CN105928615A - Noise testing device - Google Patents
Noise testing device Download PDFInfo
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- CN105928615A CN105928615A CN201610431583.2A CN201610431583A CN105928615A CN 105928615 A CN105928615 A CN 105928615A CN 201610431583 A CN201610431583 A CN 201610431583A CN 105928615 A CN105928615 A CN 105928615A
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- calibration
- noise testing
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- support
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- 238000012360 testing method Methods 0.000 title claims abstract description 122
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009466 transformation Effects 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 invention provides a noise testing device. The device comprises a calibrating mechanism. The calibrating mechanism comprises a calibrating body and a support assembly. The first end of the calibrating body is used for contacting the outer wall of a transformer. The contact surface, which contacts the outer wall of the transformer, of the calibrating body is a first contact surface. The support assembly comprises a first support body. The first end of the first support body is connected with the calibrating body. The second end of the first support body is used for mounting a noise testing instrument. A distance between the second end of the first support body and the first contact surface is a first preset distance. The height of the first support body is a first preset height. According to the noise testing device provided by the invention, by presetting the test height and the test distance, test point calibrating and noise testing are carried out at the same time, and the efficiency of noise testing is improved.
Description
Technical Field
The invention relates to the technical field of power transmission and transformation, in particular to a noise testing device.
Background
Currently, according to the requirements of national standards, the factory testing of transformers includes a series of contents, which include the measurement of the noise level of the transformer.
The noise measurement work has high requirements on the environment, most of the noise measurement work needs to be carried out under the condition of workshop shutdown, and when each transformer manufacturer carries out factory noise level measurement, test points are calibrated firstly, and the requirements of a certain distance and height between each test point and each measured point on the outer wall of the transformer need to be met, and then the noise level measurement is carried out on each test point.
Disclosure of Invention
In view of this, the invention provides a noise testing device, and aims to solve the problem that the existing noise testing method needs to consume a large amount of labor and time, so that the noise testing work efficiency is low.
In one aspect, the present disclosure is directed to a noise testing apparatus. The device includes: a calibration mechanism; the calibration mechanism comprises a calibration body and a support component; the first end of the calibration body is used for being in contact with the outer wall of the transformer, and the contact surface of the first end of the calibration body in contact with the outer wall of the transformer is a first contact surface; the supporting component comprises a first supporting body, the first end of the first supporting body is connected with the calibration body, the second end of the first supporting body is used for installing a noise test instrument, the distance between the second end of the first supporting body and the first contact surface is a first preset distance, and the height of the first supporting body is a first preset height.
Further, in the above noise testing apparatus, the support member further includes: a second support; the second support body and the first support body are arranged on the same side of the calibration body, the first end of the second support body is connected with the calibration body, the second end of the second support body is used for installing a noise test instrument, the distance between the second end of the second support body and the first contact surface is a second preset distance, and the height of the second support body is a second preset height.
Further, the noise testing apparatus further includes: a plurality of rungs; at least two calibration mechanisms are arranged; the calibrating mechanisms are arranged in parallel, the distance between every two adjacent calibrating mechanisms is a third preset distance, and the adjacent calibrating mechanisms are connected through the crosspiece.
Furthermore, in the noise testing device, two grooves symmetrical with respect to the axis are formed in the wall surface of each calibration body, and the grooves are used for being connected with the crosspiece in an inserting mode.
Further, the noise testing apparatus further includes: a cushion pad; the buffer pad is connected to the first end of the calibration body, the buffer pad is used for contacting with the outer wall of the transformer, the contact surface of the buffer pad contacting with the outer wall of the transformer is a second contact surface, the distance between the second end of the first support body and the second contact surface is a first preset distance, and the distance between the second end of the second support body and the second contact surface is a second preset distance.
Further, in the above noise testing apparatus, the first support and the second support are both extendable supports.
Further, in the above noise testing apparatus, the second end of the first supporting body and the second end of the second supporting body are both provided with a groove, and the groove is used for installing a noise testing instrument.
Further, in the above noise testing apparatus, the first supporting body is perpendicular to the calibration body.
Further, in the above noise testing apparatus, the second supporting body is perpendicular to the calibration body.
Further, in the above noise testing apparatus, the calibration body is detachably connected to the supporting member; and/or the calibration body is detachably connected with the crosspiece.
According to the noise testing device, the noise testing instrument is installed at the second end of the first supporting body, the distance between the first supporting body and the first contact surface is a first preset distance, the height of the first supporting body is a first preset height, calibration of the testing point and noise testing are simultaneously carried out through the preset testing height and the testing distance, and the noise testing work efficiency is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a front view of a noise testing apparatus according to an embodiment of the present invention;
fig. 2 is a top view of a noise testing apparatus according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, fig. 1 is a front view of a noise testing apparatus according to an embodiment of the present invention. As shown in the figure, the noise test apparatus includes: and a calibration mechanism 1.
The calibration mechanism 1 includes a calibration body 11 and a support component 12, a first end (a left end shown in fig. 1) of the calibration body 11 is used for contacting with an outer wall of the transformer 2, a contact surface of the first end of the calibration body 11 contacting with the outer wall of the transformer 2 is a first contact surface, and in specific implementation, the calibration body 11 may be a steel pipe.
The supporting component 12 includes a first supporting body 121, a first end (a lower end shown in fig. 1) of the first supporting body 121 is connected to the calibration body 11, a second end (an upper end shown in fig. 1) of the first supporting body 121 is a test point 5, a second end of the first supporting body 121 may be provided with a groove or a platform, and a noise test instrument may be placed in the groove or the platform for noise test. The distance between the second end of the first supporting body 121 and the first contact surface is a first preset distance S1The height of the first supporting body 121 is a first predetermined height h1According to the requirement of GB/T1904.10-2003, the first preset distance S1May be 0.3m, a first predetermined height h1May be 1/3 of the height of the transformer 2, and in practical application, the first supporting body 121 may also be a steel pipe, and preferably, the first supporting body 121 is perpendicular to the signA stator 11.
During testing, the first end of the calibration body 11 is in contact with the outer wall of the transformer 2 due to the first preset height h of the first support body 1211Namely the height of the test point 5 relative to the tested point, the height requirement between the test point 5 and the tested point is satisfied, and the first preset distance S is between the second end of the first supporting body 121 and the first contact surface1That is, the distance between the test point 5 and the tested point is satisfied, so that the noise test can be performed only by installing a noise test instrument at the second end of the first support 121, and the calibration of the test point and the noise test can be performed at the same time by presetting the test height and the test distance, thereby improving the efficiency of the noise test.
In the above embodiment, the support assembly 12 may further include: a second support 122. Wherein, the second support body 122 and the first support body 121 are both disposed on the same side of the calibration body 1, the first support body 121 and the second support body 122 are both disposed on the same bus of the calibration body 11, the first end (the lower end shown in fig. 1) of the second support body 122 is connected to the calibration body 11, the second end (the upper end shown in fig. 1) of the second support body 122 is a test point 6, the second end of the second support body 122 can be provided with a groove or a platform, a noise test instrument can be disposed in the groove or the platform for noise test, and the distance between the second end of the second support body 122 and the first contact surface is a second preset distance S2The height of the second supporting body 122 is a second predetermined height h2According to the requirement of GB/T1904.10-2003, the first preset distance S2Can be 2m, a first preset height h2The height 2/3 of the transformer 2 can be used, and in practical application, the second supporting body 122 can also be a steel pipe, and preferably, the first supporting body 121 is perpendicular to the calibration body 11.
During testing, the first end of the calibration body 11 is in contact with the outer wall of the transformer 2 due to the second preset height h of the second supporting body 1222Namely the height of the test point 6 relative to the tested point, and meets the height requirement between the test point 6 and the tested point, and the second end of the second supporting body 122A second predetermined distance S between the contact surfaces2That is, the distance between the test point 6 and the tested point is satisfied, so that the noise test can be performed only by installing a noise test instrument at the second end of the second support 122, and the calibration of the test point and the noise test can be performed at the same time by presetting the test height and the test distance, thereby improving the efficiency of the noise test.
Referring to fig. 2, fig. 2 is a top view of a noise testing apparatus according to an embodiment of the present invention. As shown, the above embodiment may further include a plurality of crosspieces 3. Wherein, calibration mechanism 1 is two at least, and each calibration mechanism 1 all sets up side by side, and the distance between adjacent calibration mechanism 1 is third preset distance S3According to the requirement of GB/T1904.10-2003, the third preset distance S3The width of the cross arm 3 can be 1m, and a groove (not shown in the figure) which is symmetrical relative to the axis is further formed in the wall surface of each calibration body 11, the groove is used for being inserted into the crosspiece 3, that is, two ends of the crosspiece 3 can be respectively arranged in the grooves on the opposite sides of the adjacent calibration bodies 11, the adjacent calibration mechanisms 1 are connected through the crosspiece 3, that is, the crosspiece 3 is 1m long and is located between the two adjacent calibration mechanisms 1, and in the specific implementation, the cross arm 3 can also be a steel pipe.
In this embodiment, the distance between adjacent calibration mechanisms 1 is a third preset distance S3Namely, the adjacent calibration mechanisms 1 are connected through the crosspiece 3 at intervals of the test positions, so that the calibration of a plurality of test points and the noise test can be carried out at the same time through the preset intervals of the test positions, and the efficiency of the noise test work is improved.
With continued reference to fig. 2, the operation of the noise testing apparatus will be described by taking the calibration mechanism 1 as two examples. During testing, the noise testing instrument is unfolded, the first ends of the two calibration bodies 11 are both contacted with the outer wall of the transformer 2, the noise testing instrument is respectively arranged at the second end of the first supporting body 121 and the second end of the second supporting body 122 of the calibration body 11 arranged below (relative to the position shown in fig. 2), the noise testing of the test point 5 and the test point 6 at the first testing position is simultaneously carried out, after the noise measurement at the first testing position is finished, the noise testing instrument is turned to the second testing position, namely the noise testing instrument is arranged at the second end of the first supporting body 121 and the second end of the second supporting body 122 of the calibration body 11 arranged above, the noise testing of the test point 5 and the test point 6 at the second testing position is finished, then the calibration body 1 and the crosspiece 3 at the first testing position are disassembled, the calibration body 11 at the first testing position is arranged at the third testing position, and the two ends of the crosspiece 3 are respectively arranged at the calibration body 11 at the second testing position and the calibration body 11 at the third testing position And repeating the steps in the grooves on the opposite sides until the noise test of the transformer 2 is completed for a whole circle.
The above embodiment may further include a cushion pad 4. Wherein, the buffer pad 4 is connected to the first end of the calibration body 11, the buffer pad 4 is used for contacting with the outer wall of the transformer 2, the contact surface of the buffer pad 4 contacting with the outer wall of the transformer 2 is the second contact surface, and the distance between the second end of the first supporting body 121 and the second contact surface is the first preset distance S1The distance between the second end of the second supporting body 122 and the second contact surface is a second preset distance S2That is, when the first end of the calibration body 11 is connected to the cushion pad 4, the first preset distance S1And a second predetermined distance S2The distance occupied by the cushion pad 4 should be added without the cushion pad 4 being attached to the first end of the calibration body 11.
In this embodiment, the buffer pad 4 is connected to the first end of the calibration body 11, so that the vibration transmitted to the noise testing device by the transformer 2 can be reduced, and the testing accuracy is improved.
In the above embodiment, the first supporting body 121 and the second supporting body 122 are both retractable supporting bodies, and the heights of the first supporting body 121 and the second supporting body 122 can be adjusted by themselves according to the height of the transformer 2.
In this embodiment, the first supporting body 121 and the second supporting body 122 are both telescopic supporting bodies, and when the height of the transformer 2 is different, the first supporting body 121 and the second supporting body 122 do not need to be replaced, and the heights of the first supporting body 121 and the second supporting body 122 are adjusted, so that the efficiency of noise testing work is improved.
In the above embodiment, the calibration body 11 and the support component 12 are detachably connected, and the calibration body 11 and the crosspiece 3 are also detachably connected, in specific implementation, the calibration body 11 and the support component 12 may be plugged, the calibration body 11 and the crosspiece 3 may also be plugged, or other detachable connections may be used, a specific connection mode may be determined according to an actual situation, and this embodiment does not limit the connection mode.
In this embodiment, the calibration body 11 and the supporting component 12 are detachably connected, and the calibration body 11 and the crosspiece 3 are also detachably connected, so that the noise testing device is convenient to assemble, disassemble and carry.
In summary, in the noise testing apparatus of the embodiment, the noise testing instrument 2 is installed at the second end of the first supporting body 121, and the distance between the first supporting body 121 and the first contact surface is the first preset distance S1The height of the first supporting body 121 is a first predetermined height h1Through presetting the test height and the test distance, the calibration of the test point and the test of the noise are simultaneously carried out, and the efficiency of the noise test work is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A noise testing device for a transformer, comprising: a calibration mechanism (1); wherein,
the calibration mechanism (1) comprises a calibration body (11) and a support component (12);
the first end of the calibration body (11) is used for being in contact with the outer wall of the transformer (2), and the contact surface of the first end of the calibration body (11) in contact with the outer wall of the transformer (2) is a first contact surface;
the supporting component (12) comprises a first supporting body (121), the first end of the first supporting body (121) is connected with the calibration body (11), the second end of the first supporting body (121) is used for installing a noise testing instrument, the distance between the second end of the first supporting body (121) and the first contact surface is a first preset distance, and the height of the first supporting body (121) is a first preset height.
2. The noise testing device of claim 1, wherein the support assembly (12) further comprises: a second support (122); wherein,
the second supporting body (122) and the first supporting body (121) are arranged on the same side of the calibration body (1), the first end of the second supporting body (122) is connected with the calibration body (11), the second end of the second supporting body (122) is used for installing a noise test instrument, the distance between the second end of the second supporting body (122) and the first contact surface is a second preset distance, and the height of the second supporting body (122) is a second preset height.
3. The noise testing apparatus of claim 2, further comprising: a plurality of rungs (3); wherein,
at least two calibration mechanisms (1) are provided;
the calibrating mechanisms (1) are arranged in parallel, the distance between every two adjacent calibrating mechanisms (1) is a third preset distance, and the adjacent calibrating mechanisms (1) are connected through the crosspiece (3).
4. The noise testing apparatus of claim 3,
the wall surface of each calibration body (11) is provided with two grooves which are symmetrical relative to the axis, and the grooves are used for being inserted with the crosspieces (3).
5. The noise testing device according to any one of claims 1 to 4, further comprising: a cushion pad (4); wherein,
the buffer pad (4) is connected to the first end of the calibration body (11), the buffer pad (4) is used for contacting with the outer wall of the transformer (2), the contact surface of the buffer pad (4) contacting with the outer wall of the transformer (2) is a second contact surface, the distance between the second end of the first support body (121) and the second contact surface is a first preset distance, and the distance between the second end of the second support body (122) and the second contact surface is a second preset distance.
6. The noise testing device according to any one of claims 1 to 4,
the first support body (121) and the second support body (122) are both telescopic support bodies.
7. The noise testing device according to any one of claims 1 to 4,
and the second end of the first support body (121) and the second end of the second support body (122) are both provided with grooves, and the grooves are used for mounting a noise test instrument.
8. The noise testing device according to any one of claims 1 to 4,
the first support body (121) is perpendicular to the calibration body (11).
9. The noise testing device according to any one of claims 2 to 4,
the second support body (122) is perpendicular to the calibration body (11).
10. The noise testing device according to any one of claims 1 to 4,
the calibration body (11) is detachably connected with the support component (12); and/or
The calibration body (11) is detachably connected with the crosspiece (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431583.2A CN105928615A (en) | 2016-06-16 | 2016-06-16 | Noise testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610431583.2A CN105928615A (en) | 2016-06-16 | 2016-06-16 | Noise testing device |
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| Publication Number | Publication Date |
|---|---|
| CN105928615A true CN105928615A (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610431583.2A Pending CN105928615A (en) | 2016-06-16 | 2016-06-16 | Noise testing device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344326A (en) * | 2013-06-28 | 2013-10-09 | 上海声望声学工程有限公司 | Acoustical power testing frame |
| CN204228257U (en) * | 2014-10-28 | 2015-03-25 | 浙江吉利控股集团有限公司 | Automobile engine nacelle noise detection apparatus |
| CN204612931U (en) * | 2015-05-26 | 2015-09-02 | 东风康明斯发动机有限公司 | A kind of test unit for measuring engine exhaust noise |
| CN205066932U (en) * | 2015-11-03 | 2016-03-02 | 贵州电网有限责任公司电力科学研究院 | Large -scale power transformer sound level test auxiliary device |
| CN205175553U (en) * | 2015-12-16 | 2016-04-20 | 龙岩市海德馨汽车有限公司 | Supply vehicle noise detection device |
-
2016
- 2016-06-16 CN CN201610431583.2A patent/CN105928615A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344326A (en) * | 2013-06-28 | 2013-10-09 | 上海声望声学工程有限公司 | Acoustical power testing frame |
| CN204228257U (en) * | 2014-10-28 | 2015-03-25 | 浙江吉利控股集团有限公司 | Automobile engine nacelle noise detection apparatus |
| CN204612931U (en) * | 2015-05-26 | 2015-09-02 | 东风康明斯发动机有限公司 | A kind of test unit for measuring engine exhaust noise |
| CN205066932U (en) * | 2015-11-03 | 2016-03-02 | 贵州电网有限责任公司电力科学研究院 | Large -scale power transformer sound level test auxiliary device |
| CN205175553U (en) * | 2015-12-16 | 2016-04-20 | 龙岩市海德馨汽车有限公司 | Supply vehicle noise detection device |
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Application publication date: 20160907 |
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