CN106840537A - A kind of helium leak test gas technique - Google Patents

A kind of helium leak test gas technique Download PDF

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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
Authority
CN
China
Prior art keywords
wheel rim
helium
tested
inner space
lower seal
Prior art date
Application number
CN201710144835.8A
Other languages
Chinese (zh)
Inventor
吴金彻
Original Assignee
福建申利卡铝业发展有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 福建申利卡铝业发展有限公司 filed Critical 福建申利卡铝业发展有限公司
Priority to CN201710144835.8A priority Critical patent/CN106840537A/en
Publication of CN106840537A publication Critical patent/CN106840537A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating 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

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

A kind of helium leak test gas technique

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.
CN201710144835.8A 2017-03-13 2017-03-13 A kind of helium leak test gas technique CN106840537A (en)

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)

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CN106840537A true CN106840537A (en) 2017-06-13

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201247131Y (en) * 2008-08-26 2009-05-27 齐诺精密系统自动化(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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201247131Y (en) * 2008-08-26 2009-05-27 齐诺精密系统自动化(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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