CN106840537A - A kind of helium leak test gas technique - Google Patents
A kind of helium leak test gas technique Download PDFInfo
- Publication number
- CN106840537A CN106840537A CN201710144835.8A CN201710144835A CN106840537A CN 106840537 A CN106840537 A CN 106840537A CN 201710144835 A CN201710144835 A CN 201710144835A CN 106840537 A CN106840537 A CN 106840537A
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- China
- Prior art keywords
- wheel rim
- helium
- tested
- space
- lower seal
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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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention discloses a kind of helium leak test gas technique, and be placed on wheel rim to be tested in lower seal pad by it, and the wheel rim to be tested is separated by its wheel rim and forms inner space and exterior space；Upper sealing gasket cover is located on wheel rim to be tested and is kept apart with by inner space and exterior space, recycle outer cover that wheel rim to be tested and upper sealing gasket are covered set between outer cover and lower seal pad together；In the presence of the first vacuum-pumping tube and the second vacuum-pumping tube, the exterior space between inner space and outer cover and wheel rim is evacuated；Using helium pneumatic head toward being filled with the helium with predetermined pressure in inner space, maintain pressure, again air leakage is detected with the gas leakage testing agency at externally-located space, situation according to air leakage judges whether current test wheel rim is qualified, qualified wheel rim pushes it into qualified streamline, and underproof wheel rim pushes it into unqualified streamline.The present invention can greatly improve the accuracy of wheel rim quality testing.
Description
Technical field
The present invention relates to wheel rim production and processing technology field, a kind of helium leak test gas technique is specifically referred to, it has test
The characteristics of stable performance and testing efficiency high.
Background technology
Wheel rim generally comprises wheel rim, spoke and mounting disc after by casting, the wheel rim in a ring, in order to allow
The wheel rim for forming out meets corresponding national standard, it is necessary to carry out quality testing to the wheel rim of wheel rim, wherein critically important one
Secondary test is exactly to detect wheel rim with the presence or absence of manufacturing deficiency, and the traditional way of this manufacturing deficiency is all to try method, the water using water
During wheel rim of the examination method after by casting is placed on water, by sealing upper two opening, then toward internal insufflation gas, then
Gas is determined whether by way of eye-observation to emerge, this traditional mode of operation, at least in the presence of following defect：
One, is more less for some due to being that by the way of eye-observation, can only often find larger defect
Defect, the mode of human eye is difficult accurate judgement, and so quality to product causes certain uncontrollable factor, influences company pair
Outer quality performance.
Due to being direct and atmosphere outside wheel rim, detected in water actually to imitate two, conventional at present way
The practical application of wheel rim, its actual Detection results are not still especially accurate, there is the space of improvement.
Based on this, the present inventor furthers investigate to this problem, has this case to produce then.
The content of the invention
It is an object of the invention to provide a kind of helium leak test gas technique, it greatly improves the accurate of wheel rim quality testing
Property.
In order to reach above-mentioned purpose, solution of the invention is：
A kind of helium leak test gas technique, wherein, comprise the following steps：
1. treat test wheel rim to be cleaned, dried after cleaning, be put into the porch of test streamline；
2. under the drive of actuating unit, wheel rim to be tested is transported to helium test zone one by one, helium test
Region is provided with lower seal pad, upper sealing gasket, iron plate, outer cover and gas leakage testing agency, and lower seal pad middle part is formed with to be passed through
Through hole, the iron plate is located at lower seal pad lower section, and the iron plate forms helium pneumatic head and first and takes out true in correspondence insertion hole location
Blank pipe, is also formed with the second vacuum-pumping tube on the iron plate；
3. wheel rim to be tested is placed in lower seal pad, the wheel rim to be tested separated by its wheel rim formed inner space and
Exterior space；Upper sealing gasket cover is located on wheel rim to be tested and is kept apart with by inner space and exterior space, recycled outer
Wheel rim to be tested and upper sealing gasket are covered set between outer cover and lower seal pad together by cover；
4. in the presence of the first vacuum-pumping tube and the second vacuum-pumping tube, will be outer between inner space and outer cover and wheel rim
Portion space is evacuated；
5. using helium pneumatic head toward the helium with predetermined pressure is filled with inner space, pressure is maintained, then with position
Gas leakage testing agency detection air leakage at exterior space, the situation according to air leakage judges whether current test wheel rim closes
Lattice, qualified wheel rim pushes it into qualified streamline, and underproof wheel rim pushes it into unqualified streamline.
Further, sealing gasket is formed with sealing surface in the side near wheel rim on this, and the sealing surface is for medium position is high
The cambered surface that side sets low.
After using such scheme, a kind of helium leak test gas technique of the present invention, at least there is following beneficial effect in it：
The one, present invention by pipelining Aulomatizeted Detect, using gas leakage testing agency, according to air leakage number come
Whether detection wheel rim is qualified, and by the different orbit transports of qualified and underproof wheel rim point, realizes full-automatic detection, detection effect
Rate is high, and accuracy is also secure.
The two, present invention realizes internal volume and exterior space while taking out using the first vacuum-pumping tube and the second vacuum-pumping tube
Vacuum, then again toward helium is injected in inner space, such helium can be formed on the pressure side in wheel rim both sides, and wheel rim reality is simulated completely
The pressure differential of border work, realizes the most accurate detection to wheel rim.
Compared with prior art, the present invention provides a kind of helium leak test gas technique, and it can greatly improve the inspection of wheel rim quality
The accuracy of survey, the product quality of enterprise.
Brief description of the drawings
Fig. 1 is the structural representation of wheel rim.
Fig. 2 be the present invention relates to lower seal pad, upper sealing gasket, iron plate, outer cover in a kind of helium leak test gas technique each other it
Between structural relation schematic diagram.
In figure：
Lower seal pad -1；Through hole -11；Upper sealing gasket -2；
Cambered surface -21；Iron plate -3；
Helium pneumatic head -31；First vacuum-pumping tube -32；Second vacuum-pumping tube -33；
Outer cover -4；Gas leakage testing agency -5；Wheel rim -6；
Inner space-S1；Exterior space-S2.
Specific embodiment
This case is described in further detail with reference to the accompanying drawings and detailed description.
As depicted in figs. 1 and 2, a kind of helium leak test gas technique of the present invention, comprises the following steps：
1. treat test wheel rim 6 to be cleaned, dried after cleaning, be put into the porch of test streamline；
2. under the drive of actuating unit, wheel rim to be tested 6 is transported to helium test zone one by one, helium test
Region is provided with lower seal pad 1, upper sealing gasket 2, iron plate 3, outer cover 4 and gas leakage testing agency 5, the middle part shape of lower seal pad 1
Into there is through hole 11, the iron plate 3 is located at the lower section of lower seal pad 1, and the iron plate 3 forms helium inflation at correspondence through hole 11 position
First 31 and first vacuum-pumping tube 32, the second vacuum-pumping tube 33 is also formed with the iron plate 3；
3. wheel rim to be tested 6 is placed in lower seal pad 1, the wheel rim to be tested 6 is separated by its wheel rim and forms internal sky
Between S1 and exterior space S2；The lid of upper sealing gasket 2 is located on wheel rim to be tested 6 and is isolated with by internal space S 1 and exterior space S2
Come, recycle outer cover 4 to cover wheel rim to be tested 6 and upper sealing gasket 2 together and set between outer cover 4 and lower seal pad 1；
4. in the presence of the first vacuum-pumping tube 32 and the second vacuum-pumping tube 33, by internal space S 1 and outer cover 4 and wheel rim 6
Between exterior space S2 be evacuated；
5. pressure is maintained toward the helium with predetermined pressure is filled with internal space S 1 using helium pneumatic head 31, then
Air leakage is detected with the gas leakage testing agency 5 at externally-located space S 2, the situation according to air leakage judges current test wheel rim 6
Whether qualified, qualified wheel rim 6 pushes it into qualified streamline, and underproof wheel rim 6 pushes it into unqualified streamline.
Preferably, sealing gasket 2 is formed with sealing surface in the side near wheel rim 6 on this, and the sealing surface is that medium position is high
And the cambered surface 21 that side sets low, using this cambered surface 21, so when the diameter of wheel rim 6 is different, sealing gasket 2 is without more on this
Change, can match completely it is applicable, lower seal pad 1 due to being flat plate pad, therefore with the strong effect of adaptability.
So, at least there is following beneficial effect in the present invention：
The one, present invention by pipelining Aulomatizeted Detect, using gas leakage testing agency 5, according to air leakage number
To detect whether wheel rim 6 is qualified, and by qualified with 6 points of different orbit transports of underproof wheel rim, full-automatic detection, inspection are realized
Ultrahigh in efficiency is surveyed, and accuracy is also secure.
The two, present invention realizes internal volume S1 and exterior space using the first vacuum-pumping tube 32 and the second vacuum-pumping tube 33
S2 is vacuumized simultaneously, and then again toward helium is injected in internal space S 1, such helium can be formed on the pressure side in the both sides of wheel rim 6, complete
The pressure differential of the full simulation real work of wheel rim 6, realizes the most accurate detection to wheel rim 6.
Compared with prior art, the present invention provides a kind of helium leak test gas technique, and it can greatly improve the inspection of the mass of wheel rim 6
The accuracy of survey, the product quality of enterprise.
The foregoing is only the preferred embodiments of the present invention, all impartial changes done with scope of the invention as claimed and
Modification, all should belong to the scope of the claims in the present invention.
Claims (2)
1. a kind of helium leak test gas technique, it is characterised in that comprise the following steps：
1. treat test wheel rim to be cleaned, dried after cleaning, be put into the porch of test streamline；
2. under the drive of actuating unit, wheel rim to be tested is transported to helium test zone one by one, the helium test zone
Lower seal pad, upper sealing gasket, iron plate, outer cover and gas leakage testing agency are provided with, lower seal pad middle part is formed with through hole,
The iron plate is located at lower seal pad lower section, and the iron plate forms helium pneumatic head and the first vacuum-pumping tube in correspondence insertion hole location,
The second vacuum-pumping tube is also formed with the iron plate；
3. wheel rim to be tested is placed in lower seal pad, the wheel rim to be tested is separated by its wheel rim and forms inner space and outside
Space；Upper sealing gasket cover is located on wheel rim to be tested and is kept apart with by inner space and exterior space, recycling outer cover will
Wheel rim to be tested and upper sealing gasket cover set between outer cover and lower seal pad together；
4. in the presence of the first vacuum-pumping tube and the second vacuum-pumping tube, will be outside empty between inner space and outer cover and wheel rim
Between be evacuated；
5. using helium pneumatic head toward the helium with predetermined pressure is filled with inner space, pressure is maintained, then with positioned at outer
Gas leakage testing agency detection air leakage at portion space, the situation according to air leakage judges whether current test wheel rim is qualified, closes
The wheel rim of lattice pushes it into qualified streamline, and underproof wheel rim pushes it into unqualified streamline.
2. a kind of helium leak test gas technique as claimed in claim 1, it is characterised in that sealing gasket is near the one of wheel rim on this
Side is formed with sealing surface, the sealing surface cambered surface that side sets low for medium position is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710144835.8A CN106840537A (en) | 2017-03-13 | 2017-03-13 | A kind of helium leak test gas technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710144835.8A CN106840537A (en) | 2017-03-13 | 2017-03-13 | A kind of helium leak test gas technique |
Publications (1)
| Publication Number | Publication Date |
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| CN106840537A true CN106840537A (en) | 2017-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710144835.8A Pending CN106840537A (en) | 2017-03-13 | 2017-03-13 | A kind of helium leak test gas technique |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247131Y (en) * | 2008-08-26 | 2009-05-27 | 齐诺精密***自动化(天津)有限公司 | Air tightness detection system for alloy wheel rim |
| CN203275034U (en) * | 2013-04-25 | 2013-11-06 | 天津戴卡轮毂制造有限公司 | Automatic detection device for leakage test of helium |
| CN103900771A (en) * | 2014-03-18 | 2014-07-02 | 浙江万丰摩轮有限公司 | Method for detecting air impermeability of aluminum alloy rim of motorcycle |
| CN104614134A (en) * | 2015-02-03 | 2015-05-13 | 中信戴卡股份有限公司 | Aluminum alloy hub air-tightness detection device and hub air-tightness detection method |
| CN106370361A (en) * | 2016-08-24 | 2017-02-01 | 内蒙古华唐伟业再生资源有限公司 | Aluminum alloy wheel hub key technological parameter detection system |
-
2017
- 2017-03-13 CN CN201710144835.8A patent/CN106840537A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247131Y (en) * | 2008-08-26 | 2009-05-27 | 齐诺精密***自动化(天津)有限公司 | Air tightness detection system for alloy wheel rim |
| CN203275034U (en) * | 2013-04-25 | 2013-11-06 | 天津戴卡轮毂制造有限公司 | Automatic detection device for leakage test of helium |
| CN103900771A (en) * | 2014-03-18 | 2014-07-02 | 浙江万丰摩轮有限公司 | Method for detecting air impermeability of aluminum alloy rim of motorcycle |
| CN104614134A (en) * | 2015-02-03 | 2015-05-13 | 中信戴卡股份有限公司 | Aluminum alloy hub air-tightness detection device and hub air-tightness detection method |
| US20160223425A1 (en) * | 2015-02-03 | 2016-08-04 | Citic Dicastal Co., Ltd | Air tightness detection device for aluminum alloy wheel hub and method for detecting air tightness of wheel hub |
| CN106370361A (en) * | 2016-08-24 | 2017-02-01 | 内蒙古华唐伟业再生资源有限公司 | Aluminum alloy wheel hub key technological parameter detection system |
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Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |