CN108168792A - A kind of close property detection method of the ship pipeline based on ultrasonic wave leak detection technology - Google Patents
A kind of close property detection method of the ship pipeline based on ultrasonic wave leak detection technology Download PDFInfo
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- CN108168792A CN108168792A CN201711416187.3A CN201711416187A CN108168792A CN 108168792 A CN108168792 A CN 108168792A CN 201711416187 A CN201711416187 A CN 201711416187A CN 108168792 A CN108168792 A CN 108168792A
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- pipeline
- ultrasonic wave
- receiver
- ultrasonic
- close property
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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
- G01M3/24—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations
- G01M3/243—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes
- G01M3/246—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using infrasonic, sonic, or ultrasonic vibrations for pipes using pigs or probes travelling in the pipe
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- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of close property detection methods of ship pipeline based on ultrasonic wave leak detection technology, specifically include following steps：Whether detection ultrasonic wave leak detector can work normally；It opens supersonic generator and is placed in pipeline；Open ultrasonic receiver；It is gradually detected along weld seam using acoustic probe or concentrator apparatus；The fluctuating range of receiver or ultrasonic receiver conformable display pointer is observed, judges leakage point position.The remolding sensitivity air seal test and the high sensitivity of the water pressure test that ultrasonic wave of the present invention leaks hunting, have been effectively ensured the quality of connection of pipeline junction, and substantially reduce detection time and testing cost；The method of the present invention is applicable not only to the close property detection of pipeline, is also applied for the close property detection of various confined spaces, is widely used, is easy to operate.
Description
Technical field
The present invention relates to the close property detection technique field of pipeline, more particularly to a kind of ship based on ultrasonic wave side leakage technology
The close property detection method of pipeline.
Background technology
As shipbuilding total amount is continuously improved, rhythm of production is constantly accelerated, and traditional Shipbuilding Mode has been not suitable with present high speed
The production model of shipbuilding, improves that efficiency, to drop this gain extremely urgent during shipbuilding.Ship pipeline system compared with
It is more, heavy workload and pipeline connection（Butt welding connection, sleeve weldering connection, flanged joint, nipple connection etc.）Locate quality control
System always is the weak link for ensureing the close property of pipeline.
Be the bilge ballast pipeline of water for circulation medium in pipe, cooling water pipeline, water fire main, life water lines,
The pressure pipings such as boiler feedwater pipeline and steam pipework generally all carry out tightness test using the method for hydraulic pressure；For in pipe
Circulation medium is the compressed air line of air, generally carries out tightness test as test(ing) medium using compressed air；For pipe
The pressure pipings such as fuel pipe, lube pipe and fluid pressure line of the interior circulation medium for oil plant, when should test its seal without
Leakage phenomenon generates.Before tightness test is carried out with oil plant medium, trial test first is carried out with the compressed air of 0.2~0.4MPa,
Then preliminary the defects of excluding to generate leakage in pipeline, carries out formal seal with oil plant again and tests.Oily seal experiment
Method is substantially the same with water lines seal test method.Traditional air seal test and hydraulic test method can only detect leak
The pipeline defect of increasing can not detect micro leakage, and test is inaccurate, sensitivity is relatively low, the test consuming time is longer.
Invention content
The purpose of the present invention is overcome the deficiencies in the prior art, design a kind of ship pipe based on ultrasonic wave leak detection technology
The close property detection method in road.
In order to achieve the above objectives, the technical solution adopted in the present invention is：
A kind of close property detection method of the ship pipeline based on ultrasonic wave leak detection technology, which is characterized in that using ultrasonic wave leak detector
The close property detection of pipeline is carried out, the ultrasonic wave leak detector is included to send out the supersonic generator of ultrasonic signal, for general
The ultrasonic receiver of ultrasonic signal Transform Acoustic signal, for detect the acoustic probe of leakage point at pipeline sealed connection,
For the concentrator apparatus that increases detection range and accuracy of detection and for shielding ambient noise to identify listening for leakage current
Cylinder, the acoustic probe and concentrator apparatus are connect respectively with ultrasonic receiver, the voice signal output of ultrasonic receiver
End is connect with the audio signal input of receiver；
The close property detection method of ship pipeline specifically includes following steps：
Step 1：Detect whether the ultrasonic wave leak detector can work normally；
Step 2：Judge, if being not present, to place after supersonic generator is opened with the presence or absence of working media in the pipeline
In channel interior, the supersonic generator is placed at the sealed connection of pipeline, otherwise, ultrasonic wave is not placed in pipeline
Device；
Step 3：Unlatching is equipped with acoustic probe or the ultrasonic receiver of concentrator apparatus；
Step 4：It is gradually detected along weld seam at the sealed connection of pipeline using acoustic probe or concentrator apparatus；
Step 5：Acoustic probe or concentrator apparatus along during weld movement, observe in real time whether have in receiver sound and/
Or whether the fluctuating range of the pointer in ultrasonic receiver conformable display in setting range, if having in receiver sound and/
Or the fluctuating range of pointer in setting range, then acoustic probe or the current detecting location of concentrator apparatus are leakage position.
Preferably, detected in the step 1 the ultrasonic wave leak detector whether the specific steps that can be worked normally
For：
Step 1.1：Two pipelines are chosen, and will be welded and fixed at the docking of two pipelines, it is pre- at its docking during welding
Stay a leak；
Step 1.2：A band bored plate of pneumatic head is fixed in the left part of pipeline, fixed in the right part of pipeline one it is detachable bored
Plate；
Step 1.3：Be placed on the position of channel interior leak after supersonic generator is opened, and by the left part of pipeline and
Right part is sealed；
Step 1.4：Ultrasonic receiver equipped with acoustic probe or concentrator apparatus is placed at leak, is moved up and down
Dynamic acoustic probe or concentrator apparatus, if there is sound in receiver, the ultrasonic wave leak detector normal work.
Preferably, step 2.1 is further included between the step 2 and step 3：To being carried out at the pipeline sealed connection
Polishing.
Preferably, in the step 5, when the fluctuating range of the pointer in ultrasonic receiver instruction disk is in 1.5-
During 30dB, there is leakage in the current detecting location of acoustic probe or concentrator apparatus.
Preferably, the tranmitting frequency of the supersonic generator is 40kHz.
The positive beneficial effect of the present invention：The present invention carries out the close property detection of pipeline, ultrasound using ultrasonic wave leak detector
The quality of connection of pipeline junction has been effectively ensured, and big in the remolding sensitivity air seal test of leakage and the high sensitivity of the water pressure test
Shorten detection time and testing cost greatly；The method of the present invention is applicable not only to the close property detection of pipeline, is also applied for various closed
The close property detection in space, is widely used, is easy to operate.
Description of the drawings
Fig. 1 is the flow chart of the method for the present invention.
Fig. 2 is the functional block diagram of ultrasonic wave leak detector.
Specific embodiment
Understand to make the object, technical solutions and advantages of the present invention clearer, it is specific below by what is shown in attached drawing
Embodiment describes the present invention.However, it should be understood that these descriptions are merely illustrative, and it is not intended to limit the model of the present invention
It encloses.In addition, in the following description, the description to known features and technology is omitted, to avoid unnecessarily obscuring the present invention's
Concept.
Illustrate present embodiment with reference to Fig. 1, Fig. 2, a kind of ship pipeline based on ultrasonic wave leak detection technology of the invention is close
Property detection method, carrying out the close property of pipeline using ultrasonic wave leak detector detects, the remolding sensitivity air seal test and water that ultrasonic wave leaks hunting
Press the high sensitivity of experiment.Since the paint of seal for pipe joints junction coating can affect to leak detection,
The close property detection of the pipeline preferably carried out before coating paint at pipeline sealed connection or before close property detection is carried out it is right
It polishes seal for pipe joints junction.
The ultrasonic wave leak detector is included to send out the supersonic generator of ultrasonic signal, for by ultrasonic signal
It is converted to the ultrasonic receiver of the identifiable voice signal of human ear, visited for detecting the acoustics of leakage point at pipeline sealed connection
Needle, for the concentrator apparatus that increases detection range and accuracy of detection and for shielding ambient noise to identify leakage air-flow
Receiver, the acoustic probe and concentrator apparatus are connect respectively with ultrasonic receiver, and the voice signal of ultrasonic receiver is defeated
The audio signal input of outlet and receiver connects.In the present embodiment, the tranmitting frequency of the supersonic generator is 40kHz.
The close property detection method of ship pipeline specifically includes following steps：
Step 1：Detect whether the ultrasonic wave leak detector can work normally.
Specifically, first, two pipelines are chosen, and will be welded and fixed at the docking of two pipelines, during welding, at it
A leak is reserved at docking；Then, a band bored plate of pneumatic head is fixed in the left part of pipeline, is fixed in the right part of pipeline
One detachable bored plate；It is placed on the position of channel interior leak holes after supersonic generator is opened, and by the left end of pipeline
Portion and right part are sealed；Acoustic probe or concentrator apparatus are placed at leak, move up and down acoustic probe
Or concentrator apparatus, if there is strong sound variation in receiver, the ultrasonic wave leak detector normal work.
Step 2：Judge to whether there is working media in the pipeline, if being not present, after supersonic generator is opened
Channel interior is placed on, the supersonic generator is placed at the sealed connection of pipeline, otherwise, ultrasonic wave is not placed in pipeline
Generator.
It checks at the sealed connection of pipeline and whether is coated with paint, if so, then to polishing at sealing.
Step 3：Open the ultrasonic receiver equipped with acoustic probe or concentrator.
Step 4：It is gradually detected along weld seam at the sealed connection of pipeline using acoustic probe or concentrator apparatus.
Step 5：Acoustic probe or concentrator apparatus along during weld movement, observe in real time whether have in receiver it is strong
Sound variation and/or ultrasonic receiver instruction disk in pointer fluctuating range whether in setting range, if in receiver
There is the fluctuating range of sound and/or pointer in setting range, then acoustic probe or the current detecting location of concentrator apparatus are
Reveal position.In the present embodiment, when using the fluctuating range of pointer as the foundation for judging whether leakage point, if pointer
Fluctuating range in the range of 1.5-30dB, then show that the current detecting location of acoustic probe or concentrator apparatus has leakage.
In order to verify the side leakage effect of the close property detection method of pipeline of the present invention, ultrasonic wave leak detector butt welding using the present invention
Paint is coated at seam and the pipeline without painting has carried out close property and detected respectively, specific testing result is as shown in the table
According to upper table detection data it is found that the close property accuracy of detection higher of pipeline of the weld seam without paint, therefore, is carrying out close property examination
It tests before detection, needs to polish at the sealed connection to pipeline, to improve its accuracy of detection and accuracy.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that；Still
It can modify to the specific embodiment of the present invention or equivalent replacement is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution should all cover in the claimed technical solution range of the present invention.
Claims (5)
1. a kind of close property detection method of the ship pipeline based on ultrasonic wave leak detection technology, which is characterized in that leaked hunting using ultrasonic wave
Instrument carries out the close property detection of pipeline, and the ultrasonic wave leak detector includes sending out the supersonic generator of ultrasonic signal, being used for
It is visited by the ultrasonic receiver of ultrasonic signal Transform Acoustic signal, for detecting the acoustics of leakage point at pipeline sealed connection
Needle, for the concentrator apparatus that increases detection range and accuracy of detection and for shielding ambient noise to identify leakage current
Receiver, the acoustic probe and concentrator apparatus are connect respectively with ultrasonic receiver, and the voice signal of ultrasonic receiver is defeated
The audio signal input of outlet and receiver connects；
The close property detection method of ship pipeline specifically includes following steps：
Step 1：Detect whether the ultrasonic wave leak detector can work normally；
Step 2：Judge, if being not present, to place after supersonic generator is opened with the presence or absence of working media in the pipeline
In channel interior, the supersonic generator is placed at the sealed connection of pipeline, otherwise, ultrasonic wave is not placed in pipeline
Device；
Step 3：Unlatching is equipped with acoustic probe or the ultrasonic receiver of concentrator apparatus；
Step 4：It is gradually detected along weld seam at the sealed connection of pipeline using acoustic probe or concentrator apparatus；
Step 5：Acoustic probe or concentrator apparatus along during weld movement, observe in real time whether have in receiver sound and/
Or whether the fluctuating range of the pointer in ultrasonic receiver conformable display in setting range, if having in receiver sound and/
Or the fluctuating range of pointer in setting range, then acoustic probe or the current detecting location of concentrator apparatus are leakage position.
2. the close property detection method of the ship pipeline based on ultrasonic wave leak detection technology according to claim 1, which is characterized in that
Detect whether the ultrasonic wave leak detector can work normally in the step 1 the specific steps are：
Step 1.1：Two pipelines are chosen, and will be welded and fixed at the docking of two pipelines, it is pre- at its docking during welding
Stay a leak；
Step 1.2：A band bored plate of pneumatic head is fixed in the left part of pipeline, fixed in the right part of pipeline one it is detachable bored
Plate；
Step 1.3：Be placed on the position of channel interior leak after supersonic generator is opened, and by the left part of pipeline and
Right part is sealed；
Step 1.4：Ultrasonic receiver equipped with acoustic probe or concentrator apparatus is placed at leak, is moved up and down
Dynamic acoustic probe or concentrator apparatus, if there is sound in receiver, the ultrasonic wave leak detector normal work.
3. the close property detection method of the ship pipeline based on ultrasonic wave leak detection technology according to claim 1, which is characterized in that
Step 2.1 is further included between the step 2 and step 3：To polishing at the pipeline sealed connection.
4. the close property detection method of the ship pipeline based on ultrasonic wave leak detection technology according to claim 1, which is characterized in that
In the step 5, when the fluctuating range of the pointer in ultrasonic receiver instruction disk is in 1.5dB-30dB, acoustic probe or collection
There is leakage in the current detecting location of middle device device.
5. the close property detection method of the ship pipeline based on ultrasonic wave leak detection technology according to claim 1, which is characterized in that
The tranmitting frequency of the supersonic generator is 40kHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711416187.3A CN108168792A (en) | 2017-12-25 | 2017-12-25 | A kind of close property detection method of the ship pipeline based on ultrasonic wave leak detection technology |
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| CN201711416187.3A CN108168792A (en) | 2017-12-25 | 2017-12-25 | A kind of close property detection method of the ship pipeline based on ultrasonic wave leak detection technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242967A (en) * | 2018-12-24 | 2021-08-10 | 爱德华兹有限公司 | Method and apparatus for leak detection |
| CN113280985A (en) * | 2021-05-24 | 2021-08-20 | 上海奋为船舶技术有限公司 | Ship watertight cabin sealing performance detection system and detection method |
| CN113465843A (en) * | 2021-07-21 | 2021-10-01 | 上海外高桥造船有限公司 | Equipment and method for detecting tightness of ship pipeline system |
| CN115420437A (en) * | 2022-11-07 | 2022-12-02 | 南京邮电大学 | Ultrasonic leak detection device based on deep learning |
| TWI792508B (en) * | 2021-08-19 | 2023-02-11 | 徐千婷 | Pipeline path detection system and method |
| CN116929662A (en) * | 2023-09-18 | 2023-10-24 | 广州广钢气体能源股份有限公司 | Device and method for detecting leakage of closed container based on ultrasonic active excitation |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242967A (en) * | 2018-12-24 | 2021-08-10 | 爱德华兹有限公司 | Method and apparatus for leak detection |
| CN113280985A (en) * | 2021-05-24 | 2021-08-20 | 上海奋为船舶技术有限公司 | Ship watertight cabin sealing performance detection system and detection method |
| CN113465843A (en) * | 2021-07-21 | 2021-10-01 | 上海外高桥造船有限公司 | Equipment and method for detecting tightness of ship pipeline system |
| TWI792508B (en) * | 2021-08-19 | 2023-02-11 | 徐千婷 | Pipeline path detection system and method |
| CN115420437A (en) * | 2022-11-07 | 2022-12-02 | 南京邮电大学 | Ultrasonic leak detection device based on deep learning |
| CN116929662A (en) * | 2023-09-18 | 2023-10-24 | 广州广钢气体能源股份有限公司 | Device and method for detecting leakage of closed container based on ultrasonic active excitation |
| CN116929662B (en) * | 2023-09-18 | 2023-12-15 | 广州广钢气体能源股份有限公司 | Device and method for detecting leakage of closed container based on ultrasonic active excitation |
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Application publication date: 20180615 |
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