CN108387343B - Baking oven air leakage point quickly detects positioning device and method - Google Patents
Baking oven air leakage point quickly detects positioning device and method Download PDFInfo
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- CN108387343B CN108387343B CN201810170950.7A CN201810170950A CN108387343B CN 108387343 B CN108387343 B CN 108387343B CN 201810170950 A CN201810170950 A CN 201810170950A CN 108387343 B CN108387343 B CN 108387343B
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- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
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Abstract
The invention discloses baking oven air leakage points quickly to detect positioning device and method.The technical solution that the present invention introduces belongs to obturator gas leakage detection technique field, and quickly detecting positioning device includes oxygen analyzer, sampling pipe and sampling box.The oxygen analyzer is connected by sampling pipe with sampling box.The sampling pipe is soft refractory seals pipe, sampling box by sample gas by sampling pipe be sent into oxygen analyser, provide it is a kind of by way of to oven interior key area multiposition sampling analysis oxygen concentration come realize quickly search baking oven air leakage point baking oven air leakage point quickly detect positioning device and method.
Description
Technical field
The invention belongs to obturator gas leakage detection technique fields, and in particular to a kind of baking oven air leakage point quickly detects positioning
Device and method.
Background technique
Large-scale baking oven (Hellermachine) is a kind of equipment being made of a variety of components, is used for ball bonding module and substrate
Tin ball bonding.Original part to be welded enters oven interior with the conveyer belt of baking oven, forms an inert gas shielding in baking oven
Environment welds original part to be welded under inert gas shielding environment.The concentration (unit: ppm) of O2 in the welding process
It is a key process parameter, it shows the oxygen leakage amount in nitrogen reflow soldering furnace.Nitrogen in furnace is to guarantee to weld
In journey when solder fusing and formed one allow alloy of the liner with substrate in conjunction with when will not aoxidize, therefore, baking oven sealing energy
Power is the key that determine production and quality.
Air leakage is the chronic problem for causing the concentration of baking oven O2 out of control.Air leakage will lead to solder ball surface oxide layer
Increase, so that production loss is higher, influences quality and safety.For a size in 6.5m × 1.6m × 1.5m typical reflow
Brazier formula baking oven, the concentration that any air leakage point of an aperture size will lead to O2 is out of control or even exceeded, is needed at this time at one
This pinhole leak point is found in big baking oven to solve this problem, difficulty and workload all can be very huge.
Summary of the invention
The purpose of the present invention is to provide a kind of by oven interior key area multiposition sampling analysis oxygen concentration
Mode come realize quickly search baking oven air leakage point baking oven air leakage point quickly detect positioning device and method.
The purpose of the present invention is what is be achieved through the following technical solutions:
Baking oven air leakage point quickly detects positioning device, characterized by comprising: oxygen analyzer, sampling pipe and sampling box；Institute
Oxygen analyzer is stated to be connected by sampling pipe with sampling box；The sampling pipe is soft refractory seals pipe, and sampling box will sample gas
Body is sent into oxygen analyzer by sampling pipe.
The sampling box is hollow and one side has the strip rectangular box of thieff hatch.
The oxygen analyzer has vacuum generator, and vacuum generator in sampling process for making sampling pipe and sampling
Vacuum is formed in box to sample the gas in baking oven.Oxygen analyzer carries out sampling analysis to the oxygen concentration of each point in baking oven
And the sample gas being in control in sampling box is sampled by described, oxygen instrument is a kind of online process Analyzer of industry, not only
It is widely used in the detection of oxygen concentration in mixed gas in the occasions such as heating furnace, chemical reaction container, ground well, industry nitrogen processed,
It is also largely used to the detection of oxygen in water in boiler, sewage-treatment plant outlet water dissolved oxygen, oxygen instrument type is more, detection
Principle is different, with strong points, therefore should select suitable instrument according to different use occasions, different process situation, such as at this
Oxygen content tests and analyzes in kind baking oven, so that it may which the oxygen of selection such as model Rapidox1100ZOxygenAnalyser is analysed
Instrument.
The metal wire net flexible hose that the sampling pipe is flat≤200 DEG C of resistance to warm water, the hose of metal establishment have it is good can
Plasticity and toughness, it is extremely durable, it is also convenient for transmitting push-and-pull, has combined fabulous heat-resisting ability.
The position mark of test point in corresponding baking oven, i.e., when in use, sampling pipe are done on the outside of the sampling pipe
Protruding into position corresponding to every entrance one position mark i.e. sampling box is exactly a sampled point in baking oven.
Zhi Jing≤20mm of the sampling pipe, the metal that currently used diameter is 20mm work out hose as sampling pipe,
It has been able to meet testing requirements by use repeatedly, sampling transmission and pull control and tautness etc., which can meet, to be wanted
It asks, the customization sampling pipe of Zhi Jing≤10mm currently in use, the customization metal establishment hose that diameter is 10mm or so, which is used as, to be adopted
Sample pipe can be improved sampling transmission speed and reduce interference.
Baking oven air leakage point quickly detects localization method, which comprises the following steps:
Sampling box setting, sampling box is placed on the conveyer belt of baking oven, and sampling box is connected to by sampling pipe with oxygen analyzer；
Baking oven is opened in baking oven starting, and starting conveyer belt loosens sampling pipe and is sent into an oven sampling box, according to sampling pipe
The length protruded into judges position of the sampling box in baking oven, and judges whether sampling box arrives according to the position mark on sampling pipe
Up to predetermined sampling location；
Sampling analysis stops conveyer belt when judging that sampling box reaches predetermined sampling location according to the position mark on sampling pipe
Start to sample, sample gas is sent into oxygen analyzer by sampling pipe and analyzed by sampling box, reopens after the completion of sampling defeated
It send band to send sampling box to next predetermined sampling location and carries out sampling analysis, until completing to carry out all predetermined sampling locations
Sampling analysis；
As a result it exports, leak position is confirmed according to the sampling analysis result of oxygen analyzer.
In the sampling analysis, sampling box stops the time that each predetermined sampling location is sampled in an oven as 3s, passes through
The time of overtesting and test, 3s can the accurate and enough gas sample for acquiring predetermined collection point.
It include to this when sampling box in an oven samples each predetermined sampling location in the sampling analysis
The process that position all directions are sampled by several times, sampling box lead to after each predetermined sampling location completes sampling to a direction
Cross sampling of the direction realization in rotation sampling pipe adjustment sampling box up-sampling hole to next direction.
The time sampled every time is 3s, can be shorter after using new sampling pipe.
In the result output, oxygen analyzer analyzes the oxygen concentration in the gas of sampling, and will be each predetermined
The oxygen density value of sampled point is depicted as waveform diagram, the highest position of crest location, that is, oxygen concentration in figure, that is, baking oven
The corresponding position of interior air leakage point.
It include to the position when sampling box in an oven samples each predetermined sampling location in sampling analysis
The process that all directions are sampled by several times is set, sampling box passes through after sampling is completed to a direction in each predetermined sampling location
Rotate sampling of the direction realization in sampling pipe adjustment sampling box up-sampling hole to next direction, in result output, oxygen analyzer
Oxygen concentration in the gas of sampling is analyzed, and the oxygen density value of each predetermined sampling location corresponding direction is distinguished
It is depicted as waveform diagram, the highest position of crest location, that is, oxygen concentration in figure is exactly the corresponding position of air leakage point in baking oven, respectively
Opening the waveform diagram medium wave peak position highest direction of oxygen density value is exactly the corresponding direction of air leakage point in baking oven.
Baking oven air leakage point provided by the invention quickly detects positioning device and method, is made by target oxygen concentration in baking oven
For examination criteria, in the sample gas sample from sampling box that is transmitted using oxygen analyzer reception and analysis by sampling pipe
Oxygen density value is interior by the index at sampling point position as baking oven, can intuitively be found out in baking oven by target oxygen concentration
The state of each position, the key component of baking oven have the oxygen concentration of the position of air leakage point can be high in helium environment
In other positions, only needs directly to check in the highest position of the oxygen concentration of measurement in maintenance process, greatly reduce
The difficulty of maintenance maintenance, and the process checked is that sampling probe is sent into predetermined adopt by conveyer belt by being carried using baking oven
Sample position substantially reduces the design volume of device, also reduces the design requirement in measurement checking process for opening size.
Detailed description of the invention
It is of the invention aforementioned and be detailed description below and become more apparent upon when reading in conjunction with the following drawings, in attached drawing:
Fig. 1 is the structural schematic diagram that baking oven air leakage point of the present invention quickly detects positioning device；
Fig. 2 is the schematic top plan view of sampling box of the present invention；
Fig. 3 is the semi-section schematic diagram of sampling box of the present invention；
Fig. 4 is present invention detection localization method flow diagram；
Fig. 5 is the waveform illustrated example that the oxygen density value of each predetermined sampling location is depicted as.
In figure:
1, oxygen analyzer；2, sampling pipe；3, sampling box；4, thieff hatch.
Specific embodiment
It is further illustrated below by several specific embodiments and realizes the object of the invention technical solution, need to illustrate
It is that claimed technical solution includes but is not limited to following embodiment.
Embodiment 1
Such as Fig. 1, baking oven air leakage point quickly detects positioning device, comprising: oxygen analyzer 1, sampling pipe 2 and sampling box 3.It is described
Oxygen analyzer 1 is connected by sampling pipe 2 with sampling box 3.The sampling pipe 2 is soft refractory seals pipe, and sampling box 3 will sample
Gas is sent into oxygen analyzer by sampling pipe 2 and utilizes oxygen analyzer 1 by target oxygen concentration in baking oven as examination criteria
The sample gas sample from sampling box 3 that reception and analysis are transmitted by sampling pipe 2.By the oxygen concentration of sample gas sample
Value is interior by the index at sampling point position as baking oven, can visually see each position in baking oven by target oxygen concentration
State.The key component of baking oven has the oxygen concentration of the position of air leakage point that can be higher than other positions in helium environment
The oxygen concentration set.It only needs directly to check in the highest position of the oxygen concentration of measurement in maintenance process, subtract significantly
The small difficulty of maintenance maintenance.Also, checking process is that the conveyer belt by being carried using baking oven is predetermined by sampling probe feeding
Sampling location substantially reduces the design volume of device, also reduces and the design of opening size is wanted in measurement checking process
It asks.
Embodiment 2
As shown in Figure 1, baking oven air leakage point quickly detects positioning device, comprising: oxygen analyzer 1, sampling pipe 2 and sampling box 3.
The oxygen analyzer 1 is connected by sampling pipe 2 with sampling box 3.The sampling pipe 2 is soft refractory seals pipe, and sampling box 3 will
Sample gas is sent into oxygen analyzer by sampling pipe 2 and is analysed by target oxygen concentration in baking oven as examination criteria using oxygen
The sample gas from sampling box 3 that 1 reception and analysis of instrument are transmitted by sampling pipe 2.Using the oxygen density value in sample as
By the index at sampling point position in baking oven, the shape of each position in baking oven can be intuitively found out by target oxygen concentration
State.The key component of baking oven has the oxygen concentration of the position of air leakage point that can be higher than other positions in helium environment
Oxygen concentration.It only needs directly to check in the highest position of the oxygen concentration of measurement in maintenance process, substantially reduce
The difficulty of maintenance maintenance, and the process checked is by the way that sampling probe is sent into predetermined sampling using baking oven included conveyer belt
Position substantially reduces the design volume of device, also reduces the design requirement in measurement checking process for opening size.
As shown in Figures 2 and 3, the sampling box 3 is hollow and one side has the strip rectangular box of thieff hatch 4.Sampling box 3 one
End be connected to by sampling pipe 2 with oxygen analyzer 1, and baking oven does not need very greatly, to sample for being put into the opening of sampling box 3 when use
Box 3 is placed on the conveyer belt of baking oven, starts baking oven, as the progressive sampling pipe 2 that is slowly put into of sampling box 3 can be by sampling box
3 send to sampling location.The oxygen analyzer 1 has vacuum generator, and vacuum generator in sampling process for sample
Vacuum is formed in pipe 2 and sampling box 3 to sample the gas in baking oven.Oxygen concentration of the oxygen analyzer 1 to each point in baking oven
Sampling analysis is carried out, and the sample gas in sampling box 3 is obtained by the sampling pipe 2.Oxygen instrument is a kind of online mistake of industry
Journey analysis meter is not only widely used in the occasions such as heating furnace, chemical reaction container, ground well, industry nitrogen in mixed gas
The detection of oxygen concentration is also largely used to the detection of oxygen in water in boiler, sewage-treatment plant outlet water dissolved oxygen, oxygen
Instrument type is more, and testing principle is different, with strong points, therefore should be selected properly according to different use occasions, different process situation
Instrument.Oxygen content in baking oven of the present invention is tested and analyzed, can choose such as model
The oxygen analyzer of Rapidox1100ZOxygenAnalyser.The sampling pipe 2 is flat≤200 DEG C of resistance to warm water metal knitted soft
Pipe, the hose of metal establishment has good plasticity and toughness, extremely durable, is also convenient for transmitting push-and-pull, has combined pole
Good heat-resisting ability.The outside of the sampling pipe 2 has the position mark of test point in corresponding baking oven that is, when in use to adopt
Sample pipe 2 protrude into every to enter position corresponding to a position mark i.e. sampling box 3 be exactly a sampled point in baking oven.It is described
Zhi Jing≤20mm of sampling pipe 2, the metal that currently used diameter is 20mm work out hose as sampling pipe 2, sampling are passed
The control of defeated and pull and tautness etc. can be met the requirements.The customization sampling pipe 2 of Zhi Jing≤10mm currently in use, directly
The customization metal that diameter is 10mm or so, which works out hose as sampling pipe 2, can be improved sampling transmission speed reduction interference.
Embodiment 3
As described in Fig. 1 to 4, describes a kind of baking oven air leakage point and quickly detects localization method, comprising the following steps:
Such as the S1 in Fig. 4, sampling box 3 is placed on the conveyer belt of baking oven, sampling box 3 passes through sampling pipe 2 and oxygen analyzer 1
Connection.
Such as the S2 in Fig. 4, baking oven is opened, starting conveyer belt loosens sampling pipe 2 and is sent into an oven sampling box 3, according to adopting
The length that sample pipe 2 protrudes into judges position of the sampling box 3 in baking oven, and judges sampling according to the position mark on sampling pipe 2
Whether box 3 reaches predetermined sampling location.
Such as the S3 in Fig. 4, stopping when judging that sampling box 3 reaches predetermined sampling location according to the position mark on sampling pipe 2
Conveyer belt starts to sample, and sample gas is sent into oxygen analyzer by sampling pipe 2 and analyzed by sampling box 3, weight after the completion of sampling
It newly opens conveyer belt to send sampling box 3 to next predetermined sampling location progress sampling analysis, until completing to make a reservation for adopt to all
Sample position carries out sampling analysis.
Such as the S4 in Fig. 4, leak position is confirmed according to the sampling analysis result of oxygen analyzer.
Embodiment 4
As described in Fig. 1 to 4, describes a kind of baking oven air leakage point and quickly detects localization method, comprising the following steps:
Such as the S1 in Fig. 4, sampling box 3 is placed on the conveyer belt of baking oven, sampling box 3 passes through sampling pipe 2 and oxygen analyzer 1
Connection.
Such as the S2 in Fig. 4, baking oven is opened, starting conveyer belt loosens sampling pipe 2 and is sent into an oven sampling box 3, according to adopting
The length that sample pipe 2 protrudes into judges position of the sampling box 3 in baking oven, and judges sampling according to the position mark on sampling pipe 2
Whether box 3 reaches predetermined sampling location.
Such as the S3 in Fig. 4, stopping when judging that sampling box 3 reaches predetermined sampling location according to the position mark on sampling pipe 2
Conveyer belt starts to sample, and sample gas is sent into oxygen analyzer by sampling pipe 2 and analyzed by sampling box 3, weight after the completion of sampling
It newly opens conveyer belt to send sampling box 3 to next predetermined sampling location progress sampling analysis, until completing to make a reservation for adopt to all
Sample position carries out sampling analysis.It include to the position when sampling box 3 in an oven samples each predetermined sampling location
The process that all directions are sampled by several times, sampling box 3 pass through after sampling is completed to a direction in each predetermined sampling location
It rotates sampling pipe 2 and adjusts sampling box 3 and up-sample the direction in hole 4 and realize sampling to next direction, the time sampled every time is
3s, after using diameter and working out hose sampling pipe 2 for the customization metal of 10mm or so, since the raising of efficiency of transmission can make
The time that must be sampled is shorter.
Such as the S4 in Fig. 4, oxygen analyzer analyzes the oxygen concentration in the gas of sampling, and by each predetermined sampling
The oxygen density value of point is depicted as waveform diagram, the highest position of crest location, that is, oxygen concentration in figure, that is, leakage in baking oven
The corresponding position of gas point.
Embodiment 5
As described in Fig. 1 to 4, describes a kind of baking oven air leakage point and quickly detects localization method, comprising the following steps:
Such as the S1 in Fig. 4, sampling box 3 is placed on the conveyer belt of baking oven, sampling box 3 passes through sampling pipe 2 and oxygen analyzer 1
Connection.
Such as the S2 in Fig. 4, baking oven is opened, starting conveyer belt loosens sampling pipe 2 and is sent into an oven sampling box 3, according to adopting
The length that sample pipe 2 protrudes into judges position of the sampling box 3 in baking oven, and judges sampling according to the position mark on sampling pipe 2
Whether box 3 reaches predetermined sampling location.
Such as the S3 in Fig. 4, stopping when judging that sampling box 3 reaches predetermined sampling location according to the position mark on sampling pipe 2
Conveyer belt starts to sample, and sample gas is sent into oxygen analyzer by sampling pipe 2 and analyzed by sampling box 3, weight after the completion of sampling
It newly opens conveyer belt to send sampling box 3 to next predetermined sampling location progress sampling analysis, until completing to make a reservation for adopt to all
Sample position carries out sampling analysis.It include to the position when sampling box 3 in an oven samples each predetermined sampling location
The process that all directions are sampled by several times, sampling box 3 pass through after sampling is completed to a direction in each predetermined sampling location
It rotates sampling pipe 2 and adjusts sampling box 3 and up-sample the direction in hole 4 and realize sampling to next direction, the time sampled every time is
3s, after using diameter and working out hose sampling pipe 2 for the customization metal of 10mm or so, since the raising of efficiency of transmission can make
The time that must be sampled is shorter.It include each to the position when sampling box 3 in an oven samples each predetermined sampling location
The process that a direction is sampled by several times, sampling box 3 is after each predetermined sampling location completes sampling to a direction by turning
Dynamic sampling pipe 2 adjusts sampling box 3 and up-samples sampling of the direction realization in hole 4 to next direction.In result output, oxygen analyzer
Oxygen concentration in the gas of sampling is analyzed, and the oxygen density value of each predetermined sampling location corresponding direction is distinguished
It is depicted as waveform diagram, the highest position of crest location, that is, oxygen concentration in figure is exactly the corresponding position of air leakage point in baking oven, respectively
Opening the waveform diagram medium wave peak position highest direction of oxygen density value is exactly the corresponding direction of air leakage point in baking oven.
Such as the S4 in Fig. 4, oxygen analyzer analyzes the oxygen concentration in the gas of sampling, and by each predetermined sampling
The oxygen density value of point is depicted as waveform diagram.Fig. 5 shows oxygen density value waveform diagram, acquires the tow sides of 16 positions
Gaseous sample carries out analysis and the figure (Lane1 is front, and Lane2 is bottom surface) with tow sides gas sample, the wave crest in figure is made
Position (about 350ppm) the i.e. highest position of oxygen concentration, that is, the corresponding position of air leakage point in baking oven, and the peak of Lane2
It is worth higher, therefore leak source is maximum the bottom surface of the sample region Z12 a possibility that.
Claims (9)
1. baking oven air leakage point quickly detects localization method, which is characterized in that use including oxygen analyzer (1), sampling pipe (2) and adopt
Sample box (3) and the oxygen analyzer (1) pass through the baking oven air leakage point that sampling pipe (2) are connected with sampling box (3) and quickly detect positioning
Device implements the steps of:
Sampling box (3) is placed on the conveyer belt of baking oven, sampling box (3) is connected to by sampling pipe (2) with oxygen analyzer (1)；
Baking oven is opened, starting conveyer belt loosens sampling pipe (2) and is sent into an oven sampling box (3), protrudes into according to sampling pipe (2)
Length judge position of the sampling box (3) in baking oven, and sampling box (3) are judged according to the position mark on sampling pipe (2)
Whether predetermined sampling location is reached；
Stop conveyer belt when judging that sampling box (3) reach predetermined sampling location according to the position mark on sampling pipe (2) to start to adopt
Sample gas is sent into oxygen analyzer by sampling pipe (2) and analyzed, reopened after the completion of sampling defeated by sample, sampling box (3)
It send band to send sampling box (3) to next predetermined sampling location and carries out sampling analysis, until completing to all predetermined sampling locations
Carry out sampling analysis；It include each to the position when sampling box (3) in an oven samples each predetermined sampling location
The process that direction is sampled by several times, sampling box (3) is after each predetermined sampling location completes sampling to a direction by turning
The direction of dynamic sampling pipe (2) adjustment sampling box (3) up-sampling hole (4) realizes the sampling to next direction；
Leak position is confirmed according to the sampling analysis result of oxygen analyzer.
2. baking oven air leakage point as described in claim 1 quickly detects localization method, it is characterised in that: the time sampled every time is equal
For 3s.
3. baking oven air leakage point as described in claim 1 quickly detects localization method, it is characterised in that: oxygen analyzer is to sampling
Oxygen concentration in gas is analyzed, and the oxygen density value of each predetermined sampling location is depicted as waveform diagram, in figure
The highest position of crest location, that is, oxygen concentration, that is, the corresponding position of air leakage point in baking oven.
4. baking oven air leakage point as described in claim 1 quickly detects localization method, it is characterised in that: sampling box (3) is in baking oven
In when being sampled to each predetermined sampling location, include the process that the position all directions are sampled by several times, sampling
Box (3) is after each predetermined sampling location completes sampling to a direction by adopting in rotation sampling pipe (2) adjustment sampling box (3)
The direction in sample hole (4) realizes the sampling to next direction, and oxygen analyzer analyzes the oxygen concentration in the gas of sampling, and
The oxygen density value of each predetermined sampling location corresponding direction is depicted as waveform diagram respectively, crest location, that is, oxygen in figure is dense
Spending highest position is exactly the corresponding position of air leakage point in baking oven, each highest side of waveform diagram medium wave peak position oxygen density value
To being exactly the corresponding direction of air leakage point in baking oven.
5. baking oven air leakage point as described in claim 1 quickly detects localization method, it is characterised in that: the sampling pipe (2) is
Sample gas is sent into oxygen analyzer by sampling pipe (2) by soft refractory seals pipe, sampling box (3)；The sampling box (3) is
Hollow and one side has the strip rectangular box of thieff hatch (4)；Test point in corresponding baking oven is done on the outside of the sampling pipe (2)
Position mark.
6. baking oven air leakage point as described in claim 1 quickly detects localization method, characterized by comprising: the oxygen analyzer
(1) vacuum generator is had, vacuum generator is true for making to be formed in sampling pipe (2) and sampling box (3) in sampling process
Sky samples the gas in baking oven.
7. baking oven air leakage point as described in claim 1 quickly detects localization method, characterized by comprising: the sampling pipe
It (2) is flat≤200 DEG C of the metal wire net flexible hose of resistance to warm water.
8. baking oven air leakage point as described in claim 1 quickly detects localization method, characterized by comprising: the sampling pipe
(2) Zhi Jing≤20mm.
9. baking oven air leakage point as described in claim 1 quickly detects localization method, characterized by comprising: the sampling pipe
(2) Zhi Jing≤10mm.
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| JP6778880B1 (en) * | 2020-06-29 | 2020-11-04 | 千住金属工業株式会社 | How to detect abnormalities in soldering equipment and packing |
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| CN108387343A (en) | 2018-08-10 |
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