CN105651523B - A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve - Google Patents
A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve Download PDFInfo
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- CN105651523B CN105651523B CN201511017571.7A CN201511017571A CN105651523B CN 105651523 B CN105651523 B CN 105651523B CN 201511017571 A CN201511017571 A CN 201511017571A CN 105651523 B CN105651523 B CN 105651523B
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- throttle valve
- digital ratio
- ratio equation
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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
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
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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
- G01M13/00—Testing of machine parts
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of adjustment method of test bay gas handling system digital ratio equation throttle valve, the commissioning content of the adjustment method of the test bay gas handling system digital ratio equation throttle valve includes determining flow opening curve, resolution ratio and the repeatability precision of the digital ratio equation throttle valve；The resolution ratio of the digital ratio equation throttle valve is to make flow that effective, minimum change valve opening changing value occur.Compared with prior art, the adjustment method of test bay gas handling system digital ratio equation throttle valve provided by the invention, it may be determined that valve characteristic so as to the whole performance for grasping test bay, reduces experimentation cost, improves test efficiency.
Description
Technical field
The present invention relates to a kind of adjustment methods of test bay gas handling system digital ratio equation throttle valve.
Background technology
When engine testsand is tested, it is desirable that one group of inlet condition of state point, including inlet total pressure, inlet air stream
Amount, air inlet oxygen ingredient, inlet total temperature, engine oil oil mass, while reach setting value and stablize after, record its performance and parameter
Or its performance is examined, at present, the mode that generally use adjusts related valve realizes that the inlet condition reaches setting value, therefore,
The correlated performance of valve determines the performance of entire test bay, but at present still without the adjustment method of determining valve characteristic, this
The performance of test bay can not integrally be grasped by resulting in, and so as to increase simulated time, improve experimentation cost.
Invention content
A kind of test bay air inlet system is provided the purpose of the invention is to overcome the problems of the above-mentioned prior art
The adjustment method of system digital ratio equation throttle valve.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve, the test bay gas handling system digital ratio equation throttling
The commissioning content of the adjustment method of valve includes the flow-opening curve, resolution ratio and the repeatability that determine the digital ratio equation throttle valve
Precision；The resolution ratio of the digital ratio equation throttle valve is to make flow that effective, minimum change valve opening changing value occur.
The method for determining digital ratio equation throttle flow rate-open degree characteristic curve, includes the following steps：
1), by the mass flow of digital ratio equation throttle valve only with digital ratio equation throttle valve downstream pressure and the pressure of upstream pressure
Difference, working media density, valve nominal area, valve opening are related, by formula
Determine the relationship of the mass flow of digital ratio equation throttle valve and the valve opening of digital ratio equation throttle valve；
In above-mentioned formula, qm is by the mass flow of digital ratio equation throttle valve, KbFor the valve opening of digital ratio equation throttle valve,
CVFor the valve flow coefficient of digital ratio equation throttle valve, AbFor digital ratio equation throttle valve nominal area, Δ p is digital ratio equation throttle valve
The pressure difference of downstream pressure and upstream pressure, ρbFor working media density, g is acceleration of gravity, is known constant；
2), using the valve nominal area of digital ratio equation throttle valve, working media density as constant, by digital ratio equation throttle valve valve
The pressure difference of pressure and upstream pressure is as parameter afterwards, using the valve opening of digital ratio equation throttle valve as independent variable；
3), under any operative pressure of test bay gas handling system, a digital ratio equation throttle valve downstream pressure can be generated
With the pressure difference of upstream pressure, for the pressure difference of any one digital ratio equation throttle valve downstream pressure and upstream pressure, by the digital ratio of fluid path
The valve opening of example throttle valve is from 5%, 10%, 15% ..., 90%, 95% open three times, carry out hydrojet experiment, record passes through
The mass flow of three digital ratio equation throttle valves that each valve opening is recorded is averaged by the mass flow of digital ratio equation throttle valve
Value, as the mass flow of effective digital ratio equation throttle valve, and then calculates the valve flow coefficient of digital ratio equation throttle valve, simultaneously
It is fitted flow-opening curve of digital ratio equation throttle valve.
Under different working condition, working media density is according to digital ratio equation throttle valve upstream pressure and test bay gas handling system
Air themperature is modified.
The pressure difference of the digital ratio equation throttle valve downstream pressure and upstream pressure is obtained by measuring.
The invention has the advantages that compared with prior art, test bay gas handling system digital ratio equation section provided by the invention
Flow the adjustment method of valve, it may be determined that valve characteristic so as to the whole performance for grasping test bay, reduces experimentation cost, improves examination
Test efficiency.
Specific embodiment
A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve, the test bay gas handling system digital ratio equation throttling
The commissioning content of the adjustment method of valve includes the flow-opening curve, resolution ratio and the repeatability that determine the digital ratio equation throttle valve
Precision；The resolution ratio of the digital ratio equation throttle valve is to make flow that effective, minimum change valve opening changing value occur.
The method for determining digital ratio equation throttle flow rate-open degree characteristic curve, includes the following steps：
1), by the mass flow of digital ratio equation throttle valve only with digital ratio equation throttle valve downstream pressure and the pressure of upstream pressure
Difference, working media density, valve nominal area, valve opening are related, by formula
Determine the relationship of the mass flow of digital ratio equation throttle valve and the valve opening of digital ratio equation throttle valve；
In above-mentioned formula, qm is by the mass flow of digital ratio equation throttle valve, KbFor the valve opening of digital ratio equation throttle valve,
CVFor the valve flow coefficient of digital ratio equation throttle valve, AbFor digital ratio equation throttle valve nominal area, Δ p is digital ratio equation throttle valve
The pressure difference of downstream pressure and upstream pressure, ρbFor working media density, g is acceleration of gravity, is known constant；
2), using the valve nominal area of digital ratio equation throttle valve, working media density as constant, by digital ratio equation throttle valve valve
The pressure difference of pressure and upstream pressure is as parameter afterwards, using the valve opening of digital ratio equation throttle valve as independent variable；
3), under any operative pressure of test bay gas handling system, a digital ratio equation throttle valve downstream pressure can be generated
With the pressure difference of upstream pressure, for the pressure difference of any one digital ratio equation throttle valve downstream pressure and upstream pressure, by the digital ratio of fluid path
The valve opening of example throttle valve is from 5%, 10%, 15% ..., 90%, 95% open three times, carry out hydrojet experiment, record passes through
The mass flow of three digital ratio equation throttle valves that each valve opening is recorded is averaged by the mass flow of digital ratio equation throttle valve
Value, as the mass flow of effective digital ratio equation throttle valve, and then calculates the valve flow coefficient of digital ratio equation throttle valve, simultaneously
It is fitted flow-opening curve of digital ratio equation throttle valve.
Under different working condition, working media density is according to digital ratio equation throttle valve upstream pressure and test bay gas handling system
Air themperature is modified.
The pressure difference of the digital ratio equation throttle valve downstream pressure and upstream pressure is obtained by measuring.
Finally illustrate, above example is merely to illustrate technical scheme of the present invention and unrestricted, although with reference to compared with
The present invention is described in detail in good embodiment, it will be understood by those of skill in the art that can be to the technology of the present invention
Scheme is modified and equivalent substitute, without departing from the objective and range of technical solution of the present invention, should all cover in the present invention
Right in.
Claims (1)
- A kind of 1. adjustment method of test bay gas handling system digital ratio equation throttle valve, which is characterized in that the test bay gas handling system The commissioning content of the adjustment method of digital ratio equation throttle valve includes determining flow-opening curve, the resolution of the digital ratio equation throttle valve Rate and repeatability precision；The resolution ratio of the digital ratio equation throttle valve is to make flow that effective, minimum change valve opening occur to become Change value；The method for determining digital ratio equation throttle flow rate-open degree characteristic curve, includes the following steps：1), by the mass flow of digital ratio equation throttle valve only with the pressure difference of digital ratio equation throttle valve downstream pressure and upstream pressure, work It is related to make Media density, valve nominal area, valve opening, by formulaDetermine the relationship of the mass flow of digital ratio equation throttle valve and the valve opening of digital ratio equation throttle valve；In above-mentioned formula, qmFor the mass flow by digital ratio equation throttle valve, KbFor the valve opening of digital ratio equation throttle valve, CVFor The valve flow coefficient of digital ratio equation throttle valve, AbFor digital ratio equation throttle valve nominal area, △ p is after digital ratio equation throttle valve valves The pressure difference of pressure and upstream pressure, ρbFor working media density, g is acceleration of gravity, is known constant；2) it, using the valve nominal area of digital ratio equation throttle valve, working media density as constant, will be pressed after digital ratio equation throttle valve valve The pressure difference of power and upstream pressure is as parameter, using the valve opening of digital ratio equation throttle valve as independent variable；3), under any operative pressure of test bay gas handling system, a digital ratio equation throttle valve downstream pressure and valve can be generated The pressure difference of preceding pressure, for the pressure difference of any one digital ratio equation throttle valve downstream pressure and upstream pressure, by the digital ratio equation section of fluid path Flow the valve opening of valve from 5%, 10%, 15% ..., 90%, 95% open three times, carry out hydrojet experiment, record passes through digital ratio The mass flow of example throttle valve, the mass flow of three digital ratio equation throttle valves that each valve opening is recorded is averaged, As the mass flow of effective digital ratio equation throttle valve, and then the valve flow coefficient of digital ratio equation throttle valve is calculated, intended simultaneously Close flow-opening curve of digital ratio equation throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017571.7A CN105651523B (en) | 2015-12-30 | 2015-12-30 | A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017571.7A CN105651523B (en) | 2015-12-30 | 2015-12-30 | A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve |
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| Publication Number | Publication Date |
|---|---|
| CN105651523A CN105651523A (en) | 2016-06-08 |
| CN105651523B true CN105651523B (en) | 2018-06-12 |
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| CN201511017571.7A Active CN105651523B (en) | 2015-12-30 | 2015-12-30 | A kind of adjustment method of test bay gas handling system digital ratio equation throttle valve |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106895945B (en) * | 2017-02-10 | 2019-05-24 | 中国航发沈阳发动机研究所 | A kind of aircraft engine test stand pressure instrumentataion Zero calibration apparatus and zero method of school |
| CN106908196B (en) * | 2017-02-10 | 2019-09-06 | 中国航发沈阳发动机研究所 | A kind of aircraft engine test stand pressure instrumentataion calibrating installation and calibration method |
| CN117268743B (en) * | 2023-11-22 | 2024-02-09 | 山东力威液压技术有限公司 | Fault diagnosis method for proportional flow valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162675A (en) * | 1997-08-07 | 1999-03-05 | Nissan Motor Co Ltd | Positioning control device for throttle valve |
| JP2000088131A (en) * | 1998-09-14 | 2000-03-31 | Kitz Corp | Flow rate control device for valve |
| CN103343716A (en) * | 2013-07-30 | 2013-10-09 | 潍柴动力股份有限公司 | Air inlet throttle control method and device |
| CN103499448A (en) * | 2013-10-22 | 2014-01-08 | 北京汽车股份有限公司 | Engine heat balancing performance bed tester and engine heat balancing performance bed testing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6460409B1 (en) * | 2000-05-13 | 2002-10-08 | Ford Global Technologies, Inc. | Feed-forward observer-based control for estimating cylinder air charge |
| JP4927683B2 (en) * | 2007-11-09 | 2012-05-09 | 株式会社山武 | Flow control valve |
| CN104089762B (en) * | 2014-07-04 | 2017-01-18 | 国家电网公司 | Flow characteristic test method of turbine governing valve |
-
2015
- 2015-12-30 CN CN201511017571.7A patent/CN105651523B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1162675A (en) * | 1997-08-07 | 1999-03-05 | Nissan Motor Co Ltd | Positioning control device for throttle valve |
| JP2000088131A (en) * | 1998-09-14 | 2000-03-31 | Kitz Corp | Flow rate control device for valve |
| CN103343716A (en) * | 2013-07-30 | 2013-10-09 | 潍柴动力股份有限公司 | Air inlet throttle control method and device |
| CN103499448A (en) * | 2013-10-22 | 2014-01-08 | 北京汽车股份有限公司 | Engine heat balancing performance bed tester and engine heat balancing performance bed testing method |
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| CN105651523A (en) | 2016-06-08 |
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