CN103604486B - The calibration steps of pack alloy part micro-leakage detection and device - Google Patents
The calibration steps of pack alloy part micro-leakage detection and device Download PDFInfo
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- CN103604486B CN103604486B CN201310577341.0A CN201310577341A CN103604486B CN 103604486 B CN103604486 B CN 103604486B CN 201310577341 A CN201310577341 A CN 201310577341A CN 103604486 B CN103604486 B CN 103604486B
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- leak detector
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 19
- 239000000956 alloy Substances 0.000 title claims abstract description 19
- 210000003437 trachea Anatomy 0.000 claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 14
- 230000005587 bubbling Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 abstract description 2
- 238000013102 re-test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The present invention relates to Machining Technology field, disclose calibration steps and the device of a kind of pack alloy part trace leak detection.Leak detector, frock clamp, master body, speed-regulating valve and trachea are sequentially connected with, governing speed regulation valve makes the at the uniform velocity bubbling in water of the trachea port of export, then the trachea port of export is stretched in the graduated cylinder standing upside down and filling water, record master body unit interval capacity V1；By in trachea port of export removal water, open leak detector automatically to detect, obtain capacity and the frock clamp of master body unit interval and to be connected to the leakage rate sum of unit interval be V2, then frock clamp and to be connected to the leakage rate of unit interval be V2 V1, calibrates leak detector according to above-mentioned test result.The method of the present invention can accurate alignment leak detector, it is ensured that Al-alloy parts amount of leakage is detected accurately, it is to avoid test error and the waste that causes.
Description
Technical field
The present invention relates to Machining Technology field, specifically a kind of pack alloy part micro-leakage inspection
The calibration steps surveyed and device.
Background technology
Aluminium alloy automobile parts, such as electromotor, change speed gear box etc., are internally provided with passage, at Die Casting
The most typically its amount of leakage is detected.Generally using leak detector to detect, Al-alloy parts is arranged on frock
On fixture, frock clamp being offered an exhaust duct, one end of this exhaust duct and channel connection, the other end leads to
Piping is connected with leak detector, opens leak detector and detects.
Frock clamp can not be accomplished to fully seal in actual applications, has certain leakage.It addition,
After frock clamp uses the long period with pipeline, the connection of frock clamp and frock clamp inherently there will be always
Change, affect the precision of whole frock clamp, cause letting out of leakage rate that leak detector measures and Al-alloy parts itself
Dew amount is inconsistent.Especially when the leakage rate required precision height of Al-alloy parts, as at below 1CC/min, need
Amount of leakage detection calibrated, otherwise, defective work outflow market or certified products will be caused to scrap
Situation occurs, causes unnecessary waste.
At present, the calibration of leak detector can only be for the leakage rate of its instrument, can not be to integrated tooling fixture
Leakage rate is calibrated accurately.
Summary of the invention
The problem that the present invention is directed to above-mentioned existence, it is provided that the school of a kind of pack alloy part micro-leakage detection
Standard apparatus.
The present invention for achieving the above object, takes techniques below scheme to be achieved:
A kind of pack alloy part micro-leakage detection calibrating installation, including leak detector, in set exhaust duct
Frock clamp, in set passage and its volume master body consistent with Al-alloy parts, speed-regulating valve, trachea
With stand upside down and fill the graduated cylinder of water, described master body is arranged on frock clamp and one end of its passage and row
One end connection of air flue, the other end of described exhaust duct passes through pipeline communication leak detector, and described master body leads to
The other end Negotiation speed regulation valve in road connect with trachea, the trachea port of export and handstand and fill the graduated cylinder company of water
Connect.
Due to detection is the micro-leakage of Al-alloy parts, so needing to select the regulation of flow less speed
Valve.Preferably, the flow of described speed-regulating valve is 20L/min.
Preferably, the degree of accuracy of described graduated cylinder is 0.1ml.
The diameter of trachea is usually no more than 5mm, it is preferable that described tracheal diameter is 3mm.Because trachea is straight
Footpath is the biggest, and in the case of flow is certain, the gas that graduated cylinder is collected within the unit interval is let out with real gas
The error of leakage quantity will be the biggest.
Another object of the present invention is to provide a kind of pack alloy part micro-leakage using said apparatus
The calibration steps of detection, comprises the following steps:
(1) open leak detector manually to detect, testing standard exemplar unit interval capacity, be designated as V1；
(2) open leak detector automatically to detect, the capacity of testing standard exemplar unit interval and frock clamp
And it is connected to the leakage rate sum of unit interval, it is designated as V2, then frock clamp and when being connected to unit
Between leakage rate V=V2-V1；
(3) leak detector is calibrated according to above-mentioned test result.
Step (1) is pre-adjusted speed-regulating valve and makes the at the uniform velocity bubbling in water of the trachea port of export, then will
The trachea port of export stretches in the graduated cylinder standing upside down and filling water, collects the gas of certain time t, and gross exhaust gas is
V3, then master body unit interval capacity V1=V3/t.
In actual application, the volume of master body is ± 0.05ml with the error of Al-alloy parts volume.Standard sample
The test of part unit interval capacity is typically repeated test 3～5 times, calculates meansigma methods.
In step (2), the trachea port of export being removed the water surface, leak detector automatically detects and obtains master body unit
The capacity of time and frock clamp and be connected to leakage rate sum V2 of unit interval, this test is general
Also retest 3～5 times, calculate meansigma methods.
Beneficial effects of the present invention is as follows: the calibration steps of pack alloy part micro-leakage of the present invention detection,
Initially with leak detector manual test master body unit interval capacity V1, in this test process, have
Portion gas is leaked out by frock clamp and connection thereof；Then, during measuring unit automatic by leak detector
Between leakage rate V2, V2 is i.e. master body and frock clamp and the leakage rate of connection unit interval thereof, because of
This, frock clamp and the leakage rate connecting the unit interval thereof are V2-V1 such that it is able to accurate alignment leak detector,
Ensure that Al-alloy parts amount of leakage is detected accurately, it is to avoid test error and the waste that causes.
Accompanying drawing explanation
Fig. 1 is the structural representation of the calibrating installation of pack alloy part micro-leakage of the present invention detection；
Fig. 2 is the structural representation that in embodiment 2, leak detector detects automatically.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated.
Embodiment 1
See Fig. 1: a kind of pack alloy part micro-leakage detection calibrating installation, including leak detector 10,
Frock clamp 20, master body 30, speed-regulating valve 40, trachea 50, graduated cylinder 70 and water tank 80, work
Set exhaust duct 201 in clamps 20, in master body 30, set passage 301 and its volume and Al-alloy parts one
Causing, master body 30 is arranged on frock clamp 20, and one end of its passage 301 and exhaust duct 201
One end connection, exhaust duct 201 other end connects leak detector 10, master body passage 301 by pipeline 60
Other end Negotiation speed regulation valve 40 connects with trachea 50, and graduated cylinder 70 is filled water and stands upside down at water tank 80
In, trachea 50 port of export is connected with graduated cylinder 70.The degree of accuracy of graduated cylinder 70 is preferably 0.1ml.
Due to detection is the micro-leakage of Al-alloy parts, so needing to select the regulation of flow less speed
Valve.The flow of speed-regulating valve 40 is preferably 20L/min.
The diameter of trachea 50 is usually no more than 5mm, and trachea 50 diameter is preferably 3mm.Because trachea 50
Diameter is the biggest, in the case of flow is certain, and graduated cylinder is collected within the unit interval gas and real gas
The error of leakage rate will be the biggest.
Embodiment 2
See Fig. 1, Fig. 2, the calibration steps of a kind of pack alloy part micro-leakage detection, use and implement
Device described in example 1 realizes, and comprises the following steps:
(1) open leak detector 10 manually to detect, testing standard exemplar 30 unit interval capacity, be designated as
V1；
(2) open leak detector 10 automatically to detect, the capacity of testing standard exemplar 30 unit interval and work
Clamps 20 and be connected to the leakage rate sum of unit interval, is designated as V2, then frock clamp 20 and
It is connected to leakage rate V=V2-V1 of unit interval；
(3) leak detector 10 is calibrated according to above-mentioned test result.
Step (1) is pre-adjusted speed-regulating valve 40 and makes the at the uniform velocity bubbling in water of trachea 50 port of export,
Then trachea 50 port of export is stretched in the graduated cylinder 70 standing upside down and filling water, collects the gas of certain time t,
Gross exhaust gas is V3, then master body 30 unit interval capacity V1=V3/t.
In actual application, the volume of master body 30 is ± 0.05ml with the error of Al-alloy parts volume.Mark
The test of quasi-exemplar 30 unit interval capacity is typically repeated test 3～5 times, calculates meansigma methods.
In step (2), trachea 50 port of export being removed the water surface, leak detector 10 automatically detects and obtains standard sample
The capacity of part 30 unit interval and frock clamp 20 and be connected to leakage rate sum V2 of unit interval,
The general the most also retest 3 of this test～5 times, calculate meansigma methods.
The calibration steps of pack alloy part micro-leakage of the present invention detection, initially with leak detector manual test
Master body unit interval capacity V1, in this test process, have portion gas pass through frock clamp and
Its connection leaks out；Then, by leakage rate V2 of leak detector automatic measuring unit time, V2 is i.e.
Master body and frock clamp and the leakage rate of connection unit interval thereof, therefore, frock clamp and connect single
The leakage rate of bit time is V2-V1 such that it is able to accurate alignment leak detector, it is ensured that Al-alloy parts amount of leakage obtains
To detecting accurately, it is to avoid test error and the waste that causes.
Only as described above, only the preferred embodiments of the invention, when can not with this limit the present invention it
Scope, the most generally according to equivalence change simple done by the content described in the claims in the present invention and description
With modification, all it is still covered by the claims of the invention.Additionally, summary part and title are only
It is used for assisting patent document search to be used, is not used for limiting the interest field of the present invention.
Claims (6)
1. the calibration steps of a pack alloy part micro-leakage detection, it is characterised in that
Use pack alloy part micro-leakage detection calibrating installation, including leak detector, in set exhaust duct
Frock clamp, in set passage and its volume master body consistent with Al-alloy parts, speed-regulating valve, trachea
With stand upside down and fill the graduated cylinder of water, described master body is arranged on frock clamp and one end of its passage and row
One end connection of air flue, the other end of described exhaust duct passes through pipeline communication leak detector, and described master body leads to
The other end Negotiation speed regulation valve in road connect with trachea, the trachea port of export and handstand and fill the graduated cylinder company of water
Connect；
Comprise the following steps:
(1) open leak detector manually to detect, testing standard exemplar unit interval capacity, be designated as V1；
(2) open leak detector automatically to detect, the capacity of testing standard exemplar unit interval and frock clamp
And it is connected to the leakage rate sum of unit interval, it is designated as V2, then frock clamp and when being connected to unit
Between leakage rate V=V2-V1；
(3) leak detector is calibrated according to above-mentioned test result.
The calibration steps of a kind of pack alloy part micro-leakage the most according to claim 1 detection,
It is characterized in that, step (1) is pre-adjusted speed-regulating valve and makes the at the uniform velocity bubbling in water of the trachea port of export,
Then the trachea port of export is stretched in the graduated cylinder standing upside down and filling water, collect the gas of certain time t, always arrange
Tolerance is V3, then master body unit interval capacity V1=V3/t.
The calibration steps of a kind of pack alloy part micro-leakage the most according to claim 1 detection,
It is characterized in that, in step (2), the trachea port of export being removed the water surface, leak detector automatically detects and obtains standard
The capacity of exemplar unit interval and frock clamp and be connected to leakage rate sum V2 of unit interval.
The calibration steps of a kind of pack alloy part micro-leakage the most according to claim 1 detection,
It is characterized in that, the flow of described speed-regulating valve is 20L/min.
The calibration steps of a kind of pack alloy part micro-leakage the most according to claim 1 detection,
It is characterized in that, the degree of accuracy of described graduated cylinder is 0.1ml.
The calibration steps of a kind of pack alloy part micro-leakage the most according to claim 1 detection,
It is characterized in that, described tracheal diameter is 3mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310577341.0A CN103604486B (en) | 2013-11-18 | 2013-11-18 | The calibration steps of pack alloy part micro-leakage detection and device |
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| CN201310577341.0A CN103604486B (en) | 2013-11-18 | 2013-11-18 | The calibration steps of pack alloy part micro-leakage detection and device |
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| CN103604486B true CN103604486B (en) | 2016-08-17 |
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| WO2019227402A1 (en) * | 2018-05-31 | 2019-12-05 | Goertek Inc. | Test device and calibrating method |
| CN111964851B (en) * | 2020-04-03 | 2022-06-17 | 中国科学院空天信息创新研究院 | Aerostat valve airtightness detection system and detection method |
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| CN1880936A (en) * | 2005-06-17 | 2006-12-20 | 浙江工业大学 | High precision micro-gas leakage detector |
| CN201464140U (en) * | 2009-07-30 | 2010-05-12 | 上海新沪电机厂有限公司 | Device by using air pressure to detect air tightness of product |
| CN202066646U (en) * | 2011-04-22 | 2011-12-07 | 昆山诠能精密铸造有限公司 | Airtight leak detector for precision castings |
| CN202885918U (en) * | 2012-02-06 | 2013-04-17 | 江苏东方航天校准检测有限公司 | Portable gas micro flow calibrating device |
| CN103376188A (en) * | 2012-04-18 | 2013-10-30 | 天纳克-埃贝赫（大连）排气系统有限公司 | Apparatus for detecting airtight leakage detector by using airtight limit sample |
| RU129223U1 (en) * | 2012-05-22 | 2013-06-20 | Закрытое акционерное общество "Пензенское конструкторско-технологическое бюро арматуростроения" | DEVICE FOR CALIBRATING A SYSTEM FOR DETERMINING A LEAKAGE OF A TEST ENVIRONMENT |
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Application publication date: 20140226 Assignee: GUANGDONG HONGTAI NANTONG PRECISION TECHNOLOGY CO., LTD. Assignor: Guangdong Hongtai Technology Co.,Ltd. Contract record no.: 2017440000071 Denomination of invention: Method and device for calibrating trace leakage detection of aluminum alloy die casting Granted publication date: 20160817 License type: Exclusive License Record date: 20170314 |
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Denomination of invention: Method and device for calibrating trace leakage detection of aluminum alloy die casting Effective date of registration: 20200622 Granted publication date: 20160817 Pledgee: Zhaoqing Rural Commercial Bank Co., Ltd. Nan'an sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2020440000155 |
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Date of cancellation: 20220519 Granted publication date: 20160817 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Nan'an sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2020440000155 |
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Denomination of invention: Calibration method and device for micro leakage detection of die casting aluminum alloy parts Effective date of registration: 20220524 Granted publication date: 20160817 Pledgee: Zhaoqing Rural Commercial Bank Co.,Ltd. Gaoyao sub branch Pledgor: GUANGDONG HONGTAI TECHNOLOGY (HOLDING) Co.,Ltd. Registration number: Y2022980006294 |
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