CN104215558A - Testing method for air valves - Google Patents
Testing method for air valves Download PDFInfo
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- CN104215558A CN104215558A CN201310213716.5A CN201310213716A CN104215558A CN 104215558 A CN104215558 A CN 104215558A CN 201310213716 A CN201310213716 A CN 201310213716A CN 104215558 A CN104215558 A CN 104215558A
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Abstract
A testing method for air valves is disclosed. A to-be tested air vale, a thermotank, a water container and multiple sealing boxes are provided. The sealing boxes are taken as a light-fixture casing, and water is sprayed into the multiple sealing boxes for stimulating the moisture in the light-fixture casing. The sealing boxes are put in the thermotank for stimulating a normal working state of a light fixture, and then the sealing boxes are put into a water container holding normal-temperature water for stimulating rain impacting the light fixture. Through the above process, by observing the water mist generation state in the multiple sealing boxes, the air permeability of the sealing boxes is obtained. If the sealing box provided with the to-be testes air valve is good in air permeability, the to-be tested air valve is proved to have effective air permeability, and conversely, the to-be tested air valve is determined to have ineffective air permeability. Therefore, before the air valve is applied to a light fixture, by using the above testing method for air valves for detection, air valves with unqualified air permeability can be rejected, and thus the integral quality of the light fixture is facilitated to be improved.
Description
Technical field
The present invention relates to characterization processes, particularly relate to a kind of method of testing of vent valve.
Background technology
The working environment of outdoor lighting lamp is general comparatively severe, and lamp housing subjects the change of environment temperature and pressure.Such as, rainfall causes lamp casing to cool rapidly, thus forms pressure reduction in housing.If now do not balance the pressure inside and outside housing, then the air in external environment condition and moisture just can enter enclosure interior by seal clearance.When moisture touches the relatively low inner walls of temperature, be just condensed into the globule, thus the device of lamp interior is had an impact.
For avoiding moisture in the accumulated inside of light fixture, traditional solution be light fixture out of doors housing on the vent valve of water proof and dust proof is installed.Vent valve can when temperature and pressure changes rapid equalisation housing external and internal pressure, make enclosure interior can and outside realize gas exchanges, thus the moisture in housing is distributed, avoids the inside formation globule of light fixture.Therefore, the permeability of vent valve is most important for the normal work maintaining light fixture.Due to the error in process, the permeability of vent valve there are differences.But at present when vent valve is applied to light fixture, whether the airing function lacking necessary detection means testing air permeable valve is effective.Therefore, easily underproof for permeability vent valve is applied to light fixture, thus makes part light fixture in the change of temperature and pressure, still there is the inner problem that can produce the globule.
Summary of the invention
Based on this, be necessary to provide a kind of method of testing that accurately can detect the vent valve of vent valve permeability.
A method of testing for vent valve, comprises the following steps:
Vent valve to be measured, constant temperature oven, water container and multiple seal box are provided, and spray water in described multiple seal box;
From described multiple seal box, choose a part, and described vent valve to be measured is installed on selected seal box;
Described multiple seal box is all placed in described constant temperature oven, the temperature in described constant temperature oven is set to preset temperature, and make described multiple seal box keep the first Preset Time in described constant temperature oven;
Described multiple seal box is taken out from described constant temperature oven, and is placed in the described water container filling normal-temperature water;
Described multiple seal box is taken out from described water container, and judges the permeability of described vent valve to be measured by the situation that described multiple seal box inwall produces water smoke.
Wherein in an embodiment, described seal box is two, and wherein one upper described vent valve to be measured is installed.
Wherein in an embodiment, described preset temperature is 60 degrees Celsius.
Wherein in an embodiment, described first Preset Time is 1 hour.
Wherein in an embodiment, described multiple seal box need keep at least 1 minute in described water container.
Wherein in an embodiment, described multiple seal box is taken out from described water container, and judges that the step of the permeability of described vent valve to be measured is specially by the situation that described multiple seal box inwall produces water smoke:
If the inwall being provided with the seal box of described vent valve to be measured does not produce water smoke, and the inwall not installing the seal box of described vent valve to be measured produces water smoke, then judge that the permeability of described vent valve to be measured is effective;
If the inwall of described multiple seal box all produces water smoke, and only have the water smoke in the seal box installing described vent valve to be measured to disappear in the second Preset Time, then judge that the permeability of described vent valve to be measured is effective;
If the inwall of described multiple seal box all produces water smoke, and the water smoke installed in the seal box of described vent valve to be measured disappears with the water smoke do not installed in the seal box of described vent valve to be measured simultaneously, then judge that the permeability of described vent valve to be measured is invalid.
Wherein in an embodiment, described second Preset Time is 30 minutes.
Wherein in an embodiment, after being taken out from described water container by described multiple seal box, be placed in normal temperature environment.
Wherein in an embodiment, described multiple seal box is taken out from described water container, and judges that the step of the permeability of described vent valve to be measured also comprises by the situation that described multiple seal box inwall produces water smoke:
After described multiple seal box is taken out from described water container, the moisture of described multiple seal box remained on surface is removed.
Wherein in an embodiment, the sidewall of described seal box is provided with face glass, be can be observed the inside of described seal box by described face glass.
The method of testing of above-mentioned vent valve, is used as seal box as lamp casing, and sprays water in multiple seal box, has moisture to simulate lamp casing.Seal box is placed in constant temperature oven to simulate the normal operating conditions of light fixture, then seal box is placed in the water container that fills normal-temperature water and impacts light fixture with Simulated rainwater.After said process, just can obtain the gas penetration potential of seal box by observing the situation producing water smoke in multiple seal box.If the gas penetration potential being provided with the seal box of vent valve to be measured close is better, then prove that the permeability of vent valve to be measured is effective; Otherwise, then judge that the permeability of vent valve to be measured is invalid.Therefore, before vent valve is applied to light fixture, through the detection of the method for testing of above-mentioned vent valve, underproof for permeability vent valve can be rejected, thus be conducive to the overall quality improving light fixture.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of vent valve method of testing in present pre-ferred embodiments.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully.Preferred embodiment of the present invention is given in accompanying drawing.But the present invention can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present invention more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Refer to Fig. 1, the vent valve method of testing in present pre-ferred embodiments, comprises step S110 ~ S150:
Step S110, provides vent valve to be measured, constant temperature oven, water container and multiple seal box, and sprays water in multiple seal box.
The inside of constant temperature oven can keep stationary temperature, and temperature value is adjustable.In test process, seal box is when being made lamp casing.It is concrete that the sidewall of seal box comprises face glass in the present embodiment, thus by the situation of face glass just observable seal box inside.Therefore, seal box can be opened when observing the situation of seal box inside.The sidewall of seal box also can by other transparent materials, as resin etc. is made.Light fixture in use often experiences air pressure and temperature variation frequently, therefore moisture is infiltrated in the meeting that lamp casing inside is difficult to avoid.In seal box water spray can simulate lamp casing in use existing moisture infiltrate, thus make test closer to being really situation.
Step S120, chooses a part from multiple seal box, and is installed on selected seal box by vent valve to be measured.
Concrete, multiple seal box is needed to be divided into two groups, so that compare intuitively.Wherein, choose a part and install vent valve to be measured from multiple seal box, the part of remainder does not then install vent valve.The seal box of vent valve is installed, by vent valve and externally carry out gas exchanges.
Step S130, is all placed in multiple seal box in constant temperature oven, and the temperature in constant temperature oven is set to preset temperature, and makes multiple seal box in constant temperature oven, keep the first Preset Time.
Seal box is all placed in constant temperature oven, can simulate state when light fixture normally works.Specifically in the present embodiment, preset temperature is 60 degrees Celsius.Further, the first Preset Time is 1 hour.State when above-mentioned parameter and light fixture normally work is the most close, thus makes test result more accurate.It is pointed out that preset temperature and the first Preset Time can adjust according to actual conditions.
Step S140, takes out multiple seal box from constant temperature oven, and is placed in the water container filling normal-temperature water.
Concrete, need to water filling in water container.Wherein, the water of described injection is the water of normal temperature state, generally removes tap water.Multiple seal box is placed in water container, is after simulation light fixture normally works, the prominent process of meeting rainwater and attacking.Now, before and after seal box, the temperature difference is comparatively large, and the inner and outer air pressure difference of seal box is also larger.In the present embodiment, multiple seal box need keep at least 1 minute in water container.If the time is too short, then seal box may be made not cool completely, thus cause test result inaccurate.
Step S150, takes out multiple seal box from water container, and judges the permeability of vent valve to be measured by the situation of multiple seal box inwall generation water smoke.
Concrete, after being taken out from water container by multiple seal box, be placed in normal temperature environment.In addition, before observing the situation that in seal box, water smoke produces, also the moisture of multiple seal box remained on surface is removed.Therefore, the moisture effects judged result of seal box remained on surface can be avoided.
In the present embodiment, above-mentioned steps S150 is specially: if the inwall being provided with the seal box of vent valve to be measured does not produce water smoke, and the inwall not installing the seal box of vent valve to be measured produces water smoke, then judge that the permeability of vent valve to be measured is effective.
Concrete, the inwall not installing the seal box of vent valve to be measured produces water smoke, then illustrate that the moisture sprayed in seal box in advance is not run off by other approach, and the environment residing for seal box meets the condition making moisture form water smoke.But the inwall being provided with the seal box of vent valve to be measured does not produce water smoke, then the moisture that the inside of seal box does not remain is described, or seldom, is not enough to form obvious water smoke.Difference due to both is only whether vent valve is housed, therefore the known moisture sprayed in advance in seal box is dispersed in air by vent valve to be measured.Therefore, can judge that the permeability of vent valve to be measured is effective.
If the inwall of multiple seal box all produces water smoke, and only have the water smoke in the seal box installing vent valve to be measured to disappear in the second Preset Time, then judge that the permeability of vent valve to be measured is effective.
Concrete, the water smoke in the seal box installing vent valve to be measured is only had to disappear in the second Preset Time, the water smoke do not installed in the seal box of vent valve to be measured then keeps for a long time, then illustrate that the moisture in the seal box installing vent valve to be measured distributes comparatively fast in air.In the present embodiment, the second Preset Time is 30 minutes.It is pointed out that the factor such as temperature, air pressure of the second predetermined time period depending on the residing environment of test, when test environment changes, the length of the second Preset Time need carry out adaptive adjustment.Because the moisture in the seal box of provable installation vent valve to be measured distributes comparatively fast in air.Therefore, illustrate that seal box can carry out gas exchanges with air by vent valve to be measured, thus judge that the permeability of vent valve to be measured is effective.
If the inwall of multiple seal box all produces water smoke, and the water smoke installed in the seal box of vent valve to be measured disappears with the water smoke do not installed in the seal box of vent valve to be measured simultaneously, then judge that the permeability of vent valve to be measured is invalid.
Wherein, disappearing simultaneously and refer to that the water smoke in seal box disappears roughly at one time, is not completely the same, and both mistimings all can think that the time disappears within the mistiming of presetting.Concrete, the mistiming scope preset is 5 minutes, and both mistimings all can be thought to disappear within 5 minutes simultaneously.If all produce water smoke in all seal boxes, and the time that water smoke disappears is roughly the same, then illustrate that vent valve to be measured does not have too many contribution for the gas exchanges of seal box, thus judge that the permeability of vent valve to be measured is invalid.
In the present embodiment, seal box is two, and wherein one upper vent valve to be measured is installed.Contrasted by two seal boxes, can test vent valve rapidly, thus improve testing efficiency.It is pointed out that in other embodiments, also can adopt two or more seal box, and adopt multiple vent valve to test simultaneously.During test, be as the criterion with the phenomenon that the frequency of occurrences is higher, thus enchancement factor can be avoided the interference of test result.
The method of testing of above-mentioned vent valve, is used as seal box as lamp casing, and sprays water in multiple seal box, has moisture to simulate lamp casing.Seal box is placed in constant temperature oven to simulate the normal operating conditions of light fixture, then seal box is placed in the water container that fills normal-temperature water and impacts light fixture with Simulated rainwater.After said process, just can obtain the gas penetration potential of seal box by observing the situation producing water smoke in multiple seal box.If the gas penetration potential being provided with the seal box of vent valve to be measured close is better, then prove that the permeability of vent valve to be measured is effective; Otherwise, then judge that the permeability of vent valve to be measured is invalid.Therefore, before vent valve is applied to light fixture, through the detection of the method for testing of above-mentioned vent valve, underproof for permeability vent valve can be rejected, thus be conducive to the overall quality improving light fixture.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a method of testing for vent valve, is characterized in that, comprises the following steps:
Vent valve to be measured, constant temperature oven, water container and multiple seal box are provided, and spray water in described multiple seal box;
From described multiple seal box, choose a part, and described vent valve to be measured is installed on selected seal box;
Described multiple seal box is all placed in described constant temperature oven, the temperature in described constant temperature oven is set to preset temperature, and make described multiple seal box keep the first Preset Time in described constant temperature oven;
Described multiple seal box is taken out from described constant temperature oven, and is placed in the described water container filling normal-temperature water;
Described multiple seal box is taken out from described water container, and judges the permeability of described vent valve to be measured by the situation that described multiple seal box inwall produces water smoke.
2. the method for testing of vent valve according to claim 1, is characterized in that, described seal box is two, and wherein one upper described vent valve to be measured is installed.
3. the method for testing of vent valve according to claim 1, is characterized in that, described preset temperature is 60 degrees Celsius.
4. the method for testing of vent valve according to claim 3, is characterized in that, described first Preset Time is 1 hour.
5. the method for testing of vent valve according to claim 1, is characterized in that, described multiple seal box need keep at least 1 minute in described water container.
6. the method for testing of vent valve according to claim 1, it is characterized in that, described multiple seal box is taken out from described water container, and judges that the step of the permeability of described vent valve to be measured is specially by the situation that described multiple seal box inwall produces water smoke:
If the inwall being provided with the seal box of described vent valve to be measured does not produce water smoke, and the inwall not installing the seal box of described vent valve to be measured produces water smoke, then judge that the permeability of described vent valve to be measured is effective;
If the inwall of described multiple seal box all produces water smoke, and only have the water smoke in the seal box installing described vent valve to be measured to disappear in the second Preset Time, then judge that the permeability of described vent valve to be measured is effective;
If the inwall of described multiple seal box all produces water smoke, and the water smoke installed in the seal box of described vent valve to be measured disappears with the water smoke do not installed in the seal box of described vent valve to be measured simultaneously, then judge that the permeability of described vent valve to be measured is invalid.
7. the method for testing of vent valve according to claim 6, is characterized in that, described second Preset Time is 30 minutes.
8. the method for testing of vent valve according to claim 1, is characterized in that, after being taken out by described multiple seal box, is placed in normal temperature environment from described water container.
9. the method for testing of vent valve according to claim 1, it is characterized in that, described multiple seal box is taken out from described water container, and judges that the step of the permeability of described vent valve to be measured also comprises by the situation that described multiple seal box inwall produces water smoke:
After described multiple seal box is taken out from described water container, the moisture of described multiple seal box remained on surface is removed.
10. the method for testing of vent valve according to claim 1, is characterized in that, the sidewall of described seal box is provided with face glass, be can be observed the inside of described seal box by described face glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213716.5A CN104215558A (en) | 2013-05-31 | 2013-05-31 | Testing method for air valves |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213716.5A CN104215558A (en) | 2013-05-31 | 2013-05-31 | Testing method for air valves |
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| CN104215558A true CN104215558A (en) | 2014-12-17 |
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| CN201310213716.5A Pending CN104215558A (en) | 2013-05-31 | 2013-05-31 | Testing method for air valves |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112284646A (en) * | 2020-11-25 | 2021-01-29 | 深圳市法拉第电驱动有限公司 | Method for testing air tightness of motor controller |
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| DE102010021360A1 (en) * | 2010-05-22 | 2011-11-24 | Daimler Ag | On-board-diagnosis apparatus for use in motor car, has mounting unit provided for stepwise initial mounting of connection units and for connecting duct element and plug element in non-detachable and nondestructive manner |
| CN102478446A (en) * | 2010-11-27 | 2012-05-30 | 西安博昱新能源有限公司 | LED street lamp rain experiment environment apparatus |
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- 2013-05-31 CN CN201310213716.5A patent/CN104215558A/en active Pending
Patent Citations (6)
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| JP2004263676A (en) * | 2003-03-04 | 2004-09-24 | Denso Corp | Leak checking device of evaporated fuel treating device |
| CN101180484A (en) * | 2005-05-18 | 2008-05-14 | 日东电工株式会社 | Gas permeable member and gas permeable casing using the same |
| CN201464141U (en) * | 2009-07-03 | 2010-05-12 | 湖北环宇车灯有限公司 | Air tightness detection machine for auto lamps |
| DE102010021360A1 (en) * | 2010-05-22 | 2011-11-24 | Daimler Ag | On-board-diagnosis apparatus for use in motor car, has mounting unit provided for stepwise initial mounting of connection units and for connecting duct element and plug element in non-detachable and nondestructive manner |
| CN201926544U (en) * | 2010-11-27 | 2011-08-10 | 西安博昱新能源有限公司 | LED street lamp drenching experimental environment device |
| CN102478446A (en) * | 2010-11-27 | 2012-05-30 | 西安博昱新能源有限公司 | LED street lamp rain experiment environment apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112284646A (en) * | 2020-11-25 | 2021-01-29 | 深圳市法拉第电驱动有限公司 | Method for testing air tightness of motor controller |
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