CN210269078U - Air tightness measuring device for plastic welding part - Google Patents
Air tightness measuring device for plastic welding part Download PDFInfo
- Publication number
- CN210269078U CN210269078U CN201921061888.4U CN201921061888U CN210269078U CN 210269078 U CN210269078 U CN 210269078U CN 201921061888 U CN201921061888 U CN 201921061888U CN 210269078 U CN210269078 U CN 210269078U
- Authority
- CN
- China
- Prior art keywords
- measuring device
- air
- valve
- model
- utility
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
本实用新型提供了一种塑料焊接件用气密性测量装置，包括一储气罐、设置于储气罐进气端的调压阀、设置于储气罐出气端的比例阀，所述比例阀的一端通过截止阀与压力传感器连接。本实用新型的有益效果体现在：采用本实用新型的装置可以很好的进行塑料件气密性的测试，且测试效果好，很好的替代了现有技术中昂贵的国外检测设备，大大的降低了检测成本，实际成本降低约80%。
The utility model provides an air tightness measuring device for plastic welding parts, which comprises an air storage tank, a pressure regulating valve arranged at the air inlet end of the air storage tank, and a proportional valve arranged at the air outlet end of the air storage tank. One end is connected with the pressure sensor through the shut-off valve. The beneficial effects of the utility model are as follows: the device of the utility model can be used to test the air tightness of plastic parts very well, and the test effect is good, and the expensive foreign testing equipment in the prior art is well replaced, and the The detection cost is reduced, and the actual cost is reduced by about 80%.
Description
Technical Field
The utility model belongs to the technical field of the gas tightness detects, concretely relates to gas tightness measuring device is used to plastics welding.
Background
With the improvement of the life quality of people, automobiles become indispensable transportation tools in the life of people. The auxiliary water tank of the automobile is a component of an engine cooling system and plays a role in balancing the pressure of the water tank. The automobile auxiliary water tank has the main functions that when the temperature of an engine is high, liquid expands, and a part of anti-freezing liquid flows into the auxiliary water tank through a water tank cover; when the temperature is reduced and the pressure of the cooling system is negative, the system sucks the anti-freezing liquid of the auxiliary water tank into the cooling system through the water tank cover. Meanwhile, the auxiliary water tank is provided with corresponding scales for marking the height of the liquid level, so that the current water quantity condition of the water tank can be intuitively indicated whether the water tank is sufficient or not. The conventional auxiliary water tank is basically a plastic container manufactured by a welding method, but specific equipment is required to detect the air tightness of the welded container after welding is finished, and the auxiliary water tank can be put into use after reaching the standard. The existing detection is realized by adopting a standard leakage tester, but the existing standard leakage tester is all imported foreign brands, and has very high price and high cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a gas tightness measuring device for plastic welding piece and a measuring method thereof.
The purpose of the utility model is realized through the following technical scheme:
the air tightness measuring device for the plastic welding part comprises a gas storage tank, a pressure regulating valve arranged at the gas inlet end of the gas storage tank and a proportional valve arranged at the gas outlet end of the gas storage tank, wherein one end of the proportional valve is connected with a pressure sensor through a stop valve.
Preferably, a two-position three-way valve is arranged between the pressure regulating valve and the stop valve.
Preferably, the pressure regulating valve is a pneumatic pressure regulating valve.
Preferably, the proportional valve is an electrical proportional valve.
Preferably, the pressure sensor is connected to the product to be detected.
Preferably, the testing method of the air tightness measuring device for the plastic welding part comprises the following steps:
s1, firstly, reducing the pressure of the compressed air through a manual pressure regulating valve;
s2, the compressed air after being depressurized is stored in an air storage tank, so that the compressed air in the pipeline is not subjected to external pressure change any more, and the air pressure is kept stable;
s3, adjusting the air pressure required by the test through an electric proportional valve to carry out the test: in the inflation stage, the stop valve is controlled to be opened through the two-position three-way valve, and compressed air enters a product; after the inflation stage is finished, the two-position three-way valve controls the stop valve to be closed; and in the pressure maintaining stage, the air fusion in the product becomes stable, the air pressure in the product is measured in real time through a pressure sensor connected with the product, and the air tightness of the product is determined by calculating the pressure change at the beginning and the end of the measurement.
Preferably, the step of determining the airtightness of the product in S3 includes the steps of:
s31, when the pressure sensor detects that the pressure is P0 when the measuring phase begins and the pressure sensor detects that the pressure is P1 when the measuring phase ends, the differential pressure before and after the measurement is delta P = P1-P0; according to the formula
The amount of leakage can be calculated, where F is the amount of leakage and V is the volume of the part being tested.
The beneficial effects of the utility model are embodied in: adopt the utility model discloses a device can be fine carry out the test of working of plastics gas tightness, and the test effect is good, fine substitution expensive foreign detection equipment among the prior art, great reduction the detection cost, actual cost reduction is about 80%.
Drawings
FIG. 1: the utility model discloses a connection structure schematic diagram.
FIG. 2: the utility model discloses pressure change curve graph under the three stage when detecting the gas tightness.
FIG. 3: adopt the utility model discloses measuring device detects and detects the contrast of cycle required time when adopting current standard tester to do the test.
Detailed Description
The utility model discloses a plastics are gas tightness measuring device for welding piece combines fig. 1 to show, including a gas holder 2 the inlet end of gas holder 2 is provided with pneumatic air-vent valve 1, the end of giving vent to anger of gas holder 2 is provided with electric proportional valve 3, stop valve 5 is passed through to electric proportional valve 3's one end and is connected with pressure sensor, pressure sensor with wait to detect the product and be connected for detect the pressure in the product at any time. Meanwhile, in order to ensure that the precision of the sensor is better guaranteed, the sensor is connected with the check block. And a two-position three-way valve 4 is arranged between the pneumatic pressure regulating valve 1 and the stop valve 5 and used for better controlling the opening and closing of the stop valve 5.
For reaching better detection effect, the utility model discloses in each part model that uses as follows show:
| name of component | Brand | Model number |
| Pressure reducing valve | FESTO | LRP-1/4-2,5 |
| Gas storage tank | FESTO | CRVZS-2 |
| Electric proportional valve | FESTO | VPPM-6L-L-1-G18-0L6H-A4P-C1 |
| Two-position three-way valve and stop 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 |
. The utility model also discloses a test method of plastics is gas tightness measuring device for welding spare, including following step:
s1, firstly, reducing the pressure of the compressed air through a manual pressure regulating valve;
s2, the compressed air after being depressurized is stored in an air storage tank, so that the compressed air in the pipeline is not subjected to external pressure change any more, and the air pressure is kept stable;
s3, adjusting the pressure required by the test by an electric proportional valve to carry out the test, wherein the test is divided into three stages, namely an inflation stage, a pressure maintaining stage and a test stage, the pressure change generated in each stage is shown in figure 2, the steps of controlling the test method by the device in the utility model comprise,
in the inflation stage, the stop valve is controlled to be opened through the two-position three-way valve, and compressed air enters a product; after the inflation stage is finished, the two-position three-way valve controls the stop valve to be closed; and in the pressure maintaining stage, the air fusion in the product becomes stable, the air pressure in the product is measured in real time through a pressure sensor connected with the product, and the air tightness of the product is determined by calculating the pressure change at the beginning and the end of the measurement.
Wherein the step of determining the airtightness of the product in S3 comprises the steps of:
s31, when the pressure sensor detects that the pressure is P0 when the measuring phase begins and the pressure sensor detects that the pressure is P1 when the measuring phase ends, the differential pressure before and after the measurement is delta P = P1-P0; according to the formula
Calculating the leakage, wherein F is the leakage and V is zeroThe volume of the device.
The following is provided for better verification the utility model discloses well detection device's validity's experimental data:
adopt current standard tester measured data as shown in table 1, adopt the utility model discloses a measuring device measured data is shown as table 2. The result shows, adopt standard leak tester on the market with the utility model discloses well measuring device's test result is unanimous basically, and comparatively stable.
Table 1: existing standard tester measurement data
Table 2: the utility model discloses a measuring device measured data
Adopt in order to test the utility model discloses whether measuring device detects required cycle and compares the influential with the standard test appearance detection cycle among the prior art, then, has carried out specific test cycle's experiment, as shown in fig. 3, the result shows, and detection cycle is unchangeable completely. Therefore, the utility model discloses well measuring device's is effective and practicality proved.
Meanwhile, the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061888.4U CN210269078U (en) | 2019-07-09 | 2019-07-09 | Air tightness measuring device for plastic welding part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061888.4U CN210269078U (en) | 2019-07-09 | 2019-07-09 | Air tightness measuring device for plastic welding part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210269078U true CN210269078U (en) | 2020-04-07 |
Family
ID=70047925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921061888.4U Expired - Fee Related CN210269078U (en) | 2019-07-09 | 2019-07-09 | Air tightness measuring device for plastic welding part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210269078U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285938A (en) * | 2019-07-09 | 2019-09-27 | 劳士领汽车配件（昆山）有限公司 | Plastics weldment airtightness measurement device and its measurement method |
| CN112985711A (en) * | 2021-05-08 | 2021-06-18 | 江苏时代新能源科技有限公司 | Air tightness detection device and method thereof |
-
2019
- 2019-07-09 CN CN201921061888.4U patent/CN210269078U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285938A (en) * | 2019-07-09 | 2019-09-27 | 劳士领汽车配件（昆山）有限公司 | Plastics weldment airtightness measurement device and its measurement method |
| CN112985711A (en) * | 2021-05-08 | 2021-06-18 | 江苏时代新能源科技有限公司 | Air tightness detection device and method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202008429U (en) | Air tightness detector | |
| CN201965006U (en) | Lithium ion battery differential pressure formula leak hunting device | |
| CN109238597B (en) | A kind of detection method of differential pressure type air-tightness leakage detection apparatus and its leakage flow | |
| CN201364379Y (en) | Air pressure switch multi-parameter auto-detection system | |
| CN208206412U (en) | A kind of hydraulic leak measuring device | |
| WO2007105360A1 (en) | Leakage inspecting method and leakage inspecting device for pipe lines | |
| CN210269078U (en) | Air tightness measuring device for plastic welding part | |
| KR101131948B1 (en) | method and apparatus for airtight inspection using equalization | |
| CN111272341A (en) | Battery box electrolyte leakage detection device and electrolyte leakage detection method | |
| JP5679367B2 (en) | Battery box airtight inspection device | |
| CN103389193A (en) | Detecting system and method of leakage of gas cylinder | |
| CN104865026A (en) | Polyethylene valve sealing performance room temperature low pressure test method | |
| CN100582711C (en) | Device for testing product air leakage | |
| CN110118635A (en) | Differential pressure type air-tightness tester and test method | |
| CN101227014B (en) | Method for detecting lithium ion battery airtightness | |
| JP5392220B2 (en) | Battery box airtight inspection device | |
| CN203443754U (en) | Air storage tank leakage detection system | |
| CN105092185B (en) | Dual-fuel automobile air-tightness and aeration detection means and its control method | |
| CN203688152U (en) | Novel gas pressure reducer verifying device | |
| CN201514304U (en) | Opening pressure detection platform for automobile water tank cover | |
| CN114608762A (en) | Battery leakage detection method and detection device | |
| CN102072802A (en) | Intelligent constant-voltage high-precision leak detector | |
| CN110285938A (en) | Plastics weldment airtightness measurement device and its measurement method | |
| CN213658193U (en) | Positive and negative pressure type precise air tightness detector | |
| CN216645537U (en) | Temperature and pressure measurement system of sound velocity nozzle standard device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200407 |