CN212300708U - Flow stabilizer - Google Patents
Flow stabilizer Download PDFInfo
- Publication number
- CN212300708U CN212300708U CN202021528201.6U CN202021528201U CN212300708U CN 212300708 U CN212300708 U CN 212300708U CN 202021528201 U CN202021528201 U CN 202021528201U CN 212300708 U CN212300708 U CN 212300708U
- Authority
- CN
- China
- Prior art keywords
- flow
- air
- cavity
- test
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model discloses a flow stabilizer, wherein one end of a cylinder body is provided with an air inlet, the other end of the cylinder body is provided with an air outlet, a guide plate and a pore plate are arranged in the cylinder body, an expansion cavity, a mixing cavity and a contraction cavity are sequentially formed, the expansion cavity is communicated with the air inlet, and the contraction cavity is communicated with the air outlet; the guide plate is provided with a plurality of blade holes, and blades with openings are arranged on the blade holes; the pore plate is provided with a plurality of through holes. The utility model discloses a current stabilizer is used for adjusting the turbulent air current, provides steady air current, ensures the accuracy of aftertreatment ware test for the aftertreatment ware.
Description
Technical Field
The utility model belongs to the technical field of vehicle aftertreatment ware backpressure test technique and specifically relates to a be applied to current stabilizer of cold flow backpressure test rack.
Background
The vehicle postprocessor is used as a key part of the engine and arranged in an exhaust system of the engine to convert harmful substances in tail gas into N harmless to the environment2、CO2And H2O, etc. to reduce the emission of harmful gas and reduce environmental pollution.
The back pressure of the post-processor is a key index influencing the performance of the post-processor, the back pressure of the post-processor is positively correlated with the power loss of the engine, and the power loss of the engine is directly influenced, so that the post-processor which leaves a factory needs to meet the requirement of a rated back pressure value. At present, a host factory or a part supplier generally adopts an engine bench mode to measure the back pressure of a post-processor, the post-processor is arranged at the exhaust end of an engine, and the back pressure parameter of the post-processor under the corresponding condition is tested by adjusting the operation condition of the engine; because engine pedestal equipment is more expensive, the pedestal of engine is built and is needed to spend longer time, therefore cost of labor, test cost are higher, and the test mode of engine pedestal is complicated moreover, and test duration is longer.
At present, the cold flow backpressure test bench is adopted to carry out backpressure test on the postprocessor, but the existing cold flow backpressure test bench has the following problems: a pressure stabilizing device is not usually arranged on a test pipeline of the existing cold flow backpressure test bench, test data generates large fluctuation due to airflow disorder, and the stability of the test data is poor.
SUMMERY OF THE UTILITY MODEL
The applicant provides a current stabilizer with a reasonable structure aiming at the defects of poor stability and the like of the test data of the existing cold flow backpressure bench, and the stability of the test data is improved.
The utility model discloses the technical scheme who adopts as follows:
a flow stabilizer, one end of a cylinder is provided with an air inlet, the other end of the cylinder is provided with an air outlet, a guide plate and a pore plate are arranged in the cylinder, an expansion cavity, a mixing cavity and a contraction cavity are sequentially formed, the expansion cavity is communicated with the air inlet, and the contraction cavity is communicated with the air outlet; the guide plate is provided with a plurality of blade holes, and blades with openings are arranged on the blade holes; the pore plate is provided with a plurality of through holes.
As a further improvement of the above technical solution:
the vanes open to the mixing chamber.
The opening direction of the blades in each quarter area on the guide plate is centrosymmetric.
The two end parts of the cylinder body are cone cylinder parts, the middle part of the cylinder body is a cylinder part, the air inlet is arranged on the cone cylinder part at one end, and the air outlet is arranged on the cone cylinder part at the other end.
The guide plate is arranged at one end of the cylindrical part, which is positioned at the air inlet, and an expansion cavity is formed at the front side of the guide plate; the orifice plate is provided at one end of the cylindrical portion at the air outlet, and a contraction chamber is formed at the rear side of the orifice plate.
The plurality of blade holes of the guide plate are arranged in an array.
The utility model has the advantages as follows:
the utility model discloses a current stabilizer is used for adjusting the turbulent air current, provides steady air current, ensures the accuracy of aftertreatment ware test for the aftertreatment ware.
Drawings
Fig. 1 is a schematic structural diagram of a test bench according to the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a perspective view of a baffle.
Fig. 4 is a perspective view of an orifice plate.
In the figure: 1. a control cabinet; 2. a cold flow fan; 3. a post-processor; 4. a hygrometer; 5. an ambient temperature sensor; 6. a first flow meter; 7. a pressure relief valve; 8. a first throttle valve; 9. a second throttle valve; 10. a flow stabilizer; 101. an air inlet; 102. an air outlet; 103. a baffle; 1031. a blade hole; 1032. a blade; 104. an orifice plate; 1041. a through hole; 105. an expansion lumen; 106. a mixing chamber; 107. a contracting cavity; 11. a second flow meter; 12. a first pressure sensor; 13. a first temperature sensor; 14. a weighing device; 15. a range finder; 16. a second temperature sensor; 17. a second pressure sensor; 18. an air inlet and an air outlet; 19. a main pipeline; 20. a branch pipe;
30. a test station;
100. and a test chamber.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, adopt the utility model discloses a cold flow backpressure test rack is provided with two at least test channel, set up a test platform position 30 on every test channel, a post processor 3 for connect the examination of awaiting measuring, after post processor 3 placed test platform position 30 on, be connected to on trunk line 19 through reposition of redundant personnel branch pipe 20, trunk line 19 is connected with cold flow fan 2, cold flow fan 2 passes through the circuit and is connected with switch board 1, switch board 1 is through opening and close of the information control cold flow fan 2 of receiving, through trunk line 19, reposition of redundant personnel branch pipe 20 provides cold air current for post processor 3 on each test channel, carry out the cold flow backpressure test to post processor 3. The utility model discloses a plurality of test channels can carry out the backpressure test to a plurality of aftertreatment ware 3, can save test time, improve efficiency of software testing.
As shown in fig. 1, the main pipe 19 is sequentially provided with a first flowmeter 6, a pressure relief valve 7 and a first throttle valve 8; the first flowmeter 6 is used for detecting the air flow of the main pipeline 19, monitoring the air flow condition of the main pipeline 19 and timely knowing whether the main pipeline 19 and each branch shunting pipe 20 have abnormal air flow; the pressure release valve 7 is used for discharging gas when the pressure in the pipeline is too high, so that the danger caused by the too high pressure of gas flow in the pipeline is avoided; the first throttle 8 is used for controlling the on-off of the main pipeline 19. A second throttle valve 9, a flow stabilizer 10, a second flowmeter 11, a first pressure sensor 12 and a first temperature sensor 13 are sequentially arranged on one side of the air inlet end of the postprocessor 3 on each branch pipe 20, and a second temperature sensor 16 and a second pressure sensor 17 are sequentially arranged on one side of the air outlet end of the postprocessor 3; the second throttle valve 9 is used for controlling the on-off of the branch pipe 20; the flow stabilizer 10 is used for adjusting the disordered airflow, providing stable airflow for the post-processor 3 and ensuring the accuracy of the test of the post-processor 3; the second flowmeter 11 is configured to detect an air flow rate of the branch pipes 20, monitor an air flow condition of each branch pipe 20, and timely know whether the monitored air flow of the branch pipe 20 is abnormal; the first pressure sensor 12 and the second pressure sensor 17 are used for detecting pressure values of an air inlet end and an air outlet end of the post-processor 3, and back pressure data of the post-processor 3 is obtained through comparison of the pressure values of the air inlet end and the air outlet end; the first temperature sensor 13 and the second temperature sensor 16 are used for detecting the airflow temperature values of the air inlet end and the air outlet end of the post-processor 3, monitoring the temperature condition of the airflow passing through the post-processor 3, timely knowing whether the airflow temperature is abnormal or not and avoiding collecting inaccurate backpressure data. In other embodiments, a check valve may be further disposed on each branch flow path 20 between the second throttling valve 9 and the flow stabilizer 10 to prevent the turbulent airflow generated when the second throttling valve 9 is opened and closed from flowing back to cause an excessive local pressure inside the pipeline, so as to form a double safety with the pressure relief valve 7 to avoid a danger caused by an excessive pressure of the airflow in the pipeline.
The test bench 30 of each branch pipe 20 is also provided with a weighing device 14 and a distance meter 15, the weighing device 14 and the distance meter 15 are connected to the control cabinet 1 through lines, and the weighing device 14 is used for weighing the post-processor 3 to be tested and feeding corresponding weight information back to the control cabinet 1; the distance measuring instrument 15 is used for measuring the length size of the post-processor 3 to be tested and feeding back corresponding length information to the control cabinet 1; the control cabinet 1 automatically identifies the type of the post-processor 3 according to the received weight information and length information, automatically selects and derives a flow value matched with the post-processor 3 to be tested, a tester can test only by clicking, and does not need to manually input corresponding information on the control cabinet 1, so that the operation process is simplified, the problem that the wrong test result is obtained because of inputting wrong information by a worker is avoided, the influence of human factors is avoided, and the error risk is reduced.
As shown in fig. 1, the cold flow backpressure test bench of the present invention is disposed in a test chamber 100, a plurality of air inlets and air outlets 18 communicated with an air conditioner are disposed in the test chamber 100, and the air conditioner can adjust the ambient temperature and humidity in the test chamber 100 through the air inlets and air outlets 18; be provided with hygrometer 4, ambient temperature sensor 5 on the switch board 1, can survey humidity, the temperature in the test room 100 in real time, in time know the temperature, the humidity condition in the test room 100 to carry out corresponding regulation according to the demand. In the testing process, the temperature in the testing chamber 100 is controlled to be 25 +/-2 ℃, and the humidity is controlled to be 50-60%, so that the temperature and the humidity of the testing environment are kept within a certain value range in the testing process, the influence on the backpressure testing result caused by overlarge temperature and humidity changes is avoided, and the accuracy of backpressure testing data is ensured.
As shown in fig. 2, two end portions of the cylinder of the flow stabilizer 10 are cone cylinder portions, the middle portion is a cylinder portion, one end of the cone cylinder portion is provided with an air inlet 101, the other end of the cone cylinder portion is provided with an air outlet 102, one end of the cylinder portion, which is positioned at the air inlet 101, is fixedly provided with a flow guide plate 103, one end of the cylinder portion, which is positioned at the air outlet 102, is fixedly provided with a pore plate 104, an expansion cavity 105 is formed inside the flow stabilizer 10 and positioned at the front side of the flow guide plate 103, a mixing cavity 106 is formed between the flow guide plate 103 and the pore plate 104, a contraction cavity 107 is formed at the rear side of the pore plate 104. As shown in fig. 3, a plurality of blade holes 1031 arranged in an array are formed in the plate surface of the baffle plate 103, each blade hole 1031 is provided with a blade 1032, and as shown in fig. 2, the plurality of blades 1032 open toward the mixing chamber 106; as shown in fig. 3, the opening directions of the vanes 1032 in each quarter of the plate surface of the baffle plate 103 are arranged in a central symmetry. As shown in fig. 4, the plate surface of the orifice plate 104 is provided with a plurality of through holes 1041 in a staggered manner. Turbulent air flow enters the expansion cavity 105 of the flow stabilizer 10 from the air inlet 101, the flow rate of the turbulent air flow is reduced, then the turbulent air flow enters the mixing cavity 106 through the plurality of blade holes 1031 of the guide plate 103, the air flow rotates under the guide action of the plurality of blades 1032, the turbulent air flow is rotated and mixed in the mixing cavity 106, the air flow with uniform flow rate is obtained, the uniform air flow stably enters the contraction cavity 107 through the plurality of through holes 1041 of the pore plate 104, after the flow rate is increased in the contraction cavity 107, the turbulent air flow is output from the air outlet 102, and the stable air flow with the flow rate meeting the requirement is obtained.
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.
Claims (6)
1. A flow stabilizer, barrel one end has air inlet (101), and the other end has gas outlet (102), its characterized in that: a guide plate (103) and a pore plate (104) are arranged in the cylinder body, an expansion cavity (105), a mixing cavity (106) and a contraction cavity (107) are sequentially formed, the expansion cavity (105) is communicated with the air inlet (101), and the contraction cavity (107) is communicated with the air outlet (102); a plurality of blade holes (1031) are formed in the flow guide plate (103), and blades (1032) with openings are arranged on the blade holes (1031); the orifice plate (104) is provided with a plurality of through holes (1041).
2. A flow stabilizer according to claim 1, wherein: the vanes (1032) open to the mixing chamber (106).
3. A flow stabilizer according to claim 1 or 2, characterized in that: the opening direction of the vanes (1032) in each quarter area of the guide plate (103) is in central symmetry.
4. A flow stabilizer according to claim 1, wherein: the two end parts of the cylinder are cone cylinder parts, the middle part of the cylinder is a cylinder part, the air inlet (101) is arranged on the cone cylinder part at one end, and the air outlet (102) is arranged on the cone cylinder part at the other end.
5. A flow stabilizer according to claim 1, wherein: the air deflector (103) is arranged at one end of the air inlet (101) in the cylindrical part, and an expansion cavity (105) is formed in the front side of the air deflector (103); the orifice plate (104) is provided at one end of the cylindrical portion located at the air outlet (102), and a contraction chamber (107) is formed on the rear side of the orifice plate (104).
6. A flow stabilizer according to claim 1, wherein: the plurality of blade holes (1031) of the flow guide plate (103) are arranged in an array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021528201.6U CN212300708U (en) | 2020-07-29 | 2020-07-29 | Flow stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021528201.6U CN212300708U (en) | 2020-07-29 | 2020-07-29 | Flow stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212300708U true CN212300708U (en) | 2021-01-05 |
Family
ID=73937301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021528201.6U Active CN212300708U (en) | 2020-07-29 | 2020-07-29 | Flow stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212300708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235450A (en) * | 2021-11-12 | 2022-03-25 | 东风马勒热系统有限公司 | Vehicle air conditioner air volume distribution measuring system and vehicle air conditioner air volume distribution measuring method |
-
2020
- 2020-07-29 CN CN202021528201.6U patent/CN212300708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235450A (en) * | 2021-11-12 | 2022-03-25 | 东风马勒热系统有限公司 | Vehicle air conditioner air volume distribution measuring system and vehicle air conditioner air volume distribution measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109506744B (en) | Air flow calibration method for venturi nozzle of aircraft engine complete machine test | |
| CN109708829A (en) | The HVAC leak supervision method and monitoring system judged by difference in flow | |
| CN111735635A (en) | Cold flow backpressure test bench and cold flow backpressure test method of post-processor | |
| CN106885694B (en) | Air valve performance testing device and air valve performance testing method | |
| CN212300708U (en) | Flow stabilizer | |
| CN110082086A (en) | The test platform and test method of hydrogen fuel cell air feed equipment | |
| CN110714909A (en) | Test system of air compressor of fuel cell | |
| CN200993614Y (en) | Air conditioner noise-aircurrent measurement laboratory | |
| CN109029943B (en) | Two-loop check valve test device | |
| CN212228385U (en) | Cold flow backpressure test bench | |
| CN202501910U (en) | Calibrating device for heavy caliber gas flow | |
| CN114151321A (en) | Hydrogen circulating pump test system for fuel cell engine and test method thereof | |
| KR101736504B1 (en) | Hydrogen control system for electric generator | |
| CN207663032U (en) | A kind of fuel cell diagnostic test platform | |
| CN109224854B (en) | Flue gas denitration grid method rotation sampling ammonia and nitrogen oxide combined monitoring device | |
| CN111157426A (en) | Performance test system of humidifier and deionization filter | |
| CN110736526A (en) | High-temperature gas flowmeter calibration device and method for liquid oxygen kerosene engine | |
| CN207181049U (en) | Pilot combustion channel for combustion gas turbine | |
| CN216349016U (en) | Flow calibrating device and flow calibrating system | |
| CN205175475U (en) | Gasometric determination system | |
| CN115371892A (en) | System and method for testing back pressure valve | |
| CN114759225A (en) | Testing system and testing method for water-gas separator of fuel cell | |
| CN204388980U (en) | Nozzle sets formula gas meter calibrating installation | |
| CN212180747U (en) | Gas divider | |
| CN110455507B (en) | Turbocharger acceleration test device and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |