CN101846574A - Detection method for sealing performance of lamp - Google Patents

Detection method for sealing performance of lamp Download PDF

Info

Publication number
CN101846574A
CN101846574A CN201010186657A CN201010186657A CN101846574A CN 101846574 A CN101846574 A CN 101846574A CN 201010186657 A CN201010186657 A CN 201010186657A CN 201010186657 A CN201010186657 A CN 201010186657A CN 101846574 A CN101846574 A CN 101846574A
Authority
CN
China
Prior art keywords
light fixture
detection
lamp
temperature
liquid
Prior art date
Application number
CN201010186657A
Other languages
Chinese (zh)
Inventor
周明杰
罗志祥
陈焕杰
Original Assignee
海洋王照明科技股份有限公司
深圳市海洋王照明工程有限公司
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 海洋王照明科技股份有限公司, 深圳市海洋王照明工程有限公司 filed Critical 海洋王照明科技股份有限公司
Priority to CN201010186657A priority Critical patent/CN101846574A/en
Publication of CN101846574A publication Critical patent/CN101846574A/en

Links

Abstract

The invention is suitable for the technical field of detection methods, and discloses a detection method for the sealing performance of a lamp. The detection method comprises the steps of soaking the assembled lamp in liquid with temperature higher than the room temperature, and observing whether bubbles emit from the lamp or not. In the invention, the assembled lamp is soaked in the liquid with the temperature higher than the room temperature, and whether bubbles emit from the lamp or not is observed, so that the sealing performance of the lamp can be primarily judged. The detection method has low detection cost, is easy to realize, simple to operate as well as quick and effective, only needs one container and a plurality of liquids with the temperature higher than the room temperature, can quickly judge the sealing problem points, and is beneficial to shortening the period for developing products.

Description

A kind of detection method of sealing performance of lamp

Technical field

The invention belongs to the detection method technical field, relate in particular to a kind of detection method of sealing performance of lamp.

Background technology

At present, special lamp all has a plurality of joints on practical set, all can carry out encapsulation process on each joint, to reach the designing requirement of IP degree of protection.Do not reach the light fixture of requirement for sealing, at first will investigate, analyze and find out the concrete position that sealing problem occurs, rectify and improve pointedly the sealing effectiveness of each sealing place.

And the method to the detection of light fixture sealing problem point mainly is to detect by carrying out the test of IP degree of protection in the prior art.The method of IP degree of protection test is that the light fixture sample is sent to mechanism for testing or intra-company laboratory, carries out actual test according to the respective country standard, according to the IP grade of test result checking and affirmation light fixture sample.Progressively dismantle light fixture the test back that finishes, and each sealed engagement place is checked, finally judges whether up to standardly, and analyze to determine concrete sealing problem point.The test result that this detection method obtains is relatively accurate, but it is longer relatively to test required time, and the testing cost height.If the disposable percent of pass of product is held under the not high situation, for example in product development stage, just adopt the method can detect to airtightness of lamps, can increase the cost of product undoubtedly, the cycle of the product development that also can extend simultaneously.

Summary of the invention

The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of detection method of sealing performance of lamp is provided, its cost is low, be easy to realize, only need a container and some hot water to get final product, and operate simple and easy, fast and effectively, can make quick judgement to the sealing problem point.

Technical scheme of the present invention is: a kind of detection method of sealing performance of lamp, and described detection method comprises:

The light fixture of finishing assembling is soaked in temperature to be higher than in the liquid of room temperature;

Whether observe on the light fixture has bubble to emerge.

Preferably, described light fixture is for to assemble under room temperature.

Preferably, described liquid is the mixed liquor of water or glycerine or glycerine and water.

Preferably, the temperature of described liquid is higher than 20 ℃ to 140 ℃ of room temperatures, and is lower than the boiling point of this liquid.

The detection method of a kind of sealing performance of lamp provided by the invention, whether it is soaked in the liquid that temperature is higher than room temperature by the light fixture that will finish assembling, and observe on the light fixture and have bubble to emerge, and just can tentatively judge the airtightness of lamps energy.The detection cost is low, is easy to realize, only the liquid that needs a container and some temperature to be higher than room temperature get final product, and operates simple and easyly, fast and effective, can make quick judgement by the sealing problem point, helps shortening the cycle of product development.

Description of drawings

Fig. 1 is the process flow diagram of the detection method of a kind of sealing performance of lamp of providing of the embodiment of the invention.

Embodiment

In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.

As everyone knows,, also claim carat imperial equation of uncle, be expressed as follows according to The Ideal-Gas Equation:

PV=nRT (1)

In the formula, P represents that gas pressure intensity, unit are handkerchief (Pa); V represents that gas volume, unit are cubic meter (m 3); T represents that absolute temperature, unit are Kelvin (K); N represents that amount of substance, unit are mole (mol); R represents gas law constant, and its value is 8.314 (Pam 3/ Kmol), all gas R value is all identical.

By formula (1) as can be known, for the gas of certain mass, n is constant, if allow the volume V of gas also remain unchanged, then can obtain following Charles's law:

That is: the volume V when gas remains unchanged, the gas of certain mass, and pressure P is directly proportional with its absolute temperature T.Temperature raises, and pressure is also along with increase, and is directly proportional between temperature and the pressure.

According to above-mentioned principle, the detection method of a kind of sealing performance of lamp that the embodiment of the invention provides, described detection method comprises: the light fixture that will at room temperature finish assembling is soaked in temperature and is higher than in the liquid of room temperature; Whether observe on the light fixture has bubble to emerge.Particularly, light fixture comprises housing unit and illuminated component, described housing unit comprises case member and lower case member, fixedly connected and formation inner chamber between described upward case member and the lower case member, described illuminated component is fixedly arranged in the above-mentioned inner chamber, the light fixture that is applied to open air or some special occasions is wanted high requirement to the sealing property of product, thus must test the sealing property of light fixture inner chamber, to improve reliability of products.Can there be air in certain amount in the light fixture of finishing assembling in the chamber within it, when the light fixture that will finish assembling as the operator is soaked in the liquid that is higher than room temperature, the air of light fixture inner chamber will be heated and expand, the air pressure of light fixture inner chamber will raise, if the light fixture inner chamber is poorly sealed, bubble will at first be emerged from bore seal is least severely punished; Whether the operator is qualified by the sealing property of observing each joint on the light fixture and whether having bubble to emerge just can tentatively to judge the light fixture inner chamber; Each joint includes but not limited to: go up between case member and the lower case member, go up the light-emitting window place that offers on the case member, but there are the position that engages in the through hole that the supply lines of offering on the lower case member passes and other, when in light fixture is being higher than the liquid of room temperature, soaking, the bubble if joint is emerged, can conclude that then this light fixture is the underproof product of sealing property, need not that it is continued to deliver to mechanism for testing and detect, can save a large amount of testing costs; When the detection method of the sealing performance of lamp that adopts the embodiment of the invention to provide light fixture is detected find have joint to emit bubble after, represent poorly sealed herein, light fixture can be taken out from liquid, then light fixture is taken apart, reexamine the poorly sealed part of light fixture, and take corresponding measure that this poorly sealed part is rectified and improved, again light fixture is assembled by job instruction, and once more light fixture is soaked in the liquid and detects.As this moment each joint of light fixture do not have bubble and emerge, the operator can assert tentatively that its sealing property is qualified, can or be sent to formal testing agency and further test the packing of product.If each joint of light fixture still has bubble to emerge, then it is disassembled, overhauls and assembles, and detect again by above-mentioned steps, the detection method of a kind of sealing performance of lamp that the embodiment of the invention provides, its cost is low, be easy to realize, only need a container and some hot water to get final product, and operate simple and easy, quick and effective, can make quick judgement by the sealing problem point, help shortening the cycle of product development.According to the relation of temperature and pressure as can be known, temperature is high more, and gas pressure intensity is big more in the light fixture, and bubble is easy emerging more just, and the temperature that therefore improves tracer liquid helps improving the accuracy and the sensing range of testing result.When the tracer liquid of selecting for use is glycerine,,, therefore can select for use the glycerine of higher temperature to detect the airtightness of lamps energy far above the boiling point of water because the boiling point of glycerine reaches 290 ℃.Glycerine can be heated to about 140 ℃, and adopt anchor clamps that light fixture to be measured is immersed in the glycerine, because the temperature contrast between room temperature and the glycerine is bigger, the air of light fixture inner chamber will sharply be heated and rapid expanding, the air pressure rising amplitude of light fixture inner chamber is big and air pressure rising required time is shorter, can in bigger pressure differential range, can detect, can differentiate the sealing property of light fixture under bigger pressure reduction condition airtightness of lamps.If there is the sealing problem point on the light fixture, the bubble just light fixture sealing problem point can in time be emerged has improved detection efficiency when having increased sensing range.

Additionally, according to actual needs, also can select for use the potpourri of G ﹠ W to make tracer liquid, all belong to protection scope of the present invention, glycerine can be water-soluble well, mixes according to the G ﹠ W with different proportion, can obtain the mixed liquor of different boiling.

As shown in Figure 1, the method detailed steps is as follows:

1, at room temperature environment (P 0, T 0) under, general temperature is between 15 ℃-30 ℃, according to assembling work guiding book assembling light fixture, the light fixture inner chamber has been sealed the air of deciding quality up for safekeeping.This moment, the inner chamber air condition was expressed as (P 0, V 0, T 0).

2, prepare the water of suitable capacity, preference temperature T according to the light fixture volume.T generally gets greater than room temperature T 0Get final product.

3, light fixture is immersed in the water that temperature is T, the air of inner chamber is owing to being heated intensification, and pressure increases, and produces certain positive pressure differential with ambient temperature.Examine the speed of the rising that bubbling phenomenon, bubble whether occur.And the light fixture seal point of definite bubbling place correspondence.

4 if the bubbling phenomenon is analyzed and is rectified and improved at the light fixture seal point of bubbling place correspondence, repeats the operation in the 1st step.If there is not the bubbling phenomenon, it is qualified that sealing performance of lamp tentatively is judged as, and can be sent to professional testing agency and carry out actual test.

At analyzing below above the 3rd step work:

Before bubbling, the air quality of inner chamber is constant, and the light fixture cavity volume also remains unchanged, and the inner chamber air is by original state (P 0, V 0, T 0) change to (P, V 0, T),, can get that atmospheric pressure becomes in the chamber according to formula (2) Charles's law:

P = P 0 · T T - - - ( 3 )

The positive pressure differential that produces is:

ΔP = P - P 0 = P 0 · T - T 0 T - - - ( 4 )

For southern area, room temperature is generally T 0About=the 300K, the boiling point of water is got 373K, and the ultimate value of positive pressure differential is 0.24P 0, i.e. 0.24 atmospheric pressure.

Therefore, can roughly extrapolate the malleation extent of generation by the temperature difference between water and the external environment; Otherwise, understood the value of pressure reduction in the actual environment for use of light fixture, just can instead release the temperature of required preparation water.

Preferably, described liquid is the mixed liquor of water or glycerine or glycerine and water.The temperature of described liquid is higher than 20 ℃ to 140 ℃ of room temperatures.In the present embodiment, adopt hot water that light fixture is detected, and the temperature of hot water is higher 40 ℃ than room temperature, avoids the too high operator of causing of temperature to be scalded.

Additionally, liquid also can adopt other non-corrosiveness, nontoxic, boiling point is higher, the liquid that is easy to get, as glycerine etc., can differentiate the sealing property of light fixture under bigger pressure reduction condition.

The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (4)

1. the detection method of a sealing performance of lamp, it is characterized in that: described detection method comprises:
The light fixture of finishing assembling is soaked in temperature to be higher than in the liquid of room temperature;
Whether observe on the light fixture has bubble to emerge.
2. the detection method of a kind of sealing performance of lamp as claimed in claim 1, it is characterized in that: described light fixture is for to assemble under room temperature.
3. the detection method of a kind of sealing performance of lamp as claimed in claim 1, it is characterized in that: described liquid is the mixed liquor of water or glycerine or glycerine and water.
4. the detection method of a kind of sealing performance of lamp as claimed in claim 3, it is characterized in that: the temperature of described liquid is higher than 20 ℃ to 140 ℃ of room temperatures, and is lower than the boiling point of this liquid.
CN201010186657A 2010-05-28 2010-05-28 Detection method for sealing performance of lamp CN101846574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010186657A CN101846574A (en) 2010-05-28 2010-05-28 Detection method for sealing performance of lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010186657A CN101846574A (en) 2010-05-28 2010-05-28 Detection method for sealing performance of lamp

Publications (1)

Publication Number Publication Date
CN101846574A true CN101846574A (en) 2010-09-29

Family

ID=42771265

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201010186657A CN101846574A (en) 2010-05-28 2010-05-28 Detection method for sealing performance of lamp

Country Status (1)

Country Link
CN (1) CN101846574A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102121866A (en) * 2010-12-10 2011-07-13 东莞勤上光电股份有限公司 Airtightness test method of lamp
CN102486429A (en) * 2010-12-06 2012-06-06 海洋王照明科技股份有限公司 Sealing property detection device
CN102608546A (en) * 2011-01-19 2012-07-25 广州市熠芯节能服务有限公司 Dynamic IP (Ingress Protection) testing method for LED (Light-Emitting Diode) illuminating lamp
CN103245467A (en) * 2012-02-07 2013-08-14 海洋王(东莞)照明科技有限公司 Detection method for sealing performance of lamp
CN104568330A (en) * 2014-12-20 2015-04-29 江门市光之典照明有限公司 Method and device for testing lamp sealing property
CN105258864A (en) * 2015-11-26 2016-01-20 玉柴联合动力股份有限公司 Method for detecting sealing of supercharger midbody
CN105509976A (en) * 2014-10-16 2016-04-20 大陆汽车电子(长春)有限公司 Leakage test method and device of engine control unit
CN107525635A (en) * 2017-07-24 2017-12-29 佛山市毅丰电器实业有限公司 A kind of light fixture air-tightness waterproof testing method
CN109781363A (en) * 2018-12-28 2019-05-21 青岛海尔股份有限公司 The detection method and detection device of refrigerator leakproofness

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87106017A (en) * 1987-08-29 1988-04-06 哈尔滨工业大学 Encapsulation parts small opening detects screening method and device
DE3922314A1 (en) * 1989-07-07 1991-01-17 Winfried Zimmer Testing container sealing, e.g. of spray cans - immersing in liquid and detecting escaping gas bubbles optoelectronically with high sensitivity
CN201331418Y (en) * 2008-10-13 2009-10-21 潍坊潍柴零部件机械有限公司 Air-tightness detection device of shell body

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87106017A (en) * 1987-08-29 1988-04-06 哈尔滨工业大学 Encapsulation parts small opening detects screening method and device
DE3922314A1 (en) * 1989-07-07 1991-01-17 Winfried Zimmer Testing container sealing, e.g. of spray cans - immersing in liquid and detecting escaping gas bubbles optoelectronically with high sensitivity
CN201331418Y (en) * 2008-10-13 2009-10-21 潍坊潍柴零部件机械有限公司 Air-tightness detection device of shell body

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
《工程热物理学报》 20010630 朱德忠,等 用二氧化碳作为示踪气体检测汽车车灯的气密性 , *
《火工品》 20020930 席兰霞,等 密封性检测方法综述 , 第3期 *
席兰霞,等: "密封性检测方法综述", 《火工品》, no. 3, 30 September 2002 (2002-09-30) *
朱德忠,等: "用二氧化碳作为示踪气体检测汽车车灯的气密性", 《工程热物理学报》, 30 June 2001 (2001-06-30) *
赵亮,等: "汽车车灯气密性漏气检测技术的应用", 《上海汽车》, 31 May 2000 (2000-05-31) *
赵红: "化学实验装置气密性的检查", 《中国教育技术装备》, no. 6, 30 June 2006 (2006-06-30) *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102486429A (en) * 2010-12-06 2012-06-06 海洋王照明科技股份有限公司 Sealing property detection device
CN102486429B (en) * 2010-12-06 2015-03-11 海洋王照明科技股份有限公司 Sealing property detection device
CN102121866A (en) * 2010-12-10 2011-07-13 东莞勤上光电股份有限公司 Airtightness test method of lamp
CN102608546A (en) * 2011-01-19 2012-07-25 广州市熠芯节能服务有限公司 Dynamic IP (Ingress Protection) testing method for LED (Light-Emitting Diode) illuminating lamp
CN102608546B (en) * 2011-01-19 2015-09-09 广州市熠芯节能服务有限公司 A kind of LED illumination lamp dynamic IP method of testing
CN103245467A (en) * 2012-02-07 2013-08-14 海洋王(东莞)照明科技有限公司 Detection method for sealing performance of lamp
CN105509976A (en) * 2014-10-16 2016-04-20 大陆汽车电子(长春)有限公司 Leakage test method and device of engine control unit
CN104568330A (en) * 2014-12-20 2015-04-29 江门市光之典照明有限公司 Method and device for testing lamp sealing property
CN105258864A (en) * 2015-11-26 2016-01-20 玉柴联合动力股份有限公司 Method for detecting sealing of supercharger midbody
CN107525635A (en) * 2017-07-24 2017-12-29 佛山市毅丰电器实业有限公司 A kind of light fixture air-tightness waterproof testing method
CN109781363A (en) * 2018-12-28 2019-05-21 青岛海尔股份有限公司 The detection method and detection device of refrigerator leakproofness

Similar Documents

Publication Publication Date Title
US2618151A (en) Cell for measuring relative permeability
CN1720432B (en) Methods and apparatus for detection of large leaks in sealed articles
Ranjit et al. Investigation of lock-in infrared thermography for evaluation of subsurface defects size and depth
Drake et al. Laser measurements on nonpremixed & air flames for assessment of turbulent combustion models
Dudić et al. Leakage quantification of compressed air using ultrasound and infrared thermography
Huang et al. Microchannel pressure measurements using molecular sensors
USH1045H (en) Air bubble leak detection test device
BR0208618A (en) Fluid inspection apparatus, method for measuring the color property of optically dense liquids and method for correcting stray light leakage
RU2008134728A (en) METHOD AND DEVICE FOR CALIBRATED Borehole Spectral Analysis of Fluids
CN105866331A (en) Gas sensor test system for dynamic and static gas distribution dual purposes
Carroll et al. Step response of pressure-sensitive paints
US20090277249A1 (en) Method and device for determining the quality of seal of a test object
CN104677771B (en) A method of shale porosity is determined based on magnetic suspension gravimetric method
Bouvier et al. Experimental study of heat transfer in oscillating flow
CN103758513B (en) A kind of evaluation method simulating full-size well wall stability
CN102792138B (en) For determining the method and apparatus leaked
KR970066533A (en) Leak Testers and Leak Testing Methods
CN101008992A (en) Method for detecting leakage of pipeline based on artificial neural network
CN202033160U (en) Air-tightness tester
BRPI0703390A2 (en) method for testing fluid compatibility along the borehole extension in a well, method for performing fluid compatibility test over the borehole extension in a well, and tool along the borehole extension for conducting compatibility compatibility testing. fluids with a subterranean formation fluid
BRPI0508513A (en) body fluid analytical meter and cartridge system to perform combined testing of general chemicals and specific bonds
CN104297126A (en) Device and method applied to measurement of low-permeability reservoir gas seepage start-up pressure gradient
CN103257104B (en) A kind of protective materials cold-and-heat resistent pulsating fatigue test unit
BRPI0409972A (en) methods for determining a formation fluid density gradient, for operating a multiple probe formation test tool, and for correcting a formation gradient determined by formation pressure measurements
Sakaue et al. Porous pressure-sensitive paint for characterizing unsteady flowfields

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20100929