CN110285938A - Plastics weldment airtightness measurement device and its measurement method - Google Patents
Plastics weldment airtightness measurement device and its measurement method Download PDFInfo
- Publication number
- CN110285938A CN110285938A CN201910613780.XA CN201910613780A CN110285938A CN 110285938 A CN110285938 A CN 110285938A CN 201910613780 A CN201910613780 A CN 201910613780A CN 110285938 A CN110285938 A CN 110285938A
- Authority
- CN
- China
- Prior art keywords
- valve
- pressure
- air
- measurement device
- product
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 26
- 229920003023 plastic Polymers 0.000 title claims abstract description 19
- 239000004033 plastic Substances 0.000 title claims abstract description 19
- 238000000691 measurement method Methods 0.000 title description 4
- 238000012360 testing method Methods 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 4
- 230000004927 fusion Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 102100021923 Prolow-density lipoprotein receptor-related protein 1 Human genes 0.000 description 1
- 101710202113 Prolow-density lipoprotein receptor-related protein 1 Proteins 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
Classifications
-
- 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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The present invention provides a kind of plastics weldment airtightness measurement devices, and including an air accumulator, the pressure regulator valve that is set to air accumulator inlet end, the proportioning valve for being set to air accumulator outlet side, one end of the proportioning valve is connect by shut-off valve with pressure sensor.The beneficial effects of the present invention are embodied in: it can be very good the test of progress plastic part air-tightness using the device of the invention, and good test effect, well instead of external detection device expensive in the prior art, testing cost greatly reduces, actual cost reduces about 80%.
Description
Technical field
The invention belongs to air-leakage test technical fields, and in particular to a kind of plastics weldment airtightness measurement device and
Its measurement method.
Background technique
With the improvement of people's life quality, automobile has become walking-replacing tool indispensable in people's life.Vapour
Vehicle deputy tank is a component part of engine-cooling system, plays the role of a balanced reservoir pressure.Automobile deputy tank
Main function is when engine temperature is high, and liquid expansion, a part of anti-icing fluid enters deputy tank by tank lid subflow；Work as temperature
When decline, when cooling system pressure is negative value, the anti-icing fluid of deputy tank is sucked cooling system by tank lid by system.It is secondary simultaneously
There is corresponding scale above water tank, indicates the height of liquid level, the water situation that can intuitively instruct water tank current, if fill
Foot.Existing deputy tank is substantially the plastic containers being fabricated to by welding method, but needs specifically after the completion of welding
Equipment detects the air-tightness of welded vessel, can just come into operation after up to standard.Existing detection is all the leak-testing using standard
Instrument detection, but existing standard leak tester is entirely the foreign brand name of import, and price is very high, at high cost.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of plastics weldment airtightness measurement device and its
Measurement method.
The purpose of the present invention is achieved through the following technical solutions:
Plastics weldment airtightness measurement device including an air accumulator, the pressure regulator valve that is set to air accumulator inlet end, is set to
One end of the proportioning valve of air accumulator outlet side, the proportioning valve is connect by shut-off valve with pressure sensor.
Preferably, two-position three-way valve is provided between the pressure regulator valve and the shut-off valve.
Preferably, the pressure regulator valve is air vent valve.
Preferably, the proportioning valve is electric Proportion valve.
Preferably, the pressure sensor is connect with product to be detected.
Preferably, the test method of plastics weldment airtightness measurement device described in any of the above one, including it is as follows
Step:
S1, compressed air first pass around manual pressure regulating valve and are depressured；
S2, the compressed air after being depressured are stored in air accumulator, so that compressed air is no longer influenced by ambient pressure change in pipeline
Change, keeps the stabilization of air pressure；
S3, by electric Proportion valve be adjusted to test needed for air pressure tested: aeration phase, pass through two-position three-way valve control cut
Only valve is opened, and compressed air enters product；After the completion of aeration phase, two-position three-way valve controls shut-off valve and closes；Packing stage,
Air fusion in product becomes stable, and by air pressure in the pressure sensor real time measurement product that connect with product, passes through meter
Calculate measurement start and at the end of pressure change so that it is determined that product air-tightness.
Preferably, determine that products air tightness includes the following steps: in the S3
S31, when measuring phases start, pressure sensor detects that pressure is P0, and pressure sensor detects at the end of measuring phases
To pressure be P1 when, measure front and back pressure difference be Δ P=P1-P0；According to formulaIt can calculate
Obtain leakage rate, wherein F is leakage rate, and V is test part volume.
The beneficial effects of the present invention are embodied in: it can be very good the survey of progress plastic part air-tightness using the device of the invention
Examination, and good test effect, well instead of external detection device expensive in the prior art, greatly reduce detection at
This, actual cost reduces about 80%.
Detailed description of the invention
Fig. 1: attachment structure schematic diagram of the invention.
Fig. 2: pressure change curve under three phases of the present invention when detecting air-tightness.
When Fig. 3: being detected using measuring device of the present invention and is tested using existing standard test instrument needed for detection cycle
Time comparison.
Specific embodiment
Present invention discloses a kind of plastics weldment airtightness measurement devices, as shown in connection with fig. 1, including an air accumulator 2,
The inlet end of the air accumulator 2 is provided with air vent valve 1, and the outlet side of the air accumulator 2 is provided with electric Proportion valve 3, institute
The one end for stating electric Proportion valve 3 is connect by shut-off valve 5 with pressure sensor, and the pressure sensor and product to be detected connect
It connects, for the pressure in testing product at any time.Meanwhile in order to enable the precision of sensor is preferably guaranteed, the sensing
Device is connect with check block.It is provided with two-position three-way valve 4 between the air vent valve 1 and the shut-off valve 5, for preferably right
The opening and closing of shut-off valve 5 are controlled.
To reach better detection effect, all parts model being applied in the present invention is as shown in the table:
| Component names | Brand | Model |
| Pressure reducing valve | FESTO | LRP-1/4-2,5 |
| Air accumulator | FESTO | CRVZS-2 |
| Electric Proportion valve | FESTO | VPPM-6L-L-1-G18-0L6H-A4P-C1 |
| Two-position three-way valve and shut-off valve | Burkert | 178601/429112 |
| Pressure sensor | WIKA | P-30,0-0.25MPa Gauge,0-20mA,9-30V DC Accurcy:0.05% of span |
| Check block | ATEQ | 1Bar 20ml/Min |
。
Present invention further teaches a kind of plastics weldment test methods of airtightness measurement device, include the following steps:
S1, compressed air first pass around manual pressure regulating valve and are depressured；
S2, the compressed air after being depressured are stored in air accumulator, so that compressed air is no longer influenced by ambient pressure change in pipeline
Change, keeps the stabilization of air pressure；
S3, by electric Proportion valve be adjusted to test needed for air pressure tested, be specifically divided into three phases, respectively inflate
Stage, packing stage and test phase, the pressure change that each stage generates is as shown in Fig. 2, the device in through the invention controls
The step of test method includes,
Aeration phase controls shut-off valve by two-position three-way valve and opens, and compressed air enters product；After the completion of aeration phase,
Two-position three-way valve controls shut-off valve and closes；Packing stage, the air fusion in product become stable, and pass through the pressure connecting with product
Air pressure in force snesor real time measurement product, by calculate measurement start and at the end of pressure change so that it is determined that product it is airtight
Property.
Wherein, determine that products air tightness includes the following steps: in the S3
S31, when measuring phases start, pressure sensor detects that pressure is P0, and pressure sensor detects at the end of measuring phases
To pressure be P1 when, measure front and back pressure difference be Δ P=P1-P0；According to formulaIt can calculate
Obtain leakage rate, wherein F is leakage rate, and V is test part volume.
The following provide the experimental datas for the validity of detection device in the preferably verifying present invention:
It is as shown in table 1 using existing standard test instrument measurement data, using measuring device measurement data of the invention such as 2 institute of table
Show.The results show that using in the market standard leak tester with the present invention in measuring device test result it is almost the same, and
It is relatively stable.
Table 1: existing standard test instrument measurement data
。
Table 2: measuring device measurement data of the invention
。
In order to test using measuring device of the present invention detect needed for the period whether with standard test instrument in the prior art inspection
The period is surveyed compared to having an impact, then, the experiment of specific test period has been carried out, as shown in figure 3, the results show that detection cycle
It is completely constant.Therefore, it was demonstrated that the effective and practicability of measuring device in the present invention.
Meanwhile the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to aforementioned reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features；And these are modified
Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (7)
1. plastics weldment airtightness measurement device, it is characterised in that: including an air accumulator, be set to air accumulator inlet end
One end of pressure regulator valve, the proportioning valve for being set to air accumulator outlet side, the proportioning valve is connect by shut-off valve with pressure sensor.
2. plastics weldment airtightness measurement device as described in claim 1, it is characterised in that: the pressure regulator valve with it is described
Two-position three-way valve is provided between shut-off valve.
3. plastics weldment airtightness measurement device as described in claim 1, it is characterised in that: the pressure regulator valve is pneumatic
Pressure regulator valve.
4. plastics weldment airtightness measurement device as described in claim 1, it is characterised in that: the proportioning valve is electrical
Proportioning valve.
5. plastics weldment airtightness measurement device as described in claim 1, it is characterised in that: the pressure sensor with
Product connection to be detected.
6. the test method of the plastics weldment airtightness measurement device as described in claim 1-5 is any one, feature exist
In: include the following steps:
S1, compressed air first pass around manual pressure regulating valve and are depressured；
S2, the compressed air after being depressured are stored in air accumulator, so that compressed air is no longer influenced by ambient pressure change in pipeline
Change, keeps the stabilization of air pressure；
S3, by electric Proportion valve be adjusted to test needed for air pressure tested: aeration phase, pass through two-position three-way valve control cut
Only valve is opened, and compressed air enters product；After the completion of aeration phase, two-position three-way valve controls shut-off valve and closes；Packing stage,
Air fusion in product becomes stable, and by air pressure in the pressure sensor real time measurement product that connect with product, passes through meter
Calculate measurement start and at the end of pressure change so that it is determined that product air-tightness.
7. the test method of plastics weldment airtightness measurement device as claimed in claim 6, it is characterised in that: the S3
Middle determining products air tightness includes the following steps:
S31, when measuring phases start, pressure sensor detects that pressure is P0, and pressure sensor detects at the end of measuring phases
To pressure be P1 when, measure front and back pressure difference be Δ P=P1-P0；According to formulaIt can calculate
Obtain leakage rate, wherein F is leakage rate, and V is test part volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613780.XA CN110285938A (en) | 2019-07-09 | 2019-07-09 | Plastics weldment airtightness measurement device and its measurement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910613780.XA CN110285938A (en) | 2019-07-09 | 2019-07-09 | Plastics weldment airtightness measurement device and its measurement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110285938A true CN110285938A (en) | 2019-09-27 |
Family
ID=68021049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910613780.XA Pending CN110285938A (en) | 2019-07-09 | 2019-07-09 | Plastics weldment airtightness measurement device and its measurement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110285938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238744A (en) * | 2020-02-13 | 2020-06-05 | 雅化锂业(雅安)有限公司 | Method for detecting air tightness of air storage tank |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN204085818U (en) * | 2014-09-16 | 2015-01-07 | 宁波慈兴轴承有限公司 | Sealing bearing leakage testing device |
| CN105241617A (en) * | 2015-11-12 | 2016-01-13 | 中国人民解放军海军航空工程学院青岛校区 | Floating life-saving equipment air-tightness inspection instrument and inspection method |
| CN205157139U (en) * | 2015-11-26 | 2016-04-13 | 上海市计量测试技术研究院 | Leak rate detection device of malleation standard leak |
| US20180328812A1 (en) * | 2015-12-14 | 2018-11-15 | Fukuda Co., Ltd. | Apparatus and Method for Leak Testing |
| CN109506924A (en) * | 2018-12-27 | 2019-03-22 | 宁波加凯汽车部件有限公司 | Coolant liquid pot lid detection device and its detection method |
| CN208887869U (en) * | 2018-11-06 | 2019-05-21 | 四川科志人防设备股份有限公司 | A kind of automatic air tightness detecting system |
| CN109900442A (en) * | 2017-12-07 | 2019-06-18 | 曼胡默尔滤清器（上海）有限公司 | A kind of air-distributor vacuum actuator leakage test device and test method |
| CN210269078U (en) * | 2019-07-09 | 2020-04-07 | 劳士领汽车配件（昆山）有限公司 | Air tightness measuring device for plastic welding part |
-
2019
- 2019-07-09 CN CN201910613780.XA patent/CN110285938A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201532292U (en) * | 2009-09-11 | 2010-07-21 | 彭光正 | Pneumatic circuit of multifunctional gas-tightness detector |
| CN204085818U (en) * | 2014-09-16 | 2015-01-07 | 宁波慈兴轴承有限公司 | Sealing bearing leakage testing device |
| CN105241617A (en) * | 2015-11-12 | 2016-01-13 | 中国人民解放军海军航空工程学院青岛校区 | Floating life-saving equipment air-tightness inspection instrument and inspection method |
| CN205157139U (en) * | 2015-11-26 | 2016-04-13 | 上海市计量测试技术研究院 | Leak rate detection device of malleation standard leak |
| US20180328812A1 (en) * | 2015-12-14 | 2018-11-15 | Fukuda Co., Ltd. | Apparatus and Method for Leak Testing |
| CN109900442A (en) * | 2017-12-07 | 2019-06-18 | 曼胡默尔滤清器（上海）有限公司 | A kind of air-distributor vacuum actuator leakage test device and test method |
| CN208887869U (en) * | 2018-11-06 | 2019-05-21 | 四川科志人防设备股份有限公司 | A kind of automatic air tightness detecting system |
| CN109506924A (en) * | 2018-12-27 | 2019-03-22 | 宁波加凯汽车部件有限公司 | Coolant liquid pot lid detection device and its detection method |
| CN210269078U (en) * | 2019-07-09 | 2020-04-07 | 劳士领汽车配件（昆山）有限公司 | Air tightness measuring device for plastic welding part |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111238744A (en) * | 2020-02-13 | 2020-06-05 | 雅化锂业(雅安)有限公司 | Method for detecting air tightness of air storage tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202008429U (en) | Air tightness detector | |
| CN201965006U (en) | Lithium ion battery differential pressure formula leak hunting device | |
| CN2938055Y (en) | Device for detecting leakage of central air-conditioning pipeline system by differential pressure | |
| US9429493B2 (en) | Manifold assembly for a portable leak tester | |
| CN109238597B (en) | A kind of detection method of differential pressure type air-tightness leakage detection apparatus and its leakage flow | |
| KR101131948B1 (en) | method and apparatus for airtight inspection using equalization | |
| CN103528909B (en) | A kind of using method of the determinator of gas solubility | |
| CN208206412U (en) | A kind of hydraulic leak measuring device | |
| US8201438B1 (en) | Detection of gas leakage | |
| CN210269078U (en) | Air tightness measuring device for plastic welding part | |
| CN110285938A (en) | Plastics weldment airtightness measurement device and its measurement method | |
| CN208420321U (en) | Safety valve testing equipment | |
| CN203688152U (en) | Novel gas pressure reducer verifying device | |
| CN110118636A (en) | The airtight testboard of airbed electric air pump | |
| CN210037111U (en) | Gas pipeline sealing performance detection device | |
| CN108072499A (en) | A kind of bilayer air-conditioner pipe air tightness detection system and method | |
| CN102072802B (en) | Intelligent constant-voltage high-precision leak detector | |
| JP3184885B2 (en) | Gas meter calibration device | |
| JP2017090175A (en) | Volume measurement method and airtightness leakage test method using the same | |
| JP3715543B2 (en) | Airtight performance test method | |
| CN111896191B (en) | On-site calibration method and auxiliary calibration equipment for integral oil tank leakage detection equipment | |
| CN214894064U (en) | Engine exhaust gas analyzer accuracy detection device | |
| CN108827561A (en) | Safety valve testing equipment | |
| CN107966252A (en) | A kind of leakage amount detector of micrometeor air seal | |
| KR20180000181U (en) | Leak Testing Apparatus using pressure-difference of Ball valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |