CN107605780A - Blower fan air inlet experimental test air channel and its operating method - Google Patents
Blower fan air inlet experimental test air channel and its operating method Download PDFInfo
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- CN107605780A CN107605780A CN201710755449.2A CN201710755449A CN107605780A CN 107605780 A CN107605780 A CN 107605780A CN 201710755449 A CN201710755449 A CN 201710755449A CN 107605780 A CN107605780 A CN 107605780A
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Abstract
The invention discloses a kind of blower fan air inlet experimental test air-duct apparatus, including test air channel, manometric module and Throttle module, it is characterized in that, the test air channel is divided into some sections；The manometric module includes pressure tap, pressure tap connecting pipe and pressure gauge, some groups of pressure taps is provided with the tube wall of the TCH test channel, every group of pressure tap successively, is arranged in tube wall one week, and is connected with pressure tap connecting pipe and pressure gauge；The Throttle module includes throttle control board and honeycomb screen, the throttle control board and honeycomb screen are respectively provided in two sections of front and rear test air channels, wherein throttle control board is used to control changes in flow rate in test process, and honeycomb screen is used for steady air flow, improves the degree of accuracy of measurement result.Advantage：The present invention opens the pore quantity on metal choke block to control flow to change by controlling, and the repeatability to same test point can be achieved during experiment, be easy to test operation, improve test efficiency；Test air channel is divided into 3 sections, improves testing efficiency.
Description
Technical field
The present invention relates to a kind of centrifugal blower air inlet experimental test air channel and its operating method, belongs to fluid machinery test dress
Put technical field
Background technology
Test air channel is the critical equipment for examining fan performance.Air channel is tested in testing experiment, is principally obtaining blower fan
Flow and the primary data of two performances of pressure.According to national standard (GB/T 1236-2000), industrial ventilation machine is tested and used
There are corresponding standardisation requirements in air channel, proportionate relationship to air channel diameter and length and to pressure tap, throttling wire netting, rectification
Status requirement of grid etc..
Traditional test air channel length is longer, as shown in figure 1, throttling wire netting and honeycomb screen assembling are not easy with positioning；Uniformly
4 arm gaging holes being distributed on air channel are connected using flexible plastic pipe with test with pressure gauge, and pipeline obstruction, test knot easily occurs
Fruit situation devious；The process of throttling wire netting control flow is mainly affixed on wire netting using paper and gauze and come controlling stream
Amount, this control method, it is difficult to effective incremental control flow, and be difficult to be repeated twice the similar experiment of flow.
The content of the invention
The technical problems to be solved by the invention are the defects of overcoming prior art, there is provided provide a kind of industrial centrifugal ventilation
Machine test air-duct apparatus and its operating method, to solve inaccurate existing test air channel flow adjustment, pressure measurement hole plug, be difficult to
The technical problems such as assembling.
In order to solve the above technical problems, the present invention provides a kind of blower fan air inlet experimental test air-duct apparatus, including test wind
Road, manometric module and Throttle module, it is characterized in that, the test air channel is divided into some sections；The manometric module include pressure tap,
Pressure tap connecting pipe and pressure gauge, are provided with some groups of pressure taps on the tube wall of the TCH test channel, every group of pressure tap successively,
It is arranged in tube wall one week, and is connected with pressure tap connecting pipe and pressure gauge；The Throttle module includes throttle control board and whole
Grid are flowed, the throttle control board and honeycomb screen are respectively provided in two sections of front and rear test air channels, and wherein throttle control board is used to survey
Changes in flow rate is controlled during examination, honeycomb screen is used for steady air flow, improves the degree of accuracy of measurement result.
Further, the test air channel includes three sections of test air channels, wherein the first test air channel passes through first flange disk
It is connected with the one end in the second test air channel, the other end in the second test air channel tests air channel by second flange disk connection the 3rd,
The other end in the 3rd test air channel is provided with the 3rd ring flange and is used to connect ventilation blower；The first flange disk and second flange disk are also
Assembling positioning throttle control board and honeycomb screen is respectively used to, current collector, described is provided with the wind passage mouth in the first test air channel
Manometric module described in first group is provided between current collector and throttle control board；Second group of institute is additionally provided with the 3rd test air channel
State manometric module；Current collector pressure difference test point is provided with the pressure tap connecting pipe of manometric module described in first group, second
The pressure tap connecting pipe of the group manometric module is provided with section static pressure test point.
Further, the pressure tap, every group 4 are evenly distributed on the test air channel tube wall of one week, connect with pressure tap
Adapter road is connected with pressure gauge, the measurement for relevant pressure；The throttle control board is located in first paragraph test air channel, is used for
Changes in flow rate is controlled in test process；The honeycomb screen, for steady air flow, improves measurement knot in the 3rd section of test air channel
The degree of accuracy of fruit.
Further, the throttle control board is metal perforated plate, and the layout of hole is sought optimal mainly in combination with mathematical method
Layout.
Further, the pressure tap connecting pipe uses metallic conduit, and 4 pressure taps of connection are fixed on test air channel
On.
A kind of operating method of blower fan air inlet experimental test air-duct apparatus, it is characterized in that, comprise the following steps：
Step 1, assemble and connect the device and blower fan；
Step 2, it is affixed on using the paper of suitable size on the throttle control board in test air channel, opens blower fan, make blower fan
Under without flow working condition；
Step 3, paper being disclosed out successively according to hole on throttle control board, is stepped up the flow of blower fan, record is surveyed successively
Try current collector pressure differential deltap p on air channelnWith section gauge static pressure pest1, while record blower fan relative rotation speed n；
Step 4, record the environmental factor around when testing, including atmospheric temperature ta, atmospheric pressure pa, steam-laden pressure
Power PVAnd motor performance parameter；
Step 5, by calculating test the data obtained, obtain blower fan P-Q performance curves.
Further, the test result under same flow can be specifically repeated in the step 3.
The beneficial effect that the present invention is reached：
The present invention opens the pore quantity on metal choke block to control flow to change by controlling, can during experiment
The repeatability to same test point is realized, is easy to test operation, improves test efficiency；
Present invention test air channel is divided into 3 sections, cuts air channel in throttle control board and honeycomb screen punishment, is easy to assemble and positions,
Beneficial to worker's processing, disassembly and installation.The metal connecting tube road between pressure arm gaging hole and pressure gauge on air channel is not easily blocked,
It is easy to test process, improves testing efficiency.
Brief description of the drawings
Fig. 1 is conventional centrifugal fan test air channel structure schematic diagram；
Fig. 2 is the industrial centrifugal fan test air channel structure figure of the present invention；
Fig. 3 is the flow chart of test operation method of the present invention.
1 in figure：Current collector；2：Pressure tap；3：Honeycomb screen；4：Test air channel；5：First test air channel；6：Current collector pressure
Poor test point；7：Throttle control board；8：Ring flange；9：Second test air channel；10：Pressure tap connecting pipe；11：Section static pressure is surveyed
Pilot；12：3rd test air channel.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, and can not be limited the scope of the invention with this.
As illustrated in fig. 1 and 2, a kind of blower fan air inlet experimental test air-duct apparatus, including test air channel 4, manometric module and section
Flow module, it is characterized in that, the test air channel 4 is divided for some sections；The manometric module includes pressure tap 2, pressure tap connecting tube
Road 10 and pressure gauge, are provided with some groups of pressure taps 2 on the tube wall of the TCH test channel, and every group of pressure tap 2 is sequentially arranged in
Tube wall one week, and be connected with pressure tap connecting pipe 10 and pressure gauge；The Throttle module includes throttle control board 7 and honeycomb screen
3, the throttle control board 7 and honeycomb screen 3 are respectively provided in two sections of front and rear test air channels, and wherein throttle control board 7 is used to survey
Changes in flow rate is controlled during examination, honeycomb screen 3 is used for steady air flow, improves the degree of accuracy of measurement result.
In the present embodiment, the test air channel includes three sections of test air channels, wherein the first test air channel 5 passes through first flange
Disk is connected with the one end in the second test air channel 9, and the other end in the second test air channel 9 passes through the test wind of second flange disk connection the 3rd
Road 12, the other end in the 3rd test air channel 12 is provided with the 3rd ring flange, for connecting ventilation blower；The first flange disk and second
Ring flange is also respectively used to assembling positioning throttling control 7 and honeycomb screen 3, and collection is provided with the wind passage mouth in the first test air channel 5
Manometric module described in first group is provided between stream device 1, the current collector 1 and throttle control board 7；At the 3rd test air channel 12
It is additionally provided with manometric module described in second group；Current collector pressure difference is provided with the pressure tap connecting pipe of manometric module described in first group
Test point, static pressure test point in section is provided with the pressure tap connecting pipe of manometric module described in second group.
In the present embodiment, the pressure tap, every group 4 are evenly distributed on the test air channel tube wall of one week, with pressure tap
Connecting pipe is connected with pressure gauge, the measurement for relevant pressure；The throttle control board is located in first paragraph test air channel, uses
Changes in flow rate is controlled in test process；The honeycomb screen, for steady air flow, improves measurement in the 3rd section of test air channel
As a result the degree of accuracy.
In the present embodiment, the throttle control board is metal perforated plate, and the layout of hole is sought most mainly in combination with mathematical method
Excellent layout.
In the present embodiment, the pressure tap connecting pipe uses metallic conduit, and 4 pressure taps of connection are fixed on test air channel
On.
As shown in figure 3, in the present embodiment, a kind of operating method in industrial centrifugal ventilation blower test air channel, pass through control
Throttling metallic plate on pore quantity come control test air channel in flow, the numerical value tested out according to two groups of pressure gauges, with reference to wind
The real-time rotating speed of motor and the data of environmental condition on machine, obtain the P-Q performance curves of centrifugal blower.Comprise the following steps：
Step 1, the preparation before test, assemble and connect test device and blower fan.
Specifically, throttling metallic plate and honeycomb screen all need to be fixed in test air channel, as shown in Fig. 2 being processing and assembling
It is convenient, test air channel is divided into three sections of processing, respectively will throttling metallic plate and honeycomb screen fixed to first paragraph air channel end and the
Three sections of air channels are just held, and pressure measurement sky connecting pipe are tested whether to block, two groups of pressure taps connect pressure gauge respectively, through blower fan air intake
Mouth is connected with test air channel.
Step 2, it is affixed on using the paper of suitable size on the throttle control board in test air channel, opens blower fan, make blower fan
Under without flow working condition.
Step 3, paper being disclosed out successively according to hole on throttle control board, is stepped up the flow of blower fan, record is surveyed successively
Try current collector pressure differential deltap p on air channelnWith section gauge static pressure pest1, while record blower fan relative rotation speed n.
Step 4, record the environmental factor around when testing, including atmospheric temperature ta, atmospheric pressure pa, relative air humidity
Φ, steam-laden pressure PVAnd motor performance parameter.
Step 5, by calculating test the data obtained, blower fan P-Q performance curves are obtained, curve is tested,
Operating mode point data is specified in repeatable experiment.
Specifically, volume flow may be calculated as obtaining：
α in formulanεnFor the compound discharge coefficient of current collector, dnFor flow measurement air channel diameter, ρ1For entrance atmospheric density.
Blower fan dynamic pressure calculation formula is
ρ in formula2For gas vent density, A2For fan outlet area.
Corresponding fan static pressure can be also calculated by respective formula, and the data being thus calculated are converted into standard environment
Under temperature, you can obtain final test result.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of blower fan air inlet experimental test air-duct apparatus, including test air channel, manometric module and Throttle module, it is characterized in that,
The test air channel is divided into some sections；The manometric module includes pressure tap, pressure tap connecting pipe and pressure gauge, in the survey
The tube wall pinged is provided with some groups of pressure taps, and every group of pressure tap successively, is arranged in tube wall one week, and with pressure tap connecting tube
Road connects with pressure gauge；The Throttle module includes throttle control board and honeycomb screen, throttle control board and the honeycomb screen difference
It is located in two sections of front and rear test air channels, wherein throttle control board is used to control changes in flow rate in test process, and honeycomb screen is used for
Steady air flow, improve the degree of accuracy of measurement result.
2. a kind of blower fan air inlet experimental test air-duct apparatus according to claim 1, its feature, the test air channel include
Three sections of test air channels, wherein the first test air channel is connected by first flange disk with the one end in the second test air channel, the second test
The other end in air channel is provided with the 3rd ring flange by the test air channel of second flange disk connection the 3rd, the other end in the 3rd test air channel
For connecting ventilation blower；The first flange disk and second flange disk are also respectively used to assembling positioning throttle control board and rectification
Grid, it is described first test air channel wind passage mouth at be provided between current collector, the current collector and throttle control board be provided with first group
The manometric module；Manometric module described in second group is additionally provided with the 3rd test air channel；In manometric module described in first group
Pressure tap connecting pipe be provided with current collector pressure difference test point, on the pressure tap connecting pipe of manometric module described in second group
Provided with section static pressure test point.
3. a kind of blower fan air inlet experimental test air-duct apparatus according to claim 2, its feature, the pressure tap, every group 4
It is individual to be evenly distributed on the test air channel tube wall of one week, it is connected with pressure tap connecting pipe and pressure gauge, for relevant pressure
Measurement；The throttle control board is located in first paragraph test air channel, for controlling changes in flow rate in test process；The honeycomb screen
In the 3rd section of test air channel, for steady air flow, the degree of accuracy of measurement result is improved.
4. a kind of blower fan air inlet experimental test air-duct apparatus according to claim 1, it is characterized in that, the throttle control board
For metal perforated plate, the layout of hole seeks optimal location mainly in combination with mathematical method.
5. a kind of blower fan air inlet experimental test air-duct apparatus according to claim 1, it is characterized in that, the pressure tap connection
Pipeline uses metallic conduit, and 4 pressure taps of connection are fixed on test air channel.
6. a kind of operating method of the blower fan air inlet experimental test air-duct apparatus based on claim 1-4 any one, its feature
It is to comprise the following steps：
Step 1, assemble and connect the device and blower fan；
Step 2, it is affixed on using the paper of suitable size on the throttle control board in test air channel, opens blower fan, be in blower fan
Without under flow working condition；
Step 3, paper is disclosed out successively according to hole on throttle control board, is stepped up the flow of blower fan, successively record test wind
Current collector pressure differential deltap p on roadnWith section gauge static pressure pest1, while record blower fan relative rotation speed n；
Step 4, record the environmental factor around when testing, including atmospheric temperature ta, atmospheric pressure pa, steam-laden pressure PV
And motor performance parameter；
Step 5, by calculating test the data obtained, obtain blower fan P-Q performance curves.
7. a kind of operating method of blower fan air inlet experimental test air-duct apparatus according to claim 6, it is characterized in that, it is described
The test result under same flow can be specifically repeated in step 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710755449.2A CN107605780A (en) | 2017-08-29 | 2017-08-29 | Blower fan air inlet experimental test air channel and its operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710755449.2A CN107605780A (en) | 2017-08-29 | 2017-08-29 | Blower fan air inlet experimental test air channel and its operating method |
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| CN107605780A true CN107605780A (en) | 2018-01-19 |
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| CN201710755449.2A Pending CN107605780A (en) | 2017-08-29 | 2017-08-29 | Blower fan air inlet experimental test air channel and its operating method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374905A (en) * | 2019-06-17 | 2019-10-25 | 南京理工大学 | A kind of performance testing device of centrifugal impeller |
| CN112943670A (en) * | 2021-03-31 | 2021-06-11 | 平安电气股份有限公司 | Standard air duct test device for aerodynamic performance of ventilator |
| CN115596693A (en) * | 2022-09-02 | 2023-01-13 | 中国电子科技集团公司第三十八研究所（Cn） | Performance test system and method of centrifugal fan in near space simulation environment |
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| JPH04125443A (en) * | 1990-09-17 | 1992-04-24 | Mitsubishi Heavy Ind Ltd | Apparatus for testing performance of air blower |
| CN202628482U (en) * | 2011-12-08 | 2012-12-26 | 大连海事大学 | Automatic blower fan performance testing system |
| CN203249749U (en) * | 2013-02-28 | 2013-10-23 | 山东大学 | Automobile radiator wind tunnel testing device for simulating actual operation conditions |
| CN203879802U (en) * | 2014-06-05 | 2014-10-15 | 陈保黎 | Combination fan performance test device |
| CN206221225U (en) * | 2016-11-17 | 2017-06-06 | 绍兴上虞九阳风机有限公司 | A kind of draught fan performance test device |
-
2017
- 2017-08-29 CN CN201710755449.2A patent/CN107605780A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04125443A (en) * | 1990-09-17 | 1992-04-24 | Mitsubishi Heavy Ind Ltd | Apparatus for testing performance of air blower |
| CN202628482U (en) * | 2011-12-08 | 2012-12-26 | 大连海事大学 | Automatic blower fan performance testing system |
| CN203249749U (en) * | 2013-02-28 | 2013-10-23 | 山东大学 | Automobile radiator wind tunnel testing device for simulating actual operation conditions |
| CN203879802U (en) * | 2014-06-05 | 2014-10-15 | 陈保黎 | Combination fan performance test device |
| CN206221225U (en) * | 2016-11-17 | 2017-06-06 | 绍兴上虞九阳风机有限公司 | A kind of draught fan performance test device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374905A (en) * | 2019-06-17 | 2019-10-25 | 南京理工大学 | A kind of performance testing device of centrifugal impeller |
| CN112943670A (en) * | 2021-03-31 | 2021-06-11 | 平安电气股份有限公司 | Standard air duct test device for aerodynamic performance of ventilator |
| CN115596693A (en) * | 2022-09-02 | 2023-01-13 | 中国电子科技集团公司第三十八研究所（Cn） | Performance test system and method of centrifugal fan in near space simulation environment |
| CN115596693B (en) * | 2022-09-02 | 2024-04-16 | 中国电子科技集团公司第三十八研究所 | Performance test system and method of centrifugal fan in near space simulation environment |
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Application publication date: 20180119 |