety explosion relief plate 11 with the current thickness can bear can be determined through multiple cycle tests.

[0081] In some embodiments, determining the target preset ratio and the target gas concentration based on the integrity coefficient includes:

[0082] In response to determining that the complete coefficient is greater than or equal to the first preset coefficient, looping through steps S100 to S400 and controlling the preset ratio in the next loop to be less than the preset ratio in the previous loop, until the preset ratio is zero and the complete coefficient is greater than or equal to the first preset coefficient;

[0083] Determine the preset ratio in the last cycle as the target preset ratio;

[0084] Circularly executing the steps S100 to S400 and controlling the preset concentration in the next cycle to be greater than the preset concentration in the previous cycle, until the preset concentration reaches the concentration limit value or the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient;

[0085] The preset concentration during the last cycle is determined as the target gas concentration.

[0086] Specifically, when it is determined that the integrity coefficient is greater than or equal to the first preset coefficient, it means that the safety coefficient of the safety explosion relief plate 11 is very high at this time, and the safety explosion relief plate 11 can fully bear the gas explosion under the current conditions. Then, the injection amount of the injected inhibitor can be reduced at this time to further test whether the current thickness of the safety explosion relief plate 11 can continue to bear the gas explosion under the condition of low inhibitor injection amount.

[0087] Therefore, the steps S100 to S400 are executed cyclically and the preset ratio in the next cycle is controlled to be smaller than the preset ratio in the previous cycle, until the preset ratio is zero and the complete coefficient is greater than or equal to the first preset coefficient. At this time, the preset ratio has dropped to zero, indicating that the injection amount of the inhibitor is zero, but the complete coefficient is still greater than or equal to the first preset coefficient, and the safety factor of the safety venting plate 11 is still very high, and the safety venting plate 11 can fully bear the gas explosion under the current conditions.

[0088] At this time, the preset concentration may be increased to further test whether the thickness of the current safety explosion relief plate 11 can continue to bear the combustion and explosion of the gas under high gas concentration.

[0089] Therefore, the steps S100 to S400 are executed cyclically and the preset concentration in the next cycle is controlled to be greater than the preset concentration in the previous cycle, until the preset concentration reaches the concentration limit or the integrity coefficient is less than the first preset coefficient and greater than the second preset coefficient. At this time, it is indicated that the safety factor of the safety explosion relief panel 11 is at a critical value of basic safety, and the safety explosion relief panel 11 can basically bear the gas explosion under the current conditions. Then, the preset concentration in the last cycle is the maximum gas concentration that the current safety explosion relief panel 11 can bear, and the preset ratio in the last cycle is the minimum preset ratio that the current safety explosion relief panel 11 can bear. Therefore, the preset ratio in the last cycle is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

[0090] In the present application, the critical value of the amount of inhibitor injection and gas concentration that the safety explosion relief plate 11 of the current thickness can bear can be determined through multiple cycle tests.

[0091] In some embodiments, determining the target preset ratio and target gas concentration based on the complete coefficient includes: in response to determining that the complete coefficient is less than a first preset coefficient and greater than a second preset coefficient, determining the preset ratio as the target preset ratio and determining the preset concentration as the target gas concentration.

[0092] Specifically, when the integrity coefficient is less than the first preset coefficient and greater than the second preset coefficient, it means that the safety factor of the safety explosion relief plate 11 is at a basic safety critical value. At this time, the safety explosion relief plate 11 can basically bear the gas explosion under the current conditions. Then, the preset ratio of this cycle is the minimum preset ratio that the safety explosion relief plate 11 of the current thickness can bear, and the preset concentration of this cycle is the maximum concentration that the safety explosion relief plate 11 of the current thickness can bear. Therefore, the preset ratio is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

[0093] In the present application, different target preset ratios and target gas concentrations can be determined based on different integrity coefficients to accurately determine the minimum amount of inhibitor injection and the maximum gas concentration that the safety explosion relief plate 11 of the current thickness can bear, so as to facilitate subsequent practical use.

[0094] Furthermore, the mixed gas may be hydrogen-blended natural gas.

[0095] In some embodiments, the method further comprises:

[0096] Safety explosion relief plates 11 of different thicknesses and materials are installed based on the experimental purpose. Hydrogen-blended natural gas with different hydrogen blending ratios is adjusted to meet the pressure test of the safety explosion relief plate 11 under the combustion and explosion conditions of hydrogen-blended natural gas with different hydrogen blending ratios. At the same time, inhibitor storage tanks 214 with different inhibitor ratios are installed to test the pressure test of the safety explosion relief plate 11 under the coupled combustion and explosion effects of different inhibitors and hydrogen-blended natural gas.

[0097] Before the experiment begins, a chemical ignition head 32 is installed inside the storage tank 1. The vacuum pump is turned on to evacuate the storage tank 1. After the storage tank 1 is sealed, the hydrogen-blended natural gas storage tank 1 is opened, and the gas enters the storage tank 1 through the mass flow meter 212. The concentration sensor 31 records the concentration of the combustible gas inside the storage tank 1, and the concentration inside the storage tank 1 is checked in real time through the concentration host.

[0098] When the concentration reaches the specified concentration of the experimental condition, the solenoid valve 215 is remotely controlled to spray the inhibitor in the inhibitor storage tank 214 into the test tank 1. Subsequently, the chemical ignition head 32 is ignited by the synchronous trigger 42, and the pressure sensor 33 inside the tank 1 is used to collect the pressure data in the tank 1, and the data is stored through the data acquisition instrument and the computer.

[0099] After the experiment is completed, check the integrity of the safety explosion relief plate 11. If the safety explosion relief plate 11 is intact, turn on the vacuum pump to evacuate the storage tank 1. If the safety explosion relief plate 11 is damaged, check the concentration data displayed by the concentration host. When the concentration inside the storage tank 1 drops to the safety threshold, replace the safety explosion relief plate 11 manually.

[0100] Repeat the above experimental steps to conduct the experiment.

[0101] Finally, combined with the structural damage of the safety explosion relief plate 11 and the parameters transmitted to the computer, the pressure test results of the safety explosion relief plate 11 after the explosion of hydrogen-blended natural gas or the addition of inhibitors in different ratios in a confined space are analyzed to provide theoretical guidance for safe production.

[0102] The present application can conduct dynamic testing on the safety explosion relief plate 11 for natural gas mixed with hydrogen, solve the problem of being unable to explore the screening test of the safety explosion relief plate 11 under the coupled explosion action of inhibitor and explosion gas, and further provide a basis for the quantitative testing of the safety explosion relief plate 11 in large-scale confined spaces in actual production fields.

[0103] It should be noted that the method of the embodiment of the present application can be performed by a single device, such as a computer or server. The method of this embodiment can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In the case of such a distributed scenario, one of the multiple devices can only perform one or more steps in the method of the embodiment of the present application, and the multiple devices will interact with each other to complete the described method.

[0104] It should be noted that some embodiments of the present application are described above. In some cases, the actions or steps recorded in the above embodiments can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the process depicted in the accompanying drawings does not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0105] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0106] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present application, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0107] Although the present application has been described in conjunction with specific embodiments of the present application, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0108] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the present application.

Claims

1. A mixed gas explosion safety venting plate testing device, characterized in that: include: Storage tank, with a safety explosion relief plate installed on the top; A feeding system, comprising at least two feeding units, each of which is connected to the storage tank; A monitoring system, located in the storage tank, for monitoring gas parameters in the storage tank; The control system is located outside the storage tank and connected to the monitoring system for controlling the monitoring system.

2. The device according to claim 1, characterized in that At least one of the feed units comprises a gas storage tank and a gas pipeline, wherein the gas pipeline is connected to both the gas storage tank and the storage tank, and a mass flow meter is also provided on the gas pipeline.

3. The device according to claim 1, characterized in that At least one of the feed units comprises an inhibitor storage tank and an inhibitor pipeline, wherein the inhibitor pipeline is connected to both the inhibitor storage tank and the storage tank, and a mass flow meter and a solenoid valve are also provided on the inhibitor pipeline.

4. The device according to claim 1, characterized in that The monitoring system includes a pressure sensor, a chemical ignition head and a concentration sensor which are arranged at intervals. The pressure sensor is located at the lower part of the storage tank, the concentration sensor is located at the upper part of the storage tank, and the chemical ignition head is located between the pressure sensor and the concentration sensor.

5. The device according to claim 4, characterized in that The control system includes a concentration memory, a synchronization trigger, a data collector and a storage unit. The concentration memory is connected to the concentration sensor, the synchronization trigger is connected to the chemical ignition head and the data collector, the pressure sensor is connected to the data collector, and the data collector and the concentration memory are both connected to the storage unit.

6. A method for using a mixed gas explosion safety venting plate testing device, characterized in that: include: Step S100, controlling one of the feeding units to deliver the mixed gas into the storage tank until the gas concentration in the storage tank reaches a preset concentration; Step S200, controlling another feeding unit to spray an inhibitor into the storage tank until the ratio of the injection amount of the inhibitor to the gas concentration reaches a preset ratio; Step S300, igniting the storage tank through the control system and the monitoring system to cause the mixed gas to explode, and monitoring the pressure in the storage tank in real time; Step S400: determining the integrity coefficient of the safety explosion relief panel on the top of the storage tank based on a preset integrity coefficient library.

7. The method according to claim 6, characterized in that Also includes: A target preset ratio and a target gas concentration are determined based on the integrity coefficient, and a mapping database is established based on the target gas concentration, the target preset ratio, the pressure, and the thickness of the safety explosion relief panel.

8. The method according to claim 7, characterized in that The determining of the target preset ratio and the target gas concentration based on the complete coefficient comprises: In response to determining that the complete coefficient is greater than or equal to the first preset coefficient, looping through steps S100 to S400 and controlling the preset ratio in the next loop to be less than the preset ratio in the previous loop, until the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient, wherein the first preset coefficient is greater than the second preset coefficient; The preset ratio in the last cycle is determined as the target preset ratio, and the preset concentration is determined as the target gas concentration.

9. The method according to claim 7, characterized in that: The determining of the target preset ratio and the target gas concentration based on the complete coefficient comprises: In response to determining that the complete coefficient is greater than or equal to the first preset coefficient, looping through steps S100 to S400 and controlling the preset ratio in the next loop to be less than the preset ratio in the previous loop, until the preset ratio is zero and the complete coefficient is greater than or equal to the first preset coefficient; Determine the preset ratio in the last cycle as the target preset ratio; Circularly executing the steps S100 to S400 and controlling the preset concentration in the next cycle to be greater than the preset concentration in the previous cycle, until the preset concentration reaches the concentration limit value or the complete coefficient is less than the first preset coefficient and greater than the second preset coefficient, wherein the first preset coefficient is greater than the second preset coefficient; The preset concentration during the last cycle is determined as the target gas concentration.

10. The method according to claim 7, characterized in that The determining of the target preset ratio and the target gas concentration based on the complete coefficient comprises: In response to determining that the complete coefficient is less than a first preset coefficient and greater than a second preset coefficient, the preset ratio is determined as a target preset ratio, and the preset concentration is determined as the target gas concentration, wherein the first preset coefficient is greater than the second preset coefficient.

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