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CN-122017117-A - High-precision detection response non-uniform hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device and testing method thereof

CN122017117ACN 122017117 ACN122017117 ACN 122017117ACN-122017117-A

Abstract

The invention discloses a high-precision detection response heterogeneous hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device and a testing method thereof, wherein the testing device comprises a visual explosion container, a heterogeneous gas distribution system, an inerting inhibition injection system, an adjustable high-pressure ignition system, a flame propagation regulation and control system, a high-frequency temperature dynamic acquisition system, a high-frequency pressure dynamic acquisition system, a hydrogen concentration detection system, an inert gas concentration detection system, a free radical concentration acquisition system, a flame image acquisition system and a synchronous control and data acquisition system. The testing device and the testing method thereof can obtain the quantitative relation between the dynamic flame inerting suppression transient development process and the evolution mechanism, particularly the critical explosion suppression condition parameter and the multi-working-condition influence factor, and fill the blank of the non-uniform hydrogen deflagration and detonation inerting explosion suppression protection performance and the influence mechanism characterization experimental device.

Inventors

  • CAO XINGYAN
  • CHEN WEIMING
  • ZHANG MIN
  • Fan Wenfa
  • SHENG YINGXIA

Assignees

  • 南京工业大学

Dates

Publication Date
20260512
Application Date
20260120

Claims (10)

  1. 1. The high-precision detection response heterogeneous hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device is characterized by comprising a visual explosion container, a heterogeneous gas distribution system, an inerting inhibition injection system, an adjustable high-pressure ignition system, a flame propagation regulation and control system, a high-frequency temperature dynamic acquisition system, a high-frequency pressure dynamic acquisition system, a hydrogen concentration detection system, an inert gas concentration detection system, a free radical concentration acquisition system, a flame image acquisition system and a synchronous control and data acquisition system; the non-uniform gas distribution system is used for conveying hydrogen to multiple points in the visual explosion container; the system comprises an inerting suppression injection system, an adjustable high-pressure ignition system, a flame propagation regulation and control system, a high-frequency temperature dynamic acquisition system, a high-frequency pressure dynamic acquisition system, a hydrogen concentration detection system, a free radical concentration acquisition system, a synchronous control and data acquisition system, an inerting suppression injection system, an adjustable high-pressure ignition system, a free radical concentration detection system, a non-uniform gas distribution system, an inerting suppression injection system and an adjustable high-pressure ignition system, wherein the inerting suppression injection system is used for forming a multipoint injection inerting region in a visual explosion container The high-frequency temperature dynamic acquisition system, the high-frequency pressure dynamic acquisition system, the hydrogen concentration detection system, the inert gas concentration detection system, the free radical concentration acquisition system and the flame image acquisition system are in coordinated control.
  2. 2. The high-precision detection response heterogeneous hydrogen detonation and detonation inertia characteristic parameter testing device according to claim 1 is characterized in that the visual detonation container comprises a visual detonation section container (1-1), a visual inertia section container (1-2) and a visual protection section container (1-3), the visual detonation section container (1-1), the visual inertia section container (1-2) and the visual protection section container (1-3) are sequentially communicated in series, the left end of the visual detonation section container (1-1) and the right end of the visual protection section container (1-3) are closed, detonation section visual windows (2-1), 2-2) and 2-3) for observing internal states are respectively arranged on the visual detonation section container (1-1), the visual inertia section container (1-2) and the visual protection section container (1-3), and a vacuum pump (6) is arranged on the top of the visual detonation section container (1-1).
  3. 3. The high-precision detection response non-uniform hydrogen deflagration and detonation suppression feature parameter testing device according to claim 2, wherein the synchronous control and data acquisition system comprises a time sequence synchronous controller (10) and a program control and data acquisition system (11), the program control and data acquisition system (11) is electrically connected with the time sequence synchronous controller (10), the non-uniform gas distribution system, the inerting suppression injection system, the high-frequency temperature dynamic acquisition system, the high-frequency pressure dynamic acquisition system, the hydrogen concentration detection system, the inert gas concentration detection system, the free radical concentration acquisition system and the flame image acquisition system respectively, and the time sequence synchronous controller (10) is electrically connected with the non-uniform gas distribution system, the inerting suppression injection system, the adjustable high-pressure ignition system, the free radical concentration acquisition system and the flame image acquisition system respectively.
  4. 4. The high-precision detection response heterogeneous hydrogen deflagration and detonation suppression characteristic parameter testing device according to claim 3, wherein the heterogeneous gas distribution system comprises a hydrogen gas cylinder (9-3), a fifth high-sensitivity electromagnetic valve (12-5), a sixth high-sensitivity electromagnetic valve (12-6), a seventh high-sensitivity electromagnetic valve (12-7), a fifth high-precision gas flowmeter (13-5), a sixth high-precision gas flowmeter (13-6), a seventh high-precision gas flowmeter (13-7), a first hydrogen injection distribution coil (23-1), a second hydrogen injection distribution coil (23-2) and a third hydrogen injection distribution coil (23-3), wherein the first hydrogen injection distribution coil (23-1), the second hydrogen injection distribution coil (23-2) and the third hydrogen injection distribution coil (23-3) are installed in a visual detonation section container (1-1) at intervals, and three hydrogen injection inlets are communicated with the first hydrogen injection distribution coil (23-1), the second hydrogen injection distribution coil (23-2) and the third hydrogen injection distribution coil (23-3) respectively, the hydrogen gas cylinder (9-3) is respectively communicated with three hydrogen injection ports through three hydrogen delivery pipes, a fifth high-sensitivity electromagnetic valve (12-5) and a fifth high-precision gas flowmeter (13-5) are connected in series on the first hydrogen delivery pipe, a sixth high-sensitivity electromagnetic valve (12-6) and a sixth high-precision gas flowmeter (13-6) are connected in series on the second hydrogen delivery pipe, a seventh high-sensitivity electromagnetic valve (12-7) and a seventh high-precision gas flowmeter (13-7) are connected in series on the third hydrogen delivery pipe, the fifth high-sensitivity electromagnetic valve (12-5), the sixth high-sensitivity electromagnetic valve (12-6) and the seventh high-sensitivity electromagnetic valve (12-7) are electrically connected with the time sequence synchronous controller (10), and the fifth high-precision gas flowmeter (13-5), the sixth high-precision gas flowmeter (13-6) and the seventh high-precision gas flowmeter (13-7) are electrically connected with the program control and data acquisition system (11).
  5. 5. The high-precision detection response heterogeneous hydrogen deflagration and detonation suppression feature parameter testing device according to claim 3, wherein the inerting suppression injection system comprises a gas storage unit, a flame detector (20), a first high-sensitivity solenoid valve (12-1), a second high-sensitivity solenoid valve (12-2), a third high-sensitivity solenoid valve (12-3), a fourth high-sensitivity solenoid valve (12-4), a first high-precision gas flowmeter (13-1), a second high-precision gas flowmeter (13-2), a third high-precision gas flowmeter (13-3), a fourth high-precision gas flowmeter (13-4), a first inert gas injection distribution coil (17-1), a second inert gas injection distribution coil (17-2), a third inert gas injection distribution coil (17-3), a fourth inert gas injection distribution coil (17-4), the first inert gas injection distribution coil (17-1) being mounted in a visual detonation section container (1-1), the second inert gas injection distribution coil (17-2), the third inert gas injection distribution coil (17-3) and the fourth inert gas injection distribution coil (17-4) are arranged in the visualized inerting section container (1-2) at intervals; the gas storage unit is respectively communicated with a first inert gas injection distribution coil (17-1), a second inert gas injection distribution coil (17-2), a third inert gas injection distribution coil (17-3) and a fourth inert gas injection distribution coil (17-4) through four inert gas delivery pipes, the first high-sensitivity electromagnetic valve (12-1) and the first high-precision gas flowmeter (13-1) are connected in series on the first inert gas delivery pipe, the second high-sensitivity electromagnetic valve (12-2) and the second high-precision gas flowmeter (13-2) are connected in series on the second inert gas delivery pipe, the third high-sensitivity electromagnetic valve (12-3) and the third high-precision gas flowmeter (13-3) are connected in series on the third inert gas delivery pipe, the fourth high-sensitivity electromagnetic valve (12-4) and the fourth high-precision gas flowmeter (13-4) are connected in series on the fourth inert gas delivery pipe, the flame detector (20) is arranged at the right end of a container (1-1) of a visual detonation section for monitoring the flame in the first electromagnetic valve (12-1) in the visual detonation section, and the first electromagnetic valve (1) is used for monitoring the explosion in real time, the second high-sensitivity electromagnetic valve (12-2), the third high-sensitivity electromagnetic valve (12-3) and the fourth high-sensitivity electromagnetic valve (12-4) are electrically connected with the time sequence synchronous controller (10), and the flame detector (20), the first high-precision gas flowmeter (13-1), the second high-precision gas flowmeter (13-2), the third high-precision gas flowmeter (13-3) and the fourth high-precision gas flowmeter (13-4) are electrically connected with the program control and data acquisition system (11).
  6. 6. The high-precision detection response heterogeneous hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device according to claim 3 is characterized in that the adjustable high-voltage ignition system comprises an adjustable high-voltage ignition device (5) and a high-voltage discharge electrode (3), the flame propagation regulating system comprises a flame propagation regulating device (4), the high-voltage discharge electrode (3) is fixedly arranged on the left end face of a visual detonation section container (1-1) in a penetrating mode, the adjustable high-voltage ignition device (5) is electrically connected with the high-voltage discharge electrode (3) through a high-voltage lead, a time sequence synchronous controller (10) is electrically connected with the adjustable high-voltage ignition device (5), and the flame propagation regulating device (4) is fixed in the visual detonation section container (1-1) and the end portion of the flame propagation regulating device is close to the ignition position of the high-voltage discharge electrode (3).
  7. 7. The high-precision detection response non-uniform hydrogen deflagration and detonation inerting suppression characteristic parameter testing device according to claim 3, wherein the high-frequency temperature dynamic acquisition system comprises a first high-frequency response thermocouple (18-1), a second high-frequency response thermocouple (18-2), a third high-frequency response thermocouple (18-3), a fourth high-frequency response thermocouple (18-4), a fifth high-frequency response thermocouple (18-5), a sixth high-frequency response thermocouple (18-6) and a seventh high-frequency response thermocouple (18-7), and the high-frequency pressure dynamic acquisition system comprises a first high-frequency response dynamic pressure sensor (19-1), The system comprises a second high-frequency response dynamic pressure sensor (19-2), a third high-frequency response dynamic pressure sensor (19-3), a fourth high-frequency response dynamic pressure sensor (19-4), a fifth high-frequency response dynamic pressure sensor (19-5), a sixth high-frequency response dynamic pressure sensor (19-6) and a seventh high-frequency response dynamic pressure sensor (19-7), wherein a first high-frequency response thermocouple (18-1) and a second high-frequency response thermocouple (18-2) are installed on a visual detonation section container (1-1) at intervals and are used for acquiring temperatures at two points in the visual detonation section container (1-1) in real time, and a third high-frequency response thermocouple (18-3), a fourth high-frequency response thermocouple (18-4), The fifth high-frequency response thermocouple (18-5) and the sixth high-frequency response thermocouple (18-6) are arranged on the visual inerting section container (1-2) at intervals and are used for acquiring temperatures at four points in the visual inerting section container (1-2) in real time, the seventh high-frequency response thermocouple (18-7) is arranged on the visual protection section container (1-3) and is used for acquiring temperatures at the left end in the visual protection section container (1-3) in real time, the first high-frequency response dynamic pressure sensor (19-1) and the second high-frequency response dynamic pressure sensor (19-2) are arranged on the visual detonation section container (1-1) at intervals and are used for acquiring air pressures at two points in the visual detonation section container (1-1) in real time, and the third high-frequency response dynamic pressure sensor (19-3), The system comprises a fourth high-frequency response dynamic pressure sensor (19-4), a fifth high-frequency response dynamic pressure sensor (19-5) and a sixth high-frequency response dynamic pressure sensor (19-6), wherein the fourth high-frequency response dynamic pressure sensor, the fifth high-frequency response dynamic pressure sensor and the sixth high-frequency response dynamic pressure sensor (19-6) are arranged on a visual inerting section container (1-2) at intervals and are used for collecting air pressure at four points in the visual inerting section container (1-2) in real time, a seventh high-frequency response dynamic pressure sensor (19-7) is arranged on a visual protection section container (1-3) and is used for collecting air pressure at the left end in the visual protection section container (1-3) in real time, a first high-frequency response thermocouple (18-1), a second high-frequency response thermocouple (18-2), The third high-frequency response thermocouple (18-3), the fourth high-frequency response thermocouple (18-4), the fifth high-frequency response thermocouple (18-5), the sixth high-frequency response thermocouple (18-6), the seventh high-frequency response thermocouple (18-7), the first high-frequency response dynamic pressure sensor (19-1), the second high-frequency response dynamic pressure sensor (19-2), the third high-frequency response dynamic pressure sensor (19-3), the fourth high-frequency response dynamic pressure sensor (19-4), the fifth high-frequency response dynamic pressure sensor (19-5), the sixth high-frequency response dynamic pressure sensor (19-6) and the seventh high-frequency response dynamic pressure sensor (19-7) are electrically connected with the program control and data acquisition system (11).
  8. 8. The high-precision detection response heterogeneous hydrogen deflagration and detonation inerting suppression characteristic parameter testing device according to claim 3, wherein the hydrogen concentration detection system comprises a first hydrogen concentration detector (21-1), a second hydrogen concentration detector (21-2), a third hydrogen concentration detector (21-3), a fourth hydrogen concentration detector (21-4), a fifth hydrogen concentration detector (21-5), a sixth hydrogen concentration detector (21-6), a seventh hydrogen concentration detector (21-7), an eighth hydrogen concentration detector (21-8) and a ninth hydrogen concentration detector (21-9), and the inert gas concentration detection system comprises a first inert gas concentration detector (22-1), The device comprises a second inert gas concentration detector (22-2), a third inert gas concentration detector (22-3), a fourth inert gas concentration detector (22-4), a fifth inert gas concentration detector (22-5), a sixth inert gas concentration detector (22-6) and a seventh inert gas concentration detector (22-7), wherein the first hydrogen concentration detector (21-1), the second hydrogen concentration detector (21-2) and the third hydrogen concentration detector (21-3) are arranged in a visual detonation section container (1-1) at intervals and are used for acquiring hydrogen concentration at three points in the visual detonation section container (1-1), and the third hydrogen concentration detector (21-4), The fifth hydrogen concentration detector (21-5) and the sixth hydrogen concentration detector (21-6) are arranged in the visualized inerting section container (1-2) at intervals and are used for collecting hydrogen concentrations at three points in the visualized inerting section container (1-2) in real time, the seventh hydrogen concentration detector (21-7), the eighth hydrogen concentration detector (21-8) and the ninth hydrogen concentration detector (21-9) are arranged in the visualized protection section container (1-3) at intervals and are used for collecting hydrogen concentrations at three points in the visualized protection section container (1-3) in real time, and the first inert gas concentration detector (22-1), The second inert gas concentration detector (22-2), the third inert gas concentration detector (22-3), the fourth inert gas concentration detector (22-4), the fifth inert gas concentration detector (22-5), the sixth inert gas concentration detector (22-6) and the seventh inert gas concentration detector (22-7) are arranged in the visualized inerting section container (1-2) at intervals and are used for collecting inert gas concentrations at seven points in the visualized inerting section container (1-2) in real time, wherein the first hydrogen concentration detector (21-1), the second hydrogen concentration detector (21-2), the third hydrogen concentration detector (21-3), The fourth hydrogen concentration detector (21-4), the fifth hydrogen concentration detector (21-5), the sixth hydrogen concentration detector (21-6), the seventh hydrogen concentration detector (21-7), the eighth hydrogen concentration detector (21-8), the ninth hydrogen concentration detector (21-9), the first inert gas concentration detector (22-1), the second inert gas concentration detector (22-2), the third inert gas concentration detector (22-3), the fourth inert gas concentration detector (22-4), the fifth inert gas concentration detector (22-5), the sixth inert gas concentration detector (22-6) and the seventh inert gas concentration detector (22-7) are electrically connected with the program control and data acquisition system (11).
  9. 9. The high-precision detection response heterogeneous hydrogen detonation and detonation inerting suppression feature parameter testing device according to claim 3 is characterized in that the free radical concentration acquisition system comprises a plane laser induced fluorescence system (14), the flame image acquisition system comprises a high-speed camera (15), the plane laser induced fluorescence system (14) is arranged on the front side of an inerting section visual window (2-2) and used for irradiating laser to the inerting section visual window (2-2) and acquiring generated fluorescent signals, the high-speed camera (15) is arranged on the front side of the detonating section visual window (2-1), the inerting section visual window (2-2) and the protection section visual window (2-3) and used for recording transient flame forms in the visual detonating section container (1-1), the visual inerting section container (1-2) and the visual protection section container (1-3), and the plane laser induced fluorescence system (14) and the high-speed camera (15) are connected with the time sequence synchronization controller (10) and the control program (11) and the data acquisition program.
  10. 10. A method of testing a high precision probe response non-uniform hydrogen deflagration and detonation inerting suppression characteristic parameter testing device as defined in claim 3, comprising the steps of: step 1, firstly, checking the sealing performance and the functionality of a visual explosion container, a non-uniform gas distribution system and an inerting inhibition injection system; step 2, carrying out orientation adjustment and function test on the free radical concentration acquisition system and the flame image acquisition system, so that the acquisition range of the free radical concentration acquisition system covers the detonation section visual window (2-1) and the inerting section visual window (2-2), and meanwhile, the acquisition range of the flame image acquisition system covers the detonation section visual window (2-1), the inerting section visual window (2-2) and the protection section visual window (2-3); Step 3, a program control and data acquisition system (11) sends a starting command to a time sequence synchronous controller (10), the time sequence synchronous controller (10) receives the starting command, then drives and controls a non-uniform gas distribution system, hydrogen is conveyed to multiple points in a visual detonation section container (1-1), a visual inerting section container (1-2) and a visual protection section container (1-3), hydrogen concentration at different positions is acquired in real time by a hydrogen concentration detection system, the non-uniform gas distribution system is stopped after the hydrogen concentration at each position reaches a set concentration value, and finally a preset non-uniform hydrogen concentration field is formed in the visual detonation section container (1-1), the visual inerting section container (1-2) and the visual protection section container (1-3); Step 4, a time sequence synchronous controller (10) sends a trigger signal to an adjustable high-voltage ignition system, the adjustable high-voltage ignition system ignites to trigger hydrogen deflagration or detonation, the generated flame is in a visual detonation section container (1-1) under the action of a flame propagation regulating and controlling system, meanwhile, the time sequence synchronous controller (10) sends the trigger signal to a free radical concentration acquisition system and a flame image acquisition system, the free radical concentration acquisition system excites a target free radical and acquires and records the generated fluorescent signal, and the flame image acquisition system acquires the transient flame form in real time; and 5, after the inerting suppression injection system detects flame, driving and controlling the inerting suppression injection system by a time sequence synchronous controller (10), injecting inert gas into the visualized detonation section container (1-1) and the visualized inerting section container (1-2) to form a multi-point injection inerting area so as to suppress flame propagation, detecting the concentration of residual combustible gas after inerting in real time by a hydrogen concentration detection system, sending the residual combustible gas concentration to a program control and data acquisition system (11), sending a trigger signal to a free radical concentration acquisition system and a flame image acquisition system by the time sequence synchronous controller (10), exciting target free radicals by the free radical concentration acquisition system, acquiring and recording fluorescent signals generated under the inhibition of the inert gas, and acquiring the transient flame form under the inhibition of the inert gas in real time by the flame image acquisition system.

Description

High-precision detection response non-uniform hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device and testing method thereof Technical Field The invention belongs to the technical field of new energy protection, and particularly relates to a high-precision detection response non-uniform hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device and a testing method thereof. Background Under the promotion of the rapid development of the hydrogen energy industry, the scale of hydrogen production and application is continuously enlarged. Meanwhile, aiming at the characteristics of fast diffusion, low ignition energy, high combustion reaction rate and the like of hydrogen, the hydrogen brings about larger harmful influence. Once leaked, a heterogeneous gas cloud is formed in a limited or communicated space and an ignition source is encountered, an explosion process is extremely easy to occur and even detonation propagation is developed, so that a potential high risk is brought to the development of the hydrogen energy industry. Therefore, the method has important significance in improving the safety protection level of the hydrogen energy system by grasping the variation characteristics of the non-uniform hydrogen gas in air distribution at any time and the propagation rules of deflagration and detonation and developing an effective and rapid inhibition technology. The existing inhibition and protection measures mostly adopt spraying explosion suppressants (such as water mist, solid explosion suppressants and the like) to carry out quick-response explosion suppression research. Research and testing means are focused on testing analysis of macroscopic explosion characteristic parameters under uniform mixed gas and single working condition, and system experimental characterization of deflagration and detonation propagation and inhibition response under non-uniform concentration fields is still relatively insufficient. Meanwhile, in the aspect of inert gas inerting inhibition, the conventional device often has the problems of slow inerting injection response, insufficient coverage, single injection form and the like, and the practical multi-point injection inerting quick response inhibition process is difficult to simulate. Traditionally used explosion suppressants are mostly discrete phase solid or liquid explosion suppressants, and compared with the explosion suppression and inerting of the explosion are more facilitated by the continuous inert gas. In addition, the inerting jet trigger strategy is mostly controlled manually or with a single delay setting, and the lack of control based on a flame or pressure event trigger response results in difficulty in accurate capture of the critical target inhibition window. Meanwhile, the experiment lacks of 'detonation-inerting-evaluation' integration to acquire and correlate and analyze temperature field, pressure field, concentration field, flame image and combustion reaction synchronous comprehensive controllable data on time/space, thereby limiting the reliability of explosion suppression response characteristic parameter extraction and mechanism analysis. Disclosure of Invention The invention aims to provide a high-precision detection response non-uniform hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device and a testing method thereof, which can fill the blank of the non-uniform hydrogen deflagration and detonation inerting inhibition protection performance and the influence mechanism characterization experimental device, and provide important theoretical support for the rapid development of the hydrogen energy industry and the improvement of safety key protection technology. The high-precision detection response heterogeneous hydrogen deflagration and detonation inerting inhibition characteristic parameter testing device comprises a visual explosion container, a heterogeneous gas distribution system, an inerting inhibition injection system, an adjustable high-pressure ignition system, a flame propagation regulation and control system, a high-frequency temperature dynamic acquisition system, a high-frequency pressure dynamic acquisition system, a hydrogen concentration detection system, an inert gas concentration detection system, a free radical concentration acquisition system, a flame image acquisition system and a synchronous control and data acquisition system, wherein the heterogeneous gas distribution system is used for transporting hydrogen to multiple points in the visual explosion container, the inerting inhibition injection system is used for forming a multipoint injection inerting zone in the visual explosion container, the adjustable high-pressure ignition system is used for triggering ignition in the left end of the visual explosion container, the flame propagation regulation and control system is used for regulating and control