CN209459979U - A kind of auto parts and components VOC automatic sampling apparatus - Google Patents
A kind of auto parts and components VOC automatic sampling apparatus Download PDFInfo
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- CN209459979U CN209459979U CN201822062561.0U CN201822062561U CN209459979U CN 209459979 U CN209459979 U CN 209459979U CN 201822062561 U CN201822062561 U CN 201822062561U CN 209459979 U CN209459979 U CN 209459979U
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Abstract
The utility model discloses a kind of auto parts and components VOC automatic sampling apparatus.Described device includes controller, multi-channel sampling channel and cleaning unit；Every road sampling channel includes being electrically connected with the controller and being pumped by the sequentially connected Constant flow sample of gas-guide tube, sampling baroceptor, sample solenoid valve, and being connected and connect the thief hatch of the sampler bag in components sampling cabin with sampling solenoid valve；Constant flow sample pump is equipped with VOC suction pipe；Cleaning unit connects thief hatch by gas-guide tube.The utility model realizes the automatic sampling of auto parts and components VOC, solves the problems such as time-consuming and laborious existing for existing artificial sample and sampling time, gas pressure and flow etc. are difficult to control accurately；The utility model can be realized the automatic cleaning of sampler bag, remove remaining VOC in sampler bag by setting cleaning unit, be conducive to improve VOC detection accuracy.
Description
Technical field
The utility model belongs to vehicle air quality-monitoring field, and in particular to a kind of auto parts and components VOC
(volatile organic compounds, volatile organic compounds) automatic sampling apparatus.
Background technique
With the research polluted to vehicle air, people increasingly pay attention to vehicle air quality.From vapour
The VOC of in-car decorations components and material is the main reason for influencing in-car air quality.Currently, domestic and international main engine plants, laboratory
The monitoring of auto parts and components VOC is tested using sack method.When the method is to the pump discharge of acquisition, acquisition
Between, sampling volume etc. have accurate requirement, if not reaching requirement the accuracy that will directly influence final detection result.
And the process of this method acquisition is all manual hand manipulation at present, not only test efficiency is low, and more important is be difficult to essence
It determines amount and real time monitoring, is also easy to appear artificial operating error.
Utility model content
In order to solve the above-mentioned problems in the prior art, the utility model proposes a kind of auto parts and components VOC is automatic
Sampling apparatus.
To achieve the above objectives, the present invention adopts the following technical solutions:
The utility model provides a kind of auto parts and components VOC automatic sampling apparatus, including controller, multi-channel sampling channel and
Cleaning unit.Every road sampling channel includes being electrically connected with the controller and by the sequentially connected Constant flow sample pump of gas-guide tube, sampling
Baroceptor, sampling solenoid valve, and be connected with sampling solenoid valve and connect the sampler bag being located in components sampling cabin
Thief hatch.Constant flow sample pump is equipped with VOC suction pipe.Cleaning unit connects thief hatch by gas-guide tube, for removing in sampler bag
Remaining VOC.
Compared with prior art, the utility model has the following beneficial effects:
The utility model proposes a kind of auto parts and components VOC automatic sampling apparatus, by setting controller and multichannel adopt
Sample channel realizes the automatic sampling of auto parts and components VOC, solves time-consuming and laborious existing for existing artificial sample and sampling
The problems such as time, gas pressure and flow etc. are difficult to control accurately；The utility model can be realized and be adopted by setting cleaning unit
Remaining VOC in sampler bag is removed in the automatic cleaning of sample bag, is conducive to improve VOC detection accuracy.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of auto parts and components VOC automatic sampling apparatus of the utility model embodiment.
In figure: 1- controller, 2- Constant flow sample pump, 3- sample baroceptor, and 4- samples solenoid valve, 5- thief hatch, 6-
Cleaning unit, 60- solenoid purge valve, 61- vacuumize solenoid valve, and 62- vacuumizes baroceptor, 63- vacuum generator, 64-
Inflated with nitrogen solenoid valve, 65- gas flow switch, 66- source nitrogen.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
A kind of structure chart of auto parts and components VOC automatic sampling apparatus of the utility model embodiment is as shown in Figure 1, include control
Device 1, multi-channel sampling channel and cleaning unit 6 processed.Every road sampling channel includes being electrically connected with controller 1 and passing through gas-guide tube successively
Constant flow sample pump 2, sampling baroceptor 3, the sampling solenoid valve 4 of connection, and the connection being connected with sampling solenoid valve 4 sample
The thief hatch 5 of bag.Constant flow sample pump 2 is equipped with VOC suction pipe.Cleaning unit 6 connects thief hatch 5 by gas-guide tube, for removing
Remaining VOC in sampler bag.
In the present embodiment, described device is mainly made of controller 1, multi-channel sampling channel and cleaning unit 6.Controller
1 is mainly used for data processing and electrical control, realizes the cleaning of sampler bag and adopting automatically for auto parts and components VOC at the control
Sample.Microprocessor or PLC programmable controller can be used in controller 1.The structure of each road sampling channel is identical, mainly by air guide
Manage 5 groups of thief hatch that sequentially connected Constant flow sample pump 2, samples baroceptor 3, samples solenoid valve 4 and connect with sampler bag
At.Sampler bag is sealed after being packed into components with strip of paper used for sealing.In order to not influence VOC measurement accuracy, sampler bag must be used not comprising VOC
Material, such as polytetrafluoroethylene (PTFE).For Constant flow sample pump 2 for the gas in sampler bag to be released, Constant flow sample pump 2 is equipped with VOC
Suction pipe, the VOC for including in adsorbed gas.Constant flow sample pump 2 can be realized Constant flow sample, that is, the gas flow released
(gas volume that the unit time is flowed through) is constant, and can set different flows under the effect of controller 1.Therefore, as long as
Know that the sampling time can calculate gas volume, then the VOC mass by adsorbing on detection VOC suction pipe, to can be adopted
The VOC concentration of sample gas, unit are generally milligram/cubic meter.Sampling baroceptor 3, can for measuring sample gas pressure
With the pressure of real-time measurement sample gas.Sampling solenoid valve 4 is used to open or close sampling channel under the effect of controller 1.Clearly
It washes unit 6 to be connected with thief hatch 5, for removing remaining VOC in sampler bag, to improve measurement accuracy.
Preferably, Constant flow sample pumps 2 optional Gilibrator3 type sampling pumps, and sampling baroceptor 3 can be selected
Pse533-R06-C2L type sensor, sampling solenoid valve 4 can be selected VX214FA type two and lead to straight-through type vacuum solenoid valve.
The present embodiment realizes the automatic sampling of auto parts and components VOC by setting controller 1 and multi-channel sampling channel,
It solves time-consuming and laborious existing for existing artificial sample and sampling time, gas pressure and flow etc. and is difficult to control accurately etc. and ask
Topic；The present embodiment can be realized the automatic cleaning of sampler bag, remove remaining VOC in sampler bag by setting cleaning unit 6,
Be conducive to improve VOC detection accuracy.
As a kind of alternative embodiment, the cleaning unit 6 include by the sequentially connected vacuum generator 63 of gas-guide tube,
It vacuumizes solenoid valve 61, vacuumize baroceptor 62 and solenoid purge valve 60 identical with sampling 4 quantity of solenoid valve, cleaning electricity
One end of magnet valve 60 by gas-guide tube be connected to and be connected with baroceptor 62 is vacuumized, 60 other end of solenoid purge valve respectively with
Thief hatch 5 is connected；It further include by the sequentially connected source nitrogen 66 of gas-guide tube, gas flow switch 65 and inflated with nitrogen solenoid valve
64, the other end of inflated with nitrogen solenoid valve 64 is connected with one end that solenoid purge valve 60 is connected to.Vacuum generator 63 vacuumizes electromagnetism
Valve 61, solenoid purge valve 60, vacuumizes baroceptor 62 and gas flow switch 65 and controller at inflated with nitrogen solenoid valve 64
1 electrical connection.
This gives a kind of specific implementations of cleaning unit 6.The Cleaning principle of cleaning unit 6 is to take out repeatedly
Vacuum is filled with nitrogen, utilizes remaining VOC in adsorption desorption characteristic displacement (cleaning) sampler bag of nitrogen.Cleaning unit 6 includes two
Part, a part are vacuumized for sampler bag, and another part is used for sampler bag inflated with nitrogen.Vacuumized part is specifically by successively connecting
The vacuum generator 63 that connects vacuumizes solenoid valve 61, vacuumizes baroceptor 62 and identical with sampling 4 quantity of solenoid valve clear
The composition of solenoid valve 60 is washed, one end of solenoid purge valve 60 is connected to by gas-guide tube and is connected with baroceptor 62 is vacuumized, clearly
60 other end of solenoid valve is washed to be connected with thief hatch 5 respectively.Vacuumize solenoid valve 61 and solenoid purge valve 60 be used to vacuumize it is logical
The on-off on road controls, and solenoid purge valve 60 is used for the control in each channel, vacuumize solenoid valve 61 be equivalent to it is total when vacuumizing
Switch.Baroceptor 62 is vacuumized for measuring air pressure, controller 1 is compared by the threshold value of the atmospheric pressure value and setting
Compared with judging the vacuum degree for whether reaching requirement in sampler bag.The path that gas flows in sampler bag when vacuumizing are as follows: sampler bag-
Solenoid purge valve 60-vacuumizing baroceptor 62-vacuumizes 61-vacuum generator of solenoid valve 63.Some vacuum generators
63 need compressed air that could start, and to connect compressed air in its air inlet.Preferably, vacuum generator 63 can be selected
ZZK204-A1L-B type packaging type vacuum generator 63.Inflated with nitrogen part (vacuumizes total with inflated with nitrogen in addition to solenoid purge valve 60
With) outside, it further include sequentially connected source nitrogen 66, gas flow switch 65 and inflated with nitrogen solenoid valve 64, inflated with nitrogen solenoid valve 64
The other end be connected with one end that solenoid purge valve 60 is connected to.Solenoid purge valve 60 and inflated with nitrogen solenoid valve 64 are logical for inflated with nitrogen
The on-off on road controls, and solenoid purge valve 60 is used for the control in each channel, total when inflated with nitrogen solenoid valve 64 is equivalent to inflated with nitrogen
Switch.Gas flow switch 65 is for measure the volume for being filled with nitrogen, the threshold value of controller 1 volume and setting by comparing
It is compared, judges whether the nitrogen amount for reaching cleaning requirement.The path that nitrogen flows through when inflated with nitrogen are as follows: 66-gas of source nitrogen
Flow switch 65-inflated with nitrogen solenoid valve 64-solenoid purge valve, 60-sampler bag.
As a kind of alternative embodiment, the quantity of the sampling channel is 3.
This gives a kind of embodiments of 3 sampling channels, as shown in Figure 1.The present embodiment be it is a kind of compared with
Good embodiment does not repel the embodiment of other sampling channel quantity.
As a kind of alternative embodiment, the gas-guide tube is polyfluortetraethylene pipe.
This gives a kind of embodiment of gas-guide tube, i.e. gas-guide tube uses polyfluortetraethylene pipe.Polytetrafluoroethyl-ne
The characteristics of alkene pipe is not include VOC, and gas-guide tube does not influence the measurement accuracy of VOC concentration using polyfluortetraethylene pipe.The present embodiment
A kind of only preferable embodiment does not repel other embodiments not comprising VOC.
As a kind of alternative embodiment, the VOC suction pipe includes: for adsorbing aldehyde ketone substance a DNPH pipe (aldehyde
Ketone trap tube), two TENAX for adsorbing benezene material manage (benzene homologues trap tube).
This gives a kind of embodiments of VOC suction pipe, and VOC suction pipe is using a DNPH pipe, for adsorbing aldehyde ketone
Substance and two TENAX pipes, for adsorbing benezene material.
As a kind of alternative embodiment, described device further includes the display being electrically connected with controller 1.
In the present embodiment, also set up the display being electrically connected with controller 1, be mainly used for show cleaning process and
Test parameters in sampling process.
As a kind of alternative embodiment, described device further includes the sound and light alarm module being electrically connected with controller 1.
In the present embodiment, also set up the sound and light alarm module being electrically connected with controller 1, be mainly used for when cleaning finish or
Sound-light alarm is issued when sampling is finished or broken down to be prompted.
The method that auto parts and components VOC is sampled automatically is carried out using aforementioned device, comprising the following steps:
S101, the power-up operation initialization program of controller 1, vacuumizes solenoid valve 61, solenoid purge valve 60, inflated with nitrogen electromagnetism
Valve 64 and gas flow switch 65 are in off-state.
S102 enters cleaning sampler bag program after initialization program.
S1021 opens vacuum generator 63, vacuumizes solenoid valve 61 and solenoid purge valve 60, if in the time of setting
Threshold value that is interior, being less than setting by vacuumizing the atmospheric pressure value that baroceptor 62 measures, i.e., reach the true of test requirements document in sampler bag
Dummy status, closing vacuumizes solenoid valve 61, and turns in next step；Otherwise, it issues alarm signal prompt to be overhauled, until normally turning
In next step.
S1022 opens inflated with nitrogen solenoid valve 64 and gas flow switch 65, when the nitrogen measured by gas flow switch 65
When flow reaches the threshold value of setting, i.e., when being full of nitrogen in sampler bag, close inflated with nitrogen solenoid valve 64 and gas flow switch 65.
S1023 repeats S1021 and S1022, and the wash number until reaching setting, last time sampler bag is in
Vacuum state.
S103 sets sampler bag in components sampling cabin, and installs VOC suction pipe on Constant flow sample pump 2；According to
S102 the method is filled with a certain amount of nitrogen into sampler bag；Set the trunon delay time of each Constant flow sample pump 2.
S104 after the trunon delay time of Constant flow sample pump 2 reaches, opens Constant flow sample pump 2；When sampling baroceptor
When 3 pressure values measured drop to the threshold value of setting, opens sampling solenoid valve 4 and start timing.Reach the sampling time of setting
Afterwards, Constant flow sample pump 2 and sampling solenoid valve 4 are closed.
It is above-mentioned that only several specific embodiments in the utility model are illustrated, but can not be as the utility model
Protection scope, the equivalent change or modification or equal proportion amplification or contracting that all design spirits according in the utility model are made
It is small etc., it is deemed to fall the protection scope of the utility model.
Claims (7)
1. a kind of auto parts and components VOC automatic sampling apparatus, which is characterized in that including controller, multi-channel sampling channel and cleaning
Unit；Every road sampling channel includes being electrically connected with the controller and by the sequentially connected Constant flow sample pump of gas-guide tube, sampling air pressure
Sensor, sampling solenoid valve, and it is connected and connect the sampling for the sampler bag being located in components sampling cabin with sampling solenoid valve
Mouthful；Constant flow sample pump is equipped with VOC suction pipe；Cleaning unit connects thief hatch by gas-guide tube, remains for removing in sampler bag
VOC.
2. auto parts and components VOC automatic sampling apparatus according to claim 1, which is characterized in that the cleaning unit packet
Include by the sequentially connected vacuum generator of gas-guide tube, vacuumize solenoid valve, vacuumize baroceptor and with sampling solenoid valve
One end of the identical solenoid purge valve of quantity, solenoid purge valve is connected to by gas-guide tube and is connected with baroceptor is vacuumized,
The solenoid purge valve other end is connected with thief hatch respectively；It further include being opened by the sequentially connected source nitrogen of gas-guide tube, gas flow
It closes and inflated with nitrogen solenoid valve, the other end of inflated with nitrogen solenoid valve is connected with one end that solenoid purge valve is connected to；Vacuum generator, pumping
Vacuum solenoid, inflated with nitrogen solenoid valve, solenoid purge valve, vacuumize baroceptor and gas flow switch with controller electricity
Connection.
3. auto parts and components VOC automatic sampling apparatus according to claim 1, which is characterized in that the sampling channel
Quantity is 3.
4. auto parts and components VOC automatic sampling apparatus according to claim 1, which is characterized in that the gas-guide tube is poly-
Tetrafluoroethene pipe.
5. auto parts and components VOC automatic sampling apparatus according to claim 1, which is characterized in that the VOC suction pipe packet
Include: a DNPH for adsorbing aldehyde ketone substance is managed, and two TENAX for adsorbing benezene material are managed.
6. auto parts and components VOC automatic sampling apparatus according to claim 1, which is characterized in that described device further includes
The display being electrically connected with the controller.
7. auto parts and components VOC automatic sampling apparatus according to claim 1, which is characterized in that described device further includes
The sound and light alarm module being electrically connected with the controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822062561.0U CN209459979U (en) | 2018-12-10 | 2018-12-10 | A kind of auto parts and components VOC automatic sampling apparatus |
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| CN201822062561.0U CN209459979U (en) | 2018-12-10 | 2018-12-10 | A kind of auto parts and components VOC automatic sampling apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289310A (en) * | 2018-12-10 | 2020-06-16 | 上汽通用五菱汽车股份有限公司 | Automatic VOC (volatile organic compounds) sampling device and method for automobile parts |
-
2018
- 2018-12-10 CN CN201822062561.0U patent/CN209459979U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111289310A (en) * | 2018-12-10 | 2020-06-16 | 上汽通用五菱汽车股份有限公司 | Automatic VOC (volatile organic compounds) sampling device and method for automobile parts |
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