CN101324485A - Test device and method for detecting security of fuel battery passenger car hydrogen feed system - Google Patents
Test device and method for detecting security of fuel battery passenger car hydrogen feed system Download PDFInfo
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- CN101324485A CN101324485A CNA2008101164982A CN200810116498A CN101324485A CN 101324485 A CN101324485 A CN 101324485A CN A2008101164982 A CNA2008101164982 A CN A2008101164982A CN 200810116498 A CN200810116498 A CN 200810116498A CN 101324485 A CN101324485 A CN 101324485A
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 239000001257 hydrogen Substances 0.000 title claims abstract description 85
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 85
- 238000012360 testing method Methods 0.000 title claims abstract description 44
- 239000000446 fuel Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007789 gas Substances 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims description 13
- 238000005070 sampling Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010998 test method Methods 0.000 abstract description 2
- 230000007704 transition Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 235000004607 Chlorophora excelsa Nutrition 0.000 description 1
- 241000595436 Milicia excelsa Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention relates to a test table for testing the security of a hydrogen supply system of a fuel cell bus and the test method thereof, and belongs to the security technology field of the fuel cell bus. The test table comprises a hydrogen supply system simulation device, a main control computer, an electrical control cabinet, a high pressure hydrogen bottle and a hydrogen detector, wherein the hydrogen supply system simulation device is connected with the output mouth of the high pressure hydrogen bottle, and bilaterally connected with the main control computer; the main control computer is connected with the electrical control cabinet, the high pressure hydrogen bottle and the hydrogen detector; the electrical control cabinet is respectively connected with the high pressure hydrogen bottle and the hydrogen supply system simulation device; the test table further comprises a bench for fixing and supporting the hydrogen supply system simulation device. The method comprises the following steps: a valve to be tested is connected with an identical valve in a pipeline of the hydrogen supply system simulation device in parallel; the working state of the valve to be tested is simulated; according to data such as gas pressure, flow, hydrogen concentration, etc. in an acquisition pipeline, whether the performance of the valve to be tested is qualified can be judged. The test table is used for dynamically testing the security of the key components of hydrogen supply system of the fuel cell bus.
Description
Technical field
The invention belongs to fuel battery passenger car safety technique field, particularly hydrogen-feeding system security detection technique.
Background technology
At present, along with the fast development of fuel battery passenger car technology, the security of fuel battery passenger car hydrogen feed system more and more is subjected to people's attention.The fuel battery passenger car hydrogen feed system is by High Pressure Hydrogen gas cylinder, high-pressure solenoid valve, excess flow valve, reduction valve, hydrogen gas detector, pipeline, and pipe joint is formed.Behind the starting fluid battery, will open high-pressure solenoid valve and open source of the gas, hydrogen enters fuel battery inside through excess flow valve, reduction valve.If high-pressure solenoid valve work is undesired, just can't open or close source of the gas.If excess flow valve or reduction valve occur unusual, hydrogen flowing quantity in pipeline surpasses the fuel cell rated flow, when perhaps the reduction valve top hole pressure is higher than the fuel cell rated pressure, just can't cut off source of the gas, therefore the serviceable life of damaging fuel cell or reducing fuel cell easily.Generally speaking, the pressure in the hydrogen cylinder reaches 20 ~ 35MPa, if slight crack appears in pipeline or pipe joint, just causes a large amount of leakages of hydrogen easily, increases the potential safety hazard of detonation.Based on the potential safety hazard that the fuel battery passenger car hydrogen feed system exists, before entrucking, must test each parts performance of hydrogen-feeding system, but also not have relevant test platform that security of fuel battery passenger car hydrogen feed system is carried out integration test at present.Existing parts performance test breaks away from real vehicle working environment and condition, and correctly the performance of each parts of criticism fuel battery passenger car hydrogen feed system does not satisfy the security detection requirement of vehicle-mounted hydrogen-feeding system.Generally speaking, being difficult to carry out the parts security on real vehicle detects.
Summary of the invention
The objective of the invention is for overcoming the weak point of prior art, a kind of security of fuel battery passenger car hydrogen feed system detection testing table and test method thereof are proposed, can solve the independent test condition of existing parts and the difference of real vehicle hydrogen-feeding system operating mode, the security of simulation real vehicle operating mode, dynamic test fuel battery passenger car hydrogen feed system core parts can be provided.
A kind of security of fuel battery passenger car hydrogen feed system detection testing table that the present invention proposes is characterized in that this testing table comprises:
The hydrogen-feeding system analogue means is used for that under the real vehicle simulated environment performance of the key components and parts of hydrogen-feeding system is carried out security and detects;
Main control computer is used for the hydrogen-feeding system simulating plant operations is controlled:
Electrical control cubicles is used for all the sensors, solenoid valve, alarm centrally connected power supply to the hydrogen-feeding system analogue means, independent control electromagnetic valve;
The High Pressure Hydrogen gas cylinder is used to the hydrogen-feeding system analogue means that source of the gas is provided;
Hydrogen gas detector; Be used for the hydrogen of hydrogen-feeding system analogue means is detected;
Wherein, the hydrogen-feeding system analogue means links to each other with High Pressure Hydrogen gas cylinder delivery outlet, and carries out two-way the connection with main control computer; Main control computer and electrical control cubicles, High Pressure Hydrogen gas cylinder, hydrogen are talked it and are linked to each other, and electrical control cubicles links to each other with High Pressure Hydrogen gas cylinder, hydrogen-feeding system analogue means respectively; That this testing table also comprises is fixing, support the stand of hydrogen-feeding system analogue means.
Characteristics of the present invention are:
This testing table can be under the real vehicle simulated environment, by the pressure in the main control computer collecting test pipeline, flow, temperature, hydrogen gas leakage amount, and the data of gathering is handled, and draws the performance of key components and parts.
The present invention has adopted the electrical control cubicles centralized power supply system, therefore can be at the far distance controlled testing table, and electrical control cubicles can also be under the idle state of computing machine by electrical control cubicles can independent control electromagnetic valve work, the security when improving the service test platform.
Description of drawings
Fig. 1 is the general structure synoptic diagram of security of fuel battery passenger car hydrogen feed system detection testing table of the present invention.
Fig. 2 is a hydrogen-feeding system analogue means example structure synoptic diagram of the present invention.
Fig. 3 is an electrical control cubicles embodiment circuit diagram of the present invention.
Fig. 4 is that hydrogen-feeding system security of the present invention detects the test control flow chart.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
Testing table of the present invention is formed as shown in Figure 1, comprises the hydrogen-feeding system analogue means, main control computer, electrical control cubicles, High Pressure Hydrogen gas cylinder, hydrogen gas detector; Wherein, the hydrogen-feeding system analogue means links to each other with High Pressure Hydrogen gas cylinder delivery outlet, and carries out two-way the connection with main control computer; Main control computer and electrical control cubicles, High Pressure Hydrogen gas cylinder, hydrogen are talked it and are linked to each other, and electrical control cubicles links to each other with High Pressure Hydrogen gas cylinder, hydrogen-feeding system analogue means respectively; That this testing table also comprises is fixing, support the stand of hydrogen-feeding system analogue means.
Main control computer or electrical control cubicles control hydrogen cylinder provide source of the gas for the hydrogen-feeding system analogue means, are detected the parts performance to be tested of hydrogen-feeding system analogue means simultaneously by main control computer.If hydrogen gas detector detects hydrogen gas leakage, main control computer will be closed hydrogen cylinder, start the warning system in the electrical control cubicles simultaneously.
The concrete formation of each building block of the present invention and realization function are described in detail as follows:
Hydrogen-feeding system analogue means example structure of the present invention is shown in Fig. 2 a, comprise the hydrogen cylinder interface 1 that is connected to successively with hydrogen pipeline, retaining valve 2, manual ball valve 31, manual needle-valve 41, excess flow valve 5, pipeline plug 61, filtrator 71, manual ball valve 32, manual needle-valve 42, high-pressure solenoid valve 8, pipeline plug 62, pressure transducer 91, temperature sensor 101, tensimeter 111, filtrator 72, manual ball valve 33, manual needle-valve 43, reduction valve 12, manual needle-valve 44, pipeline plug 63, tensimeter 112, temperature sensor 102, pressure transducer 92, manual ball valve 34, manual needle-valve 45, safety valve 13, manual needle-valve 46, pipeline plug 64, manual needle-valve 47, flowmeter 14, and evacuated tube 15.
Be installed in the manual ball valve of excess flow valve 5, high-pressure solenoid valve 8, reduction valve 12 or safety valve 13 both sides, manually needle-valve and pipeline plug in the above-mentioned pipeline, when being used to install valve to be detected with little shunt circuit of standard valve composition;
The pressure transducer of installing in the above-mentioned pipeline, temperature sensor, tensimeter and flowmeter are used for observing pressure, temperature and the flow of this section pipeline gas;
Installed filters in the above-mentioned pipeline is used to filter the impurity in gas cylinder and the hydrogen, guarantees pipeline and each key components and parts operate as normal.
The retaining valve of installing in the above-mentioned pipeline is used to prevent that extraneous gas from entering in the gas cylinder, guarantees the clarity of hydrogen in the gas cylinder.
Between pipeline plug 61 and flowmeter 14, manual ball valve 35 is installed also in the above-mentioned pipeline, is used for when abnormal conditions occurring, can opening in manual ball valve 35 pipe hydrogen and directly passes through evacuated tube 15 and in atmosphere, discharge.
At reduction valve 12 and safety valve 13 back manual needle- valve 44 and 46 have been installed respectively in the above-mentioned pipeline, gas flows backwards and damages the reduction valve and the safety valve of simulation system when being used for preventing to test other reduction valve or safety valve.
In flowmeter 14 back manual needle-valve 47 has been installed in the above-mentioned pipeline, has been used to regulate the hydrogen flowing quantity in the pipeline, and by the flow value in flowmeter 14 signal pipings.
It is the lightweight pressure vessel of 20 ~ 35MPa that the High Pressure Hydrogen gas cylinder of present embodiment adopts the storage hydrogen pressure, is inner bag with the aluminium alloy, the outer carbon fiber reinforced composite layer that twines.The High Pressure Hydrogen gas cylinder connects with the hydrogen-feeding system analogue means by hydrogen cylinder interface 1, and provides hydrogen for testing table.
The device embodiment of the support hydrogen-feeding system analogue means of present embodiment be one place, fixedly the hydrogen-feeding system analogue means platform and support propping up of this platform and be configured to.This platform and support all adopt steel to make with conventional method.
Hydrogen gas detector of the present invention adopts the OLC20D type hydrogen gas detector of French Odum company.Main control computer is gathered the data of hydrogen gas detector in real time by data collecting card.
The electrical control cubicles structure of present embodiment is made up of the outer feed circuit of sensor and solenoid valve control circuit, alarm control circuit shown in Fig. 3 a and Fig. 3 b, realizes all the sensors in the hydrogen-feeding system analogue means pipeline, solenoid valve, alarm centrally connected power supply; Wherein, the AC-DC converter forms solenoid valve control circuit by bottleneck switch P K1 and main valve switch ZK1, is joined together to form the sensor road that powers outward with the outer power supply source line of explosion-proof isolated gate and sensor simultaneously.Outer feed circuit of the sensor of present embodiment and solenoid valve control circuit are shown in Fig. 3 a, by emergency stop switch JK1, starting switch QK1, bottleneck threshold switch PK1, main valve switch ZK1, relay switch K1, K2, explosion-proof isolated gate, AC-DC converter, start pilot lamp L1, bottleneck valve pilot lamp L2, main valve pilot lamp L3, fan M3 forms.Wherein, AC-DC converter and bottleneck solenoid valve M1, bottleneck valve pilot lamp L2, main solenoid valve M2, main valve pilot lamp L3 links to each other, and the unlatching by bottleneck threshold switch OK1 and relay switch K1 control bottleneck solenoid valve or close, the unlatching by main valve switch ZK1 and relay switch K2 control main solenoid valve or close.In addition, fan M3, bottleneck temperature sensor S1, high-pressure sensor S2, low-pressure sensor S3, high pressure temperature sensor S4, low pressure temperature sensor S5, hydrogen gas detector S6, the outer power supply source line of flowmeter S7 links to each other with the AC-DC converter by explosion-proof isolated gate.Starting switch QK1 will connect all power supplys, and emergency stop switch JK1 can disconnect all power supplys under the emergency circumstance.
The alarm control circuit of present embodiment is shown in Fig. 3 b, by the AC-DC converter, the DO transition card, relay coil KM1, M2, reset switch SK1, homing light L4, superpressure alarm lamp L5, overcurrent alarm lamp L6, hydrogen gas leakage alarm lamp L7, overtemperature alarm pilot lamp L8, hummer L9 forms.Wherein, the AC-DC converter links to each other with the DO transition card, DO transition card and relay coil KM1, KM2, reset switch SK1, homing light L4, superpressure alarm lamp L5, overcurrent alarm lamp L6, hydrogen gas leakage alarm lamp L7, overtemperature alarm pilot lamp L8, hummer L9 links to each other, and is therefore controlled the work of each alarm lamp by the DO transition card.If press reset switch, just can remove warning.
The testing table of present embodiment has adopted the electrical control cubicles centralized power supply system, and when computer control is broken down, can pass through electrical control cubicles independence control electromagnetic valve.Explosion-proof isolated gate is housed in the regulator cubicle, when therefore various sensors break down, can reduces explosion hazard.When the hydrogen gas leakage amount of hydrogen gas detector detection surpasses setting value, the warning that the alarm in the regulator cubicle can send different brackets.
The main control computer of present embodiment is furnished with the CPU that dominant frequency is 1.7G, the internal memory of 512MB, 2 PCI slots, the hard disk of 80G, and 17 cun LCD.
The control flow of main control computer as shown in Figure 4, realize following function: the hydrogen-feeding system simulating plant operations is controlled: open, close gas cylinder, solenoid valve, read and be provided with sampling parameter (such as, acquisition channel, sample frequency, drainage pattern etc.), start power light, the driving data capture card, control electromagnetic valve is handled data such as the pressure gathered, temperature, density of hydrogen, flows.Idiographic flow is elaborated in conjunction with following embodiment.
Adopt above-mentioned testing table to be: the manual needle-valve 41 of closing excess flow valve 5 fronts to the course of work of the detection method embodiment of the excess flow valve security of hydrogen-feeding system, between manual ball valve 31 and pipeline plug 61, connect excess flow valve to be tested then, make excess flow valve to be tested in parallel with the excess flow valve on the hydrogen-feeding system analogue means.Open source of the gas, and maximum ground opens all hand valves and solenoid valve except manual needle-valve 47, increase the flow in the opening pilot piping of manual needle-valve 47 then gradually, the simulation pipeline ruptures.In this case, the data sampling frequency of main control computer at first is set, then by the flow in flowmeter 14 signal pipings, test pressure in the pipeline respectively by high-pressure sensor 91 and low-pressure sensor 92, detect excess flow valve to be tested density of hydrogen on every side by hydrogen gas detector, and show correlation curve.If the hydrogen flowing quantity in the pipeline more than or equal to the fuel cell rated flow, then compares the value of high and low pressure pressure transducer, analyze the hydrogen flowing quantity variation tendency simultaneously.If the value of high and low pressure pressure transducer reduces suddenly, perhaps hydrogen flowing quantity reduces suddenly, and excess flow valve then to be measured is normal, otherwise this excess flow valve is undesired, closes all solenoid valves, starts excess flow valve alarm lamp and hummer simultaneously, detects and finishes; Shown in Fig. 4 flow process A.
If the density of hydrogen around the excess flow valve to be tested equals threshold value 1 (0.4%), just send the hydrogen gas leakage one-level and report to the police, make the flicker of yellow alarm lamp.If density of hydrogen equals threshold value 2 (1.2%), just send the gas leakage secondary and report to the police, make orange alarm lamp flicker, start hummer simultaneously.If density of hydrogen equals threshold value 3 (2%), just send three grades of warnings of gas leakage, make the flicker of red alarm lamp, start hummer simultaneously, and close all solenoid valves.
The course of work that the present invention detects the embodiment of solenoid valve is: the manual needle-valve 42 of closing high-pressure solenoid valve 8 fronts, between manual ball valve 32 and pipeline plug 62, connect solenoid valve to be tested 81 then, make solenoid valve to be tested in parallel with the high-pressure solenoid valve 8 on the hydrogen-feeding system analogue means, and at tested solenoid valve 81 front setting pressure sensors 93 (shown in Fig. 2 b).Close the manual needle-valve 43 before the reduction valve 12, and open source of the gas, make hydrogen through tested solenoid valve 81.In this case, the data sampling frequency of main control computer at first is set, test the pressure of electromagnetic valve outlet to be tested then by high-pressure sensor 91, pressure by high-pressure sensor 93 tests electromagnetic valve entrance to be tested, detect solenoid valve to be tested density of hydrogen on every side by hydrogen gas detector, and show correlation curve.When tested solenoid valve 81 inlet and outlet pressures are identical, successively close tested solenoid valve 81 and source of the gas, and open the needle-valve 43 before the reduction valve 12, the gas in the pipeline of thoroughly draining.If the electromagnetic valve entrance force value is constant, just illustrate that solenoid valve cuts out fully, satisfy the magnetic valve performance index, otherwise solenoid valve lost efficacy, should close manual needle-valve 41, in order to avoid hydrogen continues to leak, shown in Fig. 4 flow process B.
If the density of hydrogen around the solenoid valve to be tested equals threshold value 1 (0.4%), just send the hydrogen gas leakage one-level and report to the police, make the flicker of yellow alarm lamp.If density of hydrogen equals threshold value 2 (1.2%), just send the gas leakage secondary and report to the police, make orange alarm lamp flicker, start hummer simultaneously.If density of hydrogen equals threshold value 3 (2%), just send three grades of warnings of gas leakage, make the flicker of red alarm lamp, start hummer simultaneously.
The course of work that the present invention detects the embodiment of reduction valve is: the manual needle- valve 43 and 44 of closing reduction valve 12 front and back, between manual ball valve 33 and pipeline plug 63, connect reduction valve to be tested then, make reduction valve to be tested in parallel with the reduction valve on the hydrogen-feeding system analogue means.In this case, the data sampling frequency of main control computer at first is set, test the pressure of reduction valve entrance and exit then respectively by high-pressure sensor 91 and low-pressure sensor 92, detect solenoid valve to be tested density of hydrogen on every side by hydrogen gas detector, and show correlation curve.Open source of the gas, make gas through tested reduction valve.At this moment, open all hand valves and solenoid valve.When if inlet pressure is constant, top hole pressure is no more than the fuel cell rated pressure and (when present embodiment is 1.4 ~ 3MPa), just illustrate that reduction valve satisfies performance index, otherwise this reduction valve lost efficacy, and started hummer.Shown in Fig. 4 flow process C
If the density of hydrogen around the reduction valve to be tested equals threshold value 1 (0.4%), just send the hydrogen gas leakage one-level and report to the police, make the flicker of yellow alarm lamp.If density of hydrogen equals threshold value 2 (1.2%), just send the gas leakage secondary and report to the police, make orange alarm lamp flicker, start hummer simultaneously.If density of hydrogen equals threshold value 3 (2%), just send three grades of warnings of gas leakage, make the flicker of red alarm lamp, start hummer simultaneously, close all solenoid valves.
Claims (7)
1, a kind of security of fuel battery passenger car hydrogen feed system detection testing table is characterized in that this testing table comprises:
The hydrogen-feeding system analogue means is used for that under the real vehicle simulated environment performance of the key components and parts of hydrogen-feeding system is carried out security and detects;
Main control computer is used for the hydrogen-feeding system simulating plant operations is controlled:
Electrical control cubicles is used for all the sensors, solenoid valve, alarm centrally connected power supply to the hydrogen-feeding system analogue means, independent control electromagnetic valve;
The High Pressure Hydrogen gas cylinder is used to the hydrogen-feeding system analogue means that source of the gas is provided;
Hydrogen gas detector; Be used for the hydrogen of hydrogen-feeding system analogue means is detected;
Wherein, the hydrogen-feeding system analogue means links to each other with High Pressure Hydrogen gas cylinder delivery outlet, and carries out two-way the connection with main control computer; Main control computer and electrical control cubicles, the High Pressure Hydrogen gas cylinder, hydrogen gas detector links to each other, and electrical control cubicles links to each other with High Pressure Hydrogen gas cylinder, hydrogen-feeding system analogue means respectively; That this testing table also comprises is fixing, support the stand of hydrogen-feeding system analogue means.
2, testing table according to claim 1, it is characterized in that described hydrogen-feeding system analogue means comprises: be connected to one or more standard valve and evacuated tube in whole hydrogen cylinder interface, excess flow valve, high-pressure solenoid valve, reduction valve or the safety valve successively with hydrogen pipeline; Be connected flowmeter, pressure transducer, temperature sensor, tensimeter in this pipeline.
3, as testing table as described in the claim 2, it is characterized in that described hydrogen-feeding system analogue means also comprises: be connected the filtrator in this pipeline.
4, testing table according to claim 1 is characterized in that, described electrical control cubicles is made up of the outer feed circuit of sensor and solenoid valve control circuit, alarm control circuit.
5, adopt according to claim 1 that testing table carries out safety detecting method to the performance of the key components and parts of hydrogen-feeding system, it is characterized in that the detection to the excess flow valve security may further comprise the steps:
1) closes the manual needle-valve that is connected excess flow valve one side in the hydrogen-feeding system analogue means pipeline, between the manual ball valve of these excess flow valve both sides and pipeline plug, connect excess flow valve to be tested then, make excess flow valve to be tested in parallel with the excess flow valve on the hydrogen-feeding system analogue means;
2) open source of the gas, and all valves the manual needle-valve in step 1) in the complete opening hydrogen-feeding system analogue means pipeline;
3) increase the opening of this manual needle-valve gradually, control the flow in this pipeline, simulate this pipeline crack conditions;
4) the data sampling frequency of main control computer is set, the flow in the acquisition testing pipeline, the density of hydrogen around the high and low pressure pressure, excess flow valve to be tested;
5) if the hydrogen flowing quantity in the pipeline during more than or equal to the fuel cell rated flow, then high and low pressure force value is relatively analyzed the hydrogen flowing quantity variation tendency simultaneously; If the value of high and low pressure pressure transducer reduces suddenly, perhaps hydrogen flowing quantity reduces suddenly, and excess flow valve then to be measured is normal, change step 6), otherwise this excess flow valve is undesired, starts excess flow valve alarm lamp and hummer simultaneously, changes step 7);
6) if excess flow valve to be tested around density of hydrogen less than hydrogen gas leakage threshold value 1, then excess flow valve is up-to-standard; Send the hydrogen gas leakage one-level reports to the police if density of hydrogen equals hydrogen gas leakage threshold value 1; If density of hydrogen equals hydrogen gas leakage threshold value 2, then send the gas leakage secondary and report to the police, start hummer simultaneously; If density of hydrogen equals hydrogen gas leakage threshold value 3, then send three grades of warnings of gas leakage, start hummer simultaneously, wherein threshold value 1＜threshold value 2＜threshold value 3;
7) close all solenoid valves, detect and finish.
6, adopt according to claim 1 that testing table carries out safety detecting method to the performance of the key components and parts of hydrogen-feeding system, it is characterized in that the detection to the solenoid valve security may further comprise the steps:
1) closes the manual needle-valve that is connected high-pressure solenoid valve one side in the hydrogen-feeding system analogue means pipeline, between the manual ball valve of these high-pressure solenoid valve both sides and pipeline plug, connect solenoid valve to be tested then, make solenoid valve to be tested in parallel with the high-pressure solenoid valve on the hydrogen-feeding system analogue means, and at tested solenoid valve front setting pressure sensor;
2) close the manual needle-valve before the reduction valve in this pipeline, and open source of the gas, make hydrogen through tested solenoid valve;
3) the data sampling frequency of main control computer is set, the density of hydrogen around the pressure of collecting test electromagnetic valve outlet to be tested and the pressure of inlet, solenoid valve to be tested;
4) when tested solenoid valve inlet and outlet pressure is identical, successively close tested solenoid valve and source of the gas, and open the needle-valve before this reduction valve, all gas in the pipeline of draining;
5) if the electromagnetic valve entrance force value is constant, promptly solenoid valve cuts out fully, and then this tested magnetic valve performance is qualified, changes step 6), otherwise manual needle-valve is closed in this solenoid valve inefficacy simultaneously, in order to avoid hydrogen continues to leak, changes step 7);
6) if solenoid valve to be tested around density of hydrogen less than hydrogen gas leakage threshold value 1, then electromagnetic valve quality is qualified; Send the hydrogen gas leakage one-level reports to the police if density of hydrogen equals hydrogen gas leakage threshold value 1; If density of hydrogen equals hydrogen gas leakage threshold value 2, then send the gas leakage secondary and report to the police, start hummer simultaneously; If density of hydrogen equals hydrogen gas leakage threshold value 3, then send three grades of warnings of gas leakage, start hummer simultaneously, wherein threshold value 1＜threshold value 2＜threshold value 3;
7) close all valves, detect and finish.
7, adopt according to claim 1 that testing table carries out safety detecting method to the performance of the key components and parts of hydrogen-feeding system, it is characterized in that the detection to the solenoid valve security may further comprise the steps:
1) closes the manual needle-valve that is connected the reduction valve both sides in the hydrogen-feeding system analogue means pipeline, between the manual ball valve of these reduction valve both sides and pipeline plug, connect reduction valve to be tested then, make reduction valve to be tested in parallel with the reduction valve on the hydrogen-feeding system analogue means;
2) open source of the gas, make gas, open all hand valves and solenoid valve through tested reduction valve;
3) the data sampling frequency of main control computer is set, gathers the pressure of tested reduction valve entrance and exit, the density of hydrogen around the solenoid valve to be tested;
4) if when tested reduction valve inlet pressure is constant, top hole pressure is during smaller or equal to the fuel cell rated pressure, and then this reduction valve performance is qualified, changes step 5), otherwise this reduction valve lost efficacy, and started hummer, changeed step 6);
5) if reduction valve to be tested around density of hydrogen less than hydrogen gas leakage threshold value 1, then reduction valve is up-to-standard; Send the hydrogen gas leakage one-level reports to the police if density of hydrogen equals hydrogen gas leakage threshold value 1; If density of hydrogen equals hydrogen gas leakage threshold value 2, then send the gas leakage secondary and report to the police, start hummer simultaneously; If density of hydrogen equals hydrogen gas leakage threshold value 3, then send three grades of warnings of gas leakage, start hummer simultaneously, wherein threshold value 1＜threshold value 2＜threshold value 3;
6) close all valves, detect and finish.
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