CN106644494B - A kind of method and apparatus for evaluating combustion engine turbine air intake filtration device anti humility performance - Google Patents
A kind of method and apparatus for evaluating combustion engine turbine air intake filtration device anti humility performance Download PDFInfo
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- CN106644494B CN106644494B CN201610991571.5A CN201610991571A CN106644494B CN 106644494 B CN106644494 B CN 106644494B CN 201610991571 A CN201610991571 A CN 201610991571A CN 106644494 B CN106644494 B CN 106644494B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
Abstract
The invention discloses a kind of method and apparatus for evaluating combustion engine turbine air intake filtration device anti humility performance, the air after humidification is passed through into air intake filter in evaluation method, measures air intake filter resistance Δ P, then resistance Δ P is modified to Δ P according to formula 11.203, according to air intake filter Δ P within a certain period of time1.203Changing value or Δ P1.203Reach the time of certain numerical value experience to air intake filter divided rank, evaluates air intake filter anti humility performance.Method provided by the invention belongs to propose for the first time at home and in the world, start with from filter itself, quantify the process that changes with time when filter resistance is coerced by highly humid air, carry out the superiority and inferiority of ratings filter anti humility performance with this, this method is suitable for the evaluation of general ventilation filter, all has great importance to the production for solving " wet stifled " problem, specification air filter manufacturing firm that combustion engine air intake filter faces.
Description
Technical field
The present invention relates to gas turbine air induction system field, the rotation using general ventilation filter can extend to
A kind of fields such as machinery, HVAC, and in particular to method and apparatus for evaluating combustion engine turbine air intake filtration device anti humility performance.
Background technique
Tradition evaluates the method for general ventilation filter and according to essentially according to GB14295 (air filter), EN779
(measurement of general ventilation filter-strainability), ASHRAE52.2 are (according to the general ventilation filter of the efficiency test of granular size
The method of device) and the standards such as ISO29461-1-2013 (measurement of general ventilation filter-strainability), with filter paper technology
With the progress of production technology, the evaluation methods such as resistance, efficiency and dust containing capacity can no longer meet the reality of production in traditional standard
It needs, especially when filter uses in the environment of higher levels of humidity.
Combustion engine air intake filtration device enters unique one of defence line of combustion engine as outside air, to combustion engine safe operation and
Working efficiency has very important influence.China's ground combustion machine is mainly distributed on along oil-gas pipeline and Beijing-Tianjin, the Yangtze River Delta,
The phenomenon that areas such as Pearl River Delta, the generally existing chance wet weather resistance of inlet air filter system sharply increases, combustion engine is caused to be forced
Load down operation is shut down.
The reason is that missing filter anti humility performance is evaluated all the time method and standard, lead to needle of having no idea
Evaluate high humidity environment or select the preferable filter of anti humility performance.When the poor filter of anti humility performance in low temperature season and
When high humidity weather is run, liquid water is precipitated in liquid droplet and throttle effect due to high-speed flow through being blocked when filter
Comprehensive function causes the filter differential pressure short time to be sharply increased, and seriously affects unit safety economical operation.
No matter the evaluation method of filter anti humility performance is international or at home belong to blank, therefore the method for this patent
All have to the production for solving " wet stifled " problem, specification air filter manufacturing firm that combustion engine air intake filter faces important
Meaning.
Summary of the invention
For the missing of existing filter detection technique and evaluation criterion, an object of the present disclosure is to provide one kind can
The method for evaluating combustion engine inlet air filter anti humility performance, starts with from filter itself, and quantization filter resistance is by high humidity sky
Change with time process when gas stress, and the superiority and inferiority of ratings filter anti humility performance is carried out with this；
The present invention second is designed to provide a kind of device for evaluating combustion engine turbine air intake filtration device anti humility performance.
Above-mentioned purpose is achieved by the following technical solution:
A method of evaluation combustion engine turbine air intake filtration device anti humility performance: humidifying air is continued through to be tested
Air intake filter, the pressure difference of the real time measure filter air inlet side to be determined and gas side out, i.e., filter intake resistance to be tested
Δ P, then resistance Δ P is modified to Δ P according to formula 11.203, according to air intake filter Δ P within the set time1.203Variation
Value or Δ P1.203Reach the time of setting numerical value experience to air intake filter divided rank, evaluates air intake filter anti humility performance；
Formula 1 is as follows:
Wherein, ρ1.203=1.203kg/m3, u1.203=17.853 × 10-6Pas, ρ and u are respectively according to formula 2 and formula
3 calculate:
Wherein, pvIt is calculated according to formula 4:
Wherein,For the relative humidity of humidifying air, psIt is calculated according to formula 5:
Wherein, the t in formula 2,3,5 and p represents the temperature and pressure of humidifying air；
The calculation method of n in 1 index of above-mentioned formula are as follows: measure the volume of air flow q of air intake filter inletvWith into
Air filter resistance Δ P, according to formula Δ p=c (qv)n, c=k × u2-n×ρn-1, acquired with least square method；Wherein, k is normal
Number.
Further, relative humidity isHumidifying air be by relative humidityNon- humidifying air humidification and obtain,
Humidification amount mlIt is calculated and is determined by formula 6:
ml=qvρ0(d-d0) (formula 6)
Wherein, qvFor the volume flow of non-humidifying air, d0It is respectively the water capacity of non-humidifying air and humidifying air with d,
It passes sequentially through formula 7 and formula 8 is calculated；ρ0For the density of non-humidifying air, it is calculated by formula 9；
Wherein,ps0And psIt is calculated by formula 10 and formula 11:
Wherein, the p in formula 7,8,90The pressure of non-humidifying air and humidifying air is respectively represented with p；Formula 10 and public affairs
T in formula 110The temperature of non-humidifying air and humidifying air is respectively represented with t.
Further, the relative humidity of humidifying airGreater than 95%.
Setting time is preferably 0.5-10 hours, and setting analog value can also be required according to actual standard；The setting number
Value is preferably 200-800Pa, and setting respective value can also be required according to actual standard.
A kind of device for evaluating combustion engine turbine air intake filtration device anti humility performance: pre- including atmosphere inlet plenum, humid air
Mixed room, filter pipeline section, flowmeter and blower to be measured；It is disposed with pressure, temperature-humidity sensor in the atmosphere inlet plenum,
It is connected between atmosphere inlet plenum and humid air premixer by pipeline, is equipped in pipeline and is added by the atmosphere that multiple atomizers form
Wet device；The filter pipeline section to be measured is connected with humid air premixer, and inside is disposed with filter to be measured, before filter to be measured
It is respectively disposed with pressure, temperature-humidity sensor later；Flowmeter is equipped in pipeline after the filter pipeline section to be measured
And blower.
Further, the air inlet face of the atmosphere inlet plenum is disposed with filter.
Further, primary-air recirculating system is disposed in the atmosphere inlet plenum.
Further, the atmosphere humidifier is connected with PID controller.
Further, the arranged direction of atomizer is contrary with Atmospheric Flow.
Further, the filter pipeline section to be measured is equipped with observation window.
Further, the blower is axial flow blower.
Beneficial effects of the present invention:
1, method provided by the invention belongs to propose for the first time at home and in the world, starts with from filter itself, measures
Change the process that changes with time when filter resistance is coerced by highly humid air, the superiority and inferiority of ratings filter anti humility performance carried out with this,
This method is suitable for the evaluation of general ventilation filter, and to solving, " wet stifled " problem, specification that combustion engine air intake filter faces are empty
The production of air filter manufacturing firm all has great importance；
2, device provided by the invention selects horizontal system, connection and reasonable arrangement, it is ensured that and water mist is sufficiently quickly mixed with air,
It is reliably used for research evaluation combustion engine turbine air intake filtration device anti humility performance.
Detailed description of the invention
Fig. 1 is the logic diagram of evaluation method of the present invention；
Fig. 2 is the structural schematic diagram of evaluating apparatus of the present invention；
Fig. 3 is anti humility performance change curve；
In Fig. 2,1- air inlet face (arrangement high efficiency particulate air filter)；2- atmosphere inlet plenum (can contain primary-air recirculating system)；3- atmosphere
Pressure, temperature-humidity sensor；4- atomizer；5-PID controller；6- humid air premixer；It is pressure before 7- is filtered, temperature, wet
Spend sensor；8- filter pipeline section to be measured；9- observation window；Pressure, temperature-humidity sensor after 10- filter；11- flowmeter；12-
Axial flow blower.
Specific embodiment
Technical solution of the present invention is specifically introduced with reference to the accompanying drawing.
A method of the air after humidification evaluation combustion engine turbine air intake filtration device anti humility performance: being passed through into air inlet
Filter measures air intake filter resistance Δ P, then resistance Δ P is modified to Δ P according to formula 11.203, existed according to air intake filter
Δ P in certain time1.203Changing value or Δ P1.203Reach the time of certain numerical value experience to air intake filter divided rank,
Evaluate air intake filter anti humility performance.It tests institute's measured data and presses standard air density 1.203kg/m3It is modified, this density pair
Answer the humidified density reached under saturation state of the atmosphere of standard state.Verification experimental verification, atmospheric density is in 1.16kg/m3~
1.24kg/m3Between when be not required to correct.
Formula 1 is as follows:
Wherein, ρ1.203=1.203kg/m3, u1.203=17.853 × 10-6Pas, ρ are temperature t (DEG C), atmospheric pressure p
(Pa) and relative humidityUnder atmospheric density (kg/m3), it is calculated according to formula 2；U is that the power under temperature t (DEG C) is viscous
It spends (Pas), is calculated according to formula 3:
Wherein, pvFor the steam partial pressure in air, calculated according to formula 4:
Wherein,For the relative humidity of humidifying air；
ps(Pa) be air themperature t (DEG C) when saturated vapor pressure, according to formula 5 calculate:
Wherein, the t in formula 2,3,5 and p represents the temperature and pressure of humidifying air；
The calculation method of n in 1 index of above-mentioned formula are as follows: measure the volume of air flow q of air intake filter inletvIt is (single
Position m3/ s) and air intake filter resistance Δ P (unit Pa), according to formula Δ p=c (qv)n, c=k × u2-n×ρn-1, with minimum two
Multiplication acquires；Wherein, k is constant；μ is aerodynamic force viscosity (unit Pas)；ρ is atmospheric density (units/kg/m3)。
Least square method calculation method is well known calculation method, is simply described below:
Former formula is power function
Logarithm is taken to obtain:
Ln Δ p=lnk+ (2-n) lnu+ (n-1) ln ρ+nlnqv
Ln Δ p-2lnu+ln ρ=lnk+n (lnqv+lnρ-lnu)
At a temperature of various inlet, Δ p, u, ρ and q can be obtainedvTest data；
It can determine simplified linear fit function:
And then n value is acquired by least square solution.
Further, relative humidity isHumidifying air be by relative humidityNon- humidifying air humidification and obtain,
Humidification amount mlIt is calculated and is determined by formula 6:
ml=qvρ0(d-d0) (formula 6)
Wherein, qvFor the volume flow of non-humidifying air, d0It is respectively the water capacity of non-humidifying air and humidifying air with d,
It passes sequentially through formula 7 and formula 8 is calculated；ρ0For the density of non-humidifying air, it is calculated by formula 9；
Wherein,ps0And psIt is calculated by formula 10 and formula 11:
Wherein, the p in formula 7,8,90The pressure of non-humidifying air and humidifying air is respectively represented with p；Formula 10 and public affairs
T in formula 110The temperature of non-humidifying air and humidifying air is respectively represented with t.
A kind of device for evaluating combustion engine turbine air intake filtration device anti humility performance, as shown in Fig. 2, including atmosphere air inlet
Room, humid air premixer, filter pipeline section, flowmeter and blower to be measured；Be disposed in the atmosphere inlet plenum pressure, temperature,
Humidity sensor is connected between atmosphere inlet plenum and humid air premixer by pipeline, is equipped in pipeline by multiple atomizers
The atmosphere humidifier of composition；The filter pipeline section to be measured is connected with humid air premixer, and inside is disposed with filter to be measured, to
Pressure, temperature-humidity sensor are respectively disposed with before and after surveying filter；Pipeline after the filter pipeline section to be measured
It is interior to be equipped with flowmeter and blower.Wherein, the air inlet face of the atmosphere inlet plenum is disposed with filter；Cloth in the atmosphere inlet plenum
It is equipped with primary-air recirculating system；The atmosphere humidifier is connected with PID controller；The arranged direction of atomizer and Atmospheric Flow side
To opposite；The filter pipeline section to be measured is equipped with observation window；The blower is axial flow blower.
Evaluate dynamic high-medium efficient filter case study on implementation:
Using horizontal test bed of the present invention, filter A to be evaluated is horizontal positioned.Indoor intake air temperature is 20 DEG C,
Relative humidity is 65%, sets vent flow as 3400m3/ h, preset air state are 100% relative humidity saturation state.
As device humidification amount according to needed for calculating inlet air temperature and humidity and controls target gas state, by above-mentioned public affairs
It is 6.85kg/h that formula, which calculates humidification amount, so that inlet air relative humidity reaches 100%.Anti humility performance change curve such as Fig. 3, mistake
Filter A initial differential pressure is 120Pa, and pressure difference after three hour humid air is undergone to be gradually increased to 320Pa.
Dynamic high-medium efficient filter evaluation index (EF) as shown in table 1, according to EF=f (Δ p, ml, T), ml=6.85kg/h
When, further setting three hours pressure difference variation numerical value EF0, EF1, EF2 150Pa, 300Pa and 500Pa third gear, (this is through excessive
Amount test, recommends numerical value).Such as reach 500Pa lower than three hours, then according to reach 500Pa time stepping (time and resistance,
Subject to first comer).Three hours pressure differences increase 200Pa in the moisture-resistant test of filter A, are according to recommendation evaluation index moisture-resistant grade
EF1, anti humility performance are excellent in similar product.
1 dynamic high-medium efficient filter evaluation index (m of tablel=6.85kg/h, RH=100%)
| Grade | Three hours pressure difference changing values (Pa) | Change 500Pa time (h) | Evaluation |
| EF0 | Less than 150 | Excellent+ | |
| EF1 | Less than 300 | It is excellent | |
| EF2 | Less than 500 | Excellent- | |
| EF3 | N/A | 2h≤T<3h | Good+ |
| EF4 | N/A | 1h≤T<2h | It is good |
| EF5 | N/A | 0.5h≤T<1h | Good- |
| EF6 | N/A | <0.5h | Difference |
It to sum up, include following four steps in practical application of the present invention, logic is as shown in Figure 1:
Step 1, the test device of this method is determined.General ventilation filter in domestic and international relevant criterion mentioned above
Property test platform be horizontally disposed experimental rig.Equally power generation with gas-turbine gas handling system mostly uses choosing at home
With horizontal system, the filter in gas handling system is horizontally disposed.The invention patent is with horizontally disposed testing stand to anti humility performance
Test is described, as shown in Figure 2.In testing stand mainly comprising dry air inlet plenum, atomising device, humid air premixer, to
Survey filter pipeline section and axial flow blower.A whole set of experimental rig uses negative pressure inlet.In order to guarantee that water mist is sufficiently quickly mixed with air
It closes, nozzle spray direction is opposite with dry air airflow direction.Atomising device include clean water system, high-pressure hydraulic pump, atomizer,
Sensor (3 and 7) and PID control system.Dry air room (atmosphere inlet plenum 2) can be the free air inlet of air, or setting return air system
System.6 section of humid air premixer is rectangular or flaring circular cross-section.There are several sections of square air channel pipeline sections, installation filtering in testing stand
The nominal internal diameter of the pipeline section (filter pipeline section 8 to be measured) of device is between 616mm~622mm.The minimum length of the pipeline section be at least to
1.1 times for surveying filter depth.On the basis of other pipeline sections are in favor of test.Duct materials are answered conduction and are grounded, and have smooth
Inner surface, and have enough intensity it is indeformable under operating pressure to guarantee.In order to observe filter and equipment, test air way
In part can use transparent glass or plastic material.
Step 2, air inlet temperature and flow are determined.The pressure of temperature and the flow effect filter to be measured of inlet air
Difference.This method presses international standard ISO8778, and selecting standard air state (ANR), (temperature is 20 DEG C, relative humidity 65%, presses
Power is density p=1.185kg/m of 0.1MPa, air3) on the basis of.Normal air is humidified reach saturation after, temperature is
15.15 DEG C, atmospheric density 1.203kg/m3.Test to humid air under different temperatures, the amendment of filter pressure difference are shown in above-mentioned
Formula.
The charge flow rate of general ventilation filter is 3400m in domestic and international relevant criterion mentioned above3/h.The present invention
In to general ventilation filter charge flow rate select be 3400m3/ h, experimental result can be used as effective benefit of domestic and international relevant criterion
It fills.
Step 3, humidification amount control is carried out, high humidity environment is simulated.It include PID control humidification and mist in test device of the present invention
Makeup is set, it can be achieved that the accurate control of water mist air is taken in the biggish unsaturated humid air of relative humidity, saturated moist air and supersaturation
System, humidification amount control calculation method are shown in above-mentioned formula.The step is considered and be can satisfy anti-to filter under different humidity
The evaluation of wet performance.It is tested according to numerous studies, it is proposed that relative humidity control is greater than 95%.
Step 4, filter resistance, which changes with time, is quantified.After above three step determines, to filter sample to be measured
Product, which lead to humid air, to be tested, the variation relation curve of recording filter resistance and time.Name evaluation index is EF, then EF=
f(Δp,ml, T), wherein Δ p is pressure difference changing value, and when definition fully considers the filter efficiency of filter；mlFor humidification amount, with ring
Border temperature and humidity relationship is larger；T is the time for reaching certain resistance, and integrated filter filter efficiency can be held with this evaluation method is completed
The time received determines the reasonable value of T.The filter resistance meaning quantified that changes with time is can be used for individually to examine
The evaluation of sample can be equally used for the lateral comparison of multiple test samples.
Method provided by the invention belongs to propose for the first time at home and in the world, start with from filter itself, quantifies
Change with time process when filter resistance is coerced by highly humid air, and the superiority and inferiority of ratings filter anti humility performance is carried out with this, should
Method is suitable for the evaluation of general ventilation filter, " wet stifled " problem, specification air faced to solution combustion engine air intake filter
The production of filter manufacturing firm all has great importance；
Device provided by the invention selects horizontal system, connection and reasonable arrangement, it is ensured that water mist is sufficiently quickly mixed with air, can
Research evaluation combustion engine turbine air intake filtration device anti humility performance is used for by ground.
The effect of above-described embodiment, which is only that, illustrates essentiality content of the invention, but guarantor of the invention is not limited with this
Protect range.Those skilled in the art should understand that can modify to technical solution of the present invention or equally replace
It changes, without departing from the essence and protection scope of technical solution of the present invention.
Claims (4)
1. a kind of method for evaluating combustion engine turbine air intake filtration device anti humility performance, it is characterised in that: humidifying air is continuous
By air intake filter to be tested, the pressure difference of the real time measure filter air inlet side to be determined and gas side out, i.e., filtering to be tested
Device intake resistance Δ P, then resistance Δ P is modified to Δ P according to formula 11.203, according to air intake filter Δ within the set time
P1.203Changing value or Δ P1.203Reach the time of setting numerical value experience to air intake filter divided rank, evaluates inlet air filtration
Device anti humility performance；Formula 1 is as follows:
Wherein, ρ1.203=1.203kg/m3, u1.203=17.853 × 10-6Pas, ρ and u are counted according to formula 2 and formula 3 respectively
It calculates:
Wherein, pvIt is calculated according to formula 4:
Wherein,For the relative humidity of humidifying air, psIt is calculated according to formula 5:
Wherein, the t in formula 2,3,5 and p represents the temperature and pressure of humidifying air；
The calculation method of n in 1 index of above-mentioned formula are as follows: measure the volume of air flow q of air intake filter inletvWith air inlet
Filter Resistance Δ P, according to formula Δ p=c (qv)n, c=k × u2-n×ρn-1, acquired with least square method；Wherein, k is constant.
2. according to the method described in claim 1, relative humidity isHumidifying air be by relative humidityDo not humidify sky
Gas is humidified and is obtained, it is characterised in that: humidification amount mlIt is calculated and is determined by formula 6:
ml=qvρ0(d-d0) (formula 6)
Wherein, qvFor the volume flow of non-humidifying air, d0It is respectively the water capacity of non-humidifying air and humidifying air with d, successively
It is calculated by formula 7 and formula 8；ρ0For the density of non-humidifying air, it is calculated by formula 9；
Wherein,ps0And psIt is calculated by formula 10 and formula 11:
Wherein, the p in formula 7,8,90The pressure of non-humidifying air and humidifying air is respectively represented with p；In formula 10 and formula 11
t0The temperature of non-humidifying air and humidifying air is respectively represented with t.
3. according to the method described in claim 2, it is characterized by: the relative humidity of humidifying airGreater than 95%.
4. according to the method described in claim 1, it is characterized by: the setting time is preferably 0.5-10 hours；It is described to set
Fixed number value is preferably 200-800Pa.
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| CN108051338A (en) * | 2018-01-08 | 2018-05-18 | 佛山市顺德区阿波罗环保器材有限公司 | A kind of resistance testing and analysis system of air filter |
| CN109300564B (en) * | 2018-09-20 | 2022-11-18 | 中国辐射防护研究院 | Device and method for simulating steam blocking and corrosion of filter |
| CN113109235B (en) * | 2021-04-21 | 2023-02-14 | 中国建筑科学研究院有限公司 | System and method for testing water resistance performance of filter |
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| CN203759571U (en) * | 2014-04-03 | 2014-08-06 | 上海同圆发动机测试设备有限公司 | Engine gas intake humidification and dehumidification integrated test device |
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Address after: 210023 No. 10 Wonderland Road, Qixia District, Nanjing City, Jiangsu Province Co-patentee after: North China Electric Power University Patentee after: Guodian Nanjing electric power test & Research Co., Ltd. Address before: 210023 No. 10 Wonderland Road, Qixia District, Nanjing City, Jiangsu Province Co-patentee before: North China Electric Power University Patentee before: Nanjing Power Equipment Quality & Performance Test Center |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: 210023 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee after: Guoneng Nanjing Electric Power Test Research Co.,Ltd. Patentee after: NORTH CHINA ELECTRIC POWER University Address before: 210023 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee before: GUODIAN NANJING ELECTRIC POWER TEST RESEARCH Co.,Ltd. Patentee before: NORTH CHINA ELECTRIC POWER University |