Safety system of hydrogen fuel cell laboratory and use method

Abstract

The invention relates to a safety system of a hydrogen fuel cell test room and a use method, and belongs to the technical field of test room safety protection, the safety system of the hydrogen fuel cell test room comprises a test room system, the test room system comprises a control area, a hydrogen storage area and an equipment test area, the safety prevention and control system is used for safety detection and protection of a real test room system and comprises a detection system and a protection system. The detection system, the alarm system and the protection system can be arranged in the laboratory system, so that detection, alarm and prevention and control can be performed on corresponding positions according to actual states when hydrogen leakage or hydrogen abnormal states occur at any position of the hydrogen storage area, the equipment test area and the hydrogen supply pipeline; therefore, the safety system can perform grading control and more accurately judge the hydrogen state of each position, abnormal areas can be accurately prevented and controlled, economic losses caused when safety risks occur are reduced, and the test efficiency is improved.

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 of a hydrogen fuel cell laboratory. Background Art

[0003] At present, major domestic testing institutions and large automobile manufacturers have successively built hydrogen fuel cell laboratories. Since the laboratories involve hydrogen and the physical properties of hydrogen, it is easy to leak or even burn and explode during operation, causing safety accidents. Therefore, hydrogen fuel cell 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 building materials required 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 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] There are many hydrogen pipeline valves and test equipment inside the hydrogen fuel cell test room. During operation, there is a risk of hydrogen leakage at the joints of each valve and inside the test equipment. Therefore, various sensors, detectors and related alarm devices should be arranged in the hydrogen storage area, pipelines, test area and all test equipment. If the traditional safety control method is adopted, the alarm device alarm caused by the safety risk at any location will cause the equipment inside the test area to shut down. Since the hydrogen fuel cell test room currently built has multiple test equipment arranged in a large test area at the same time, if the safety risks are not graded, hastily shutting down all test equipment will cause unnecessary economic losses and affect the test efficiency. In fact, the safety risks of various risk points in the hydrogen fuel cell test room are not the same. They are mainly related to the amount of hydrogen leakage, leakage location, hydrogen pressure and surrounding environment. The safety risks of the hydrogen fuel cell test room are graded, and regional alarms are set. The safety control method is implemented according to different safety risk levels, which can reduce the economic losses caused by safety risks and improve the test efficiency. Summary of the invention

[0005] The embodiments of the present application provide a safety system and method for using 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, the laboratory system comprising a control area, a hydrogen storage area and an equipment testing area, the hydrogen storage area and the equipment testing area being connected by a hydrogen supply pipeline, and the equipment testing area being provided with a plurality of testing equipment;

[0008] Safety detection and control system, which is used for safety detection and protection of the laboratory system. The safety detection and control 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 rate of the hydrogen storage area or hydrogen supply pipeline or equipment test area or each test equipment, and to implement graded prevention and control through the protection system according to different values ​​of hydrogen concentration, hydrogen pressure, temperature and flow rate;

[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 a hydrogen storage area, a hydrogen supply pipeline, an equipment testing area and each test equipment.

[0013] In some embodiments, the detection system includes a plurality of flame detectors and / or a plurality of smoke detectors and / or a plurality of 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 arranged 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 arranged on the hydrogen pipeline;

[0018] The solenoid valve group includes two first solenoid valves for controlling the output ends of the hydrogen container and the hydrogen bundle vehicle respectively, a second solenoid valve for controlling the hydrogen supply pipeline, and a third solenoid valve for controlling 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 rate in the hydrogen storage area or hydrogen supply pipeline or 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 to carry out graded prevention and control based on the detection data detected by the detection system and the area corresponding to the predetermined threshold.

[0022] In some embodiments, when the detection system detects a first preset threshold, the console prompts whether the associated test equipment is 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, closes the associated third solenoid valve, starts the exhaust fan in the equipment test area, and prompts whether to shut down all test equipment with one button;

[0025] When the detection system detects that the fourth preset threshold value 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 control system can be pre-set with different thresholds and graded control based on the presence of flames and / or smoke;

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

[0030] In some embodiments, when the detection system detects 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, the vent pipe automatically vents and performs nitrogen purge, and starts all strong exhaust fans and high-pressure fine water spray;

[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, the vent pipe automatically vents and performs nitrogen purge, 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 test 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 the abnormal area, reduce the economic losses caused by safety risks and improve the test efficiency.

[0034] Avoid the situation where a safety risk alarm occurs at any location in the existing laboratory safety system, which will cause the equipment in the test area to shut down, resulting in unnecessary economic losses and affecting the 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 drawings required for use in the description of the embodiments will be briefly introduced below. 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 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 flow meter; 30. Second solenoid valve; 31. Third solenoid valve. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work 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, after a safety hazard is identified, all test equipment is shut down in the existing hydrogen fuel cell test laboratory, 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, including:

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

[0042] Safety detection and control system: The safety control system is used for safety detection and protection of the laboratory system. The safety control 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 to perform 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 position of the hydrogen storage area 2, the equipment test area 4 and the hydrogen supply pipeline 3, the corresponding position can be detected 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.

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

[0048] In some optional embodiments, see Figure 1 As shown, in the safety system of the hydrogen fuel cell test room, the detection system includes a plurality of hydrogen concentration sensors 6 and / or a plurality of pressure sensors 8 and / or a plurality of temperature sensors 10 and / or a plurality of 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 and therefore require a wide range of sensing, and the hydrogen concentration sensors 6 of each test equipment 24 are 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] Among them, a pressure sensor 8 is provided on the hydrogen storage area 2 , the hydrogen supply pipeline 3 and each test equipment 24 .

[0051] Among them, a temperature sensor 10 is provided on 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 timely and accurately controlled, 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 is not more than 30s. It is mainly arranged at various interfaces 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 is no more than 60s. It is mainly arranged 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 equipment 24, and can accurately sense each test equipment 24 to avoid large-scale measurement of hydrogen concentration. When the concentration exceeds the standard, all test equipment 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, and improve 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 supply pipeline 3 arranged outside the test room is detected by the hydrogen flowmeter 26 because the outdoor space is open and it is not convenient to sense the change of hydrogen concentration by concentration. Therefore, the hydrogen flowmeter 26 is used to sense and detect whether the hydrogen flow rate changes and to give an alarm.

[0057] By setting various sensors in various areas of the laboratory, and each test device 24 is individually provided with a corresponding sensor, a large-range sensing sensor is set on the hydrogen supply pipeline 3, and a sensor is individually 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, avoiding the one-size-fits-all protection method of existing hydrogen fuel laboratories in safety protection that affects the work of the laboratory.

[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] Among them, a flame detector 11 is arranged on the hydrogen storage area 2 , the hydrogen supply pipeline 3 , the equipment testing area 4 and each testing equipment 24 .

[0060] Wherein, 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 on 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 timely and accurately controlled, 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 testing area 4, and a second alarm 19 for alarming each test equipment 24 in the equipment testing area 4.

[0064] In some optional embodiments, see Figure 1 As shown, in the safety system of the hydrogen fuel cell test room, 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 strong exhaust fan 20 and the high-pressure fine water spray 23.

[0065] In some optional embodiments, see Figure 1 As shown, in the safety system of the hydrogen fuel cell test room, 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 vent pipe 22 integrally connected with 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 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 to perform graded prevention and control based on the detection data detected by the detection system and the area corresponding to the predetermined threshold.

[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 or 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 whether the associated test device 24 is shut down.

[0073] Among them, the parameter of the hydrogen concentration sensor 6 reaching 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 the second preset threshold, the second alarm 19 associated with the corresponding test device 24 starts to alarm, and the control 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 equipment 24 reaches the third preset threshold value, the second alarm 19 associated with the corresponding test equipment 24 starts to alarm, 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, the exhaust fan 20 in the equipment test area 4 is started, and the control console 1 prompts whether to shut down all the test equipment 24 with one button.

[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 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.

[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 part of the value that exceeds 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, the 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: Enable the prevention and control system to preset different thresholds and whether there is flame and / or smoke for graded prevention and 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 to perform graded prevention and control based on the detection results of the detection system and the corresponding areas where flame and / or smoke occur.

[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, 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 control 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 the personnel to evacuate, and automatically dials the fire alarm.

[0089] The second preset threshold parameter reached by the hydrogen concentration sensor 6 may preferably be 20000 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 control 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 equipment 24 reaches the third preset threshold, the second alarm 19 associated with the corresponding test equipment 24 starts to alarm, the console 1 automatically shuts down 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 starts, and the console 1 prompts whether to shut down all test equipment 24 with one button.

[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 a fourth preset threshold, 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.

[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 the 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 in 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.

[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 control console 1 automatically shuts down all 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 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 the associated flame detector 11 detects a flame at the same time, 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, and the console 1 prompts personnel to evacuate and automatically calls the fire alarm.

[0099] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 the present application and simplifying the description, rather than indicating or implying 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 the present 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such 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 including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0101] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A safety system for a hydrogen fuel cell test room, It is characterized in that include: 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 testing devices (24) being arranged in the equipment testing area (4); Safety detection and control system, which is used for safety detection and protection of the laboratory system. The safety detection and control 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 perform graded prevention and control through the protection system according to different values ​​of hydrogen concentration, hydrogen pressure, temperature and flow rate; or 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 to perform graded prevention and control through the prevention and control system by detecting whether there is smoke or flame.

2. The safety system for the hydrogen fuel cell test chamber as claimed in claim 1, Features: The detection system comprises 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 safety system for the hydrogen fuel cell test chamber as claimed in claim 1, Features: The detection system comprises a plurality of flame detectors (11) and / or a plurality of smoke detectors (12) and / or a plurality of monitoring probes (15) arranged in a hydrogen storage area (2), a hydrogen supply pipeline (3), an equipment test area (4) and each test equipment (24).

4. The safety system for the hydrogen fuel cell test chamber as claimed in claim 1, Features: It also includes an alarm system, which includes a first alarm (18) for alarming the hydrogen storage area (2) and the equipment testing area (4), and a second alarm (19) for alarming each test equipment (24) in the equipment testing area (4).

5. The safety system for the hydrogen fuel cell test chamber as claimed in claim 1, Features: 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) comprises a hydrogen container (16) and a hydrogen tube bundle vehicle (17).

6. The safety system for the hydrogen fuel cell test chamber as claimed in claim 5, Features: The protection system comprises 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 venting 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 comprises two first solenoid valves (14) for respectively 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).

7. A method for using a safety system for a hydrogen fuel cell test room, the method using the safety system for a hydrogen fuel cell test room according to claims 1-6, It is characterized in that include: 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 value, 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 value, and performs graded prevention and control.

8. A method for using the safety system of a hydrogen fuel cell test room as claimed in claim 7, Features: When the detection system detects a first preset threshold, the console (1) prompts the associated test equipment (24) whether 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 shuts down the associated test equipment (24) through the PLC control cabinet (21), closes the associated third solenoid valve (31), starts the exhaust fan (20) in the equipment test area (4), and prompts the control console (1) whether to shut down 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 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); When the detection system detects that the fifth preset threshold 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). The control console (1) prompts that there is a hydrogen leak at an unknown point, and asks to check for leaks immediately.

9. A method for using a safety system for a hydrogen fuel cell test room, the method using the safety system for a hydrogen fuel cell test room according to claims 1 to 6, It is characterized in that include: The control system can be pre-set with different thresholds and graded control based on the presence of flames and / or smoke; When the detection system detects the presence of 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), 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 the flame and / or smoke occurs, and performs graded prevention and control.

10. A method for using the safety system of a hydrogen fuel cell test room as claimed in claim 9, Features: When the detection system reaches a first preset threshold and detects smoke or flame, the control console (1) automatically stops all test equipment (24) through the PLC control cabinet (21), closes all first solenoid valves (14), second solenoid valves (30) and third solenoid valves (31), the discharge pipe (22) automatically discharges and performs nitrogen purge, and starts all strong exhaust fans (20) and high-pressure fine water spray (23); When the detection system reaches the second preset threshold and detects a flame, the control console (1) automatically shuts down all test equipment (24) through the PLC control cabinet (21), closes all first solenoid valves (14), second solenoid valves (30) and third solenoid valves (31), the discharge pipe (22) automatically discharges and performs nitrogen purge, and starts the exhaust fan (20) and high-pressure fine water spray (23), the control console (1) prompts personnel to evacuate, and automatically dials a fire alarm.

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