CN108151980A - A kind of method of fluid pressure test air-tight test - Google Patents
A kind of method of fluid pressure test air-tight test Download PDFInfo
- Publication number
- CN108151980A CN108151980A CN201711444552.1A CN201711444552A CN108151980A CN 108151980 A CN108151980 A CN 108151980A CN 201711444552 A CN201711444552 A CN 201711444552A CN 108151980 A CN108151980 A CN 108151980A
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- Prior art keywords
- pressure
- fluorescent
- test
- testee
- compression pump
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Classifications
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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
- G01M3/222—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 for tubes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Proposed by the present invention is a kind of method of fluid pressure test air-tight test.It is preset by pipe fitting, tested pipe fitting both ends sealing flange plate blocks, fluorescer is added in supply flume, injects inside testee and release fluorescent liquid pressure step by fluorescent liquid through compression pump.Water pressure experiment is done instead of water using fluorescent liquid due to of the invention, as long as observation is detected whether object surface has fluorescent material it is determined that whether having leakage point, fluorescent material is easy to be identified by the human eye under black light lamp, convenient and efficient, high sensitivity, and it is detected after can realizing pressure release, securely and reliably.Suitable for the method application as a kind of fluid pressure test air-tight test.
Description
Technical field
It is proposed by the present invention be steel workpieces, pressure vessel and device water pressure experiment method, be mainly used in compared with
The water pressure air-leakage test of small workpiece and high pressure workpiece.Specifically a kind of side of fluid pressure test air-tight test
Method.
Background technology
At present, steel workpieces, pressure vessel and device generally carry out air-leakage test using the method for water pressure experiment.It presses
According to defined test specification, the water of certain pressure is injected into workpiece, pressure vessel and the device for needing to detect, it is general to protect
Pressure 30min is held, leakage point is then determined whether there is according to the state phenomena of appearance.
Judging the method for leakage point has following three kinds：
1st, water pressure variation≤0.01MPa after 30min, it is believed that be no leakage point.
2nd, detergent water is sprayed to detected surface, by having seen whether bubble generation to determine whether there is leakage point,
This way needs to keep pressure and small breakthrough is easily ignored, and sensitivity is low.
3rd, the phenomenon that pulverized limestone of white is equably smeared in detected material external surface, has seen whether moisture absorption discoloration,
This detection method is influenced by the eyes resolution capability of ambient humidity and people, equally there is the shortcomings that sensitivity is low.
Invention content
In order to overcome pressure hold time in traditional water pressure air-leakage test long low with leakage point sensitivity is judged
The shortcomings that, the present invention proposes a kind of method of fluid pressure test air-tight test.This method replaces water by fluorescent liquid
Medium is tested, leakage point can be just determined at once by fluorescent material occur in tested external surface, and rapid sensitive solves hydraulic pressure
The technical issues of air-tightness sensitivity is low.
Scheme is used by the present invention solves technical problem：
Testee includes both ends for pipe fitting and detects pipe fitting ring flange, has weld seam in ring flange inboard, and outside has Sealing Method
Blue plate, compression pump are connect by pipeline with detecting the ring flange of pipe fitting, and compression pump lower part is inserted by pipeline in supply flume.
Operating procedure：
1st, it will need to suppress to need the position suppressed to test the pipe fitting of air-tightness and be fixed in inside by liquid, with clean
Pressure flush of water testee surface, detected surface is observed under black light lamp, it is ensured that is polluted without fluorescent material, black light lamp shines
Degree >=1000uw/cm2, testee surface white light illumination≤20Lx at this time.
2nd, tested pipe fitting both ends sealing flange plate is blocked, is connect by pipeline with compression pump, the compression pump other end connects
It is connected to supply flume.
3rd, fluorescent penetrant stirring is added in supply flume as the fluorescent liquid of mixing, fluorescence intensity mass ratio is in 0.2-
Between 0.3%.
4th, fluorescent liquid is injected inside testee through compression pump, when mixing liquid pressure reaches technology required value, protected
Hold pressure 30min.
5th, fluorescent liquid pressure is released, testee surface is observed with black light light irradiation, as long as object to be detected surface is sent out
Existing fluorescent material, regardless of whether under conditions of having pressure, it will be able to conclude with the presence of leakage point.
Good effect does water pressure experiment, as long as observation is detected object using fluorescent liquid due to of the invention instead of water
Whether surface has fluorescent material it is determined that whether there is leakage point, and fluorescent material is easy to be identified by the human eye under black light lamp,
Convenient and efficient, high sensitivity, and detected after can realizing pressure release, securely and reliably.Suitable for testing gas as a kind of fluid pressure
The method application of tightness test.
Description of the drawings
Fig. 1 is test schematic diagram of the present invention.
In figure, 1. detection pipe fittings, 2. detection pipe fitting ring flanges, 3. sealing flange plates, 4. detection pipe fitting flanged joint weld seams,
5. compression pump, 6. supply flumes.
Specific embodiment
Specific embodiment：
According to the figure, testee includes both ends detection pipe fitting ring flange 2 for pipe fitting, has weld seam 4, outside in ring flange inboard
With sealing flange plate 3, compression pump 5 is connect by pipeline with detecting the ring flange of pipe fitting, and compression pump lower part is inserted by pipeline
Into supply flume 6.
Operating procedure：
1st, it will need to suppress to need the position suppressed to test the pipe fitting of air-tightness and be fixed in inside by liquid, with clean
Pressure flush of water testee surface, detected surface is observed under black light lamp, it is ensured that is polluted without fluorescent material, black light lamp shines
Degree >=1000uw/cm2, testee surface white light illumination≤20Lx at this time.
2nd, tested pipe fitting both ends sealing flange plate is blocked, is connect by pipeline with compression pump, the compression pump other end connects
It is connected to supply flume.
3rd, fluorescent penetrant stirring is added in supply flume as the fluorescent liquid of mixing, fluorescence intensity mass ratio is in 0.2-
Between 0.3%.
4th, fluorescent liquid is injected inside testee through compression pump, when mixing liquid pressure reaches 5MPa, keeps pressure
30min。
5th, fluorescent liquid pressure is released, testee surface is observed with black light light irradiation, as long as object to be detected surface is sent out
Existing fluorescent material, regardless of whether under conditions of having pressure, it will be able to conclude with the presence of leakage point.
Advantage；
Due to making water pressure test(ing) medium instead of water using fluorescent liquid, as long as observation is detected object surface and finds fluorescent material
It can be determined with leakage point immediately, fluorescent material is easy to be identified by the human eye under black light lamp, convenient and efficient, high sensitivity,
This detection can detect whether that there are leakage points in the case where releasing pressure so that the safety of the high-pressure bottle water pressure test obtains
It must ensure.
Claims (3)
- A kind of 1. method of fluid pressure test air-tight test, it is characterised in that：Testee is detection pipe fitting（1）, including Detect pipe fitting ring flange（2）, there is weld seam in ring flange inboard（4）, outside has sealing flange plate（3）, compression pump（5）Pass through Pipeline is connect with detecting the ring flange of pipe fitting, and compression pump lower part is inserted into supply flume by pipeline（6）In；1）, will need by liquid inside suppress test the workpiece, pressure vessel and device of air-tightness be fixed on needs beat Detected surface with clean pressure flush of water testee surface, is observed, it is ensured that without fluorescence in the position of pressure under black light lamp Substances Pollution；2）, by testee both ends with sealing flange plate block, connect by pipeline with compression pump, the compression pump other end is connected to Supply flume；3）, in supply flume add in fluorescent material stirring as mixing fluorescent liquid, fluorescence intensity (weight ratio) 0.2- 0.3%；4）, through compression pump by fluorescent liquid inject testee inside, when mixing liquid pressure reaches 5MPa, keep pressure 30min；5）, release fluorescent liquid pressure, with black light light irradiation observation testee surface, as long as object to be detected surface find it is glimmering Stimulative substance, regardless of whether under conditions of having pressure, it will be able to which concluding has leakage point.
- 2. a kind of method of fluid pressure test air-tight test according to claim 1, it is characterised in that：The fluorescence Material includes fluorescentmagnetic particle(powder), fluorescent penetrant and dissolving and the fluorescent powder of water.
- 3. a kind of method of fluid pressure test air-tight test according to claim 1, it is characterised in that：The black light Lamp is ultraviolet radiator, black light lamp illumination >=1000uw/cm2, testee surface white light illumination≤20Lx.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444552.1A CN108151980A (en) | 2017-12-27 | 2017-12-27 | A kind of method of fluid pressure test air-tight test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711444552.1A CN108151980A (en) | 2017-12-27 | 2017-12-27 | A kind of method of fluid pressure test air-tight test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108151980A true CN108151980A (en) | 2018-06-12 |
Family
ID=62463191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711444552.1A Pending CN108151980A (en) | 2017-12-27 | 2017-12-27 | A kind of method of fluid pressure test air-tight test |
Country Status (1)
| Country | Link |
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| CN (1) | CN108151980A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506843A (en) * | 2018-12-10 | 2019-03-22 | 上海交通大学 | Mating surface leakage region measuring system and method based on dyeing theory |
| CN111693221A (en) * | 2019-12-05 | 2020-09-22 | 摩登汽车有限公司 | Waterproof test method and equipment for automobile electrical equipment |
| CN115046697A (en) * | 2022-06-17 | 2022-09-13 | 西南交通大学 | Method for detecting seal front edge of hydraulic conduit joint |
| CN116718327A (en) * | 2023-08-11 | 2023-09-08 | 广州奥太制冷设备有限公司 | Leakage detection device for heat exchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168934A (en) * | 1986-12-29 | 1988-07-12 | Matsushita Electronics Corp | Leak detecting method for fluorescent lamp |
| US6435779B1 (en) * | 1999-10-04 | 2002-08-20 | Bright Solutions, Inc. | Method and apparatus for introducing a tablet into a climate control system |
| CN203132233U (en) * | 2013-02-18 | 2013-08-14 | 武汉理工大学 | Automatic fluorescent agent filling mechanism of automotive air conditioner refrigerant recovery filling machine |
| CN105067635A (en) * | 2015-07-10 | 2015-11-18 | 国网天津市电力公司 | Power plant pressure container leakage detection method based on capillary action principle |
-
2017
- 2017-12-27 CN CN201711444552.1A patent/CN108151980A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63168934A (en) * | 1986-12-29 | 1988-07-12 | Matsushita Electronics Corp | Leak detecting method for fluorescent lamp |
| US6435779B1 (en) * | 1999-10-04 | 2002-08-20 | Bright Solutions, Inc. | Method and apparatus for introducing a tablet into a climate control system |
| CN203132233U (en) * | 2013-02-18 | 2013-08-14 | 武汉理工大学 | Automatic fluorescent agent filling mechanism of automotive air conditioner refrigerant recovery filling machine |
| CN105067635A (en) * | 2015-07-10 | 2015-11-18 | 国网天津市电力公司 | Power plant pressure container leakage detection method based on capillary action principle |
Non-Patent Citations (3)
| Title |
|---|
| 杨晓明: "《压力容器安全工程学》", 31 December 2012, 东北大学出版社 * |
| 王玉春: "荧光示踪检漏技术在柴油机上的应用", 《内燃机》 * |
| 龚明树: "《建筑水暖及空调设备安装》", 31 March 2016, 武汉理工大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109506843A (en) * | 2018-12-10 | 2019-03-22 | 上海交通大学 | Mating surface leakage region measuring system and method based on dyeing theory |
| CN111693221A (en) * | 2019-12-05 | 2020-09-22 | 摩登汽车有限公司 | Waterproof test method and equipment for automobile electrical equipment |
| CN115046697A (en) * | 2022-06-17 | 2022-09-13 | 西南交通大学 | Method for detecting seal front edge of hydraulic conduit joint |
| CN116718327A (en) * | 2023-08-11 | 2023-09-08 | 广州奥太制冷设备有限公司 | Leakage detection device for heat exchanger |
| CN116718327B (en) * | 2023-08-11 | 2023-12-12 | 广州奥太制冷设备有限公司 | Leakage detection device for heat exchanger |
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Application publication date: 20180612 |