CN102323012A - Ultrasonic leak checking method of cooling wall of blast furnace - Google Patents
Ultrasonic leak checking method of cooling wall of blast furnace Download PDFInfo
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- CN102323012A CN102323012A CN201110268776A CN201110268776A CN102323012A CN 102323012 A CN102323012 A CN 102323012A CN 201110268776 A CN201110268776 A CN 201110268776A CN 201110268776 A CN201110268776 A CN 201110268776A CN 102323012 A CN102323012 A CN 102323012A
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to an ultrasonic leak checking method of a cooling wall of a blast furnace. Bubbles in cooling water of the blast furnace are detected by using an ultrasonic principle, therefore, the purpose of detecting leakage is achieved (when bubbles exist in the cooling water, the pipe wall leaks, otherwise, the pipe wall is perfect). The ultrasonic leak checking method has the advantages of convenience for operation, sensitivity and accuracy in detection, and capability of detecting small leakage, therefore, a furnace wall pipe with a leaked cooling wall can be immediately processed.
Description
Technical field
The present invention relates to a kind of blast furnace cooling stave ultrasound wave leak detection method, belong to the pipeline detection range that leaks hunting.
Background technology
Up to the present, be example with the Baogang, the pick-up unit that does not leak hunting to blast furnace cooling stave; Find the situation that cooling wall leaks, rule of thumb, make at water delivering orifice to detect by an unaided eye; Whether the water yield diminishes, if there is explanation that the phenomenon of leakage is arranged, that part of on earth leakage is not known yet; Up to the especially severe that blast furnace cooling stave leaks, when temperature is very high, could find.Through inspection information, domestic each big steel mill leaks hunting to the blast furnace cooling stave pipe and adopted variety of way, as: conductance method, discharge method, pneumatic process, Mechanical Method etc.; Some is to install to closed cycle cooling system; All do not obtain good effect, as: discharge method, because of the in-tube fouling diameter constantly changes; Make to measure to produce very mistake, can't realize accurate measurement.Ultrasonic test equipment is a kind of technology of moulding, and the A-mode ultrasonic ripple is mainly used in the detection of metal inside defectives such as steel, copper, but ultrasonic equipment is used for method that the blast furnace cooling stave ultrasound wave leaks hunting is domestic also not to be adopted.
Summary of the invention
The purpose of this invention is to provide a kind of sensitive and accurate, as can to detect minute leakage blast furnace cooling stave ultrasound wave leak detection method that detects.
Leak detection method of the present invention is following:
Make a blast furnace cooling stave connecting tube with preservative material, on the sidewall of connecting tube, open the ultrasonic probe installation through holes of at least one, ultrasonic probe is installed in the ultrasonic probe through hole; Probe is imbedded in the pipe, connecting tube is connected on the cooling wall furnace wall tubes that will detect, probe is connected with lead with ultrasonic instrument; Adjust the sensitivity of instrument, connect instrument cable, let water through being equipped with the connecting tube of probe; If cooling wall does not have leakage phenomenon, then on ultrasonic instrument, beginning ripple and end ripple only appear; If the phenomenon of leakage is arranged, then between beginning ripple and end ripple, have defect waves, when leakage is serious; Have only beginning ripple and defect waves on the ultrasonic instrument, do not have end ripple to occur, thereby judge the leakiness of cooling wall.
The principle of leaking hunting of the present invention is: utilize hyperacoustic principle, detect the bubble in the blast-furnace cooled water, thereby reach the purpose (when having bubble to exist in the chilled water, then have tube wall to leak, otherwise then do not have) that detects leakage phenomenon.
Advantage of the present invention is: easy and simple to handle, detect sensitive and accurate, can detect minute leakage, thereby can in time handle the furnace wall tubes of cooling staveleakage.
Description of drawings
Fig. 1 is the connecting tube synoptic diagram that a plurality of probes are installed;
Fig. 2 is the connecting tube synoptic diagram that single probe is installed;
Fig. 3 is cooling wall oscillogram on the ultrasonic instrument when not having leakage phenomenon;
Fig. 4 is cooling wall oscillogram on ultrasonic instrument when leakage phenomenon is arranged.
Embodiment
Embodiment: the cooling wall ultrasound wave of the Baogang's blast furnace cooling system experiment of leaking hunting.
I investigate on-the-spot blast furnace, to the cooling water pipe sample analysis, do lot of test; Pipe appearance has been done dissection and analysis; Because of the chilled water of Baogang's blast furnace cooling system does not soften processing, the steel pipe inner wall corrosion of cooling wall furnace wall tubes is serious, and dross; Ultrasound wave can't be directly from managing bubble in the outer wall detector tube; To this problem, we have got rid of influences the influence of ultrasound wave transmission to detecting, and adopts multi-probe coupling probe device and single probe apparatus (seeing accompanying drawing 1,2) to solve the problems referred to above.In the reality test, be installed to several groups of probe apparatus on the cooling wall water pipe that will detect, be inserted on the probe interface of the water pipe that will detect with the probe line during detection; If cooling wall does not have leakage phenomenon, then on ultrasonic instrument, beginning ripple 4 and end ripple 5 (seeing accompanying drawing 3) only appear; If the phenomenon of leakage is arranged; Then between beginning ripple 4 and end ripple 5, defect waves 6 (seeing accompanying drawing 4) occurs, leak and seriously have only beginning ripple 4 and defect waves 6, do not have end ripple 5 to occur; Thereby judge the leakiness of cooling wall, in time handle.As: in the test of No. six blast furnaces, to blast-furnace tuyere cooling wall 21#, 22#, when 15#, 29# test, 21#, 22# air port cooling wall are good; We are benchmark with these two cooling walls, adjustment sensitivity, and sensitivity 64dB, making between beginning ripple and the end ripple does not have clutter; When detecting 15#, 29#, find a large amount of defect waves, 15# air port defect waves is more serious; Have only beginning ripple and defect waves, do not have end ripple, carried out closing water treatment; 29# air port defect waves is lacked than 15# air port defect waves, explains that leakage is serious not as the 15# air port, reduces the water yield and handles.In the laboratory and on-the-spot test work finish, experiment effect is very good.
Probe apparatus:
Because of blast furnace cooling stave pipe internal incrustation, ultrasound wave can't directly import steel duct into from the pipe outer wall, and we have selected copper, stainless steel for use; Preservative material such as woollen goods pipe are made blast furnace cooling stave connecting tube 1, the silk mouth that on connecting tube 1, is connected with the processing furnace wall tubes, perforating on its outer wall; Probe 2 is imbedded constituted probe apparatus in the pipe, thereby address the above problem the purpose that reaches detection, multi-probe mounting means is in order to make ultrasonic scanning to the inner all zones of caliber; When solving the cooling wall starting leakage; Bubble is very little, has departed from the scanning scope of single probe, avoids omission.
Claims (1)
1. a blast furnace cooling stave ultrasound wave leak detection method is characterized in that: make a blast furnace cooling stave connecting tube with preservative material, on the sidewall of connecting tube, open the ultrasonic probe installation through holes of at least one, ultrasonic probe is installed in the ultrasonic probe through hole; Probe is imbedded in the pipe, connecting tube is connected on the cooling wall furnace wall tubes that will detect, probe is connected with lead with ultrasonic instrument; Adjust the sensitivity of instrument, connect instrument cable, let water through being equipped with the connecting tube of probe; If cooling wall does not have leakage phenomenon, then on ultrasonic instrument, beginning ripple and end ripple only appear; If the phenomenon of leakage is arranged, then between beginning ripple and end ripple, have defect waves, when leakage is serious; Have only beginning ripple and defect waves on the ultrasonic instrument, do not have end ripple to occur, thereby judge the leakiness of cooling wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268776A CN102323012A (en) | 2011-09-05 | 2011-09-05 | Ultrasonic leak checking method of cooling wall of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110268776A CN102323012A (en) | 2011-09-05 | 2011-09-05 | Ultrasonic leak checking method of cooling wall of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102323012A true CN102323012A (en) | 2012-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110268776A Pending CN102323012A (en) | 2011-09-05 | 2011-09-05 | Ultrasonic leak checking method of cooling wall of blast furnace |
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| CN (1) | CN102323012A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103728107A (en) * | 2013-12-31 | 2014-04-16 | 上海集成电路研发中心有限公司 | Device and method for detecting gas leakage of tubular object |
| CN105588880A (en) * | 2015-12-11 | 2016-05-18 | 武汉钢铁(集团)公司 | Detection method for melting effect between cast copper cooling wall body for blast furnace and cast-in cooling water pipe for blast furnace |
| US20160273993A1 (en) * | 2013-10-24 | 2016-09-22 | Jain Irrigation Systems Limited | Method and system for detection of blowout in pipes/tubes |
| CN110261046A (en) * | 2013-10-02 | 2019-09-20 | 雅马哈精密科技株式会社 | The check device and inspection method of sealed package product |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5252810A (en) * | 1975-10-28 | 1977-04-28 | Nippon Steel Corp | Method for detecting breakage of cooling equipment of high temperature furnace |
| JPS63134608A (en) * | 1986-11-26 | 1988-06-07 | Nippon Steel Corp | Method for measuring remaining thickness of tuyere in blast furnace |
| CN2608513Y (en) * | 2002-12-31 | 2004-03-31 | 张勇 | Blast furnace cooler breakage detecting device |
-
2011
- 2011-09-05 CN CN201110268776A patent/CN102323012A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5252810A (en) * | 1975-10-28 | 1977-04-28 | Nippon Steel Corp | Method for detecting breakage of cooling equipment of high temperature furnace |
| JPS63134608A (en) * | 1986-11-26 | 1988-06-07 | Nippon Steel Corp | Method for measuring remaining thickness of tuyere in blast furnace |
| CN2608513Y (en) * | 2002-12-31 | 2004-03-31 | 张勇 | Blast furnace cooler breakage detecting device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261046A (en) * | 2013-10-02 | 2019-09-20 | 雅马哈精密科技株式会社 | The check device and inspection method of sealed package product |
| CN110261046B (en) * | 2013-10-02 | 2022-08-19 | 雅马哈精密科技株式会社 | Inspection device and inspection method for sealed packaged product |
| US20160273993A1 (en) * | 2013-10-24 | 2016-09-22 | Jain Irrigation Systems Limited | Method and system for detection of blowout in pipes/tubes |
| US10107707B2 (en) * | 2013-10-24 | 2018-10-23 | Jain Irrigation Systems Limited | Method and system for detection of blowout in pipes/tubes |
| CN103728107A (en) * | 2013-12-31 | 2014-04-16 | 上海集成电路研发中心有限公司 | Device and method for detecting gas leakage of tubular object |
| CN105588880A (en) * | 2015-12-11 | 2016-05-18 | 武汉钢铁(集团)公司 | Detection method for melting effect between cast copper cooling wall body for blast furnace and cast-in cooling water pipe for blast furnace |
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Application publication date: 20120118 |