CN210269174U - Combustor test bench - Google Patents
Combustor test bench Download PDFInfo
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- CN210269174U CN210269174U CN201921637474.1U CN201921637474U CN210269174U CN 210269174 U CN210269174 U CN 210269174U CN 201921637474 U CN201921637474 U CN 201921637474U CN 210269174 U CN210269174 U CN 210269174U
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Abstract
The utility model discloses a combustor test bed, which comprises a control cabinet, a fuel tank connected with the control cabinet and a combustor, wherein a plurality of fuel cavities are arranged in the fuel tank, each fuel cavity is respectively connected with the combustor, and an air inlet and an air outlet are arranged on the combustor; during testing, the air inlet is connected with the air supply system, and the air outlet is connected with the post-processor. The utility model discloses a combustor test bench is equipped with a plurality of fuel chamber, each fuel chamber is respectively through on the tube coupling to mixing chamber, the fuel in each fuel chamber is inputed combustor internal combustion again after the intensive homogeneous mixing of mixing chamber, in the tail gas direct input after-treatment ware that produces after the burning, the tail gas that is the production after the burning in the input after-treatment ware, guarantee that the gas component of combustor output is the same with real engine exhaust's gas component, ensure that the tail gas of combustor output can accurately simulate engine exhaust's true condition, the simulation accuracy is high.
Description
Technical Field
The utility model belongs to the technical field of the design verification technique of engine post processor and specifically relates to a combustor test bench.
Background
The post-processor in the engine exhaust system is mainly used for post-processing the automobile exhaust and converting Nitrogen Oxide (NO) in the automobile exhaustX) Converting harmful gases such as hydrocarbon (CH) and Carbon Oxide (CO) into nitrogen (N)2) Water (H)2O), carbon dioxide (CO)2) And the like. At present, DOC (oxidative catalyst) + DPF (particle filter) + SCR (selective catalytic reduction) technology is commonly adopted by the national six countries of diesel engines to carry out aftertreatment on exhaust emission, a urea tank is arranged in an exhaust pipe, urea in the urea tank is used as a reducing agent and is sprayed into the exhaust pipe through a nozzle, and Nitrogen Oxide (NO) in the exhaust gasX) Generating harmless nitrogen (N) under the action of catalyst2) And water (H)2O), and finally discharged from the exhaust pipe, thereby achieving the purposes of energy conservation and emission reduction. In the sixth stage of China, due to the fact that regulations are tightened, the requirement on urea injection precision is higher, and the control of crystallization of urea in a mixer is the key for improving the aftertreatment conversion efficiency.
The Chinese patent CN106226085B discloses a urea crystallization test method for an exhaust pipe of a diesel engine SCR aftertreatment system, which comprises the following steps: p1: selecting a test engine; p2: hot running-in of the engine; p3: engine performance and raw emissions validation; p4: confirming that the post-treatment system works normally, and confirming the emission of the SCR post-treatment system; p5: the method for testing the crystallization of the exhaust pipe of the SCR system comprises the following steps: the test time is 3 hours, the test time is divided into 1 hour of WHTC (transient cycle) circulation and 2 hours of low-temperature low-exhaust-flow-limit working condition steady-state test circulation, and the urea crystallization conditions in the SCR catalyst and in the exhaust pipe are checked after the test is finished; p6: and judging whether the crystallization test of the SCR after-treatment system passes or not. This verification method has the following problems: (1) the urea crystallization test method is a verification method based on an engine bench, wherein the engine bench needs to obtain a target engine firstly, namely a proper engine prototype needs to be selected from a set engine model, or a corresponding bench test is carried out on the engine prototype after the prototype is produced according to a new engine development scheme. The engine pedestal needs to be built for a long time, and labor cost is high. And the engine needs to pass through a longer engine hot running-in process before the test is carried out, and also needs to pass through a longer engine cooling process after the test is finished, so that the time required by the whole complete test process is longer. (2) The urea crystallization test method can only be used for testing on the existing engine pedestal, and for the engine scheme of which only the design scheme is determined but no prototype is available, the test method cannot be used for test evaluation, and the application range is limited.
The utility model discloses a diesel engine after-treatment system performance test bench device based on combustor is disclosed in chinese utility model patent CN206638424U, and the device is the diesel engine after-treatment system performance test bench device based on combustor, through control oil spout, ignition, burning, simulation diesel engine tail gas. The air that the device's frequency conversion fan produced burns the exhaust that produces after the mixed combustion section gets into the dilution cavity, mixes with the dilution air that dilution fan produced in the dilution cavity. The device dilutes the mixture to the exhaust after the burning, and the dilution air that dilution fan provided is the lower air of concentration that does not burn, contains the gas composition that does not burn in the gas after diluting the mixture, and there is certain difference between the gas composition in the gas mixture and the gas composition in the actual diesel engine tail gas, can not simulate the true condition of diesel engine tail gas very accurately, and simulation accuracy is relatively poor. The device is mainly directed at the test bench of the diesel engine aftertreatment system, and the application range is small.
SUMMERY OF THE UTILITY MODEL
The simulation accuracy of the test bench device for testing the performance of the existing diesel engine aftertreatment system based on the combustor is poor; the urea crystallization test method for the exhaust pipe of the SCR post-treatment system of the diesel engine is a verification method based on an engine pedestal, has the defects of time-consuming construction of the engine pedestal, high labor cost and the like, provides a reasonable combustor test pedestal and a combustor-based mixer steady-state crystallization test method, and has high combustor simulation accuracy; the simulation test is carried out based on the combustor, the combustor is simple to obtain and build, and the cost is reduced.
The utility model discloses the technical scheme who adopts as follows:
a combustor test bed comprises a control cabinet, a fuel tank connected with the control cabinet and a combustor, wherein a plurality of fuel cavities are arranged in the fuel tank, each fuel cavity is respectively connected with the combustor, and the combustor is provided with an air inlet and an air outlet; during testing, the air inlet is connected with the air supply system, and the air outlet is connected with the post-processor.
As a further improvement of the above technical solution:
a mixing cavity is arranged between the fuel tank and the burner, each fuel cavity of the fuel tank is respectively connected with the mixing cavity, and a first electromagnetic valve and a first flowmeter are arranged between each fuel cavity and the mixing cavity; a second electromagnetic valve and a second flowmeter are arranged between the mixing cavity and the combustor; each first electromagnetic valve and each second electromagnetic valve are respectively connected with the control cabinet, and the control cabinet can adjust the opening degree of the first electromagnetic valve and the opening degree of the second electromagnetic valve.
The utility model discloses a combustor test bench is equipped with a plurality of fuel chamber, each fuel chamber is respectively through on the tube coupling to mixing chamber, the fuel in each fuel chamber is inputed combustor internal combustion again after the intensive homogeneous mixing of mixing chamber, in the tail gas direct input after-treatment ware that produces after the burning, the tail gas that is the production after the burning in the input after-treatment ware, guarantee that the gas component of combustor output is the same with real engine exhaust's gas component, ensure that the tail gas of combustor output can accurately simulate engine exhaust's true condition, the simulation accuracy is high.
The exhaust port is connected with a tail gas detector and a third electromagnetic valve, the tail gas detector and the third electromagnetic valve are connected with a control cabinet, and the control cabinet controls the third electromagnetic valve to be opened and closed according to detection data of the tail gas detector.
The utility model discloses a tail gas detector of combustor test bench, third solenoid valve are connected with the switch board electricity, and the switch board is according to the switching of the detection data control third solenoid valve of tail gas detector, and the detection data is different with the former row data of inputing on the switch board, and the third solenoid valve is in the off-state; and meanwhile, the third electromagnetic valve is opened, the bypass pipe is closed, and the tail gas is input into the post-processor through the third electromagnetic valve, so that the gas input into the post-processor is matched with the real engine tail gas, and the accuracy of tail gas simulation is ensured.
The same fuel or different fuels are stored in the plurality of fuel cavities.
The utility model discloses a same fuel can be deposited in every fuel cavity of combustor test bench, also can deposit different fuels, like diesel oil, methyl alcohol, ethanol, biofuel etc. through exporting different fuels, can carry out the original row simulation to diesel engine, gasoline engine, natural gas engine or other new forms of energy engines, the range of application is wide.
The aftertreatment device is provided with a DOC module, a DPF module, a mixer module and an SCR + ASC module; be provided with the nozzle on the blender module, the nozzle is connected to the urea jar through the urea pump on, is provided with the DCU module on the urea pump, and the DCU module is connected with the switch board electricity.
The utility model has the advantages as follows:
the utility model discloses a combustor test bench is equipped with a plurality of fuel chamber, each fuel chamber is respectively through on the tube coupling to mixing chamber, the fuel in each fuel chamber is inputed combustor internal combustion again after the intensive homogeneous mixing of mixing chamber, in the tail gas direct input after-treatment ware that produces after the burning, the tail gas that is the production after the burning in the input after-treatment ware, guarantee that the gas component of combustor output is the same with real engine exhaust's gas component, ensure that the tail gas of combustor output can accurately simulate engine exhaust's true condition, the simulation accuracy is high.
The utility model discloses a tail gas detector of combustor test bench, third solenoid valve are connected with the switch board electricity, and the switch board is according to the switching of the detection data control third solenoid valve of tail gas detector, and the detection data is different with the former row data of inputing on the switch board, and the third solenoid valve is in the off-state; and meanwhile, the third electromagnetic valve is opened, the bypass pipe is closed, and the tail gas is input into the post-processor through the third electromagnetic valve, so that the gas input into the post-processor is matched with the real engine tail gas, and the accuracy of tail gas simulation is ensured.
The utility model discloses a same fuel can be deposited in every fuel cavity of combustor test bench, also can deposit different fuels, like diesel oil, methyl alcohol, ethanol, biofuel etc. through exporting different fuels, can carry out the original row simulation to diesel engine, gasoline engine, natural gas engine or other new forms of energy engines, the range of application is wide.
Drawings
Fig. 1 is a schematic view of the burner test bench of the present invention.
Fig. 2 is a test flow chart of the test method of the present invention.
In the figure: 1. a control cabinet; 2. a fuel tank; 3. a first fuel chamber; 4. a second fuel chamber; 5. a third fuel chamber; 6. a fourth fuel chamber; 7. a first solenoid valve; 8. a first flow meter; 9. a mixing chamber; 10. a second solenoid valve; 11. a second flow meter; 12. an air inlet; 13. a burner; 14. an exhaust port; 15. an exhaust gas detector; 16. a bypass pipe; 17. a third electromagnetic valve; 18. a post-processor; 19. a DOC (oxidative catalyst) module; 20. a DPF (particulate filter) module; 21. a mixer module; 22. an SCR + ASC (ammonia slip catalyst) module; 23. a urea tank; 24. a DCU (urea injection control unit) module; 25. a urea pump; 26. a nozzle; 27. a nozzle holder; 28. and (4) urea solution.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the fuel tank 2 of the burner test bed of the present invention is electrically connected to the control cabinet 1, a plurality of fuel cavities are connected in parallel in the fuel tank 2, in this embodiment, a first fuel cavity 3, a second fuel cavity 4, a third fuel cavity 5, and a fourth fuel cavity 6 are provided, each fuel cavity can store the same fuel, and also can store different fuels, such as diesel, methanol, ethanol, bio-fuel, etc., and by outputting different fuels, the present invention can perform in-situ simulation for diesel engines, gasoline engines, natural gas engines, or other new energy engines, and has a wide application range; the four fuel cavities are respectively connected to a mixing cavity 9 through pipelines, a first electromagnetic valve 7 and a first flow meter 8 are sequentially arranged between each fuel cavity and the mixing cavity 9, each first electromagnetic valve 7 is electrically connected with a control cabinet 1 (not shown in the figure), the control cabinet 1 can adjust the opening degree of the first electromagnetic valve 7 so as to control the fuel flow of each fuel cavity, and the first flow meter 8 is used for monitoring the fuel flow output by each fuel cavity; each fuel cavity can adjust different fuel proportions according to specific original row requirements, and output fuels are fully and uniformly mixed in the mixing cavity 9. The mixing cavity 9 is connected to a combustor 13 through a pipeline, a second electromagnetic valve 10 and a second flow meter 11 are arranged between the mixing cavity 9 and the combustor 13, the second electromagnetic valve 10 is electrically connected with the control cabinet 1 (not shown in the figure), the control cabinet 1 can adjust the opening degree of the first electromagnetic valve 7 so as to control the output fuel flow of the mixing cavity 9, and the second flow meter 11 is used for monitoring the output fuel flow of the mixing cavity 9; the combustor 13 is electrically connected with the control cabinet 1, and the control cabinet 1 can control the ignition of the combustor 13; the combustor 13 is provided with an air inlet 12 and an air outlet 14, the air inlet 12 is connected with an air supply system (not shown in the figure), the air supply system supplies air with certain air speed and air volume to the combustor 13 through the air inlet 12, the air inlet 12 is electrically connected with the control cabinet 1 (not shown in the figure), and the control cabinet 1 can control the opening degree of the air inlet 12 so as to control the air volume supplied by the air supply system; the exhaust port 14 is connected with the post-processor 18, a third electromagnetic valve 17 is arranged between the exhaust port 14 and the post-processor 18, and tail gas generated by the combustor 13 is input into the post-processor 18 through the exhaust port 14 for crystallization test; an exhaust gas detector 15 is disposed on the exhaust port 14 through a bypass pipe 16, and is used for detecting data such as exhaust temperature, exhaust flow, gas composition and the like of the output exhaust gas. The tail gas detector 15 and the third electromagnetic valve 17 are electrically connected with the control cabinet 1 (not shown in the figure), the control cabinet 1 controls the opening and closing of the third electromagnetic valve 17 according to the detection data of the tail gas detector 15, and when the detection data is different from the original row data input on the control cabinet 1, the third electromagnetic valve 17 is in a closed state; meanwhile, the third electromagnetic valve 17 is opened, the bypass pipe 16 is closed, and the tail gas is input into the post-processor 18 through the third electromagnetic valve 17, so that the gas input into the post-processor 18 is ensured to be matched with the real engine tail gas, and the accuracy of tail gas simulation is ensured. The aftertreatment device 18 is provided with a DOC module 19, a DPF module 20, a mixer module 21 and an SCR + ASC module 22 in sequence from front to back; the mixer module 21 is provided with a nozzle 26 extending through a nozzle holder 27, the nozzle 26 is connected to the urea tank 23 through a urea pump 25, the urea pump 25 is provided with a DCU module 24, the DCU module 24 is electrically connected with the control cabinet 1 (not shown in the figure), and the DCU module 24 calibrates the urea injection amount according to the original discharge data input on the control cabinet 1.
When the burner test bed of the utility model is used for the steady-state crystallization test of the mixer, the original row data is input into the control cabinet 1, the control cabinet 1 opens and adjusts the opening degree of each first electromagnetic valve 7 and second electromagnetic valve 10 according to the original row data, and opens and adjusts the air inlet 12 of the burner 13, each fuel cavity inputs the fuel into the mixing cavity 9 according to the respective fuel proportion, the fuel is mixed in the mixing cavity 9 and then input into the burner 13, and the air supply system sends the air into the burner 13 through the air inlet 12; the control cabinet 1 controls the combustor 13 to ignite, and the input fuel and air are combusted in the combustor 13 to generate tail gas; the exhaust gas detector 15 detects data such as exhaust temperature, exhaust flow, gas composition and the like at the exhaust port 14 and feeds the detected data back to the control cabinet 1, the control cabinet 1 compares the received detected data with input original exhaust data, when the received detected data and the input original exhaust data are the same, the bypass pipe 16 is closed, the third electromagnetic valve 17 is opened, the exhaust gas is input into the post-processor 18 and sequentially passes through each module of the post-processor 18, the urea tank 23 sprays urea liquid 28 into the mixer module 21 through the urea pump 25 and the nozzle 26, the urea liquid 28 and the exhaust gas are uniformly mixed in the mixer module 21 and then enter the SCR + ASC module, and the reaction is carried out in the SCR + ASC module. The utility model discloses a combustor test bench adjusts the fuel ratio in each fuel chamber according to former row data, the fuel in each fuel chamber is burnt in 13 combustors after fully the homogeneous mixing in mixing chamber 9, the tail gas that produces after the burning directly inputs in the aftertreatment ware 18, the tail gas that is the production after the burning in the input aftertreatment ware 18, guarantee that the gas component of combustor 13 output is the same with real engine exhaust's gas component, ensure that the tail gas of combustor 13 output can accurately simulate engine exhaust's true condition, the simulation accuracy is high.
As shown in FIG. 2, adopt the utility model discloses a combustor test bench can carry out the mixer steady state crystallization test based on the combustor to aftertreatment ware 18, and this test method is that whether there is the crystallization risk in aftertreatment ware 18 in the earlier stage of aftertreatment ware 18 development, specifically includes the following step:
step S1: collecting engine data;
step S2: selecting a working condition point;
step S3: the combustor simulates the working condition of the engine;
step S4: calibrating the urea injection amount;
step S5: performing a steady-state crystallization test on the post-treatment system;
step S6: and (6) judging the test result.
After the test is carried out according to the steps, the obtained test result is compared with a set value: (1) if the test result is less than the set value, the test is successful, namely the post-processor 18 meets the requirement, and the risk of crystallization does not exist; (2) if the test result is greater than the set value, the test fails, the post-processor 18 has a risk of crystallization, the post-processor 18 needs to be optimally designed, and the optimized product is re-verified according to the steps S5 and S6.
In step S1, it is first necessary to collect data related to the engine, mainly collecting data information such as exhaust temperature, exhaust flow rate, gas composition, etc. when the engine operates at its rated operating point and thirteen operating points of WHSC (steady state cycle), and these data are raw exhaust data. The raw data can be collected from the same series of engines adapted to the post-processor 18 to be tested, either in models already in batch use or prototypes produced according to the latest schemes. For an engine which is in a development stage, only a design scheme is determined, and a prototype is not produced yet, performance parameters calculated according to design characteristics of the engine can be used as original rank data.
The utility model discloses a former row of data both can follow existing engine and acquire, also can follow the engine development scheme of having confirmed the design, not having the model machine yet and acquire, can verify the aassessment to existing engine, also can verify the aassessment to the engine scheme that is in the development stage, enlarged the range of application. For the engine scheme in the development stage, according to the feedback of the test result, optimized test basis and improvement direction can be provided, the development period of the engine is shortened, and the development cost is reduced.
Step S2, selecting raw row data of a plurality of operating points based on the raw row data of the rated operating point and the thirteen operating points of the WHSC collected in step S1, in this embodiment, selecting a plurality of operating points with lower exhaust temperature, lower exhaust flow rate and larger injection amount among the rated operating points of the engine and the thirteen operating points of the WHSC, and when the post-processor 18 operates at these operating points, there is a greater crystallization risk, so selecting the raw row data of these operating points for testing can more accurately reflect the crystallization condition of the post-processor 18.
Step S3, with the former row data of a plurality of operating mode point of selecting in step S2, input the utility model discloses an among the combustor test bench, the combustor test bench is according to the former row data of each operating mode point of step S2 input, adjusts the wind speed, the amount of wind and the fuel ratio of input, simulates the exhaust emission condition of engine, guarantees exhaust temperature, the exhaust flow, the gas composition class of every operating mode point output after the burning and the former row data phase-match of the engine of collecting.
The utility model discloses a crystallization test method adopts combustor test bench as the source of tail gas output, is the test based on the combustor platform goes on, and for the engine bench, its structure, platform are built, the operation is simpler, and the time that the platform installation dismantlement needs to be spent is shorter, and the cost of labor is lower. The time for heating the combustor before the test and the cooling time after the test are shorter, so that the time length of the whole test process is shortened. The combustor test bed is adopted to simulate the exhaust emission condition of the engine, and for the six-stage engine, even if an engine model machine cannot be obtained, performance parameters obtained through calculation according to the design characteristics of the engine model machine can be input into the combustor as original exhaust data to be simulated, and exhaust output matched with the original exhaust data of the engine is obtained.
And S4, selecting a proper ammonia-nitrogen ratio according to the original row data of the working condition point selected in the step S2 and the emission target of the post-processor 18, wherein the ammonia-nitrogen ratio is generally 1.0-1.2, calibrating the urea injection amount of the DCU module 24, collecting the urea solution by using a measuring cup in the calibration process, weighing according to the set injection amount, and ensuring that the deviation is less than 2%.
Step S5, performing a steady-state crystallization test of the post-treatment system, which mainly comprises the following steps:
b1: the operation cleaning condition of the post processor 18 is preprocessed, so that the post processor 18 is ensured to be clean, and the influence on the accuracy of the subsequent test result caused by impurities left on the post processor 18 is avoided. After the cleaning condition operation is finished, the post-processor 18 is weighed, and data W is recorded0；
B2: operating the burner test bench, determining data such as exhaust temperature, exhaust flow and other components output by the burner test bench according to the input original discharge data of the working condition points, and performing the next step after the exhaust temperature output by the burner is stable;
b3: the DCU module 24 is started to perform urea injection according to the urea injection amount calibrated in the step S4;
b4, based on the plurality of working condition points selected in the step S2, firstly operating a steady state cycle for 2 hours at each working condition point, after the cycle is finished, photographing and weighing the post-processor 18, and recording data Wn-1(ii) a After photographing and weighing, operating a cleaning working condition, after the cleaning working condition is finished, operating a steady-state cycle for 8 hours, after the cycle is finished, photographing and weighing the post-processor 18, and recording data Wn-2；
B5: recording data W in B4n-1、Wn-2Respectively subtractData W recorded in B10Calculating the added weight Dn-1、Dn-2。
Step S6, determining the test result, the determination request being: 1) d, Dn-1If the weight is more than 5g, the product is unqualified; 2) d, Dn-1＜5g、Dn-2If the weight is more than 30g, the product is unqualified; 3) d, Dn-1＜5g、Dn-2If the weight is less than 30g, the test is qualified and the test is finished.
Through the judgment of the test result, the crystallization risk of the post-processor 18 can be evaluated, if the test result is qualified, the post-processor 18 does not have the crystallization risk, and the product development scheme of the post-processor 18 meets the requirement; if the test result is not qualified, it indicates that the post-processor 18 has a high risk of crystallization, and the post-processing product development scheme needs to be optimized and designed, and after further optimization and improvement, the verification is performed according to step S5.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention. For example, the burner test rig may be provided without the mixing chamber 9, and several fuel chambers in the fuel tank 2 may be directly connected to the burner 13, each of which feeds fuel into the burner 13 to be mixed.
Claims (5)
1. The utility model provides a combustor test bench, includes switch board (1), fuel tank (2), combustor (13) of being connected with switch board (1), its characterized in that: a plurality of fuel cavities are arranged in the fuel tank (2), each fuel cavity is respectively connected with a combustor (13), and an air inlet (12) and an air outlet (14) are arranged on the combustor (13); during testing, the air inlet (12) is connected with an air supply system, and the air outlet (14) is connected with the post-processor (18).
2. The burner test rig of claim 1, wherein: a mixing cavity (9) is arranged between the fuel tank (2) and the combustor (13), each fuel cavity of the fuel tank (2) is respectively connected with the mixing cavity (9), and a first electromagnetic valve (7) and a first flow meter (8) are arranged between each fuel cavity and the mixing cavity (9); a second electromagnetic valve (10) and a second flowmeter (11) are arranged between the mixing cavity (9) and the combustor (13); each first electromagnetic valve (7) and each second electromagnetic valve (10) are respectively connected with the control cabinet (1), and the control cabinet (1) can adjust the opening degrees of the first electromagnetic valves (7) and the second electromagnetic valves (10).
3. The burner test rig of claim 1, wherein: the exhaust port (14) is connected with a tail gas detector (15) and a third electromagnetic valve (17), the tail gas detector (15) and the third electromagnetic valve (17) are connected with the control cabinet (1), and the control cabinet (1) controls the third electromagnetic valve (17) to be opened and closed according to detection data of the tail gas detector (15).
4. The burner test rig of claim 1, wherein: the same fuel or different fuels are stored in the plurality of fuel cavities.
5. The burner test rig of claim 1, wherein: the aftertreatment device (18) is provided with a DOC module (19), a DPF module (20), a mixer module (21) and an SCR + ASC module (22); be provided with nozzle (26) on blender module (21), on nozzle (26) were connected to urea jar (23) through urea pump (25), be provided with DCU module (24) on urea pump (25), DCU module (24) are connected with switch board (1) electricity.
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| CN201921637474.1U CN210269174U (en) | 2019-09-29 | 2019-09-29 | Combustor test bench |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530642A (en) * | 2019-09-29 | 2019-12-03 | 无锡亿利环保科技有限公司 | A kind of burner test-bed and the mixer stable state crystallization trial method based on burner |
| CN113864031A (en) * | 2021-10-28 | 2021-12-31 | 威海海洋职业学院 | Vehicle tail gas simulation generating device |
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2019
- 2019-09-29 CN CN201921637474.1U patent/CN210269174U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110530642A (en) * | 2019-09-29 | 2019-12-03 | 无锡亿利环保科技有限公司 | A kind of burner test-bed and the mixer stable state crystallization trial method based on burner |
| CN113864031A (en) * | 2021-10-28 | 2021-12-31 | 威海海洋职业学院 | Vehicle tail gas simulation generating device |
| CN113864031B (en) * | 2021-10-28 | 2023-03-14 | 威海海洋职业学院 | Vehicle tail gas simulation generating device |
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