CN202903325U - System for measuring booster noise - Google Patents
System for measuring booster noise Download PDFInfo
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- CN202903325U CN202903325U CN 201220595911 CN201220595911U CN202903325U CN 202903325 U CN202903325 U CN 202903325U CN 201220595911 CN201220595911 CN 201220595911 CN 201220595911 U CN201220595911 U CN 201220595911U CN 202903325 U CN202903325 U CN 202903325U
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- simulation device
- semianechoic room
- noise factor
- noise
- measurement
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Abstract
The utility model provides a system for measuring booster noise. The system comprises a turbine air inlet simulation device, a semi-anechoic room, a booster, a frequency spectrum generator, a controller and a display device, wherein the booster is communicated with an air outlet of the turbine air inlet simulation device and is placed in the semi-anechoic room; the frequency spectrum generator is internally installed in the semi-anechoic room; the controller is used for controlling the turbine air inlet simulation device; and the display device is used for displaying air inlet parameters of the turbine air inlet simulation device and indoor sound decibels of the semi-anechoic room. According to the system for measuring the booster noise, the turbine air inlet simulation device can set the air inlet parameters close to the turbine through the simulation of the turbine air inlet, so that the measurement is accurate; and the semi-anechoic room can eliminate external acoustic disturbance and indoors reflected noise wave disturbance, and the noise spectrum measured by the frequency spectrum generator is used as the acoustic spectrum of the booster, namely, the acoustic spectrum of the booster can be independently measured, and the basis is provided for reducing the noise of the booster.
Description
Technical field
The utility model relates to the measurement mechanism field, especially, relates to a kind of measurement supercharger noise factor.
Background technology
The exhaust-driven turbo-charger exhaust-gas turbo charger volume is little, complex geometry, and turbine has certain effect to alleviating engine exhaust noise.But the supercharger flow is large, and gas velocity is fast, produces high frequency birdie during its work; Under certain exciting factor is brought out, also can produce some abnormal sounds in addition.Especially concerning supercharging gasoline engine, the gasoline engine Comparision is soft, and it is more outstanding that the noise of supercharger seems.Increasing to the car contradiction that supercharging gasoline engine is housed.Therefore, reduce the supercharger noise and seem even more important.
Measure the supercharger noise and there is no at present special test unit, generally on block testing stand, test with engine, can't carry out to the noise of supercharger independence and measure and analyze.
The utility model content
The utility model purpose is to provide a kind of measurement supercharger noise factor, can't carry out to the noise of supercharger the independent technical matters of measuring and analyzing to solve prior art.
For achieving the above object, according to an aspect of the present utility model, a kind of measurement supercharger noise factor is provided, has comprised: turbine intake simulation device, semianechoic room, display device that communicate with the gas outlet of turbine intake simulation device and that place sound decibel in the supercharger in the semianechoic room, the control device that is built in the interior frequency spectrum generator of semianechoic room, control turbine intake simulation device, the inlet condition that reaches demonstration turbine intake simulation device and the semianechoic room.
Further, turbine intake simulation device comprise draft tube, and be installed in turn voltage stabilizer on the draft tube, flowrate control valve, to the intensification chamber of gas-heated.
Further, flowrate control valve comprises the flow rate fine-tuning valve that is connected to the flow control valve that is used for coarse adjustment on the draft tube and is used for accurate adjustment, and flow control valve and flow rate fine-tuning valve are connected in parallel.
Further, electrical heating or firing chamber heating can be adopted in the intensification chamber.
Further, also be provided with fairing and flowmeter between the flowrate control valve on the draft tube and the intensification chamber.
Further, the enclosure space of semianechoic room for being made by sound insulating material, the inwall of semianechoic room is equipped with sharp wall noise elimination piece.
Further, measure the supercharger noise factor and also comprise the semianechoic room air exchange system.
Further, the semianechoic room air exchange system comprises the admission line that passes into constant temperature gas that passes in the semianechoic room and the outlet pipe that the waste gas of semianechoic room is discharged.
Further, the inlet condition of turbine intake simulation device comprises pressure, temperature and the flow of gas.
The utlity model has following beneficial effect:
1, the turbine intake simulation device of measurement supercharger noise factor of the present utility model is by the air inlet of simulation turbine, the inlet condition close with turbine is set, be flow, pressure and the temperature of gas, remove again to measure the noise of supercharger, so that measurement is more accurate, the variation range of the inlet condition of its setting is large, can record the noise spectrum of supercharger under the various inlet parameter;
2, semianechoic room can be got rid of the interference of extraneous sound interference indoor reflection noise waves, so that the noise spectrum that frequency spectrum generator is measured is the sound spectrum of supercharger, can measure independently the sound spectrum of supercharger, for the noise that reduces supercharger provides foundation.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the measurement supercharger noise of the utility model preferred embodiment.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, preferred embodiment of the present utility model provides a kind of measurement supercharger noise factor, comprise turbine intake simulation device 10, semianechoic room 20, communicate with the gas outlet of turbine intake simulation device 10 and place supercharger 21 in the semianechoic room 20, be built in frequency spectrum generator 22 in the semianechoic room 20, the control device 30 of control turbine intake simulation device 10, and show the inlet condition of turbine intake simulation device 10 and the display device (accompanying drawing is not shown) of semianechoic room 20 interior sound decibels.Measurement supercharger noise factor of the present utility model places supercharger 21 in the semianechoic room 20 by the air inlet of simulation turbine, eliminates extraneous interference, will measure independently and analyze the noise of supercharger 21.
Turbine intake simulation device 10 comprise draft tube 11, and be installed in turn voltage stabilizer 12 on the draft tube 11, flowrate control valve 13, to the intensification chamber 14 of gas-heated.In the present embodiment, the compressed air pressure of draft tube 11 inflow points is controlled at 0.5MPa-0.7Mpa.Voltage stabilizer 12 prevents pressure surge, and voltage stabilizer 12 remains on the top hole pressure of draft tube 11 about 0.4MP, and the top hole pressure of draft tube 11 will be higher than the intake pressure of supercharger 21.Flowrate control valve 13 is used for the uninterrupted of control draft tube 11 air-flows; Preferably, flowrate control valve 13 comprises the flow rate fine-tuning valve 132 that is connected to the flow control valve 131 that is used for coarse adjustment on the draft tube 11 and is used for accurate adjustment, and flow control valve 131 and flow rate fine-tuning valve 132 are connected in parallel, to realize the accurate adjusting to gas flow.Electrical heating or firing chamber heating can be adopted in intensification chamber 14.Usually, adopt electrically heated intensification chamber 14, it takes up an area large, and is expensive many, but the steady air current of its formation, the temperature field is more even; The firing chamber heating, so that intensification chamber 14 quick heatings, increasing extent of temperature is large, and its running cost is few, but the temperature field is even not behind the firing chamber, damages easily turbine.Therefore, the heating means of intensification chamber 14 employings can freely be selected as the case may be.Preferably, also be provided with fairing 15 and flowmeter 16 between the flowrate control valve 13 on the draft tube 11 and the intensification chamber 14, to improve flow measurement precision of the present utility model.Usually, turbine intake simulation device 10 controllable flow range are 0 ~ 0.5kg/S, and temperature range is 20 ~ 700 ℃, and pressure limit is 0.15 ~ 0.4MPa.
The enclosure space of semianechoic room 20 for being made by sound insulating material is with isolated extraneous noise; The inwall of semianechoic room 20 is equipped with sharp wall noise elimination piece, with the noise waves of decontamination chamber internal reflection.In the present embodiment, semianechoic room 20 is the enclosure space of long 6m, wide 6m, high 5m.In semianechoic room 20, be provided with the supercharger 21 that communicates with the gas outlet of turbine intake simulation device 10; In order to measure the sound frequency of supercharger 21, frequency spectrum generator 22 is set also in semianechoic room 20.Starting supercharger 21, turbine intake simulation device 10 enters gas, and supercharger 21 startings are sounded.Frequency spectrum generator 22 is measured the noise spectrum in the semianechoic room 20, then sending one by one benchmark shakes frequently, find out the frequency spectrum of the noise spectrum measured and benchmark frequency spectrum resonance, analyze from the frequency spectrum of this resonance and fall low noise main frequency, for the noise that reduces supercharger 21 provides foundation.Acoustic meter also is set in semianechoic room 20, to measure sound decibel in the semianechoic room 20 in order to prevent composition of air and the temperature imbalance in the semianechoic room 20, is provided with the semianechoic room air exchange system at semianechoic room 20.The semianechoic room air exchange system comprises the admission line that passes into constant temperature gas 41 that passes in the semianechoic room 20 and the outlet pipe 42 that the waste gas of semianechoic room 20 is discharged.Usually, the composition of air of semianechoic room 20 and temperature imbalance affect the noise frequency of supercharger 21 than very fast for fear of it, and semianechoic room 20 air exchange system each minute ventilations once.
Measurement supercharger noise factor of the present utility model also comprises the control device 30 of control turbine intake simulation device 10, usually, control device 30 can be installed with above-mentioned turbine intake simulation device 10 and semianechoic room 20 compartments, regulate the inlet condition of turbine intake simulation device 10 and the needed thermal parameter of whole system when measuring, the temperature of the chamber 14 of namely heating up.The inlet condition of turbine intake simulation device 10 comprises pressure, temperature and the flow of gas.
Measurement supercharger noise factor of the present utility model also comprises the inlet condition of demonstration turbine intake simulation device 10 and the display device of semianechoic room 20 interior sound decibels.Frequency spectrum generator 22 in the semianechoic room 20 also shows data measured by display device.Temperature, pressure, flow, frequency spectrum generator, acoustic meter measuring accuracy all should be less than or equal to 0.5%, to guarantee the accuracy of measured frequency spectrum.
To sum up, measurement supercharger noise factor of the present utility model has following beneficial effect:
The turbine intake simulation device of measurement supercharger noise factor of the present utility model is by the air inlet of simulation turbine, the inlet condition close with turbine is set, be flow, pressure and the temperature of gas, remove again to measure the noise of supercharger, so that measurement is more accurate, the variation range of the inlet condition of its setting is large, can record the noise spectrum of supercharger under the various inlet parameter; Semianechoic room can be got rid of extraneous sound interference and the interference of indoor reflection noise waves, so that the noise spectrum that frequency spectrum generator is measured is the sound spectrum of supercharger, can measure independently the sound spectrum of supercharger, for the noise that reduces supercharger provides foundation.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. measurement supercharger noise factor, it is characterized in that, comprising: turbine intake simulation device, semianechoic room, display device that communicate with the gas outlet of described turbine intake simulation device and that place sound decibel in the supercharger in the described semianechoic room, the control device that is built in the interior frequency spectrum generator of described semianechoic room, the described turbine intake simulation device of control, the inlet condition that reaches the described turbine intake simulation device of demonstration and the described semianechoic room.
2. measurement supercharger noise factor according to claim 1 is characterized in that, described turbine intake simulation device comprise draft tube, and be installed in turn voltage stabilizer on the described draft tube, flowrate control valve, to the intensification chamber of gas-heated.
3. measurement supercharger noise factor according to claim 2, it is characterized in that, described flowrate control valve comprises the flow rate fine-tuning valve that is connected to the flow control valve that is used for coarse adjustment on the described draft tube and is used for accurate adjustment, and described flow control valve and described flow rate fine-tuning valve are connected in parallel.
4. measurement supercharger noise factor according to claim 2 is characterized in that, electrical heating or firing chamber heating can be adopted in described intensification chamber.
5. measurement supercharger noise factor according to claim 4 is characterized in that, also is provided with fairing and flowmeter between the described flowrate control valve on the described draft tube and the described intensification chamber.
6. measurement supercharger noise factor according to claim 1 is characterized in that, the enclosure space of described semianechoic room for being made by sound insulating material, and the inwall of described semianechoic room is equipped with sharp wall noise elimination piece.
7. measurement supercharger noise factor according to claim 1 is characterized in that, described measurement supercharger noise factor also comprises the semianechoic room air exchange system.
8. measurement supercharger noise factor according to claim 7 is characterized in that, described semianechoic room air exchange system comprises the admission line that passes into constant temperature gas that passes in the described semianechoic room and the outlet pipe that the waste gas of described semianechoic room is discharged.
9. measurement supercharger noise factor according to claim 1 is characterized in that, the inlet condition of described turbine intake simulation device comprises pressure, temperature and the flow of gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595911 CN202903325U (en) | 2012-11-13 | 2012-11-13 | System for measuring booster noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595911 CN202903325U (en) | 2012-11-13 | 2012-11-13 | System for measuring booster noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903325U true CN202903325U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220595911 Withdrawn - After Issue CN202903325U (en) | 2012-11-13 | 2012-11-13 | System for measuring booster noise |
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| Country | Link |
|---|---|
| CN (1) | CN202903325U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937478A (en) * | 2012-11-13 | 2013-02-20 | 奥凯嘉集团有限公司 | System for measuring booster noise |
| CN105181352A (en) * | 2015-09-23 | 2015-12-23 | 华晨汽车集团控股有限公司 | Device for testing pressure relief noise of air inlet pressure relief valve of turbocharger |
-
2012
- 2012-11-13 CN CN 201220595911 patent/CN202903325U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937478A (en) * | 2012-11-13 | 2013-02-20 | 奥凯嘉集团有限公司 | System for measuring booster noise |
| CN105181352A (en) * | 2015-09-23 | 2015-12-23 | 华晨汽车集团控股有限公司 | Device for testing pressure relief noise of air inlet pressure relief valve of turbocharger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130424 Effective date of abandoning: 20140618 |
|
| RGAV | Abandon patent right to avoid regrant |