CN109387351A - A kind of air-cooled flow resistance test method and device - Google Patents
A kind of air-cooled flow resistance test method and device Download PDFInfo
- Publication number
- CN109387351A CN109387351A CN201811572286.5A CN201811572286A CN109387351A CN 109387351 A CN109387351 A CN 109387351A CN 201811572286 A CN201811572286 A CN 201811572286A CN 109387351 A CN109387351 A CN 109387351A
- Authority
- CN
- China
- Prior art keywords
- flow resistance
- air
- cooled
- blower
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The embodiment of the present invention provides a kind of air-cooled flow resistance test method, wherein the described method includes: air-cooled flow resistance tester is passed through equipment under test in piping connection；By the voltage setting of the air-cooled flow resistance tester to operating voltage；The blower of the air-cooled flow resistance tester is started to work, and at least three air quantity Q are obtained；The blower function transferred in the programmable controller of the air-cooled flow resistance tester；According to the blower function and at least three air quantity Q, corresponding at least three flow resistances P is calculated；By obtaining the flow resistance curve of equipment under test at least three air quantity Q and corresponding at least three flow resistances P fitting.
Description
Technical field
Electronic equipment machinery structural reliability technical research.
Background technique
Electronic equipment carries out usually requiring wind quantity test instrument test air quantity when flow resistance test and inclined-tube manometer measurement enters
One's intention as revealed in what one says pressure, measurement air quantity and entrance wind pressure so repeatedly are more time-consuming.
Summary of the invention
The embodiment of the present invention proposes that a kind of air-cooled flow resistance test method and device, air quantity and wind pressure can be achieved visual
Change, can quickly carry out flow resistance test.
First invention, air-cooled flow resistance test method provided in an embodiment of the present invention, which comprises
Air-cooled flow resistance tester is passed through into equipment under test in piping connection；
By the voltage setting of the air-cooled flow resistance tester to operating voltage；
The blower of the air-cooled flow resistance tester is started to work, and at least three air quantity Q are obtained；
The blower function transferred in the programmable controller of the air-cooled flow resistance tester；
According to the blower function and at least three air quantity Q, corresponding at least three flow resistances P is calculated；
By showing that the flow resistance of equipment under test is bent at least three air quantity Q and corresponding at least three flow resistances P fitting
Line.
Optionally, after the flow resistance curve for obtaining equipment under test, method further include:
The flow resistance curve is shown.
Optionally, if the air outlet of the air-cooled flow resistance tester and the sectional area of equipment under test air intake vent differ by more than it is pre-
If value, then the flow resistance P is adjusted according to the pressure drop coefficient of actual measurement.
Second invention, a kind of air-cooled flow resistance test device provided in an embodiment of the present invention, described device include: power supply (1),
Adjustable air volume blower (2), volume flowmeter (3), water flow collection device (4), flow display device (5), programmable controller (6) and
Flow resistance display device (7), in which:
The power supply (1) links together with the adjustable air volume blower (2), and the volume flowmeter (3) setting is can
It adjusts on air quantity blower fan (2) air-out direction；
The water flow collection device (4) is for acquiring air quantity Q；
The flow display device (5) inputs the programmable controller for showing the air quantity Q, while by air quantity Q
(6)；
The programmable controller (6) is for calculating flow resistance P；
The flow resistance display device (7) is for showing flow resistance P.
The air-cooled flow resistance test device provided is provided through the invention, flow resistance test can be carried out quickly to electronic equipment,
Air quantity and wind pressure visualize, while influence of the different air quantity to equipment can be investigated in commissioning device.
Detailed description of the invention
Fig. 1 exemplary diagram one provided by the invention；
Fig. 2 exemplary diagram two provided by the invention；
Fig. 3 exemplary diagram three provided by the invention.
Specific embodiment
The cold flow resistance tester internal structure of Portable wind is as shown in Figure 1:
Equipment composition: power supply 1 links together with adjustable air volume blower 2, and stage body product is arranged on blower air-out direction
Flowmeter 3, water flow collection device 4 collect flow value and are shown by flow display device 5, while can by flow value input
Programmable controller 6 can be calculated equipment flow resistance and be shown by flow resistance display device 7.
Working principle is as follows:
The flow resistance P of ventilation equipment is generally and the quadratic power of wind speed v is proportional, and relational expression is as follows:
Wherein k is resistance coefficient, and ρ is atmospheric density, and flow Q and the relational expression of wind speed v are as follows:
Wherein A is air duct cross-sectional area, therefore equipment flow resistance is also directly proportional to the quadratic power of flow Q.
Adjustable air volume blower controls exportable several different working curves by voltage, and the air quantity and wind pressure of every curve are all
Known function can be fitted to be stored in programmable controller, as shown in Figure 2.
When the cold flow resistance tester of Portable wind and equipment under test, which link together, opens simultaneously blower work, equipment flow resistance
Intersection point with discharge relation curve and blower working curve is exactly the real work point (point 1,2,3,4) of entire test macro.Such as
Shown in Fig. 3.
The real work point air quantity of test macro can be read and be shown by built-in volume flowmeter, then will
The fanman that airflow value out is drafted before being brought into makees the Resistance Value that test macro can be calculated in curvilinear function, and shows
Come.
If tester air outlet differs larger with equipment under test air intake vent sectional area, calculated pressure value should also root
Appropriate adjustment is carried out according to experience and the pressure drop coefficient of actual measurement.
The equipment course of work is as follows:
The cold flow resistance tester of Portable wind is passed through into equipment under test in piping connection；
Power supply is opened, designated value 1 is set the voltage to, blower starts to start work, writes down volume flowmeter reading at this time
Air quantity Q1.The function 1 transferred in equipment internal programmable controller simultaneously can calculate corresponding flow resistance by input value of Q1
P1；
Power supply is opened, designated value 2 is set the voltage to, blower starts to start work, writes down volume flowmeter reading at this time
Air quantity Q2.The function 2 transferred in equipment internal programmable controller simultaneously can calculate corresponding flow resistance by input value of Q2
P2；
It is repeated in above-mentioned process, will obtain the flow resistance curve for corresponding P, Q value carrying out numerical fitting you can get it equipment.
Electronic equipment carries out usually requiring wind quantity test instrument test air quantity when flow resistance test and inclined-tube manometer measurement enters
One's intention as revealed in what one says pressure, it is more time-consuming, a kind of cold flow resistance tester of Portable wind is now designed, air quantity and wind pressure can be achieved visual
Change, can quickly carry out flow resistance test.
In conclusion protected mode is that the cold flow resistance tester working principle of Portable wind and internal structure form.Protection reason
By can quickly to carry out flow resistance test to electronic equipment, while influence of the different air quantity to equipment can be investigated in commissioning device.
Claims (4)
1. a kind of air-cooled flow resistance test method, which is characterized in that the described method includes:
Air-cooled flow resistance tester is passed through into equipment under test in piping connection；
By the voltage setting of the air-cooled flow resistance tester to operating voltage；
The blower of the air-cooled flow resistance tester is started to work, and at least three air quantity Q are obtained；
The blower function transferred in the programmable controller of the air-cooled flow resistance tester；
According to the blower function and at least three air quantity Q, corresponding at least three flow resistances P is calculated；
By obtaining the flow resistance curve of equipment under test at least three air quantity Q and corresponding at least three flow resistances P fitting.
2. the method according to claim 1, wherein after the flow resistance curve for obtaining equipment under test, side
Method further include:
The flow resistance curve is shown.
3. the method according to claim 1, wherein
It is described if the sectional area of the air outlet of the air-cooled flow resistance tester and equipment under test air intake vent differs by more than preset value
Flow resistance P is adjusted according to the pressure drop coefficient of actual measurement.
4. a kind of air-cooled flow resistance test device, which is characterized in that described device includes: power supply (1), adjustable air volume blower (2), body
Product flowmeter (3), water flow collection device (4), flow display device (5), programmable controller (6) and flow resistance display device (7),
In:
The power supply (1) links together with the adjustable air volume blower (2), and the volume flowmeter (3) is arranged in wind adjustable
It measures on blower (2) air-out direction；
The water flow collection device (4) is for acquiring air quantity Q；
The flow display device (5) inputs the programmable controller (6) for showing the air quantity Q, while by air quantity Q；
The programmable controller (6) is for calculating flow resistance P；
The flow resistance display device (7) is for showing flow resistance P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572286.5A CN109387351B (en) | 2018-12-21 | 2018-12-21 | Air cooling flow resistance testing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572286.5A CN109387351B (en) | 2018-12-21 | 2018-12-21 | Air cooling flow resistance testing method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109387351A true CN109387351A (en) | 2019-02-26 |
| CN109387351B CN109387351B (en) | 2020-09-22 |
Family
ID=65430805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811572286.5A Active CN109387351B (en) | 2018-12-21 | 2018-12-21 | Air cooling flow resistance testing method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109387351B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285723A (en) * | 1988-09-22 | 1990-03-27 | Hitachi Ltd | Hot film type air flow meter |
| CN101750470A (en) * | 2008-12-17 | 2010-06-23 | 中国石油天然气股份有限公司 | Natural gas line drag reducer capability test device |
| CN102539110A (en) * | 2010-12-20 | 2012-07-04 | 西安开容电子技术有限责任公司 | Wind resistance character testing device and design method thereof |
| CN202485726U (en) * | 2011-12-24 | 2012-10-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Pipeline flow measuring system applied in closed oil tank |
| CN102722623A (en) * | 2012-06-08 | 2012-10-10 | 中国航空工业集团公司西安飞机设计研究所 | Method for metering air volume of airplane air cooling generator |
| CN102735416A (en) * | 2012-06-28 | 2012-10-17 | 浪潮电子信息产业股份有限公司 | Method for testing pressure-flow (P-Q) performance and flow resistance performance of high-flow large-size system |
| DE102016008973A1 (en) * | 2016-07-22 | 2018-01-25 | Gerd Halbeis | Wind indicator as wind vane with integrated speedometer |
-
2018
- 2018-12-21 CN CN201811572286.5A patent/CN109387351B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0285723A (en) * | 1988-09-22 | 1990-03-27 | Hitachi Ltd | Hot film type air flow meter |
| CN101750470A (en) * | 2008-12-17 | 2010-06-23 | 中国石油天然气股份有限公司 | Natural gas line drag reducer capability test device |
| CN102539110A (en) * | 2010-12-20 | 2012-07-04 | 西安开容电子技术有限责任公司 | Wind resistance character testing device and design method thereof |
| CN202485726U (en) * | 2011-12-24 | 2012-10-10 | 中国航空工业集团公司沈阳飞机设计研究所 | Pipeline flow measuring system applied in closed oil tank |
| CN102722623A (en) * | 2012-06-08 | 2012-10-10 | 中国航空工业集团公司西安飞机设计研究所 | Method for metering air volume of airplane air cooling generator |
| CN102735416A (en) * | 2012-06-28 | 2012-10-17 | 浪潮电子信息产业股份有限公司 | Method for testing pressure-flow (P-Q) performance and flow resistance performance of high-flow large-size system |
| DE102016008973A1 (en) * | 2016-07-22 | 2018-01-25 | Gerd Halbeis | Wind indicator as wind vane with integrated speedometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109387351B (en) | 2020-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9556798B2 (en) | Systems and methods for measuring a flow profile in a turbine engine flow path | |
| CN102027348B (en) | Efficiency monitoring of a compressor | |
| CN110472311B (en) | High-pressure compressor performance evaluation method for variable-cycle core compression system | |
| CN110082086A (en) | The test platform and test method of hydrogen fuel cell air feed equipment | |
| US20140208755A1 (en) | Gas Turbine Air Mass Flow Measuring System and Methods for Measuring Air Mass Flow in a Gas Turbine Inlet Duct | |
| CN205307649U (en) | Breathing mask performance detector | |
| CN107423477A (en) | air conditioner compressor simulation method and system | |
| CN106050418A (en) | Waste gas recycling system of gas turbine and work method of waste gas recycling system | |
| CN103364214B (en) | Motor cooling simulation test bed and motor cooling simulation method | |
| CN111502972A (en) | Testing device for fuel cell air system | |
| CN109387351A (en) | A kind of air-cooled flow resistance test method and device | |
| Azem et al. | Efficiency increase of free running centrifugal fans through a pressure regain unit used in an air handling unit | |
| Yin | Characterizing airflow and power of VAV series fan-powered terminal units from component data-Part II | |
| CN206710036U (en) | For the equipment for the air-tightness for detecting aircraft air condition pipeline | |
| CN108001709A (en) | A kind of aircraft secondary power systems air inlet measuring device | |
| US10900492B2 (en) | Method of anti-surge protection for a dynamic compressor using a surge parameter | |
| DE102014000825B4 (en) | Method for simulating operating states of an air conditioning device and a ventilation system of a vehicle air conditioning system | |
| CN109520573A (en) | A kind of automobile HVAC air quantity accuracy test method | |
| CN101710032A (en) | Testing device for cabinet air conditioner | |
| CN105783211B (en) | Air conditioner and its control method | |
| CN106338407B (en) | A kind of detection method of traction electric machine cooling system parameter | |
| Stuart et al. | An Evaluation of Vaneless Diffuser Modelling Methods as a Means of Improving the Off-Design Performance Prediction of Centrifugal Compressors | |
| CN206681876U (en) | A kind of engine charge air-conditioning | |
| CN112857703A (en) | Active air inlet grille sealing performance test system | |
| EP3623291A1 (en) | Adaptable dual delta-p flow measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |