CN102141460A - Airtightness test machine for titanium welded pipes - Google Patents
Airtightness test machine for titanium welded pipes Download PDFInfo
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- CN102141460A CN102141460A CN2011100394974A CN201110039497A CN102141460A CN 102141460 A CN102141460 A CN 102141460A CN 2011100394974 A CN2011100394974 A CN 2011100394974A CN 201110039497 A CN201110039497 A CN 201110039497A CN 102141460 A CN102141460 A CN 102141460A
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Abstract
The invention discloses an airtightness test machine for titanium welded pipes, and the airtightness test machine provided by the invention is composed of a step feeder, a tested device and a testing device, wherein the step feeder is composed of a conveyor belt, a support and a step clamp device; the tested device is composed of an air inflation end cylinder, an air inflation end seat, an air inflation head, a plugging head, a plugging end seat and a plugging end cylinder; the testing device is composed of a booster pump, a precision pressure reducing valve, an air evacuation valve, an upper air intake valve, a lower air intake valve, a high-precision differential pressure gauge, a high-pressure gas hose, a welded pipe, a standard pipe and a differential pressure detector; in the process of testing, the booster pump boosts the pressure of low pressure air to 1-2MPa, so that the low pressure air is changed into high pressure air; after pressure reduction is carried out on the high pressure air by the precision pressure reducing valve, the pressure of the obtained air reaches the pressure (generally 0.5-1MPa) required by airtightness test; at the moment, the air evacuation valve of the differential pressure detector is closed, and the upper and lower air intake valves are opened simultaneously, when the inflation pressure meets the preset requirements, the upper and lower air intake valves are closed simultaneously; and then the high-precision differential pressure gauge begins testing the pressure difference between the standard pipe and the welded pipe, and the testing time is 3-10 seconds.
Description
Technical field
Titanium welding pipe airtight test machine of the present invention relates to a kind of proving installation, a kind of airtight test machine of the airtight detection of specifically a kind of titanium welding pipe production line.
Background technology
At present, airtight detection mainly contains bubble method and direct press type detection method on the titanium welding pipe production line, and the bubble method can only be estimated can't quantitative expression, and accuracy of detection is also very low, and follow-up work will dewater, dry, antirust, additionally have high input; Direct press type detection method accuracy of detection is low, and these two kinds of methods all can not satisfy the requirement of the accurate airtight detection of titanium welding pipe, have only differential airtight detection can satisfy the accuracy requirement of the airtight detection of titanium welding pipe, and the automaticity height, do not have artificial factor affecting.Current airtight detection major defect and weak point:
1. testing efficiency is low;
2. influenced greatly by human factor, not objective;
3. accuracy of detection is low.
At existing problem in the above-mentioned prior art, a kind of novel titanium welding pipe airtight test machine of research and design, existing problem is very necessary in the prior art thereby overcome.
Summary of the invention
In view of existing problem in the above-mentioned prior art, the objective of the invention is a kind of novel titanium welding pipe airtight test machine of research and design, thereby it is also very low to solve bubble method and the existing accuracy of detection of direct press type detection method, and the present existing testing efficiency of employed differential airtight detection method is low, be subjected to human factor to influence problems such as big.
Titanium welding pipe airtight test machine of the present invention is made up of step feeding machine, detected device and pick-up unit, and described step feeding machine is made up of travelling belt, bearing and stepping clamp device.Described detected device is made up of inflation end cylinder, inflation end seat, pneumatic head, block head, shutoff end seat, shutoff end cylinder.Described inflation end seat and shutoff end seat are fixed on two crossbeams between the bearing.Inflation end cylinder is housed on the described inflation end seat, connects pneumatic head on the piston rod that inflation end cylinder stretches out.On the described shutoff end seat shutoff end cylinder is housed, connects block head on the piston rod that shutoff end cylinder stretches out.Clamp detected titanium welding pipe between block head and the pneumatic head.Described pick-up unit is made up of supercharge pump, accurate reduction valve, vent valve, upper inlet valve, lower inlet valve, high precision differential pressure gauge, high pressure gas flexible pipe, welded tube, standard pipe, differential pressure detector.Supercharge pump is connected to the differential pressure detector through accurate reduction valve.Be divided into two-way in the differential pressure detector, the one tunnel is linked to standard pipe through lower inlet valve, and another road is linked to titanium welding pipe through upper inlet valve and high pressure gas flexible pipe.The gas outlet end of upper inlet valve and lower inlet valve is connected with the high precision differential pressure gauge.The air intake opening end of upper inlet valve is connected with vent valve.
During titanium welding pipe tightness test machine testing of the present invention, supercharge pump is pressurized to the high pressure gas of 1-2MPa with low-pressure air, reaches the required pressure of airtight detection after accurate reduction valve decompression, is generally 0.5-1MPa, and be 3-10 second detection time.
Titanium welding pipe airtight test machine of the present invention is to be used for the airtight test machine that titanium welding pipe to welded tube diameter phi 10～40mm, wall thickness 0.5～2mm carries out airtight detection
The process of the test of titanium welding pipe airtight test machine of the present invention is as follows; Tested titanium welding pipe is moved into by the travelling belt through the step feeding machine on the production line, clamp welded tube by clamping step device, inflation end cylinder and shutoff end cylinder drive pneumatic head and block head sealing welded tube respectively, supercharge pump is pressurized to low-pressure air the high pressure gas of 1.5MPa, after accurate reduction valve decompression, reach the required pressure of airtight detection (being generally 0.7MPa), enter the differential pressure detector.This moment the differential pressure detector exhaust valve closure, upper inlet valve and lower inlet valve are opened simultaneously, when reaching, charge pressure stops inflation after setting requires, close upper inlet valve and lower inlet valve simultaneously, the high precision differential pressure gauge begins the pressure differential of examination criteria pipe (standard pipe is the welded tube that do not have leakage same with welded tube) and welded tube, detect (can set detection time) after 5 seconds, the high precision differential pressure gauge is directly changed into leakage rate with testing result and shows, and judges that thus whether qualified welded tube is.Whole process full automation has strengthened work efficiency greatly, has avoided artificial factor, and adopts high precision differential pressure detector, and accuracy of detection is improved greatly, has satisfied the requirement of the airtight detection of titanium welding pipe high precision, and accuracy of detection reaches ± 5Pa.
Titanium welding pipe airtight test machine of the present invention and present existing airtight test machine relatively have the following advantages:
1), detection efficiency height;
2), detect the automaticity height;
3), accuracy of detection significantly improves;
4), simple in structure, economical and practical.
Description of drawings
The present invention has three width of cloth accompanying drawings, wherein:
Fig. 1 is a titanium welding pipe airtight test machine structural representation;
Fig. 2 is a stepping clamp device structural representation;
Fig. 3 is a titanium welding pipe tightness test machine testing schematic diagram.
Among the figure: 1, bearing 2, inflation end cylinder 3, inflation end seat 4, pneumatic head 5, stepping clamp device 6, block head 7, shutoff end seat 8, shutoff end cylinder 9, supercharge pump 10, accurate reduction valve 11, vent valve 12, upper inlet valve 13, lower inlet valve 14, high precision differential pressure gauge 15, high pressure gas flexible pipe 16, welded tube 17, standard pipe 18, differential pressure detector.
Embodiment
Specific embodiments of the invention as shown in drawings, accompanying drawing 1 is depicted as titanium welding pipe airtight test machine structural representation, described titanium welding pipe airtight test machine is made up of step feeding machine, detected device and pick-up unit, and described step feeding machine is formed (seeing shown in the accompanying drawing 2) by travelling belt, bearing 1 and stepping clamp device 5.Described detected device is made up of inflation end cylinder 2, inflation end seat 3, pneumatic head 4, block head 6, shutoff end seat 7, shutoff end cylinder 8.Described inflation end seat 3 and shutoff end seat 7 are fixed on two crossbeams between the bearing 1.Inflation end cylinder 2 is housed on the described inflation end seat 3, connects pneumatic head 4 on the piston rod that inflation end cylinder 2 stretches out.On the described shutoff end seat 7 shutoff end cylinder 8 is housed, connects block head 6 on the piston rod that shutoff end cylinder 8 stretches out.Clamp detected titanium welding pipe 16 between block head 6 and the pneumatic head 4.Described pick-up unit is formed (seeing shown in the accompanying drawing 3) by supercharge pump 9, accurate reduction valve 10, vent valve 11, upper inlet valve 12, lower inlet valve 13, high precision differential pressure gauge 14, high pressure gas flexible pipe 15, welded tube 16, standard pipe 17, differential pressure detector 18.Supercharge pump 9 is connected to differential pressure detector 18 through accurate reduction valve 10.Be divided into two-way in the differential pressure detector 18, the one tunnel is linked to standard pipe 17 through lower inlet valve 12, and another road is linked to titanium welding pipe 16 through upper inlet valve 13 and high pressure gas flexible pipe 15.The gas outlet end of upper inlet valve 13 and lower inlet valve 12 is connected with high precision differential pressure gauge 14.The air intake opening end of upper inlet valve 13 is connected with vent valve 11.
During titanium welding pipe tightness test machine testing of the present invention, supercharge pump 9 is pressurized to the high pressure gas of 1.5MPa with low-pressure air, reaches the required pressure of airtight detection after accurate reduction valve 10 decompressions, is generally 0.7MPa, and be 5 seconds detection time.
The above; it only is preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; all are familiar with those skilled in the art in technical scope disclosed by the invention, are equal to replacement or change and all should be encompassed within protection scope of the present invention according to technical scheme of the present invention and design of the present invention thereof.
Claims (2)
1. a titanium welding pipe airtight test machine is made up of step feeding machine, detected device and pick-up unit, and described step feeding machine is made up of travelling belt, bearing (1) and stepping clamp device (5); It is characterized in that described detected device is made up of inflation end cylinder (2), inflation end seat (3), pneumatic head (4), block head (6), shutoff end seat (7), shutoff end cylinder (8); Described inflation end seat (3) and shutoff end seat (7) are fixed on the crossbeam between two bearings (1); Inflation end cylinder (2) is housed on the described inflation end seat (3), connects pneumatic head (4) on the piston rod that inflation end cylinder (2) stretches out; Shutoff end cylinder (8) is housed on the described shutoff end seat (7), connects block head (6) on the piston rod that shutoff end cylinder (8) stretches out; Clamp detected titanium welding pipe (16) between block head (6) and the pneumatic head (4); Described pick-up unit is made up of supercharge pump (9), accurate reduction valve (10), vent valve (11), upper inlet valve (13), lower inlet valve (12), high precision differential pressure gauge (14), high pressure gas flexible pipe (15), welded tube (16), standard pipe (17), differential pressure detector (18); Supercharge pump (9) is connected to differential pressure detector (18) through accurate reduction valve (10); The differential pressure detector is divided into two-way in (18), and one the tunnel is linked to standard pipe (17) through lower inlet valve (12), and another road is linked to titanium welding pipe (16) through upper inlet valve (13) and high pressure gas flexible pipe (15); The gas outlet end of upper inlet valve (13) and lower inlet valve (12) is connected with high precision differential pressure gauge (14); The air intake opening end of upper inlet valve (13) is connected with vent valve (11).
2. titanium welding pipe airtight test machine according to claim 1, supercharge pump when it is characterized in that detecting (9) is pressurized to low-pressure air the high pressure gas of 1-2MPa, reach the required pressure of airtight detection after accurate reduction valve (10) decompression, be generally 0.5-1MPa, be 3-10 second detection time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100394974A CN102141460A (en) | 2011-02-17 | 2011-02-17 | Airtightness test machine for titanium welded pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100394974A CN102141460A (en) | 2011-02-17 | 2011-02-17 | Airtightness test machine for titanium welded pipes |
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| Publication Number | Publication Date |
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| CN102141460A true CN102141460A (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100394974A Pending CN102141460A (en) | 2011-02-17 | 2011-02-17 | Airtightness test machine for titanium welded pipes |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539089A (en) * | 2011-12-26 | 2012-07-04 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
| CN103487217A (en) * | 2013-09-30 | 2014-01-01 | 中核（天津）机械有限公司 | Automatic plugging device for vacuum leak detection |
| CN103604572A (en) * | 2013-11-06 | 2014-02-26 | 安徽皖仪科技股份有限公司 | Leakage detection method for central air conditioner copper tube |
| CN108692869A (en) * | 2018-04-18 | 2018-10-23 | 西安飞机工业（集团）有限责任公司 | A kind of conduit air tightness tester and test method |
| CN109374211A (en) * | 2018-10-10 | 2019-02-22 | 钢控股集团有限公司 | Stainless steel tube leak-checking apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087337U (en) * | 1991-01-17 | 1991-10-23 | 中国科学院合肥智能机械研究所高技术开发公司 | Micro-leakage measuring instrument |
| CN2387526Y (en) * | 1999-03-10 | 2000-07-12 | 杜国山 | Pressure automatic detecting device for steel pipe |
| CN201034798Y (en) * | 2007-03-30 | 2008-03-12 | 齐齐哈尔轨道交通装备有限责任公司 | Braking pipe air tightness test-bed |
| CN202066651U (en) * | 2011-02-17 | 2011-12-07 | 大连三高集团有限公司 | Titanium welded pipe air tightness testing machine |
-
2011
- 2011-02-17 CN CN2011100394974A patent/CN102141460A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087337U (en) * | 1991-01-17 | 1991-10-23 | 中国科学院合肥智能机械研究所高技术开发公司 | Micro-leakage measuring instrument |
| CN2387526Y (en) * | 1999-03-10 | 2000-07-12 | 杜国山 | Pressure automatic detecting device for steel pipe |
| CN201034798Y (en) * | 2007-03-30 | 2008-03-12 | 齐齐哈尔轨道交通装备有限责任公司 | Braking pipe air tightness test-bed |
| CN202066651U (en) * | 2011-02-17 | 2011-12-07 | 大连三高集团有限公司 | Titanium welded pipe air tightness testing machine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539089A (en) * | 2011-12-26 | 2012-07-04 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
| CN102539089B (en) * | 2011-12-26 | 2014-11-05 | 大连三高科技发展有限公司 | Air tightness detection device and detection method thereof |
| CN103487217A (en) * | 2013-09-30 | 2014-01-01 | 中核（天津）机械有限公司 | Automatic plugging device for vacuum leak detection |
| CN103604572A (en) * | 2013-11-06 | 2014-02-26 | 安徽皖仪科技股份有限公司 | Leakage detection method for central air conditioner copper tube |
| CN108692869A (en) * | 2018-04-18 | 2018-10-23 | 西安飞机工业（集团）有限责任公司 | A kind of conduit air tightness tester and test method |
| CN109374211A (en) * | 2018-10-10 | 2019-02-22 | 钢控股集团有限公司 | Stainless steel tube leak-checking apparatus |
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Application publication date: 20110803 |