CN108151978A - A kind of air-conditioning duct air-tightness rapid detection method - Google Patents
A kind of air-conditioning duct air-tightness rapid detection method Download PDFInfo
- Publication number
- CN108151978A CN108151978A CN201711266509.0A CN201711266509A CN108151978A CN 108151978 A CN108151978 A CN 108151978A CN 201711266509 A CN201711266509 A CN 201711266509A CN 108151978 A CN108151978 A CN 108151978A
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- China
- Prior art keywords
- air
- pipeline fitting
- detection method
- conditioning duct
- phenolphthalein
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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
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/22—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
Abstract
The present invention relates to air-leakage test technical field, especially a kind of air-conditioning duct air-tightness rapid detection method includes the following steps：S1, surface cleaning；S2, eye-observation；S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one, be filled with alkaline mixed gas into pipeline fitting by inflating port, later shut inflating port；S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, a certain amount of phenolphthalein is added in a period of time backward sink, observes color change, water color is unchanged to be judged as good seal, and water color becomes red or light red, judges there is leakage；S5, leak is found.The present invention is by eye-observation and phenolphthalein is coordinated to judge the display effect of alkaline solution, has the advantages that speed is fast, error is small, at low cost.
Description
Technical field
The present invention relates to air-leakage test technical field more particularly to a kind of air-conditioning duct air-tightness rapid detection methods.
Background technology
Air-conditioning, that is, air regulator (AirConditioner).Refer to manually means, it is empty to environment in building/structures
The process that the parameters such as temperature, humidity, cleanliness factor, the speed of gas are adjusted and control.Low-temperature receiver/heat resource equipment is generally comprised, it is cold
The several majors such as thermal medium distributing system, end equipment and other ancillary equipments.Mainly include water pump, wind turbine and pipe-line system.
End equipment then be responsible for using transmission ＆ distribution come cold and hot amount, specifically handle air, temperature, make target environment air parameter reach want
It asks.
Air-tightness is the important indicator of air-conditioning quality, and pipeline leakage can cause coolant quantity to decline, so as to directly result in air-conditioning
Refrigerating efficiency it is low, air-leakage test is always the emphasis in pipeline fitting production process in air-conditioning thus, in the prior art one
As using draught head method, halogen detection method and water inspection valve, draught head method and halogen detection method somewhat expensive and detection cycle compared with
It is long, significantly improve production cost, be not suitable for high-volume and check, water inspection method relies primarily on eye-observation, easily occur erroneous judgement and
And detection speed is slow, is not suitable for checking smaller leak.
Invention content
The purpose of the present invention is to solve shortcoming in the prior art, and a kind of air-conditioning duct air-tightness proposed
Rapid detection method.
To achieve these goals, present invention employs following technical solutions：
A kind of air-conditioning duct air-tightness rapid detection method is designed, is included the following steps：
S1, surface cleaning；
S2, eye-observation：Significantly at deformation, blue light flashlight photograph may be used at visual observation welding junction and surface
It penetrates look-out station and carries out auxiliary judgment, so as to help quickly to look for position of the pipeline fitting there may be leakage；
S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one,
Alkaline mixed gas is filled with into pipeline fitting by inflating port, later shuts inflating port；
S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, is added in a period of time backward sink
A certain amount of phenolphthalein observes color change, and water color is unchanged to be judged as good seal, and water color becomes red or light red, judges
There are leakages；
S5, leak is found.
Preferably, surface cleaning is as follows：The brass component surface being completed using citric acid to welding
It is cleaned, mainly for line connection nigrescence and the position of generation verdigris, is advisable with copper pipe surface without coarse sense of touch.
Preferably, the volume ratio of mixed gas of the alkaline mixed gas for nitrogen and ammonia, nitrogen and ammonia is 3-5: 1,
It is filled with gas pressure intensity and maintains 5-10Mpa.
Preferably, it submerges in detection process, Immersion time 10-15min, the amount of phenolphthalein is 10-20g.
Preferably, leak is found to be as follows：The pipeline fitting that previous step judges leakage is taken out, using being mixed with
The water wiping pipeline surface of phenolphthalein, by the searching to the position that changes colour, further determines that the position of leak.
A kind of air-conditioning duct air-tightness rapid detection method proposed by the present invention, advantageous effect are：The present invention passes through people
Eye is observed and phenolphthalein is coordinated to judge the display effect of alkaline solution, has the advantages that speed is fast, error is small, at low cost.
Specific embodiment
The technical solution in the embodiment of the present invention is clearly and completely described below, it is clear that described embodiment
Only part of the embodiment of the present invention, instead of all the embodiments.
Embodiment 1
A kind of air-conditioning duct air-tightness rapid detection method, includes the following steps：
S1, surface cleaning；
S2, eye-observation：Significantly at deformation, blue light flashlight photograph may be used at visual observation welding junction and surface
It penetrates look-out station and carries out auxiliary judgment, so as to help quickly to look for position of the pipeline fitting there may be leakage；
S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one,
Alkaline mixed gas is filled with into pipeline fitting by inflating port, later shuts inflating port；
S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, is added in a period of time backward sink
A certain amount of phenolphthalein observes color change, and water color is unchanged to be judged as good seal, and water color becomes red or light red, judges
There are leakages；
S5, leak is found.
Surface cleaning is as follows：The brass component surface that welding is completed is carried out using citric acid clear
It is clean, mainly for line connection nigrescence and the position of generation verdigris, it is advisable with copper pipe surface without coarse sense of touch.
The volume ratio of mixed gas of the alkaline mixed gas for nitrogen and ammonia, nitrogen and ammonia is 3: 1, is filled with gas pressure
Maintain 5Mpa by force.
It submerges in detection process, Immersion time 10min, the amount of phenolphthalein is 10g.
Leak is found to be as follows：The pipeline fitting that previous step judges leakage is taken out, using being mixed with phenolphthalein
Water wiping pipeline surface by the searching to the position that changes colour, further determines that the position of leak.
Embodiment 2
A kind of air-conditioning duct air-tightness rapid detection method, includes the following steps：
S1, surface cleaning；
S2, eye-observation：Significantly at deformation, blue light flashlight photograph may be used at visual observation welding junction and surface
It penetrates look-out station and carries out auxiliary judgment, so as to help quickly to look for position of the pipeline fitting there may be leakage；
S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one,
Alkaline mixed gas is filled with into pipeline fitting by inflating port, later shuts inflating port；
S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, is added in a period of time backward sink
A certain amount of phenolphthalein observes color change, and water color is unchanged to be judged as good seal, and water color becomes red or light red, judges
There are leakages；
S5, leak is found.
Surface cleaning is as follows：The brass component surface that welding is completed is carried out using citric acid clear
It is clean, mainly for line connection nigrescence and the position of generation verdigris, it is advisable with copper pipe surface without coarse sense of touch.
The volume ratio of mixed gas of the alkaline mixed gas for nitrogen and ammonia, nitrogen and ammonia is 4: 1, is filled with gas pressure
Maintain 6Mpa by force.
It submerges in detection process, Immersion time 12min, the amount of phenolphthalein is 12g.
Leak is found to be as follows：The pipeline fitting that previous step judges leakage is taken out, using being mixed with phenolphthalein
Water wiping pipeline surface by the searching to the position that changes colour, further determines that the position of leak.
Embodiment 3
A kind of air-conditioning duct air-tightness rapid detection method, includes the following steps：
S1, surface cleaning；
S2, eye-observation：Significantly at deformation, blue light flashlight photograph may be used at visual observation welding junction and surface
It penetrates look-out station and carries out auxiliary judgment, so as to help quickly to look for position of the pipeline fitting there may be leakage；
S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one,
Alkaline mixed gas is filled with into pipeline fitting by inflating port, later shuts inflating port；
S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, is added in a period of time backward sink
A certain amount of phenolphthalein observes color change, and water color is unchanged to be judged as good seal, and water color becomes red or light red, judges
There are leakages；
S5, leak is found.
Surface cleaning is as follows：The brass component surface that welding is completed is carried out using citric acid clear
It is clean, mainly for line connection nigrescence and the position of generation verdigris, it is advisable with copper pipe surface without coarse sense of touch.
The volume ratio of mixed gas of the alkaline mixed gas for nitrogen and ammonia, nitrogen and ammonia is 4: 1, is filled with gas pressure
Maintain 7Mpa by force.
It submerges in detection process, Immersion time 14min, the amount of phenolphthalein is 15g.
Leak is found to be as follows：The pipeline fitting that previous step judges leakage is taken out, using being mixed with phenolphthalein
Water wiping pipeline surface by the searching to the position that changes colour, further determines that the position of leak.
Embodiment 4
A kind of air-conditioning duct air-tightness rapid detection method, includes the following steps：
S1, surface cleaning；
S2, eye-observation：Significantly at deformation, blue light flashlight photograph may be used at visual observation welding junction and surface
It penetrates look-out station and carries out auxiliary judgment, so as to help quickly to look for position of the pipeline fitting there may be leakage；
S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one,
Alkaline mixed gas is filled with into pipeline fitting by inflating port, later shuts inflating port；
S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, is added in a period of time backward sink
A certain amount of phenolphthalein observes color change, and water color is unchanged to be judged as good seal, and water color becomes red or light red, judges
There are leakages；
S5, leak is found.
Surface cleaning is as follows：The brass component surface that welding is completed is carried out using citric acid clear
It is clean, mainly for line connection nigrescence and the position of generation verdigris, it is advisable with copper pipe surface without coarse sense of touch.
The volume ratio of mixed gas of the alkaline mixed gas for nitrogen and ammonia, nitrogen and ammonia is 5: 1, is filled with gas pressure
Maintain 10Mpa by force.
It submerges in detection process, Immersion time 15min, the amount of phenolphthalein is 20g.
Leak is found to be as follows：The pipeline fitting that previous step judges leakage is taken out, using being mixed with phenolphthalein
Water wiping pipeline surface by the searching to the position that changes colour, further determines that the position of leak.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of air-conditioning duct air-tightness rapid detection method, which is characterized in that include the following steps：
S1, surface cleaning；
S2, eye-observation：At visual observation welding junction and surface significantly at deformation, may be used the irradiation of blue light flashlight and see
It examines position and carries out auxiliary judgment, so as to help quickly to look for position of the pipeline fitting there may be leakage；
S3, gas-flow closure：It is shut using plug by all blow vents of pipeline fitting are closed, only stays installation inflating port at one, pass through
Inflating port is filled with alkaline mixed gas into pipeline fitting, later shuts inflating port；
S4, submergence detection：Pipeline fitting is totally submerged in the sink for filling clear water, is added in a period of time backward sink certain
Phenolphthalein is measured, observes color change, water color is unchanged to be judged as good seal, and water color becomes red or light red, judges exist
Leakage；
S5, leak is found.
2. a kind of air-conditioning duct air-tightness rapid detection method according to claim 1, which is characterized in that surface cleaning
It is as follows：The brass component surface being completed using citric acid to welding is cleaned, and is connected mainly for pipeline
Place blacks and the position of generation verdigris, is advisable with copper pipe surface without coarse sense of touch.
3. a kind of air-conditioning duct air-tightness rapid detection method according to claim 1, it is characterised in that：Alkaline gaseous mixture
The volume ratio of mixed gas of the body for nitrogen and ammonia, nitrogen and ammonia is 3-5: 1, is filled with gas pressure intensity and maintains 5-10Mpa.
4. a kind of air-conditioning duct air-tightness rapid detection method according to claim 1, it is characterised in that：Submergence detected
Cheng Zhong, Immersion time 10-15min, the amount of phenolphthalein is 10-20g.
5. a kind of air-conditioning duct air-tightness rapid detection method according to claim 1, it is characterised in that：Find leak
It is as follows：The pipeline fitting that previous step judges leakage is taken out, pipeline surface is wiped using the water for being mixed with phenolphthalein, passes through
Searching to the position that changes colour further determines that the position of leak.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711266509.0A CN108151978A (en) | 2017-11-24 | 2017-11-24 | A kind of air-conditioning duct air-tightness rapid detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711266509.0A CN108151978A (en) | 2017-11-24 | 2017-11-24 | A kind of air-conditioning duct air-tightness rapid detection method |
Publications (1)
| Publication Number | Publication Date |
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| CN108151978A true CN108151978A (en) | 2018-06-12 |
Family
ID=62466495
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| CN201711266509.0A Pending CN108151978A (en) | 2017-11-24 | 2017-11-24 | A kind of air-conditioning duct air-tightness rapid detection method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088029A (en) * | 2017-11-24 | 2018-05-29 | 重庆赛格尔汽车配件有限公司 | A kind of leakage detection method of air-conditioning copper pipe |
| CN109374223A (en) * | 2018-12-26 | 2019-02-22 | 海宁市英德赛电子有限公司 | The method for testing tightness of connection between pipe sections in special gas conveyance conduit |
| CN109506846A (en) * | 2018-12-29 | 2019-03-22 | 重庆赛格尔汽车配件有限公司 | Bellows leaks hunting a device |
| CN109916565A (en) * | 2019-04-23 | 2019-06-21 | 杭州铭铄机电科技有限公司 | A kind of water-cooled motor shell detection device for recycling detection liquid |
| CN110514362A (en) * | 2019-08-30 | 2019-11-29 | 胡承翔 | A kind of graphene air tightness detection equipment using colour switching |
| CN112665800A (en) * | 2020-11-26 | 2021-04-16 | 中材科技(萍乡)风电叶片有限公司 | Method for searching vacuum air leakage of wind power blade |
| CN113340536A (en) * | 2021-04-14 | 2021-09-03 | 中粮融氏生物科技有限公司 | Method for searching leakage tube array of tube array heat exchanger |
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| DE3211452A1 (en) * | 1982-03-27 | 1983-09-29 | Omag Ostfriesische Maschinenbau Ag, 2970 Emden | Method of testing the imperviousness of ceramic hollow bodies, in particular concrete pipes |
| CN102384827A (en) * | 2011-11-23 | 2012-03-21 | 安徽淮化股份有限公司 | Leak detection device for U-shaped waste heat boiler pipe column |
| CN102748832A (en) * | 2012-06-07 | 2012-10-24 | 宁波奥克斯电气有限公司 | Air conditioning fault detection method |
| CN104075853A (en) * | 2013-03-26 | 2014-10-01 | 深圳市海洋王照明工程有限公司 | Waterproof air permeability valve detection method |
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| DE3211452A1 (en) * | 1982-03-27 | 1983-09-29 | Omag Ostfriesische Maschinenbau Ag, 2970 Emden | Method of testing the imperviousness of ceramic hollow bodies, in particular concrete pipes |
| CN102384827A (en) * | 2011-11-23 | 2012-03-21 | 安徽淮化股份有限公司 | Leak detection device for U-shaped waste heat boiler pipe column |
| CN102748832A (en) * | 2012-06-07 | 2012-10-24 | 宁波奥克斯电气有限公司 | Air conditioning fault detection method |
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Non-Patent Citations (1)
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108088029A (en) * | 2017-11-24 | 2018-05-29 | 重庆赛格尔汽车配件有限公司 | A kind of leakage detection method of air-conditioning copper pipe |
| CN109374223A (en) * | 2018-12-26 | 2019-02-22 | 海宁市英德赛电子有限公司 | The method for testing tightness of connection between pipe sections in special gas conveyance conduit |
| CN109506846A (en) * | 2018-12-29 | 2019-03-22 | 重庆赛格尔汽车配件有限公司 | Bellows leaks hunting a device |
| CN109916565A (en) * | 2019-04-23 | 2019-06-21 | 杭州铭铄机电科技有限公司 | A kind of water-cooled motor shell detection device for recycling detection liquid |
| CN109916565B (en) * | 2019-04-23 | 2021-05-14 | 浙江葆特电机有限公司 | Water-cooling motor shell detection equipment capable of repeatedly utilizing detection liquid |
| CN110514362A (en) * | 2019-08-30 | 2019-11-29 | 胡承翔 | A kind of graphene air tightness detection equipment using colour switching |
| CN112665800A (en) * | 2020-11-26 | 2021-04-16 | 中材科技(萍乡)风电叶片有限公司 | Method for searching vacuum air leakage of wind power blade |
| CN113340536A (en) * | 2021-04-14 | 2021-09-03 | 中粮融氏生物科技有限公司 | Method for searching leakage tube array of tube array heat exchanger |
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Application publication date: 20180612 |
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