CN116124462A - Test equipment for testing gas adsorption capacity of air filter of fuel cell engine - Google Patents
Test equipment for testing gas adsorption capacity of air filter of fuel cell engine Download PDFInfo
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- 239000007789 gas Substances 0.000 claims abstract description 298
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 95
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 90
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 60
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 40
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- 238000002207 thermal evaporation Methods 0.000 claims abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 78
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 15
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
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- 238000004140 cleaning Methods 0.000 claims description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/0866—Sorption
- G01N2015/0873—Dynamic sorption, e.g. with flow control means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
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Abstract
The invention discloses test equipment for testing the gas adsorption capacity of an air filter of a fuel cell engine, which comprises a Roots blower, an air inlet filter system and an upstream gas input device, wherein the air outlet side of the upstream gas input device is connected to the inlet of a test bin for the gas adsorption test of an air filter element and the inlet of the test bin for the gas adsorption test of the air filter element through an air inlet pipeline, and the outlet of the test bin for the gas adsorption test of the air filter element are connected to an exhaust filter system; comprises a reaction furnace, a thermal evaporation formaldehyde generator, a nitrogen dioxide and ammonia gas detector, a sulfur dioxide detector and formaldehyde CH 2 O detector, VOCS detector, test control system, dynamic calibrator and zero gas generator, thermal evaporation formula toluene generator. The invention realizes the effective test for testing the gas adsorption capacity of the air filter of the fuel cell engineAnd (5) checking.
Description
Technical Field
The invention relates to the technical field of air filter detection, in particular to test equipment for testing the gas adsorption capacity of an air filter of a fuel cell engine.
Background
The air filter, which is an important component of the fuel cell air supply system, has a close and inseparable relationship with the reliability and full life cycle economy of the fuel cell system. The air filter used in the conventional automobile is more important in the fuel cell automobile, and the function of filtering the gas harmful to the proton exchange membrane such as sulfide, nitrogen oxide, etc. must be added on the basis of the filtering function of the conventional air filter.
In terms of system structure, the air filter is arranged at the position of the system closest to the external air, and the negative pressure side of the air compressor has the main functions of filtering out particulate pollutants in the external air entering the electric pile under the traction of the air compressor fan through the air filter element, and filtering out trace gas with a poisoning effect on the electric pile in the entering external air, so that the reliable operation of the fuel cell system is ensured.
The fuel cell has very high requirement on the cleanliness of air intake, and toxic and harmful gas in the ambient air can seriously affect the fuel cell engine, so that the performance of a cell stack is reduced, the power of the cell stack is influenced, and the service life of the cell stack is shortened. Therefore, it is necessary to accurately evaluate the adsorption and filtration ability of the fuel cell air-filter gas.
However, the prior art lacks an effective test apparatus to test the air filter gas adsorption capacity of a fuel cell engine for evaluation.
Disclosure of Invention
The invention aims at solving the technical defects in the prior art, and provides test equipment for testing the gas adsorption capacity of an air filter of a fuel cell engine, which is used for detecting the gas adsorption efficiency, the dirt holding capacity and other performances of the air filter of an automobile fuel cell and related filter products, wherein the types of the gas which can be tested comprise formaldehyde, toluene, n-butane, sulfur dioxide, nitrogen dioxide and ammonia.
The technical scheme adopted for realizing the purpose of the invention is as follows:
the test equipment for testing the gas adsorption capacity of the air filter of the fuel cell engine comprises a Roots blower, an air inlet filter system and an upstream gas input device, wherein the air outlet end of the Roots blower is connected with the air inlet side of the air inlet filter system, the pipe orifice of the upstream gas input device is connected with the air outlet side of the air inlet filter system, the air outlet side of the upstream gas input device is connected to the inlet of a test bin for gas adsorption test of an air filter element and the inlet of the test bin for gas adsorption test of the air filter element through an air inlet pipeline, the front end of the inlet of the test bin for gas adsorption test of the air filter element is provided with a first electric butterfly valve, the front end of an inlet straight pipe section of the test bin connected with the gas adsorption test of the air filter element is provided with a second electric butterfly valve, and the straight pipe section is provided with a first gas concentration acquisition interface; the outlet of the test bin for the air filter element gas adsorption test is connected to an exhaust filtering system through an exhaust pipeline;
the reaction furnace is used for carrying out oxidation treatment on ammonia gas and nitrogen dioxide to generate detectable nitrogen oxides; thermal evaporation type formaldehyde generator, nitrogen dioxide and ammonia gas detector, sulfur dioxide detector and formaldehyde CH 2 O detector, VOCS detector, test control system, dynamic calibrator, zero gas generator, thermal evaporation toluene generator;
the upstream gas input device comprises a plurality of gas input interfaces which are arranged on the outer wall of the pipe, namely a formaldehyde input interface, a toluene input interface, a nitrogen dioxide input interface, a sulfur dioxide input interface, a n-butane input interface and an ammonia input interface;
the thermal evaporation type formaldehyde generator and the thermal evaporation type toluene generator are connected to an upstream gas input device through pipelines, and formaldehyde gas and toluene gas generated by the thermal evaporation type formaldehyde generator and the thermal evaporation type toluene generator respectively pass through the pipelines subjected to heat preservation treatment (a formaldehyde input interface and a toluene input interface which enter the upstream gas input device;
the nitrogen dioxide input interface, the sulfur dioxide input interface, the n-butane input interface and the ammonia input interface are respectively connected with a nitrogen dioxide gas cylinder, a sulfur dioxide gas cylinder, an n-butane gas cylinder and an ammonia gas cylinder through gas conveying pipelines with stop valves and pressure gauges;
the gas convenient sampling switching device comprises two sampling connectors, an instrument device for connecting a dynamic calibrator and a zero gas generator for calibration, a first reserved gas sampling interface and a second reserved gas sampling interface, and four gas sampling interfaces;
the two sampling connection ports comprise sampling connection ports which are used for connecting a test cabin for air filter gas adsorption test and sampling connection ports which are used for connecting a test cabin for air filter element gas adsorption test,
the four gas sampling interfaces comprise gas sampling interfaces for testing toluene and n-butane, gas sampling interfaces for testing formaldehyde, gas sampling interfaces for testing sulfur dioxide and gas sampling interfaces for testing nitrogen dioxide and ammonia gas;
the sampling connector is used for connecting a sampling connector of a test cabin for the air filter gas adsorption test and is connected to one of a first gas concentration acquisition interface, a second gas concentration acquisition interface arranged on the air outlet and a third gas concentration acquisition interface arranged on a test cabin body for the air filter gas adsorption test according to test requirements;
the gas convenient sampling switching device is provided with a hose with a quick connector, one end of the hose with the quick connector is connected with one of the two sampling connectors, and the other end of the hose with the quick connector is connected with a corresponding gas sampling interface according to the type of the test gas;
the port on the front face of the panel of the gas sampling interface for testing toluene and n-butane is connected to the corresponding gas sampling interface through a hose with a quick-plug connector, and the interface on the back face of the panel is connected to a VOCS detector for detection; the port on the front side of the panel of the gas sampling interface for testing formaldehyde is connected to the corresponding gas sampling connection port through a hose with a quick-plug connector, and the interface on the back side of the panel is connected to formaldehyde CH 2 Detecting by an O detector; the port on the front side of the panel of the gas sampling interface for testing sulfur dioxide is connected to the corresponding gas sampling connection port through a hose with a quick connector, and the interface on the back side of the panel is connected to a sulfur dioxide detector for detection; the port on the front face of the panel of the gas sampling interface for testing nitrogen dioxide and ammonia gas is connected to the corresponding gas sampling interface through a hose with a quick-plug connector, the interface on the back face of the panel is connected to the reaction furnace through a hose, and the reacted gas is connected to the nitrogen dioxide and ammonia gas detector for detection;
the test control system is control system software of test equipment, and the pipelines of the test equipment are respectively provided with the control system software for realizing real-time acquisition and display of temperature, humidity, resistance, air quantity and test concentration, realizing data communication and feedback regulation with the Roots blower and realizing automatic regulation of the air quantity; independent data processing is carried out to realize removal efficiency calculation, adsorption capacity integral calculation, holding capacity integral calculation, rise time calculation and desorption curve processing; the data report in the test standard can be independently generated, and the data report comprises sample information, test system information, a removal efficiency curve, a pressure drop curve, an adsorption capacity curve, a holding capacity curve and a desorption curve.
The test equipment for testing the gas adsorption capacity of the air filter of the fuel cell engine, disclosed by the invention, fills the blank that no special equipment exists in China, can accurately evaluate the adsorption and filtration capacity of the air filter of the fuel cell to various gases, and can effectively promote the development of the route of the fuel cell engine in China.
Drawings
FIG. 1 is a front perspective view of a fuel cell engine air cleaner gas adsorption capacity test apparatus according to the present invention;
FIG. 2 is a top perspective view of a fuel cell engine air cleaner gas adsorption capacity test apparatus according to the present invention;
FIG. 3 is an isometric view of an upstream gas input connector of a fuel cell engine air cleaner gas adsorption capacity test apparatus according to the present invention;
FIG. 4 is an isometric view of a test cartridge for an air cleaner gas adsorption test of a fuel cell engine air cleaner gas adsorption capacity test apparatus according to the present invention;
FIG. 5 is an isometric view of a test equipment gas supply system for fuel cell engine air cleaner gas adsorption capacity according to the present invention;
FIG. 6 is an isometric view of a flow pressure control system in a fuel cell engine air cleaner gas adsorption capacity test apparatus gas supply system according to the present invention;
fig. 7 to 8 are two axial side views of a device for conveniently sampling and switching gas for testing the gas adsorption capacity of an air cleaner of a fuel cell engine according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 8, a test apparatus for testing gas adsorption capacity of an air cleaner of a fuel cell engine according to an embodiment of the present invention includes:
the Roots blower 1, an air inlet filter system 2 and an upstream gas input device 3, wherein the pipe orifice of the upstream gas input device 3 is connected with the pipe end of the air inlet filter system 2 and a first straight pipe section 4, the first straight pipe section 4 is connected with a second straight pipe section 6 (a stainless steel straight pipe with the inner diameter of 180 mm) through a first elbow joint 5 (such as a stainless steel joint with the inner diameter of 180mm, the pipe and the pipe are directly connected by adopting a flange, a rubber cushion with gas corrosion resistance is added in the middle of the flange), and the second straight pipe section 6 is communicated withThe third straight pipe section 9 (such as a stainless steel pipe with the inner diameter of 180 mm) and the inlet of a test bin 13 for air filter element gas adsorption test are connected through a three-way joint 8, a first electric butterfly valve 7 is arranged between the inlet of the test bin 13 for air filter element gas adsorption test and the three-way joint 8, the other end of the third straight pipe section 9 is connected with a second electric butterfly valve 10, the second electric butterfly valve 10 is connected with a fourth straight pipe section 12 (such as a stainless steel straight pipe section with the inner diameter of 180 mm) through a second elbow joint 11 (such as a stainless steel elbow joint with the inner diameter of 180 mm), the other end of the fourth straight pipe section 12 is connected with the inlet of a test bin 15 for air filter element gas adsorption test, and a first gas concentration acquisition interface 14 (with the inner diameter of 5mm is arranged on the straight pipe section of the test bin 15 for air filter element gas adsorption test) is arranged on the fourth straight pipe section 12; the reaction furnace 17 is used for oxidizing ammonia and nitrogen dioxide to generate detectable nitrogen oxides; thermal evaporation formaldehyde generator 18, nitrogen dioxide and ammonia gas detector 19, sulfur dioxide detector 20, formaldehyde CH 2 An O detector 21, a VOCS detector 22, a test control system 23, a dynamic calibrator and zero gas generator 24, a thermal evaporation type toluene generator 25; the thermal evaporation formaldehyde generator 18 and the thermal evaporation toluene generator 25 are connected to the upstream gas input device 3 through pipelines, and formaldehyde gas and toluene gas generated by the respective thermal evaporation formaldehyde generator are introduced into a formaldehyde input port 33 and a toluene input port 34 of the upstream gas input device 3 through pipelines (subjected to heat preservation treatment).
As a preferred embodiment, the test device placement frame 16 is further included, and is used for installing and placing each module of the system, and can be constructed by adopting aluminum profiles, so that the test device placement frame is ventilated and transparent, and the risk caused by the too high concentration of gas in local corners can be effectively prevented.
Wherein, the Roots blower 1 adopts a negative pressure system, the system operates under negative pressure, the safety of testers can be effectively ensured, and the air inlet and air quantity adjusting range is 50m 3 /h-1000m 3 And the range of/h is provided with a silencing device, and the air quantity data of the flowmeter is fed back in real time by using a fan, a frequency converter and a PLC regulation mode, so that the random regulation of the high and low air quantity is realized.
Wherein, the inlet air filtering system 2 is used for treating the test inlet air, and is provided with a cleaning device for filtering out the particulate matters of the inlet air and a device for removing the gas pollutants, and is a high-efficiency filter with at least H13 grade which is superior to that defined in EN 1822-1. The preceding stage should arrange F7 or F8 class medium efficiency filters conforming to EN 779 definition.
The first electric butterfly valve 7 is closed when testing the gas adsorption efficiency of the air filter, and is opened when testing the gas adsorption efficiency of the air filter element. The second electric butterfly valve 10 is opened when testing the gas adsorption efficiency of the air cleaner, and is closed when testing the gas adsorption efficiency of the air cleaner.
In the embodiment of the invention, the size of the test bin 13 for the air filter element gas adsorption test meets the standard requirements of ISO/TS 11155-2:2009. The test bin 15 for the air filter gas adsorption test has enough space for installing and arranging the air filter of the fuel cell, and can be used for detecting and installing the air filters with different sizes; the air filter test section can be provided with a glass observation window, so that the operation condition observation of the air filter and equipment can be realized.
The nitrogen dioxide and ammonia gas detector 19 tests the concentration of 30ppm, and the measuring range is as follows: 0-100ppm, lowest detection limit: 1ppb (120 s average), accuracy: zero drift (24 h): span drift of < 1 ppb: 1% F.S, response time (0-90%): 120s (10 s average time).
The sulfur dioxide detector 20 is used for measuring 30ppm of concentration, and adopts a pulse fluorescence test method, and the measuring range is as follows: 0-100ppm, lowest detection limit: 2.0ppb (Manual SO) 2 Or combined sulfur mode, average time 10 seconds), 6.0ppb (auto mode SO 2 Average time: 10 seconds). Zero drift (24 h): span drift (24 hours) of < 1 ppb: 1% f.s, response time 110s (60 s average), linearity: + -1% F.S.
Said formaldehyde CH 2 O detector 21, test concentration 2ppm, sampling resolution: 0.001ppm, electrochemical sensor, measurement range: (0-2) ppm, precision: reading ± 2.0%, weightRenaturation: zero drift (24 h) at 0.5% full scale: span drift (24 h): <.+ -. 2.0% full scale.
The VOCS detector 22, toluene (C 7 H 8 ) 80ppm, n-butane (C) 4 H 10 ) The on-line gas chromatograph uses FID detector accuracy 2% readings or + -0.1 ppm (maximum), minimum detection limit: 0.05ppm, measuring range: (0-100 ppm), zero drift (24 hours): < 0.50ppm, sample flow: 0.75-1.5L/m.
The test control system 23 is control system software of test equipment, and pipelines of the test equipment are respectively provided with the control system software, so that real-time acquisition and display of data such as temperature, humidity, resistance, air quantity and test concentration can be realized. The control system software of the test system pipeline can realize data communication and feedback adjustment with the fan, the frequency converter and the flowmeter, and the software can realize automatic adjustment of air quantity; the data processing function can be independently realized, and the removal efficiency calculation, the adsorption capacity integral calculation, the holding capacity integral calculation, the rise time calculation, the desorption curve and the like can be realized; the data reports in the test standard can be generated independently, and the test report contains sample information, test system information, a removal efficiency curve, a pressure drop curve, an adsorption capacity curve, a holding capacity curve, a desorption curve and the like.
The dynamic calibrator and zero gas generator 24 can flexibly configure 1: a 1 to 1:2000 dilution ratio to provide accurate concentrations of sulfur dioxide, nitrogen oxides, nitrogen dioxide, carbon monoxide, methane, and non-methane hydrocarbons or other gases; the method is used for zero point calibration, cross point calibration, gas analyzer leakage detection, linear verification and performance inspection.
Referring to fig. 2, the air filter system further comprises an air inlet of the air filter system 30, wherein the air inlet of the air filter system is connected with a stainless steel straight pipe section 28 with the inner diameter of 180mm, an opening is formed in the pipe wall of the stainless steel straight pipe section 28, the inner diameter of the stainless steel straight pipe section 29 is 180mm, a stainless steel elbow 27 with the inner diameter of 180mm is connected and communicated with the stainless steel straight pipe section 28 with the inner diameter of 180mm, the stainless steel straight pipe section 29 with the inner diameter of 180mm is connected with the air outlet end of the test bin 13 for the air filter element gas adsorption test, and the other end of the stainless steel straight pipe section 26 with the inner diameter of 180mm is connected with the air outlet end of the test bin 15 for the air filter gas adsorption test.
The exhaust filtering system is used for purifying gas after test by test equipment to meet the gas emission requirement, is provided with a high-efficiency filter at least in H13 (0.3 mu m particle efficiency is more than or equal to 99.97%) level which accords with EN1822-1 definition, and is provided with an F7 or F8 level medium-efficiency filter which accords with EN 779 definition at the front stage; the environmental atmosphere emission requirement is met.
As a preferred embodiment, the air outlet end of the exhaust filtering system 30 is connected to a gas flowmeter 32 through a straight pipe section 31, and the gas flow is collected in real time and fed back to the test control system.
Referring to fig. 3, the upstream gas input device 3 includes a plurality of input interfaces, namely a formaldehyde input interface 33, a toluene input interface 34, a nitrogen dioxide input interface 35, a sulfur dioxide input interface 36, a n-butane input interface 37 and an ammonia input interface 38. The inner diameter of the pipe of the input interface is 5mm, and the inner diameter of the main pipe of the upstream gas input device 3 is a stainless steel straight pipe section of 180 mm.
Wherein, formaldehyde gas input interface 33 is connected by the output pipeline of thermal evaporation formula formaldehyde generator 18, toluene gas input interface 34 is connected by the output pipeline of thermal evaporation formula toluene generator 25.
The nitrogen dioxide gas input interface 35 is connected by a nitrogen dioxide gas cylinder placed in the second gas cylinder cabinet 46 through a nitrogen dioxide gas conveying pipeline 59, a stop valve and a fifth gas conveying pipeline 52 of a pressure gauge 64, a gas mass flow controller 63 and a pneumatic stop valve 62.
The sulfur dioxide gas input interface 36 is connected with a sulfur dioxide gas cylinder in the second gas cylinder cabinet 46 through a third gas conveying pipeline 50, a sulfur dioxide gas conveying pipeline 57 of a stop valve and a pressure gauge 64, a gas mass flow controller 63 and a pneumatic stop valve 62.
The n-butane gas input port 37 is connected from an n-butane gas bottle placed in the first gas bottle cabinet 45 through the second gas conveying pipeline 49, through the stop valve and the n-butane gas conveying pipeline 56 of the pressure gauge 64, and through the gas mass flow controller 63 and the pneumatic stop valve 62.
The ammonia gas input port 38 is connected to an ammonia gas cylinder in a third gas cylinder cabinet 47 through a first gas delivery pipeline 48, a stop valve and a nitrogen gas delivery pipeline 55 of a pressure gauge 64, a gas mass flow controller 63 and a pneumatic stop valve 62.
Referring to fig. 4, the air outlet pipe section 39 of the test chamber for air filter gas adsorption test has an inner diameter of 180mm, two ends of the pipeline are connected by hoops, a second gas concentration collecting interface 40 is arranged on the air outlet of the air outlet pipe section, a third gas concentration collecting interface 41 is arranged on the chamber body of the test chamber for air filter gas adsorption test, the air inlet pipe section 42 of the test chamber for air filter gas adsorption test has an inner diameter of 180mm, and two ends of the pipeline are connected by hoops; the cabinet body 43 of the test bin for the air filter gas adsorption test is made of stainless steel, has the size of 1000mm multiplied by 800mm, is provided with a bin cover 44 with a glass observation window, and is wrapped by gas corrosion resistant rubber around the bin cover 44, so that no gas leakage is ensured when the bin cover is closed.
Referring to fig. 5, fig. 5 shows a gas supply system, which includes a first gas cylinder 45, a second gas cylinder 46, and a third gas cylinder 47, and is provided with a matching pipeline, where the gas cylinder should seal the ventilation function and the gas leakage alarm function, the matching pipeline adopts two-stage decompression, is provided with a decompression valve, a stop valve, and the stainless steel pipeline adopts a BA grade or more 316L stainless steel material. The gas conveying pipelines with the inner diameters of 5mm and stainless steel materials formed at one time effectively ensure that gas cannot leak in the test process, and the gas conveying pipelines comprise a first gas conveying pipeline 48, a second gas conveying pipeline 49, a third gas conveying pipeline 50, a fourth gas conveying pipeline 51, a fifth gas conveying pipeline 52, a sixth gas conveying pipeline 53 and a seventh gas conveying pipeline 54.
Referring to fig. 6, a nitrogen gas delivery line 55 is provided, and the nitrogen gas delivery line 55 is in communication with a sulfur dioxide gas delivery line 57, a nitrogen dioxide gas delivery line 59, an n-butane gas delivery line 56, and an ammonia gas delivery line 58, and functions to purge gas remaining in the pipeline and a mass flow Meter (MFC) 63 before and after the above-described gas test; the front ends of the nitrogen gas conveying pipeline 55, the sulfur dioxide gas conveying pipeline 57, the nitrogen dioxide gas conveying pipeline 59, the n-butane gas conveying pipeline 56 and the ammonia gas conveying pipeline 58 are respectively provided with a gas Mass Flow Controller (MFC) 63, and a pneumatic stop valve 62 is respectively arranged in front of and behind the gas Mass Flow Controller (MFC) 63, wherein the gas Mass Flow Controller (MFC) 63 is used for controlling the gas mass flow.
The nitrogen dioxide gas pipeline is subjected to heat preservation treatment from the gas cylinder cabinet to the whole pipe section entering the test pipeline system through the nitrogen dioxide gas input interface 35, and is wrapped by heat insulation cotton.
A hydrogen gas supply line 60 and an air gas supply line 61 are provided, and hydrogen gas enters the VOCS detector 22 together with air, and chemically reacts with n-butane and toluene in the VOCS detector 22 to generate a hydrocarbon that can be detected.
Each gas delivery pipeline (including a nitrogen gas delivery pipeline 55, a sulfur dioxide gas delivery pipeline 57, a nitrogen dioxide gas delivery pipeline 59, a normal butane gas delivery pipeline 56, an ammonia gas delivery pipeline 58, a hydrogen gas delivery pipeline 60 and an air gas delivery pipeline 61) is provided with a stop valve and a pressure gauge 64 for controlling gas on-off and monitoring pipeline pressure.
Referring to fig. 7 to 8, as an embodiment, a gas convenient sampling switching device 65 is provided, where the gas convenient sampling switching device 65 includes a sampling connection port 66 for connecting a test chamber for gas adsorption test of an air filter, a sampling connection port 68 for connecting a test chamber for gas adsorption test of an air filter element, an instrument and equipment calibration first reserved gas sampling port 69 and a second reserved gas sampling port 70 for connecting a dynamic calibrator and the zero gas generator 24 for calibration, a gas sampling port 71 for testing toluene and n-butane, a gas sampling port 72 for testing formaldehyde, a gas sampling port 73 for testing sulfur dioxide, and a gas sampling port 74 for testing nitrogen dioxide and ammonia.
Wherein, the sampling connection port 66 for connecting the test chamber of the air cleaner gas adsorption test is connected to one of the first gas concentration collecting port 14, the second gas concentration collecting port 40 arranged on the gas outlet, and the third gas concentration collecting port 41 arranged on the chamber body of the test chamber of the air cleaner gas adsorption test with a hose according to the test requirement.
The gas convenient sampling switching device 65 is provided with a hose 67 with a quick-connection connector, one end of the hose is connected with a gas sampling connector (a sampling connector 66 for connecting a test bin for gas adsorption test of the air filter and a sampling connector 68 for connecting a test bin for gas adsorption test of the air filter core), and the other end of the hose is connected with a corresponding gas sampling connector according to the type of test gas.
For the gas sampling interface 71 when testing toluene and n-butane, the front port of the panel is connected to the corresponding gas sampling interface through a hose 67 with a quick-plug connector, and the back port of the panel is connected to the VOCS detector 22 through a hose for detection. For the gas sampling interface 72 used for testing formaldehyde, the front port of the panel is connected to the corresponding gas sampling interface through a hose 67 with a quick-plug connector, and the back port of the panel is connected to the formaldehyde detector 21 through a hose for detection. For the gas sampling interface 73 used for testing sulfur dioxide, the port on the front surface of the panel is connected to the corresponding gas sampling interface through the hose 67 with the quick-plug connector, and the interface on the back surface of the panel is connected to the sulfur dioxide detector 20 through the hose for detection. For the gas sampling interface 74 for testing nitrogen dioxide and ammonia gas, the front port of the panel is connected to the corresponding gas sampling interface through a hose 67 with a quick-plug connector, the back port of the panel is connected to the reaction furnace 17 through a hose, and the reacted gas is connected to the nitrogen dioxide and ammonia gas detector 19 through a hose for detection.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof;
the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The test equipment for testing the gas adsorption capacity of the air filter of the fuel cell engine is characterized by comprising a Roots blower, an air inlet filter system and an upstream gas input device, wherein the air outlet end of the Roots blower is connected with the air inlet side of the air inlet filter system, the pipe orifice of the upstream gas input device is connected with the air outlet side of the air inlet filter system, the air outlet side of the upstream gas input device is connected to the inlet of a test bin for gas adsorption test of an air filter element and the inlet of the test bin for gas adsorption test of the air filter element through an air inlet pipeline, the front end of the inlet of the test bin for gas adsorption test of the air filter element is provided with a first electric butterfly valve, the front end of an inlet straight pipe section of the test bin for connecting the gas adsorption test of the air filter element is provided with a second electric butterfly valve, and the straight pipe section is provided with a first gas concentration acquisition interface; the outlet of the test bin for the air filter element gas adsorption test is connected to an exhaust filtering system through an exhaust pipeline;
the reaction furnace is used for oxidizing ammonia and nitrogen dioxide to generate detectable nitrogenAn oxide; thermal evaporation type formaldehyde generator, nitrogen dioxide and ammonia gas detector, sulfur dioxide detector and formaldehyde CH 2 O detector, VOCS detector, test control system, dynamic calibrator, zero gas generator, thermal evaporation toluene generator;
the upstream gas input device comprises a plurality of gas input interfaces which are arranged on the outer wall of the pipe, namely a formaldehyde input interface, a toluene input interface, a nitrogen dioxide input interface, a sulfur dioxide input interface, a n-butane input interface and an ammonia input interface;
the thermal evaporation type formaldehyde generator and the thermal evaporation type toluene generator are connected to the upstream gas input device through pipelines, and formaldehyde gas and toluene gas generated by the thermal evaporation type formaldehyde generator and the thermal evaporation type toluene generator respectively enter a formaldehyde input interface and a toluene input interface of the upstream gas input device through pipelines subjected to heat preservation treatment;
the nitrogen dioxide input interface, the sulfur dioxide input interface, the n-butane input interface and the ammonia input interface are respectively connected with a nitrogen dioxide gas cylinder, a sulfur dioxide gas cylinder, an n-butane gas cylinder and an ammonia gas cylinder through gas conveying pipelines with stop valves and pressure gauges;
the gas convenient sampling switching device comprises two sampling connectors, an instrument device for connecting a dynamic calibrator and a zero gas generator for calibration, a first reserved gas sampling interface and a second reserved gas sampling interface, and four gas sampling interfaces;
the two sampling connection ports comprise sampling connection ports which are used for connecting a test cabin for air filter gas adsorption test and sampling connection ports which are used for connecting a test cabin for air filter element gas adsorption test,
the four gas sampling interfaces comprise gas sampling interfaces for testing toluene and n-butane, gas sampling interfaces for testing formaldehyde, gas sampling interfaces for testing sulfur dioxide and gas sampling interfaces for testing nitrogen dioxide and ammonia gas;
the sampling connector is used for connecting a sampling connector of a test cabin for the air filter gas adsorption test and is connected to one of a first gas concentration acquisition interface, a second gas concentration acquisition interface arranged on the air outlet and a third gas concentration acquisition interface arranged on a test cabin body for the air filter gas adsorption test according to test requirements;
the gas convenient sampling switching device is provided with a hose with a quick connector, one end of the hose with the quick connector is connected with one of the two sampling connectors, and the other end of the hose with the quick connector is connected with a corresponding gas sampling interface according to the type of the test gas;
the port on the front face of the panel of the gas sampling interface for testing toluene and n-butane is connected to the corresponding gas sampling interface through a hose with a quick-plug connector, and the interface on the back face of the panel is connected to a VOCS detector for detection; the port on the front side of the panel of the gas sampling interface for testing formaldehyde is connected to the corresponding gas sampling connection port through a hose with a quick-plug connector, and the interface on the back side of the panel is connected to formaldehyde CH 2 Detecting by an O detector; the port on the front side of the panel of the gas sampling interface for testing sulfur dioxide is connected to the corresponding gas sampling connection port through a hose with a quick connector, and the interface on the back side of the panel is connected to a sulfur dioxide detector for detection; the port on the front face of the panel of the gas sampling interface for testing nitrogen dioxide and ammonia gas is connected to the corresponding gas sampling interface through a hose with a quick-plug connector, the interface on the back face of the panel is connected to the reaction furnace through a hose, and the reacted gas is connected to the nitrogen dioxide and ammonia gas detector for detection;
the test control system is control system software of test equipment, and the pipelines of the test equipment are respectively provided with the control system software for realizing real-time acquisition and display of temperature, humidity, resistance, air quantity and test concentration, realizing data communication and feedback regulation with the Roots blower and realizing automatic regulation of the air quantity; independent data processing is carried out to realize removal efficiency calculation, adsorption capacity integral calculation, holding capacity integral calculation, rise time calculation and desorption curve processing; and independently generating a data report in the test standard, wherein the data report comprises sample information, test system information, a removal efficiency curve, a pressure drop curve, an adsorption capacity curve, a retention capacity curve and a desorption curve.
2. The test device for testing the gas adsorption capacity of the air filter of the fuel cell engine according to claim 1, wherein the Roots blower adopts a negative pressure system, the system operates at negative pressure, and the air inlet quantity adjusting range is 50m 3 /h-1000m 3 And the range of/h is provided with a silencing device, and the air quantity data of the flowmeter is fed back in real time by using a fan, a frequency converter and a PLC regulation mode, so that the random regulation of the high and low air quantity is realized.
3. The test apparatus for testing the gas adsorption capacity of an air cleaner of a fuel cell engine according to claim 1, wherein the first electrically operated butterfly valve is closed when testing the gas adsorption efficiency of the air cleaner and is opened when testing the gas adsorption efficiency of the filter element of the air cleaner; the second electric butterfly valve is opened when the gas adsorption efficiency of the air filter is tested, and is closed when the gas adsorption efficiency of the filter element of the air filter is tested.
4. The test apparatus for testing the gas adsorption capacity of an air cleaner of a fuel cell engine according to claim 1, wherein the test chamber for the gas adsorption test of the air cleaner is provided with a glass observation window for realizing the observation of the operation conditions of the air cleaner and the apparatus.
5. The test device for testing the gas adsorption capacity of the air filter of the fuel cell engine according to claim 1, wherein the gas outlet end of the exhaust gas filtering system is connected with a gas flowmeter for collecting the gas flow of the exhaust gas in real time and feeding back the gas flow to the test control system; the air inlet filter system is used for air filtering treatment of test air inlet, is provided with a cleaning device for filtering out particles of air inlet and a device for removing gas pollutants, and is a high-efficiency filter with at least H13 grade which is superior to that defined in EN 1822-1; the preceding stage should arrange F7 or F8 class medium efficiency filters conforming to EN 779 definition.
6. The test apparatus for testing the gas adsorption capacity of an air cleaner for a fuel cell engine according to claim 1, wherein the test apparatus is provided with a frame for mounting each module for placing the test apparatus, and is constructed by using an aluminum profile, and is ventilated and transparent to prevent the risk caused by the excessive local gas concentration.
7. A test apparatus for testing the gas adsorption capacity of an air cleaner for a fuel cell engine according to claim 1, wherein the exhaust gas filtering system is provided with a high efficiency filter of at least H13 grade according to EN1822-1 and a front stage is provided with a medium efficiency filter of F7 or F8 grade according to EN 779.
8. The test apparatus for testing the gas adsorption capacity of an air cleaner of a fuel cell engine according to claim 1, wherein the gas outlet end of the exhaust gas filtering system is connected to a gas flowmeter through a straight pipe section for collecting the gas flow in real time and feeding back to the test control system.
9. The test apparatus for testing the gas adsorption capacity of an air cleaner for a fuel cell engine according to claim 1, wherein a nitrogen gas delivery line is provided, and the nitrogen gas delivery line is communicated with the sulfur dioxide gas delivery line, the nitrogen dioxide gas delivery line, the n-butane gas delivery line, and the ammonia gas delivery line for purging the piping and the gas remaining in the mass flowmeter before and after the gas test.
10. The test apparatus for testing the gas adsorption capacity of an air cleaner for a fuel cell engine according to claim 1, wherein a hydrogen gas delivery line and an air gas delivery line are provided, connected to the VOCS detector, for delivering hydrogen gas into the VOCS detector together with air, and wherein the hydrogen gas chemically reacts with n-butane and toluene to produce a detectable hydrocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310111039.XA CN116124462A (en) | 2023-02-14 | 2023-02-14 | Test equipment for testing gas adsorption capacity of air filter of fuel cell engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310111039.XA CN116124462A (en) | 2023-02-14 | 2023-02-14 | Test equipment for testing gas adsorption capacity of air filter of fuel cell engine |
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| CN116124462A true CN116124462A (en) | 2023-05-16 |
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| CN202310111039.XA Pending CN116124462A (en) | 2023-02-14 | 2023-02-14 | Test equipment for testing gas adsorption capacity of air filter of fuel cell engine |
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| Country | Link |
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| CN (1) | CN116124462A (en) |
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