A safety system and usage method for a hydrogen fuel cell test room

Abstract

The present application relates to a safety system and a method for using a hydrogen fuel cell laboratory, and belongs to the field of laboratory safety protection technology. The safety system of the hydrogen fuel cell laboratory includes a laboratory system, and the laboratory system includes a control area, a hydrogen storage area and an equipment testing area. The safety detection and control system is used for safety detection and protection of the actual laboratory system, and the safety detection and control system includes a detection system and a protection system. The present application can set up a detection system, an alarm system and a protection system in the laboratory system. When hydrogen leakage or hydrogen abnormality occurs at any position in the hydrogen storage area, the equipment testing area and the hydrogen supply pipeline, the corresponding position can be detected, alarmed and controlled according to the actual state, so that the safety system can control the hydrogen state of each position more accurately through hierarchical control, and can accurately control the abnormal area, reduce the economic losses caused by safety risks and improve the test efficiency.

Description

Technical Field

[0001] The present application relates to the field of laboratory safety protection technology, and in particular to a safety system and use method for a hydrogen fuel cell laboratory. Background Art

[0002] With the rapid development of the automotive industry and the proposal of my country's "dual carbon" goals, fuel cells have attracted widespread attention due to their zero emissions, long driving range, and fast refueling speed, and have gradually become a research hotspot for technicians.

[0003] At present, major domestic testing institutions and large automobile manufacturers have successively built hydrogen fuel cell test laboratories. Since the laboratories involve hydrogen, and the physical properties of hydrogen make it easy for leakage or even combustion and explosion to occur during operation, causing safety accidents. Therefore, hydrogen fuel cell test laboratories need to be built in accordance with the standards of Class A factories. The special requirements of Class A factories for fire and explosion prevention result in the cost of the required building materials being 1.5 to 2 times higher than that of ordinary factories. Therefore, after comprehensively considering the cost and safety requirements during the construction process, most hydrogen fuel cell test laboratories no longer use traditional test rooms that only accommodate a single test equipment, but instead build large test areas to arrange many test equipment at the same time.

[0004] Hydrogen fuel cell test chambers contain numerous hydrogen pipelines, valves, and test equipment. During operation, there is a risk of hydrogen leakage at each valve connection and within the test equipment. Therefore, various sensors, detectors, and associated alarm devices should be installed in the hydrogen storage area, pipelines, test area, and all test equipment. If traditional safety control methods are used, any alarm device alarm caused by a safety risk at any location will cause the equipment within the test area to shut down. Since current hydrogen fuel cell test chambers house multiple test equipment simultaneously in a large test area, hastily shutting down all test equipment without prioritizing safety risks can cause unnecessary economic losses and affect test efficiency. In reality, the safety risks at various risk points in a hydrogen fuel cell test chamber vary, primarily related to the amount of hydrogen leakage, leak location, hydrogen pressure, and the surrounding environment. By grading the safety risks of hydrogen fuel cell test chambers, setting alarms for each area, and implementing safety control methods based on different safety risk levels, the economic losses caused by safety risks can be reduced and test efficiency improved. Summary of the Invention

[0005] The embodiments of the present application provide a safety system and method for use of a hydrogen fuel cell test laboratory to solve the problem in the related art that, after a safety hazard is identified, all test equipment is shut down, causing some equipment without safety hazards to also shut down, resulting in reduced experimental efficiency and increased experimental costs.

[0006] A first aspect of an embodiment of the present application provides a safety system for a hydrogen fuel cell test room, comprising:

[0007] A laboratory system, comprising a control area, a hydrogen storage area, and an equipment testing area, wherein a hydrogen supply pipeline is connected between the hydrogen storage area and the equipment testing area, and a plurality of test equipment are arranged in the equipment testing area;

[0008] Safety detection and prevention system, which is used for safety detection and protection of the laboratory system. The safety detection and prevention system includes a detection system and a protection system;

[0009] The detection system is used to detect the hydrogen concentration and / or hydrogen pressure and / or temperature and / or flow in the hydrogen storage area or hydrogen supply pipeline or equipment test area or each test equipment, and implement graded prevention and control through the protection system according to different values ​​of hydrogen concentration, hydrogen pressure, temperature and flow;

[0010] or

[0011] The detection system is used to detect whether there is flame and / or smoke in the hydrogen storage area or hydrogen supply pipeline or equipment test area or each test equipment, and the prevention and control system is used for graded prevention and control by detecting whether there is smoke or flame.

[0012] In some embodiments, the detection system includes a hydrogen concentration sensor and / or a pressure sensor and / or a temperature sensor and / or a hydrogen flow meter arranged in the hydrogen storage area, the hydrogen supply pipeline, the equipment testing area and each test equipment.

[0013] In some embodiments, the detection system includes multiple flame detectors and / or multiple smoke detectors and / or multiple monitoring probes arranged in the hydrogen storage area, the hydrogen supply pipeline, the equipment testing area and each test equipment.

[0014] In some embodiments, an alarm system is further included, wherein the alarm system includes a first alarm for alarming the hydrogen storage area and the equipment testing area, and a second alarm for alarming each test equipment in the equipment testing area.

[0015] In some embodiments, the control area includes a control console, a PLC control cabinet for a safety detection and prevention system, and an access control system;

[0016] The hydrogen storage area includes a hydrogen container and a hydrogen tube bundle vehicle.

[0017] In some embodiments, the protection system includes a high-pressure fine water spray and exhaust fan respectively provided in the hydrogen storage area and the equipment test area, a bleed pipe integrally connected to the hydrogen supply pipeline, and a solenoid valve group provided on the hydrogen pipeline;

[0018] The solenoid valve group includes two first solenoid valves that respectively control the output ends of the hydrogen container and the hydrogen tube bundle vehicle, a second solenoid valve that controls the hydrogen supply pipeline, and a third solenoid valve that controls the input ends of each test equipment.

[0019] A second aspect of an embodiment of the present application provides a method for using a safety system of a hydrogen fuel cell test room, comprising the following steps:

[0020] Enable the prevention and control system to preset different thresholds for graded prevention and control;

[0021] When the detection system detects that the hydrogen concentration and / or hydrogen pressure and / or temperature and / or flow in the hydrogen storage area, hydrogen supply pipeline, equipment test area or each test equipment reaches a predetermined threshold, the prevention and control system initiates different prevention and control measures through the control area according to the detection data detected by the detection system and the area corresponding to the predetermined threshold, and performs graded prevention and control.

[0022] In some embodiments, when the detection system detects a first preset threshold, the console prompts whether the associated test equipment should be shut down;

[0023] When the detection system detects that the second preset threshold is reached, the console automatically shuts down the associated test equipment through the PLC control cabinet and closes the associated third solenoid valve;

[0024] When the detection system reaches the third preset threshold, the console automatically shuts down the associated test equipment through the PLC control cabinet and closes the associated third solenoid valve. The exhaust fan in the equipment test area starts, and the console prompts whether to shut down all test equipment with one button.

[0025] When the detection system detects that the fourth preset threshold is reached, the console automatically shuts down all test equipment through the PLC control cabinet and closes all first solenoid valves, second solenoid valves and third solenoid valves;

[0026] When the detection system reaches the fifth preset threshold, the console automatically shuts down all test equipment through the PLC control cabinet and closes all first solenoid valves, second solenoid valves and third solenoid valves. The console prompts that there is a hydrogen leak at an unknown point, please check for leaks immediately.

[0027] A third aspect of the present application provides a method for using a safety system of a hydrogen fuel cell test room, comprising the following steps:

[0028] The prevention and control system can be pre-set with different thresholds and the presence of flames and / or smoke for graded prevention and control;

[0029] When the detection system detects flames and / or smoke in the hydrogen storage area, hydrogen supply pipeline, equipment test area, or various test equipment, the prevention and control system initiates different prevention and control measures through the control area according to the detection results of the detection system and the corresponding areas where flames and / or smoke occur, and performs graded prevention and control.

[0030] In some embodiments, when the detection system reaches a first preset threshold and detects smoke or flame, the console automatically shuts down all test equipment through the PLC control cabinet, closes all first solenoid valves, second solenoid valves, and third solenoid valves, automatically releases and performs nitrogen purge through the bleed pipe, and starts all strong exhaust fans and high-pressure fine water sprays;

[0031] When the detection system reaches the second preset threshold and detects a flame, the console automatically shuts down all test equipment through the PLC control cabinet, closes all first solenoid valves, second solenoid valves and third solenoid valves, automatically releases and performs nitrogen purge through the vent pipe, and starts the exhaust fan and high-pressure fine water spray. The console prompts personnel to evacuate and automatically calls the fire alarm.

[0032] The beneficial effects of the technical solution provided by this application include:

[0033] By setting up a detection system and a protection system in the laboratory system, if hydrogen leakage or abnormal hydrogen status occurs at any location in the hydrogen storage area, equipment testing area and hydrogen supply pipeline, the corresponding location can be detected and controlled according to the actual status, so that the safety system can control the hydrogen status of each location more accurately through hierarchical control, and can accurately control abnormal areas, reduce economic losses caused by safety risks and improve test efficiency.

[0034] Avoid the situation where a safety risk alarm at any location in the existing laboratory safety system will cause equipment in the test area to shut down, resulting in unnecessary economic losses and affecting test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 A system diagram provided for an embodiment of the present application.

[0037] 1. Control console; 2. Hydrogen storage area; 3. Hydrogen supply pipeline; 4. Equipment testing area; 5. Control area; 6. Hydrogen concentration sensor; 8. Pressure sensor; 10. Temperature sensor; 11. Flame detector; 12. Smoke detector; 13. Access control system; 14. First solenoid valve; 15. Monitoring probe; 16. Hydrogen container; 17. Hydrogen tube bundle vehicle; 18. First alarm; 19. Second alarm; 20. Exhaust fan; 21. PLC control cabinet; 22. Vent pipe; 23. High-pressure fine water spray; 24. Testing equipment; 26. Hydrogen flowmeter; 30. Second solenoid valve; 31. Third solenoid valve. DETAILED DESCRIPTION

[0038] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0039] The embodiments of the present application provide a safety system and method for use of a hydrogen fuel cell test laboratory, which can solve the problem that in existing hydrogen fuel cell test laboratories, after identifying safety hazards, all test equipment is shut down, causing some equipment without safety hazards to also shut down, resulting in reduced experimental efficiency and increased experimental costs.

[0040] See also Figure 1 As shown, the first aspect of the embodiment of the present application provides a safety system for a hydrogen fuel cell test room, comprising:

[0041] The laboratory system includes a control area 5, a hydrogen storage area 2 and an equipment testing area 4. A hydrogen supply pipeline 3 is connected between the hydrogen storage area 2 and the equipment testing area 4. A plurality of test equipment 24 is provided in the equipment testing area 4.

[0042] Safety detection and prevention system: The safety detection and prevention system is used for safety detection and protection of the laboratory system. The safety detection and prevention system includes a detection system and a protection system;

[0043] The detection system is used to detect the hydrogen concentration and / or hydrogen pressure and / or temperature and / or flow rate of the hydrogen storage area 2 or the hydrogen supply pipeline 3 or the equipment test area 4 or each test equipment 24, and implements graded prevention and control through the protection system according to different values ​​of hydrogen concentration, hydrogen pressure, temperature and flow rate;

[0044] or

[0045] The detection system is used to detect whether there is flame and / or smoke in the hydrogen storage area 2 or the hydrogen supply pipeline 3 or the equipment test area 4 or each test equipment 24, and the prevention and control system is used for graded prevention and control by detecting whether there is smoke or flame.

[0046] By setting up a detection system and a protection system in the laboratory system, if hydrogen leakage or abnormal hydrogen state occurs at any location in the hydrogen storage area 2, the equipment test area 4 and the hydrogen supply pipeline 3, the corresponding location can be detected and controlled according to the actual state, so that the safety system can control the hydrogen state of each location more accurately through hierarchical control, and can accurately control the abnormal area, reduce the economic losses caused by safety risks and improve the test efficiency.

[0047] Avoid the situation where a safety risk alarm at any location in the existing laboratory safety system will cause equipment in the test area to shut down, resulting in unnecessary economic losses and affecting test efficiency.

[0048] In some optional embodiments, see Figure 1 As shown, in the safety system of the hydrogen fuel cell test laboratory, the detection system includes multiple hydrogen concentration sensors 6 and / or multiple pressure sensors 8 and / or multiple temperature sensors 10 and / or multiple hydrogen flow meters 26 arranged in the hydrogen storage area 2, the hydrogen supply pipeline 3, the equipment test area 4 and each test equipment 24. Among them, the hydrogen concentration sensors 6 in the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 are diffusion type, because they are used in the area, a wide range of sensing is required, and the hydrogen concentration sensor 6 of each test equipment 24 is a pump-suction type, which can more accurately sense the hydrogen concentration of each test equipment 24.

[0049] Among them, a hydrogen concentration sensor 6 is provided on the hydrogen storage area 2 , the hydrogen supply pipeline 3 , the equipment testing area 4 and each testing equipment 24 .

[0050] The hydrogen storage area 2 , the hydrogen supply pipeline 3 and each test device 24 are each provided with a pressure sensor 8 .

[0051] A temperature sensor 10 is provided on each of the hydrogen storage area 2 , the hydrogen supply pipeline 3 , the equipment testing area 4 and each testing equipment 24 .

[0052] A hydrogen flow meter 26 is provided at the output end of the hydrogen supply pipeline 3 , and a hydrogen flow meter 26 is provided at the input end of each test device 24 of the hydrogen supply pipeline 3 .

[0053] By monitoring various abnormal conditions in various areas of the laboratory system through the above-mentioned device, the occurrence of abnormal conditions can be controlled in a timely and accurate manner, and the abnormal condition areas can be timely prevented and controlled.

[0054] The hydrogen concentration sensor 6 is preferably a high-precision pump-suction sensor and a diffusion sensor. The accuracy of the high-precision pump-suction hydrogen concentration sensor is not less than 100ppm, and the response speed does not exceed 30s. It is mainly set at each interface of the hydrogen supply pipeline 3 and directly above each test equipment 24 in the equipment test area 4, with a distance of no more than 200cm. The accuracy of the diffusion hydrogen concentration sensor is not less than 100ppm, and the response speed does not exceed 60s. It is mainly set at the highest point on the top of the laboratory.

[0055] The high-precision pump-suction hydrogen concentration sensor can accurately sense the hydrogen concentration around each test device 24, and can accurately sense each test device 24 to avoid large-scale measurement of hydrogen concentration. When the standard is exceeded, all test devices 24 need to be shut down. The high-precision pump-suction hydrogen concentration sensor can shut down the corresponding test equipment. At the same time, the alarm concentrations generated by the test equipment 24 and the laboratory are also different, which can provide better targeted warning and protection, thereby improving the accuracy of protection.

[0056] The hydrogen flowmeter 26 is preferably a mass flowmeter with an accuracy of not less than ±1% FS. The hydrogen flowmeter 26 is respectively arranged on the hydrogen supply pipeline 3 and at the air inlets of various areas and equipment connected to the hydrogen supply pipeline 3 that need to use hydrogen. The hydrogen flowmeter 26 is used to sense the change in hydrogen concentration of the hydrogen supply pipeline 3 arranged outside the laboratory because the outdoor area is open. Therefore, the hydrogen flowmeter 26 is used to sense the hydrogen flow and detect whether there is an alarm.

[0057] By setting up various sensors in various areas of the laboratory, and each test device 24 is separately equipped with a corresponding sensor, a large-range sensing sensor is set on the hydrogen supply pipeline 3, and a separate sensor is set at the connection port, the laboratory can sense the changes in hydrogen in a large range, and can also accurately sense the changes in hydrogen at important locations, realize multi-level control safety management, and accurately control safety management, and avoid the existing hydrogen fuel laboratory's one-size-fits-all protection method in safety protection that affects the laboratory's work.

[0058] In some optional embodiments, see Figure 1 As shown, in the safety system of the hydrogen fuel cell test laboratory, the detection system includes multiple flame detectors 11 and / or multiple smoke detectors 12 and / or multiple monitoring probes 15 arranged in the hydrogen storage area 2, the hydrogen supply pipeline 3, the equipment testing area 4 and each test equipment 24.

[0059] A flame detector 11 is provided in each of the hydrogen storage area 2 , the hydrogen supply pipeline 3 , the equipment testing area 4 and each test equipment 24 .

[0060] A smoke detector 12 is provided in each of the hydrogen storage area 2 and the equipment testing area 4 .

[0061] Wherein, a monitoring probe 15 is provided in each of the hydrogen storage area 2 and the equipment testing area 4 .

[0062] By monitoring various abnormal conditions in various areas of the laboratory system through the above-mentioned device, the occurrence of abnormal conditions can be controlled in a timely and accurate manner, and the abnormal condition areas can be timely prevented and controlled.

[0063] In some optional embodiments, see Figure 1 As shown, the safety system of the hydrogen fuel cell test room also includes an alarm system, which includes a first alarm 18 for alarming the hydrogen storage area 2 and the equipment test area 4, and a second alarm 19 for alarming each test equipment 24 in the equipment test area 4.

[0064] In some optional embodiments, see Figure 1 As shown, in the safety system of the hydrogen fuel cell test laboratory, the control area 5 includes a control console 1, a PLC control cabinet 21 for a safety detection and prevention system, and an access control system 13; the hydrogen storage area 2 includes a hydrogen container 16 and a hydrogen tube bundle vehicle 17; the PLC control cabinet 21 can control the hydrogen concentration sensor 6, the pressure sensor 8, the temperature sensor 10, the flame detector 11, the smoke detector 12, the solenoid valve group, the first alarm 18, the second alarm 19, the forced exhaust fan 20, and the high-pressure fine water spray 23.

[0065] In some optional embodiments, see Figure 1 As shown, the safety system of the hydrogen fuel cell test room includes a protection system comprising a high-pressure fine water spray 23 and an exhaust fan 20 respectively arranged in the hydrogen storage area 2 and the equipment test area 4, a bleed pipe 22 integrally connected to the hydrogen supply pipeline 3, and a solenoid valve group arranged on the hydrogen supply pipeline 3;

[0066] The solenoid valve group includes two first solenoid valves 14 for controlling the output ends of the hydrogen container 16 and the hydrogen tube bundle vehicle 17 respectively, a second solenoid valve 30 for controlling the hydrogen supply pipeline 3 and a third solenoid valve 31 for controlling the input ends of each test equipment 24.

[0067] The exhaust fan 20 is explosion-proof.

[0068] See also Figure 1 As shown, the second aspect of the embodiment of the present application provides a method for using a safety system of a hydrogen fuel cell test room, comprising the following steps:

[0069] Step 1: Enable the prevention and control system to preset different thresholds for graded prevention and control;

[0070] Step 2. When the detection system detects that the hydrogen concentration and / or hydrogen pressure and / or temperature and / or flow rate of the hydrogen storage area 2 or the hydrogen supply pipeline 3 or the equipment test area 4 or each test equipment 24 reaches a predetermined threshold, the prevention and control system initiates different prevention and control measures through the control area 5 according to the detection data detected by the detection system and the area corresponding to the predetermined threshold, and performs graded prevention and control.

[0071] In some optional embodiments, see Figure 1 As shown, in the method for using the safety system of the hydrogen fuel cell test room, the specific process of step 2 is:

[0072] Step 201: When the hydrogen concentration, hydrogen pressure or temperature of each test device 24 reaches a first preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, and the console 1 prompts the associated test device 24 whether to shut down.

[0073] The parameter of the hydrogen concentration sensor 6 at which the hydrogen concentration reaches the first preset threshold value may preferably be 500 ppm, and the parameter of the pressure sensor 8 may preferably be higher than 2 MPa or lower than 1 MPa.

[0074] Step 202: When the hydrogen concentration or hydrogen pressure of each test device 24 reaches a second preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, and the console 1 automatically shuts down the associated test device 24 through the PLC control cabinet 21 and closes the associated third solenoid valve 31.

[0075] Wherein, when the second preset threshold parameter of the hydrogen concentration of the hydrogen concentration sensor 6 is preferably 2000 ppm, the parameter of the pressure sensor 8 is preferably higher than 3 MPa or lower than 800 kPa.

[0076] Step 203: When the hydrogen concentration of each test device 24 reaches the third preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, the console 1 automatically shuts down the associated test device 24 through the PLC control cabinet 21, and closes the associated third solenoid valve 31. The exhaust fan 20 in the equipment test area 4 starts, and the console 1 prompts whether to shut down all test devices 24 with one click.

[0077] The third preset threshold parameter reached by the hydrogen concentration sensor 6 may preferably be 10000 ppm.

[0078] Step 204: When the hydrogen concentration or hydrogen pressure in the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 reaches a fourth preset threshold, the console 1 automatically shuts down all test equipment 24 through the PLC control cabinet 21 and closes all first solenoid valves 14, second solenoid valves 30 and third solenoid valves 31.

[0079] The fourth preset threshold parameter of the hydrogen concentration of the hydrogen concentration sensor 6 may preferably be 2000 ppm, and the fourth preset threshold parameter of the pressure sensor 8 may preferably be higher than 3 MPa or lower than 800 kPa.

[0080] Step 205: When the value of the hydrogen flowmeter 26 at the output end of the hydrogen supply pipeline 3 is greater than the sum of the values ​​of all hydrogen flowmeters 26 at the input ends of the hydrogen supply pipeline 3 located at each test equipment 24, and the excess value is greater than the fifth preset threshold, but the hydrogen concentrations of the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 and the hydrogen concentrations of each test equipment 24 do not reach the fifth threshold, all the first alarms 18 start to alarm, the console 1 automatically shuts down all the test equipment 24 through the PLC control cabinet 21, and closes all the first solenoid valves 14, the second solenoid valves 30 and the third solenoid valves 31, and the console 1 prompts that there is a hydrogen leak at an unknown point, please check for leaks immediately.

[0081] The parameter at which the hydrogen concentration sensor 6 does not reach the fifth preset threshold is preferably 500 ppm.

[0082] See also Figure 1 As shown, a third aspect of the embodiment of the present application provides a method for using a safety system of a hydrogen fuel cell test room, comprising the following steps:

[0083] Step 1: The control system is configured with preset thresholds and the presence of flames and / or smoke to perform graded control.

[0084] Step 2: When the detection system detects the presence of flame and / or smoke in the hydrogen storage area 2, the hydrogen supply pipeline 3, the equipment test area 4, or each test equipment 24, the prevention and control system initiates different prevention and control measures through the control area 5 according to the detection results of the detection system and the corresponding areas where flame and / or smoke occur, and performs graded prevention and control.

[0085] In some optional embodiments, see Figure 1 As shown, in the method for using the safety system of the hydrogen fuel cell test room, the specific process of step 2 is:

[0086] Step 201: When the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 reach the first preset threshold value, and the smoke detector 12 detects smoke, or the flame detector 11 detects flame, all the first alarms 18 in the laboratory system start to alarm, and the console 1 automatically shuts down all the test equipment 24 through the PLC control cabinet 21, closes all the first solenoid valves 14, the second solenoid valves 30 and the third solenoid valves 31, and the vent pipe 22 automatically vents and performs nitrogen purge, and starts all the strong exhaust fans 20 and high-pressure fine water sprays 23.

[0087] The first preset threshold parameter reached by the hydrogen concentration sensor 6 may preferably be 10000 ppm.

[0088] Step 202: When the hydrogen concentration in the hydrogen storage area 2, the hydrogen supply pipeline 3, and the equipment test area 4 or each test equipment 24 reaches the second preset threshold value, and at the same time the associated flame detector 11 detects a flame, all the first alarms 18 in the laboratory system start to alarm, the console 1 automatically shuts down all the test equipment 24 through the PLC control cabinet 21, closes all the first solenoid valves 14, the second solenoid valves 30 and the third solenoid valves 31, the vent pipe 22 automatically vents and performs nitrogen purge, and starts the exhaust fan 20 and the high-pressure fine water spray 23. The console 1 prompts personnel to evacuate and automatically calls the fire alarm.

[0089] The second preset threshold parameter reached by the hydrogen concentration sensor 6 may preferably be 20,000 ppm.

[0090] The working principle and process of this application are as follows:

[0091] When the hydrogen concentration, hydrogen pressure or temperature of each test device 24 reaches a first preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, and the console 1 prompts the associated test device 24 whether to shut down.

[0092] When the hydrogen concentration or hydrogen pressure of each test device 24 reaches the second preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, and the console 1 automatically shuts down the associated test device 24 through the PLC control cabinet 21 and closes the associated third solenoid valve 31.

[0093] When the hydrogen concentration of each test device 24 reaches the third preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, the console 1 automatically shuts down the associated test device 24 through the PLC control cabinet 21, and closes the associated third solenoid valve 31, the exhaust fan 20 in the equipment test area 4 starts, and the console 1 prompts whether to shut down all test devices 24 with one click.

[0094] When the hydrogen concentration or hydrogen pressure in the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 reaches the fourth preset threshold, the console 1 automatically shuts down all test equipment 24 through the PLC control cabinet 21 and closes all first solenoid valves 14, second solenoid valves 30 and third solenoid valves 31.

[0095] When the value of the hydrogen flowmeter 26 at the output end of the hydrogen supply pipeline 3 is greater than the sum of the values ​​of all hydrogen flowmeters 26 at the input ends of the hydrogen supply pipeline 3 located at each test equipment 24, and the excess value is greater than the fifth preset threshold, but the hydrogen concentrations in the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 and the hydrogen concentrations of each test equipment 24 do not reach the fifth threshold, all the first alarms 18 start to alarm, and the console 1 automatically shuts down all the test equipment 24 through the PLC control cabinet 21, and closes all the first solenoid valves 14, the second solenoid valves 30 and the third solenoid valves 31. The console 1 prompts that there is a hydrogen leak at an unknown point, please check for leaks immediately.

[0096] and / or

[0097] When the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 reach the first preset threshold, and the smoke detector 12 detects smoke, or the flame detector 11 detects flame, all the first alarms 18 in the laboratory system start to alarm, and the console 1 automatically shuts down all the test equipment 24 through the PLC control cabinet 21, closes all the first solenoid valves 14, the second solenoid valves 30 and the third solenoid valves 31, and the vent pipe 22 automatically vents and performs nitrogen purge, and starts all the strong exhaust fans 20 and high-pressure fine water sprays 23.

[0098] When the hydrogen concentration in the hydrogen storage area 2, the hydrogen supply pipeline 3 and the equipment test area 4 or each test equipment 24 reaches the second preset threshold, and at the same time the associated flame detector 11 detects a flame, all the first alarms 18 in the laboratory system start to alarm, and the console 1 automatically shuts down all the test equipment 24 through the PLC control cabinet 21, closes all the first solenoid valves 14, the second solenoid valves 30 and the third solenoid valves 31, and the vent pipe 22 automatically vents and performs nitrogen purge, and starts the exhaust fan 20 and the high-pressure fine water spray 23. The console 1 prompts personnel to evacuate and automatically calls the fire alarm.

[0099] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0100] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0101] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A method for using a safety system for a hydrogen fuel cell test room, wherein the method uses the safety system for a hydrogen fuel cell test room, characterized in that: The safety system of the hydrogen fuel cell test room includes: A laboratory system, the laboratory system comprising a control area (5), a hydrogen storage area (2) and an equipment testing area (4), a hydrogen supply pipeline (3) being connected between the hydrogen storage area (2) and the equipment testing area (4), and a plurality of test equipment (24) being arranged in the equipment testing area (4); Safety detection and prevention system, which is used for safety detection and protection of the laboratory system. The safety detection and prevention system includes a detection system and a protection system; The detection system is used to detect the hydrogen concentration and / or hydrogen pressure and / or temperature and / or flow rate of the hydrogen storage area (2) or the hydrogen supply pipeline (3) or the equipment test area (4) or each test equipment (24), and to implement graded prevention and control through the protection system according to different values ​​of hydrogen concentration, hydrogen pressure, temperature and flow rate; The protection system includes a high-pressure fine water spray (23) and an exhaust fan (20) respectively arranged in the hydrogen storage area (2) and the equipment test area (4), a discharge pipe (22) integrally connected to the hydrogen supply pipeline (3), and a solenoid valve group arranged on the hydrogen supply pipeline (3); The solenoid valve group includes two first solenoid valves (14) for controlling the output ends of the hydrogen container (16) and the hydrogen tube bundle vehicle (17), a second solenoid valve (30) for controlling the hydrogen supply pipeline (3), and a third solenoid valve (31) for controlling the input ends of each test equipment (24). The method comprises: Enable the prevention and control system to preset different thresholds for graded prevention and control; When the detection system detects that the hydrogen concentration and / or hydrogen pressure and / or temperature and / or flow rate of the hydrogen storage area (2) or the hydrogen supply pipeline (3) or the equipment test area (4) or each test equipment (24) reaches a predetermined threshold, the prevention and control system activates different prevention and control measures through the control area (5) according to the detection data detected by the detection system and the area corresponding to the predetermined threshold, and performs hierarchical prevention and control; When the detection system detects a first preset threshold, the console (1) prompts the associated test equipment (24) to shut down; When the detection system detects that the second preset threshold value is reached, the control console (1) automatically shuts down the associated test equipment (24) through the PLC control cabinet (21) and closes the associated third solenoid valve (31); When the detection system detects that the third preset threshold value is reached, the control console (1) automatically stops the associated test equipment (24) through the PLC control cabinet (21) and closes the associated third solenoid valve (31), the exhaust fan (20) in the equipment test area (4) is started, and the control console (1) prompts whether to stop all the test equipment (24) with one button; When the detection system detects that the fourth preset threshold value is reached, the control console (1) automatically shuts down all test equipment (24) through the PLC control cabinet (21) and closes all first solenoid valves (14), second solenoid valves (30) and third solenoid valves (31); When the detection system detects that the fifth preset threshold value is reached, the console (1) automatically shuts down all test equipment (24) through the PLC control cabinet (21) and closes all first solenoid valves (14), second solenoid valves (30) and third solenoid valves (31). The console (1) prompts that there is a hydrogen leak at an unknown point and asks to check for leaks immediately.

2. The method for using the safety system for a hydrogen fuel cell test chamber according to claim 1, wherein: The detection system includes a hydrogen concentration sensor (6) and / or a pressure sensor (8) and / or a temperature sensor (10) and / or a hydrogen flow meter (26) arranged in a hydrogen storage area (2), a hydrogen supply pipeline (3), an equipment test area (4), and each test equipment (24).

3. The method for using the safety system for a hydrogen fuel cell test chamber according to claim 1, wherein: The control area (5) includes a control console (1), a PLC control cabinet (21) for a safety detection and prevention system, and an access control system (13); The hydrogen storage area (2) includes a hydrogen container (16) and a hydrogen tube bundle vehicle (17).

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