CN110068472A - A kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation - Google Patents
A kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation Download PDFInfo
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- CN110068472A CN110068472A CN201910396311.7A CN201910396311A CN110068472A CN 110068472 A CN110068472 A CN 110068472A CN 201910396311 A CN201910396311 A CN 201910396311A CN 110068472 A CN110068472 A CN 110068472A
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- air
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- 230000003068 static effect Effects 0.000 title claims abstract description 45
- 238000004378 air conditioning Methods 0.000 title claims abstract description 38
- 238000000691 measurement method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000005259 measurement Methods 0.000 claims description 9
- 230000007812 deficiency Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation, which comprises the following steps: choosing air outlet to be measured in compartment is region to be measured, determines the pressure tap in region to be measured；Upper air volume acquisition cover is connected at region to be measured, it is ensured that air quantity acquisition cover covers air outlet to be measured completely；During air-conditioning, the positive and negative and its size of static pressure at pressure tap is measured to judge that the influence generated to train air-conditioning outlet air performance is covered in air quantity acquisition, and then accurately measured train air conditioning system air quantity by the method for static pressure compensation.A kind of measurement method of train air conditioning system air quantity provided by the invention overcomes the deficiencies in the prior art by the method for static pressure compensation, can accurately measure vehicle air conditioner air quantity, to guarantee that the air quality of passenger train reaches requirement.
Description
Technical field
The present invention relates to a kind of measurement methods of train air conditioning system air quantity, belong to the wind of railway vehicle air conditioner system test
Measure method for accurate testing field.
Background technique
Today's society, with popularizing for air-conditioned train, especially the development of train of high-speed motor train unit, people enjoy trip
Convenience and comfort, but high request also proposed to the locating air quality of environment by bus simultaneously.Train due to its airtightness compared with
Height, air-supply and the adjusting of compartment epidemic disaster are realized by train groups air-conditioning system, therefore air conditioner system air blast air quantity is by direct shadow
Ring the thermal comfort of air in a car compartment quality and passenger.To guarantee that the air quality of passenger train reaches requirement, the railway Ministry of Public Health
Door needs to carry out general measure and inspection to passenger train carriage Performance for Air Conditioning Systems, including end air diffuser in compartment
Air output detection.Even if to guarantee the air-conditioned train compartment under the peak times such as spring transportation, summer transportation, train overcrowding's serious situation
The air output that passenger obtains still can reach standard requirements, avoid the feeling of nervous, uncomfortable in chest etc. the discomfort of passenger.
Passenger car wind quantity test standard tool is mainly air quantity shield at present.However pass through a large number of experiments in practical projects
Middle discovery, when actual air volume cover carries out air volume test at compartment air outlet, surveyed air quantity is inclined compared to design air flow
It is small.Even if measurement accuracy reaches international in detection process using U.S. TSI, SWEMA company, Sweden profession detection instrument
Standard and the measurement certification for passing through CNAS professional institution.Currently on the market without the dress for train air-conditioning air output precise measurement
Such issues that set, inquire domestic and international pertinent literature, find for solving train air conditioning system air quantity precise measurement and compensation is ground
Study carefully still in blank parts.
Summary of the invention
The purpose of the present invention is: train air measuring precision and efficiency are improved, realizes the accurate of train air conditioning system air quantity
Measurement.
In order to achieve the above object, the technical solution of the present invention is to provide a kind of train air-conditioning system based on static pressure compensation
System air quantity accurate measurement method, which comprises the following steps:
Step 1, to choose air outlet to be measured in compartment be region to be measured, determines the pressure tap in region to be measured；
Step 2 connects upper air volume acquisition cover at region to be measured, it is ensured that air quantity acquisition cover covers air outlet to be measured completely
Firmly；
Step 3, during air-conditioning, measure pressure tap at static pressure positive and negative and its size come judge air quantity acquire
Cover the influence generated to train air-conditioning outlet air performance；
Step 4 makes the static pressure of air outlet to be measured be reduced to zero by the static pressure compensation device in air quantity acquisition cover, protects
Card air-conditioning can be blown by air outlet non-resistance to be measured, and then by the method for static pressure compensation to train air conditioning system wind
Amount is accurately measured.
Preferably, in step 4, the static pressure compensation device is static pressure compensation fan, carries out wind by static pressure compensation fan
Amount compensation.
Preferably, the static pressure compensation fan is double ball bearing fan.
Preferably, the air quantity acquisition cover is SwemaFlow air quantity shield.
Preferably, in step 3, using Swema3500 pressure difference hold table measurement pressure tap at static pressure it is positive and negative and its big
It is small.
A kind of measurement method of train air conditioning system air quantity provided by the invention is overcome existing by the method for static pressure compensation
There is the deficiency of technology, vehicle air conditioner air quantity can be accurately measured, to guarantee that the air quality of passenger train reaches requirement.
Detailed description of the invention
Fig. 1 is that a kind of train air conditioning system air quantity accurate measurement method scene based on static pressure compensation provided by the invention is surveyed
Try schematic diagram；
Fig. 2 is to compensate fan layout drawing in air quantity acquisition cover in the embodiment of the present invention；
Description of symbols:
1- air quantity acquisition cover；2- pressure tap；3- air quantity display screen；4- compensates fan.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
In conjunction with Fig. 1, a kind of train air conditioning system air quantity accurate measurement method packet based on static pressure compensation provided by the invention
Include following steps:
Firstly, first selecting compartment one to run the air outlet of air-conditioning is region to be measured, windward is connected at region to be measured
Amount acquisition cover 1.In connection, guarantee that air quantity acquisition cover 1 covers air outlet completely and junction does not have gap.It is later determined that surveying
Pressure point 2 with the static pressure that measuring cell device measures air outlet is at this time 2.7pa at pressure tap 2, passes through air quantity display screen 3 and shows
Air force be 380m3/h.Air quantity acquisition cover 1 is SwemaFlow air quantity shield, and measuring cell device is hand-held for Swema3500 pressure difference
Table.
Then air quantity is judged by the positive and negative and its size of static pressure at measurement compartment air-conditioner air outlet pressure tap 2
The influence that acquisition 1 pair of train air-conditioning outlet air performance of cover generates is to connect upper air volume in exit known to 2.7pa by measuring static pressure
Acquisition cover is to make at diffuser outlet static pressure increase to the influence that train air-conditioning generates, there are resistance when leading to outlet air, from
And air output is reduced.And then train air conditioning system air quantity is accurately measured by the method for static pressure compensation, and passes through
Air quantity display screen 3 reads its accurate airflow value.
The static pressure of air-conditioner air outlet is reduced to zero by the method compensated by static pressure compensation method.When air-conditioner air outlet static pressure
Value is zero, and there is no resistances or swabbing action to influence for air-flow outlet air at this time, it is ensured that air-conditioning can be blown with non-resistance.From
And its true air output size can be measured by air quantity acquisition cover 1.Fixed compensation fan 4 is installed simultaneously in air quantity acquisition cover 1
It controls it and carries out air quantity compensation.Wherein compensation fan 4 can adjust its air force by control device.It is double for compensating fan 4
Ball bearing fan.It adjusts air quantity of fan and static pressure at pressure tap is reduced to zero, air quantity display screen 3 shows air force at this time
For 450m3/ h is the exact value of region air-supply air quantity to be measured.Arrangement is referring to figure two in detail.
Static pressure compensation method in the present invention is intended to make Optimal improvements to existing train air conditioning system air measuring,
On the basis of traditional air quantity shield test, the static pressure of air-conditioner air outlet is reduced to zero by way of compensating air outlet static pressure,
To guarantee that air-conditioning non-resistance is blown, to measure the exact value of train air-conditioning air output.On this basis, railroad
Compartment air conditioning exhausting amount size can be adjusted accordingly to guarantee that the air quality of passenger train reaches requirement.
Claims (5)
1. a kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation, which comprises the following steps:
Step 1, to choose air outlet to be measured in compartment be region to be measured, determines the pressure tap in region to be measured；
Step 2 connects upper air volume acquisition cover at region to be measured, it is ensured that air quantity acquisition cover covers air outlet to be measured completely；
Step 3, during air-conditioning, measure pressure tap at static pressure positive and negative and its size come judge air quantity acquisition cover pair
The influence that train air-conditioning outlet air performance generates；
Step 4 makes the static pressure of air outlet to be measured be reduced to zero by the static pressure compensation device in air quantity acquisition cover, guarantees empty
Tune can be blown by air outlet non-resistance to be measured, so by the method for static pressure compensation to train air conditioning system air quantity into
The accurate measurement of row.
2. a kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation as described in claim 1, feature
It is, in step 4, the static pressure compensation device is static pressure compensation fan, carries out air quantity compensation by static pressure compensation fan.
3. a kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation as claimed in claim 2, feature
It is, the static pressure compensation fan is double ball bearing fan.
4. a kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation as described in claim 1, feature
It is, the air quantity acquisition cover is SwemaFlow air quantity shield.
5. a kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation as described in claim 1, feature
It is, in step 3, the positive and negative and its size of static pressure at table measurement pressure tap is held using Swema3500 pressure difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396311.7A CN110068472A (en) | 2019-05-14 | 2019-05-14 | A kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396311.7A CN110068472A (en) | 2019-05-14 | 2019-05-14 | A kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110068472A true CN110068472A (en) | 2019-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910396311.7A Pending CN110068472A (en) | 2019-05-14 | 2019-05-14 | A kind of train air conditioning system air quantity accurate measurement method based on static pressure compensation |
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| CN (1) | CN110068472A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780825A (en) * | 2020-07-01 | 2020-10-16 | 王学义 | Air conditioner refrigeration air output testing device and using method thereof |
| CN112963953A (en) * | 2021-03-23 | 2021-06-15 | 杭州职业技术学院 | Air conditioner installation and debugging simulation regulator |
| CN113587410A (en) * | 2021-07-13 | 2021-11-02 | 无锡地铁集团有限公司 | Air quantity measuring device, subway air conditioning system and control method |
| CN115048839A (en) * | 2022-06-17 | 2022-09-13 | 重庆长安汽车股份有限公司 | Device and method for testing area of outlet of pressure release valve |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203215815U (en) * | 2013-04-25 | 2013-09-25 | 中山华帝燃具股份有限公司 | Range hood air volume and air pressure compensation system based on variable frequency motor |
| CN108318096A (en) * | 2018-03-29 | 2018-07-24 | 上海市建筑科学研究院 | A kind of power type back pressure compensation device suitable for air quantity shield |
-
2019
- 2019-05-14 CN CN201910396311.7A patent/CN110068472A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203215815U (en) * | 2013-04-25 | 2013-09-25 | 中山华帝燃具股份有限公司 | Range hood air volume and air pressure compensation system based on variable frequency motor |
| CN108318096A (en) * | 2018-03-29 | 2018-07-24 | 上海市建筑科学研究院 | A kind of power type back pressure compensation device suitable for air quantity shield |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780825A (en) * | 2020-07-01 | 2020-10-16 | 王学义 | Air conditioner refrigeration air output testing device and using method thereof |
| CN111780825B (en) * | 2020-07-01 | 2022-05-31 | 佛山市鑫银康工程技术有限公司 | Air conditioner refrigeration air output testing device and using method thereof |
| CN112963953A (en) * | 2021-03-23 | 2021-06-15 | 杭州职业技术学院 | Air conditioner installation and debugging simulation regulator |
| CN112963953B (en) * | 2021-03-23 | 2022-03-18 | 杭州职业技术学院 | Air conditioner installation and debugging simulation regulator |
| CN113587410A (en) * | 2021-07-13 | 2021-11-02 | 无锡地铁集团有限公司 | Air quantity measuring device, subway air conditioning system and control method |
| CN113587410B (en) * | 2021-07-13 | 2022-11-18 | 无锡地铁集团有限公司 | Air quantity measuring device, subway air conditioning system and control method |
| CN115048839A (en) * | 2022-06-17 | 2022-09-13 | 重庆长安汽车股份有限公司 | Device and method for testing area of outlet of pressure release valve |
| CN115048839B (en) * | 2022-06-17 | 2024-03-29 | 重庆长安汽车股份有限公司 | Device and method for testing outlet area of pressure relief valve |
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