CN111693248A - Test method for small-air-volume fan - Google Patents
Test method for small-air-volume fan Download PDFInfo
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- CN111693248A CN111693248A CN202010321483.0A CN202010321483A CN111693248A CN 111693248 A CN111693248 A CN 111693248A CN 202010321483 A CN202010321483 A CN 202010321483A CN 111693248 A CN111693248 A CN 111693248A
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- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/12—Testing on a test bench
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a test method for a small air volume fan, which is carried out in a detection mechanism and comprises the following steps: s1, starting the tested fan, detecting the pressure of the air flow blown out by the tested fan after entering the air chamber through a pressure sensor, and rectifying the air flow through a rectifying network; s2, the rectified airflow circulates through the nozzle, the pressure difference sensor detects the air pressure of the spray in the spray process of the nozzle, and the temperature sensor measures the temperature; s3, roughly adjusting the air pressure of the circulated air flow through a servo butterfly valve, accurately adjusting the air pressure through an exhaust fan, and finally flowing out the circulated air flow through the exhaust fan. The invention detects the air pressure and the air quantity of the small-sized fan, improves the detection accuracy aiming at the detection of the small-sized fan, accurately controls the air pressure, has accurate measurement and is suitable for popularization.
Description
Technical Field
The invention relates to the technical field of small air volume fan detection, in particular to a test method for a small air volume fan.
Background
The fan is widely applied to the environmental protection industry, the industry, the heating ventilation industry and the like, the air volume of the fan is an important parameter of the fan, the existing fan air volume test bed is developed based on the AMAC210 standard or the requirement in GB _ T1236, the air volume is calculated through the pressure difference of two sides of a wind tunnel and the size of a nozzle, and the accurate control of the air pressure is realized through an auxiliary fan.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a test method for a small air volume fan.
A test method for a small air volume fan is carried out in a detection mechanism and comprises the following steps:
s1, starting the tested fan, detecting the pressure of the air flow blown out by the tested fan after entering the air chamber through a pressure sensor, and rectifying the air flow through a rectifying network;
s2, the rectified airflow circulates through the nozzle, the pressure difference sensor detects the air pressure of the spray in the spray process of the nozzle, and the temperature sensor measures the temperature;
s3, roughly adjusting the air pressure of the circulated air flow through a servo butterfly valve, accurately adjusting the air pressure through an exhaust fan, and finally flowing out the circulated air flow through the exhaust fan.
Further, detection mechanism is including being surveyed the fan, be surveyed one side fixedly connected with plenum of fan, the other end fixed mounting of plenum has servo butterfly valve, servo butterfly valve keeps away from the one end fixed mounting of plenum has exhaust fan, the inside fixed mounting of plenum has the rectification net, one side fixed mounting of rectification net has a plurality of nozzles, pressure sensor is installed to top one side of plenum, pressure sensor's opposite side is installed differential pressure sensor, the below fixed mounting of plenum has temperature sensor.
Furthermore, the number of rectification net is two, and the inside fixed connection of rectification net and plenum, the rectification net is located the both sides of nozzle respectively.
Furthermore, the input detection end of the differential pressure sensor is positioned at two sides of the nozzle and used for detecting the pressure difference between the nozzle before and after the nozzle is sprayed.
Furthermore, bases are fixedly installed at the bottoms of the tested fan and the exhaust fan, the tested fan is connected with the output end of the air chamber in a sealing mode through a sealing ring, and the output end of the air chamber is connected with the servo butterfly valve in a sealing mode through the sealing ring.
Furthermore, the detection mechanism is used for detecting the air quantity and the air pressure of the small high-pressure blower or detecting the small high-pressure blower.
The test method for the small air volume fan provided by the invention is provided with the detection mechanism, the air volume output by the fan is detected by the pressure sensor, and meanwhile, the pressure difference detection is carried out by the air sprayed by the nozzle, the wind power circulating in the wind chamber can be controlled and adjusted according to the servo butterfly valve, the air flow of the air inlet and outlet fans of the servo butterfly valve is gradually and synchronously adjusted, the accuracy of air flow detection is improved, the method accurately tests the air quantity and the air pressure performance of the small high-pressure blower, solves the problems that the air pressure of the auxiliary blower is lower than that of the tested blower and the air pressure cannot be accurately controlled, and simultaneously solves the problems that the small high-pressure blower has smaller air quantity and cannot be accurately measured, the invention detects the air pressure and the air quantity of the small-sized fan, improves the detection accuracy aiming at the detection of the small-sized fan, accurately controls the air pressure, has accurate measurement and is suitable for popularization.
Drawings
Fig. 1 is a schematic front view of a detection mechanism in a test method for a low-air-volume fan according to the present invention.
In the figure: the system comprises a tested fan 1, an air chamber 2, a rectifying net 3, a nozzle 4, a pressure sensor 5, a pressure difference sensor 6, a temperature sensor 7, a servo butterfly valve 8 and an exhaust fan 9.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
The invention provides a test method for a small air volume fan, which is carried out in a detection mechanism and comprises the following steps:
s1, starting the tested fan, detecting the pressure of the air flow blown out by the tested fan after entering the air chamber through a pressure sensor, and rectifying the air flow through a rectifying network;
s2, the rectified airflow circulates through the nozzle, the pressure difference sensor detects the air pressure of the spray in the spray process of the nozzle, and the temperature sensor measures the temperature;
s3, roughly adjusting the air pressure of the circulated air flow through a servo butterfly valve, accurately adjusting the air pressure through an exhaust fan, and finally flowing out the circulated air flow through the exhaust fan.
In the embodiment, the detection mechanism comprises a fan 1 to be detected, one side of the fan 1 to be detected is fixedly connected with a wind chamber 2, the other end of the wind chamber 2 is fixedly provided with a servo butterfly valve 8, one end of the servo butterfly valve 8 far away from the wind chamber 2 is fixedly provided with an exhaust fan 9, the interior of the wind chamber 2 is fixedly provided with a rectification net 3, one side of the rectification net 3 is fixedly provided with a plurality of nozzles 4, one side of the top of the wind chamber 2 is provided with a pressure sensor 5, the other side of the pressure sensor 5 is provided with a differential pressure sensor 6, a temperature sensor 7 is fixedly arranged below the wind chamber 2, the number of the rectification nets 3 is two, the rectification nets 3 are fixedly connected with the interior of the wind chamber 2, the rectification nets 3 are respectively positioned at two sides of the nozzles 4, the input detection ends of the differential pressure sensors 6 are positioned at two sides of the nozzles 4 and used for detecting the pressure difference, the output end of the tested air blower 1 is connected with the output end of the air chamber 2 in a sealing mode through a sealing ring, the output end of the air chamber 2 is connected with the servo butterfly valve 8 in a sealing mode through the sealing ring, and the detection mechanism is used for detecting the air volume and the air pressure performance of a small high-pressure air blower or detecting the small high-pressure air blower.
In the embodiment, the main body refers to the technical requirements of figure 1 in the AMAC210 standard, on the basis, an electric control servo butterfly valve 8 is added for adjusting the outlet pressure, the pressure can be roughly adjusted within the pressure range of the product, and simultaneously, a low-pressure tested fan 1 is connected in series, firstly, the circulating airflow is roughly adjusted through the servo butterfly valve 8, the airflow is precisely adjusted through an exhaust fan 9, the airflow flows out through the exhaust fan 9, the tested fan 1 is adjusted through the electric control servo butterfly valve 8 and the exhaust fan 9, the accurate adjustment can be realized, the precise control and measurement within the full pressure range of the small high-pressure blower can be realized, the air quantity and the air pressure are detected through arranging a pressure sensor 5, a pressure difference sensor 6 and a temperature sensor 7, the detection accuracy is improved, and the closed-loop control is carried out through the electric control servo butterfly valve 8 and the tested fan 1, the industrial control system realizes automatic measurement.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A test method for a small air volume fan is carried out in a detection mechanism and is characterized by comprising the following steps:
s1, starting the tested fan, detecting the pressure of the air flow blown out by the tested fan after entering the air chamber through a pressure sensor, and rectifying the air flow through a rectifying network;
s2, the rectified airflow circulates through the nozzle, the pressure difference sensor detects the air pressure of the spray in the spray process of the nozzle, and the temperature sensor measures the temperature;
s3, roughly adjusting the air pressure of the circulated air flow through a servo butterfly valve, accurately adjusting the air pressure through an exhaust fan, and finally flowing out the circulated air flow through the exhaust fan.
2. The test method for the small air volume fan is characterized in that the detection mechanism comprises a tested fan (1), one side of the tested fan (1) is fixedly connected with an air chamber (2), the other end of the air chamber (2) is fixedly provided with a servo butterfly valve (8), one end, far away from the air chamber (2), of the servo butterfly valve (8) is fixedly provided with an exhaust fan (9), the interior of the air chamber (2) is fixedly provided with a rectifying net (3), one side of the rectifying net (3) is fixedly provided with a plurality of nozzles (4), one side of the top of the air chamber (2) is provided with a pressure sensor (5), the other side of the pressure sensor (5) is provided with a differential pressure sensor (6), and the lower part of the air chamber (2) is fixedly provided with a temperature sensor (7).
3. The test method for the small air volume fan according to claim 2, wherein the number of the rectifying nets (3) is two, the rectifying nets (3) are fixedly connected with the inside of the air chamber (2), and the rectifying nets (3) are respectively positioned at two sides of the nozzle (4).
4. The test method for the small air volume fan according to claim 2, wherein the input detection ends of the differential pressure sensor (6) are positioned at two sides of the nozzle (4) and are used for detecting the pressure difference between before and after the nozzle (4) is sprayed.
5. The test method for the small air volume fan is characterized in that bases are fixedly arranged at the bottoms of the fan (1) to be tested and the exhaust fan (9), the fan (1) to be tested is connected with the output end of the air chamber (2) in a sealing mode through a sealing ring, and the output end of the air chamber (2) is connected with the servo butterfly valve (8) in a sealing mode through the sealing ring.
6. The testing method for the small air volume fan according to claim 1, wherein the detecting mechanism is used for detecting the air volume and air pressure performance of the small high-pressure blower or the small high-pressure fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321483.0A CN111693248A (en) | 2020-04-22 | 2020-04-22 | Test method for small-air-volume fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010321483.0A CN111693248A (en) | 2020-04-22 | 2020-04-22 | Test method for small-air-volume fan |
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|---|---|
| CN111693248A true CN111693248A (en) | 2020-09-22 |
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| CN202010321483.0A Pending CN111693248A (en) | 2020-04-22 | 2020-04-22 | Test method for small-air-volume fan |
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|---|---|---|---|---|
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| CN204327155U (en) * | 2014-11-18 | 2015-05-13 | 安徽省皖北煤电集团有限公司 | A kind of for mine ventilation Dust Removal Experiment device |
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| CN206132297U (en) * | 2016-08-31 | 2017-04-26 | 株洲中车时代电气股份有限公司 | Force ventilation motor air cooling system |
| CN207231786U (en) * | 2017-10-20 | 2018-04-13 | 红河学院 | A kind of air-valve comprehensive performance test device |
| CN207975005U (en) * | 2018-01-06 | 2018-10-16 | 清能德创电气技术（北京）有限公司 | A kind of AC servo driver fan radiating test device |
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2020
- 2020-04-22 CN CN202010321483.0A patent/CN111693248A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101109672A (en) * | 2006-07-19 | 2008-01-23 | 上海理工大学 | Air compartment type draught fan performance test device for both air inflowing and exhausting |
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| CN202266402U (en) * | 2011-10-23 | 2012-06-06 | 德州市产品质量监督检验所 | System for testing performance of air chamber type air feed and exhaust general fan |
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Application publication date: 20200922 |
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| RJ01 | Rejection of invention patent application after publication |