CN110487394A - A kind of new energy water pump noise-measuring system and evaluation method - Google Patents
A kind of new energy water pump noise-measuring system and evaluation method Download PDFInfo
- Publication number
- CN110487394A CN110487394A CN201910868278.3A CN201910868278A CN110487394A CN 110487394 A CN110487394 A CN 110487394A CN 201910868278 A CN201910868278 A CN 201910868278A CN 110487394 A CN110487394 A CN 110487394A
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- water pump
- bracket
- noise
- new energy
- measuring system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000011156 evaluation Methods 0.000 title abstract description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 16
- 238000001228 spectrum Methods 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention relates to automobile technical fields, more particularly to a kind of new energy water pump noise-measuring system and evaluation method, including hemispherical bracket, the bracket includes two support rod, the bottom bars in a ring in semi arch, two support rods are arranged in a crossed manner in " ten " font, its top is connected, its bottom end makes outer wall be connected with the pedestal respectively, the middle part of the bracket is equipped with and is arranged in parallel with the bottom bar and coaxial connecting rod in a ring, is equipped with microphone on the four points of connection of the connecting rod outer wall and two support rods；The center of the bottom bar is equipped with the rack for fixing water pump.The present invention can simulate the state of vehicle pump working, effectively assess water pump near field noise level, have directive function to water pump NVH type selecting.
Description
Technical field
The present invention relates to automobile technical field more particularly to a kind of new energy water pump noise-measuring system and evaluation methods.
Background technique
With flourishing for China's new-energy automobile, the performance of new-energy automobile is constantly improved, and more and more disappears
The person of expense selects new-energy automobile, and in existing energy automobile, battery pack and motor are important component, and in battery pack and motor
In use process, main component of the water pump as its cooling system can be used.The noise of the water pump body of different water pump suppliers
It is different.
Based on the above considerations, the present invention devises a kind of new energy water pump noise-measuring system and evaluation method.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of new energy water pump noise-measuring system and comment
Valence method can simulate the mounting means of assessment vehicle, as much as possible guarantee that rack water pump meets the boundary requirement of vehicle, In
Under the premise of this, the noise level of water pump duty ratio corresponding under vehicle most bad working environments is tested, water pump choosing is supported by this method
Type.
In order to achieve the object of the present invention, the technical solution adopted by the present invention are as follows:
The invention discloses a kind of new energy water pump noise-measuring systems, and including hemispherical bracket, the bracket includes two
A support rod in semi arch, bottom bar in a ring, two support rods are arranged in a crossed manner in " ten " font, and top is connected,
Its bottom end makes outer wall be connected with the pedestal respectively, and the middle part of the bracket is equipped with to be arranged in parallel and coaxial with the bottom bar
Microphone is equipped on the four points of connection of connecting rod in a ring, the connecting rod outer wall and two support rods；It is described
The center of bottom bar is equipped with the rack for fixing water pump.
The rack includes pedestal, the water pump bracket for fixing water pump, and structure suit is solid in a ring for the water pump bracket
Due to the outside of the water pump, bottom is set there are two connecting pin, and the pedestal is equipped with for connecting with the connecting pin
Mounting hole.
The end of the connecting pin is equipped with rubber pad, and the longitudinal section of the rubber pad is in I-shaped structure, the connection
The end of foot is equipped with the through-hole passed through for rubber pad middle part connecting rod.
The side wall of the connecting pin is equipped with the groove being connected to the through-hole, and the groove is connected to the through-hole, institute
The width for stating groove is not more than the internal diameter of the through-hole.
A kind of new energy water pump noise testing method, which comprises the following steps:
S: four microphones are arranged on the four points of connection of bracket setting support, place and are used in the bottom centre of bracket
The rack of fixed water pump；
S2: the duty ratio for controlling water pump is 95%, and water pump tests the noise of water pump after operating 10 minutes stabilizations, records four wheats
The noise testing data of gram wind；
S3: the calculating of energy average weighted is carried out to the noise testing data of four microphones in S2 step, formula is as follows:
(1)
In formula (1), N is microphone measuring point number, ai(dB)For sound energy value (amplitude and phase comprising sound of some measuring point
Position), A(dB)For the average energy acquired
S4: the processing of crossover rate range is carried out to the frequency spectrum of S3 step calculated result, counts water pump rack noise as pump selection
Database.
The beneficial effects of the present invention are:
1. the present invention can simulate the state of vehicle pump working, water pump near field noise level is effectively assessed, to water pump NVH type selecting
With directive function.
2. the configuration of the present invention is simple can satisfy the Fast Installation and vibration and noise test of water pump.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of rack in the present invention；
Fig. 3 is the sectional view of rubber pad in the present invention；
Fig. 4 is the part-structure top view of connecting pin in the present invention；
Fig. 5 is noise testing spectrogram of the present invention；
Fig. 6 is noise energy average weighted result spectrogram of the present invention.
In figure, 1 bracket, 11 support rods, 12 bottom bars, 13 connecting rods, 2 microphones, 3 water pumps, 4 racks, 41 pedestals, 43 water pumps
Bracket, 44 connecting pins, 45 rubber pads, 46 connecting rods, 47 through-holes, 48 grooves.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples:
Referring to Fig. 1-6.
The invention discloses a kind of new energy water pump noise-measuring system and evaluation method, including hemispherical bracket 1,
The bracket 1 includes two support rod 11, the bottom bars 12 in a ring in semi arch, and two support rods 11 are in " ten " font
Arranged in a crossed manner, top is connected, and bottom end makes outer wall be connected with the pedestal 12 respectively, the middle part of the bracket 1 equipped with
The bottom bar 12 is arranged in parallel and coaxial connecting rod 13 in a ring, 13 outer wall of connecting rod and two support rods 11
Four points of connection on be equipped with microphone 2；The center of the bottom bar 12 is equipped with the rack 4 for fixing water pump 3, passes through support
The hemispherical bracket 1 that bar 11, bottom bar 12 and connecting rod 13 are built, and microphone 2 is set on four points of connection, the bottom of at
12 center of bar is used to fix the rack 4 of water pump 3, can simulate the state of vehicle pump working, effectively assesses water pump near field noise
Level has directive function to water pump NVH type selecting.
The rack 4 includes pedestal 41, the water pump bracket 43 for fixing water pump 3, and the water pump bracket 43 is tied in a ring
Structure, which is set with, is fixed on the outside of the water pump 3, and bottom is set there are two connecting pin 44, the pedestal 41 be equipped with for it is described
The mounting hole that connecting pin 44 connects is fixed on outside water pump 3 by the suit of water pump bracket 43, and the both ends of water pump bracket 43 are logical
It crosses and snaps connection, be easily installed and dismantle, while being connect by connecting pin 44 with the mounting hole on pedestal 41, water pump 3 can be fast
Speed installation.
The end of the connecting pin 44 is equipped with rubber pad 45, and the longitudinal section of the rubber pad 45 is in I-shaped structure, institute
The end for stating connecting pin 44 is equipped with the through-hole 47 passed through for the 45 middle part connecting rod 46 of rubber pad, by being arranged to I-shaped
The rubber pad 45 of type plays the role of second level vibration isolation.
The side wall of the connecting pin 44 is equipped with the groove 48 being connected to the through-hole 47, the groove 48 and the through-hole
47 connections, the width of the groove 48 are not more than the internal diameter of the through-hole 47,46 mistake of connecting rod on groove 48 and rubber pad 45
It is full of cooperation, engages later with through-hole 47, convenient for the installation of rubber pad 45, while is equipped with by the axle center of rubber pad 45 and being used for bolt
The through-hole passed through, bolt are connect after passing through through-hole with the mounting hole on rack 4.
A kind of new energy water pump noise testing method, which comprises the following steps:
S1: four microphones 2 are arranged on the four points of connection of bracket 1 setting support 1, place in the bottom centre of bracket 1
For fixing the rack 4 of water pump 3；
S2: the duty ratio of control water pump 3 is 95%, and water pump 3 tests the noise of water pump 3 after operating 10 minutes stabilizations, records four
The noise testing data of microphone 2, noise testing transmission of data are as shown in Figure 5；
S3: the calculating of energy average weighted is carried out to the noise testing data of four microphones 2 in S2 step, formula is as follows:
(1)
In formula (1), N is microphone measuring point number, ai(dB)For sound energy value (amplitude and phase comprising sound of some measuring point
Position), A(dB)For the average energy acquired
S4: to S3 step calculated result as shown in fig. 6, and carrying out the processing of crossover rate range, statistics water pump rack to the frequency spectrum of Fig. 6
Database of the noise as pump selection.Table 1 is the rack noise spectrum noise profile table of single water pump.
1 water pump engine bench test pectrum noise distribution table of table
| 1 rank | 0-500Hz | 500-2000Hz | 2000Hz or more | Overall noise | |
| Water pump 1 | 21.85 | 22.88 | 26.85 | 30.04 | 32.27 |
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to be said using the present invention
Equivalents made by bright book and accompanying drawing content are applied directly or indirectly in relevant technical field, are similarly included in this hair
In bright scope of patent protection.
Claims (5)
1. a kind of new energy water pump noise-measuring system, it is characterised in that: including hemispherical bracket (1), the bracket (1)
It is in support rod (11), the bottom bar (12) in a ring of semi arch including two, two support rods (11) are handed in " ten " font
Fork setting, top are connected, and bottom end makes outer wall be connected with the pedestal (12) respectively, and the middle part of the bracket (1) is equipped with
It is arranged in parallel with the bottom bar (12) and coaxial connecting rod (13) in a ring, described in connecting rod (13) outer wall and two
Microphone (2) are equipped on the four points of connection of support rod (11)；
The center of the bottom bar (12) is equipped with the rack (4) for fixing water pump (3).
2. a kind of new energy water pump noise-measuring system according to claim 1, it is characterised in that: rack (4) packet
Pedestal (41), the water pump bracket (43) for fixing water pump (3) are included, structure suit is fixed on the water pump bracket (43) in a ring
The outside of the water pump (3), bottom are set there are two connecting pin (44), the pedestal (41) be equipped with for the connecting pin
(44) mounting hole connected.
3. a kind of new energy water pump noise-measuring system according to claim 2, it is characterised in that: the connecting pin (44)
End be equipped with rubber pad (45), the longitudinal section of the rubber pad (45) is in I-shaped structure, the end of the connecting pin (44)
Portion is equipped with the through-hole (47) passed through for the rubber pad (45) middle part connecting rod (46).
4. a kind of new energy water pump noise-measuring system according to claim 3, it is characterised in that: the connecting pin (44)
Side wall be equipped with the groove (48) that is connected to the through-hole (47), the groove (48) is connected to the through-hole (47), described
The width of groove (48) is not more than the internal diameter of the through-hole (47).
5. a kind of new energy water pump noise testing method, which comprises the following steps:
S1: setting support (1) four microphones (2) is arranged on the four points of connection of bracket (1), in the bottom of bracket (1)
Place the rack (4) for fixing water pump (3) in center；
S2: the duty ratio of control water pump (3) is 95%, and water pump (3) tests the noise of water pump (3) after operating 10 minutes stabilizations, note
Record the noise testing data of four microphones (2)；
S3: the calculating of energy average weighted is carried out to the noise testing data of four microphones (2) in S2 step, formula is as follows:
(1)
In formula (1), N is microphone measuring point number, ai(dB)For the sound energy value of some measuring point, A(dB)Energy to acquire is averaged
Value；
S4: the processing of crossover rate range is carried out to the frequency spectrum of S3 step calculated result, counts water pump rack noise as pump selection
Database.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910868278.3A CN110487394A (en) | 2019-09-16 | 2019-09-16 | A kind of new energy water pump noise-measuring system and evaluation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910868278.3A CN110487394A (en) | 2019-09-16 | 2019-09-16 | A kind of new energy water pump noise-measuring system and evaluation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110487394A true CN110487394A (en) | 2019-11-22 |
Family
ID=68558053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910868278.3A Pending CN110487394A (en) | 2019-09-16 | 2019-09-16 | A kind of new energy water pump noise-measuring system and evaluation method |
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| Country | Link |
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| CN (1) | CN110487394A (en) |
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|---|---|---|---|---|
| CN2839985Y (en) * | 2005-05-12 | 2006-11-22 | 上海环达计算机科技有限公司 | Sound power measuring clamp |
| KR101255103B1 (en) * | 2011-12-08 | 2013-04-16 | 한국산업기술시험원 | Apparatus for measuring sound power of noise source |
| CN203464997U (en) * | 2013-08-29 | 2014-03-05 | 中国电子科技集团公司第三十六研究所 | Automatic test system of motor noises |
| TW201508251A (en) * | 2013-08-28 | 2015-03-01 | Ship & Ocean Ind R & D Ct | Underwater noise meter |
| CN105963037A (en) * | 2016-04-15 | 2016-09-28 | 吕迪 | Novel oral cavity rinsing device |
| CN107701467A (en) * | 2017-09-26 | 2018-02-16 | 重庆长安汽车股份有限公司 | Water pump monomer NVH method of evaluating performance |
| CN108591127A (en) * | 2018-05-11 | 2018-09-28 | 芜湖奇点新能源科技有限公司 | Mounting bracket, water pump and the automobile with the water pump of water pump |
| CN109883540A (en) * | 2019-03-15 | 2019-06-14 | 华域皮尔博格泵技术有限公司 | Test the device of water pump noise |
| CN209131830U (en) * | 2018-12-12 | 2019-07-19 | 广州丹品人工环境技术有限公司 | A kind of hemisphere envelope method noise testing bracket |
| CN210346903U (en) * | 2019-09-16 | 2020-04-17 | 江铃汽车股份有限公司 | New forms of energy water pump noise testing arrangement |
-
2019
- 2019-09-16 CN CN201910868278.3A patent/CN110487394A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2839985Y (en) * | 2005-05-12 | 2006-11-22 | 上海环达计算机科技有限公司 | Sound power measuring clamp |
| KR101255103B1 (en) * | 2011-12-08 | 2013-04-16 | 한국산업기술시험원 | Apparatus for measuring sound power of noise source |
| TW201508251A (en) * | 2013-08-28 | 2015-03-01 | Ship & Ocean Ind R & D Ct | Underwater noise meter |
| CN203464997U (en) * | 2013-08-29 | 2014-03-05 | 中国电子科技集团公司第三十六研究所 | Automatic test system of motor noises |
| CN105963037A (en) * | 2016-04-15 | 2016-09-28 | 吕迪 | Novel oral cavity rinsing device |
| CN107701467A (en) * | 2017-09-26 | 2018-02-16 | 重庆长安汽车股份有限公司 | Water pump monomer NVH method of evaluating performance |
| CN108591127A (en) * | 2018-05-11 | 2018-09-28 | 芜湖奇点新能源科技有限公司 | Mounting bracket, water pump and the automobile with the water pump of water pump |
| CN209131830U (en) * | 2018-12-12 | 2019-07-19 | 广州丹品人工环境技术有限公司 | A kind of hemisphere envelope method noise testing bracket |
| CN109883540A (en) * | 2019-03-15 | 2019-06-14 | 华域皮尔博格泵技术有限公司 | Test the device of water pump noise |
| CN210346903U (en) * | 2019-09-16 | 2020-04-17 | 江铃汽车股份有限公司 | New forms of energy water pump noise testing arrangement |
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