CN106198825A - Volatile organic substance measuring system with multiple independent measuring subsystems - Google Patents
Volatile organic substance measuring system with multiple independent measuring subsystems Download PDFInfo
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- CN106198825A CN106198825A CN201510287677.2A CN201510287677A CN106198825A CN 106198825 A CN106198825 A CN 106198825A CN 201510287677 A CN201510287677 A CN 201510287677A CN 106198825 A CN106198825 A CN 106198825A
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- 239000000126 substance Substances 0.000 title claims description 3
- 239000007789 gas Substances 0.000 claims abstract description 290
- 238000005259 measurement Methods 0.000 claims abstract description 38
- 238000004817 gas chromatography Methods 0.000 claims description 62
- 239000005416 organic matter Substances 0.000 claims description 46
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 13
- 230000002159 abnormal effect Effects 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000009833 condensation Methods 0.000 claims description 5
- 230000005494 condensation Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 239000012855 volatile organic compound Substances 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 12
- 238000010186 staining Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000769 gas chromatography-flame ionisation detection Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
The present invention relates to a voc measurement system, and more particularly, to a voc measurement system having multiple independent measurement subsystems for measuring gases at multiple measurement points in a gas environment. The volatile organic compound measuring system with the independent measuring subsystems is used for measuring gas in a gas environment, can receive sample gas of a plurality of measuring points in different pipelines at the same time to measure, and does not have the problem of mutual pollution of the sample gas among the measuring points because the sample gas among different measuring points is transmitted in different pipelines.
Description
Technical field
The present invention relates to a kind of volatile organic matter measurement system, particularly relate to a kind of for at gas
In environment, the gas of multiple measuring points carries out the volatile organic matter with multiple independent measurement subsystem measured
Quality examining system.
Background technology
Along with the progress of human industry, air pollution the most little by little aggravates.Therefore, the most each key industry
Country all has the discharge to volatile organic matter (volatile organic compounds, VOCs) to work out
Control test, and have the strictest trend so that industrial gaseous environment would generally be required add
Dress can carry out, for the composition of volatile organic matter in gas, the measurement system that measures.
Above-mentioned volatile organic matter generally refers in normal conditions (0 DEG C and 760mmHg), and boiling point exists
250 DEG C, with purgation organic compound, even have people to be directly defined as by volatile organic matter, with gaseous form
The all organic compound being present in air, comprise THC (be called for short THC), non-methane total
The organic compound such as Hydrocarbon (being called for short NMHC).
The measurement system of volatile organic matter would generally include flame ion gas chromatograph and (be called for short
GC-FID), with by flame by volatile organic matter ionizing, and utilize ion can conductive characteristic detecting
Electric signal, amplified circuit unit output signal, and can convert and obtain volatility in such as gaseous environment and have
With this, the parameters such as the concentration of machine material, judge whether the gas in gaseous environment meets discharge standard.
But, current volatile organic matter measurement system often can be because of the problem of circuit design, and same
Pipeline can sequentially import the sample gas between multiple measuring points in gaseous environment, and there is multiple measurement
The problem of the sample gas cross staining between point, and also cannot in the same time sample to multiple measuring points
Gas measures, and so causes the accuracy of measurement of volatile organic matter is enjoyed query.
Therefore, how to provide the measurement system of a kind of volatile organic matter, to solve between multiple measuring point
The cross staining problem existing for sample gas, and reach in the same time sample gas to multiple measuring points
Body measures, it has also become the technology subject under discussion that dealer is paid close attention to now.
Summary of the invention
In view of the shortcoming of above-mentioned known techniques, the present invention propose a kind of have multiple independent measure waving of subsystem
The property sent out organic substance measurement system, for measuring the gas in gaseous environment, includes during operation and depends on
The collection and confinement of gases step that sequence is carried out and gas chromatography step, described volatile organic matter measurement system includes:
Gas positive pressure source, gas negative pressure source, controller, baking oven, the first subsystem and the second subsystem.
Described first subsystem includes: the first sample guides pipeline, receives the first measuring point in gaseous environment
Sample gas, using as gas to be measured and guide flowing；First sample air reservoir；Second sample air reservoir；
First gas chromatography sensing device；First gas separates pipe, for the gas to be measured at the second sample air reservoir
In isolate the gaseous compound specified.
Described second subsystem includes: the second sample guides pipeline, receives the second measurement in described gaseous environment
The sample gas of point, using as gas to be measured and guide flowing；3rd sample air reservoir；4th sample gas storage
Groove；Second gas chromatography sensing device；Second gas separates pipe, at described 4th sample air reservoir
Gas to be measured is isolated the gaseous compound specified.
Described baking oven has inner space and heater, and heater can heat inner space, makes inner space arrive
Reach a predetermined temperature, and avoid the first Sample introduction pipeline in inner space, the first sample air reservoir,
Two sample air reservoirs, first gas separate pipe, the second Sample introduction pipeline, the 3rd sample air reservoir, the 4th
Sample air reservoir and the second gas separate the gas condensation to be measured in pipe.
When the first subsystem carries out collection and confinement of gases step, controller makes the first sample guide pipeline, the first sample
Product air reservoir, the second sample air reservoir communicate with each other with gas negative pressure source, and make gas negative pressure source provide negative pressure,
Make the first sample guide the gas to be measured in pipeline, enter and fill up the first sample air reservoir and the storage of the second sample
Air drain.When the first subsystem carries out gas chromatography step, controller make first sample guide pipeline, first
The connection to each other of sample air reservoir, the second sample air reservoir and gas negative pressure source is interrupted；And make gas positive pressure
Source, the first sample air reservoir and the first gas chromatography sensing device communicate with each other, and make again gas positive pressure source provide
Malleation, makes the gas to be measured stored by the first sample air reservoir, enters the first gas chromatography sensing device and carries out
Analyzing and processing；Gas positive pressure source, the first gas is more made to separate pipe, the second sample air reservoir and the first gas phase layer
Analysis sensing device communicates with each other, and makes again gas positive pressure source provide malleation, makes stored by the second sample air reservoir
Gas to be measured, enters the first gas chromatography sensing device after by the first gas separation pipe and is analyzed processing；
Also make the first sample guide pipeline to communicate with each other with gas negative pressure source, make again gas negative pressure source provide negative pressure, make
First sample guides the gas to be measured in pipeline to be discharged outside to.
When the second subsystem carries out collection and confinement of gases step, controller makes the second sample guide pipeline, the 3rd sample
Product air reservoir, the 4th sample air reservoir communicate with each other with gas negative pressure source, and make gas negative pressure source provide negative pressure,
Make the second sample guide the gas to be measured in pipeline, enter and fill up the 3rd sample air reservoir and the storage of the 4th sample
Air drain.When the second subsystem carries out gas chromatography step, controller make second sample guide pipeline, the 3rd
The connection to each other of sample air reservoir, the 4th sample air reservoir and gas negative pressure source is interrupted；And make gas positive pressure
Source, the 3rd sample air reservoir and the second gas chromatography sensing device communicate with each other, and make again gas positive pressure source provide
Malleation, makes the gas to be measured stored by the 3rd sample air reservoir, enters the second gas chromatography sensing device and carries out
Analyzing and processing；Gas positive pressure source, the second gas is more made to separate pipe, the 4th sample air reservoir and the second gas phase layer
Analysis sensing device communicates with each other, and makes again gas positive pressure source provide malleation, makes stored by the 4th sample air reservoir
Gas to be measured, enters the second gas chromatography sensing device after by the second gas separation pipe and is analyzed processing；
Also make the second sample guide pipeline to communicate with each other with gas negative pressure source, make again gas negative pressure source provide negative pressure, make
Second sample guides the gas to be measured in pipeline to be discharged outside to.
Further, described first subsystem also includes the first switching valve and the second switching valve, is located at the first sample
Product guide pipeline, when carrying out collection and confinement of gases step, fill out at the first sample air reservoir and the second sample air reservoir
After full gas to be measured, controller makes the first switching valve interrupt the first sample guiding tube pass and leads gas to be measured flowing,
And make the second switching valve interrupt the first sample guiding pipeline and the connection in gas negative pressure source, also make the first switching valve
The first sample is allowed to guide the two ends of pipeline to open in an atmosphere respectively with the second switching valve, so that the first sample storage
The air pressure essence of the gas to be measured of air drain and the second sample air reservoir meets atmospheric pressure.
Further, affiliated second subsystem also includes the 3rd switching valve and the 4th switching valve, is located at the second sample
Product guide pipeline, when carrying out collection and confinement of gases step, fill out at the 3rd sample air reservoir and the 4th sample air reservoir
After full gas to be measured, controller makes the 3rd switching valve interrupt the second sample guiding tube pass and leads gas to be measured flowing,
And make the 4th switching valve interrupt the connection of the second sample guiding pipeline and gas negative pressure source, also make the 3rd switching valve
The second sample is made to guide the two ends of pipeline to open in an atmosphere respectively with the 4th switching valve, so that the 3rd sample storage
The air pressure essence of the gas to be measured of air drain and the 4th sample air reservoir meets atmospheric pressure.
Further, baking oven also has the first attention device；When heater continues one section to the inner space of baking oven
After the heating of time, if the temperature of inner space has not been able to arrive predetermined temperature always, and the chamber door of baking oven is non-
Be positioned at the position of normal switching-off, then controller makes the first attention device send warning, reminds the position of baking oven chamber door
Abnormal；If the temperature of inner space has not been able to arrive predetermined temperature always, and the chamber door of baking oven is positioned at the most the normally off
The position closed, then controller makes described first attention device send warning, and the casing reminding heater or baking oven is different
Often.If the temperature of inner space has not been able to arrive predetermined temperature always, controller interrupts the first sample and guides
Pipeline receives the gas to be measured of the first measuring point in gaseous environment, and interrupts the second sample guiding pipeline reception gas
The gas to be measured of the second measuring point in body environment, and make gas negative pressure source provide negative pressure, the first sample is guided
Pipeline, the first sample air reservoir, the second sample air reservoir, the second sample guide pipeline, the 3rd sample gas storage
Gas to be measured in groove and the 4th sample air reservoir is discharged outside to.
Further, described baking oven includes two heaters, oven interior space add heat utilization two heating
The one of which of device is reached, and when the heater exception of one of which, internal volume taken over by another heater
Heating, enables the temperature of inner space to arrive predetermined temperature.
Further, the first gas chromatography sensing device or the second gas chromatography sensing device are flame ion gas
Chromatography sensing device mutually, and there is flame generator, lighter and the second attention device, when flame generator is held
When continuous a period of time cannot produce normal flame, controller makes lighter light a fire flame generator；Work as igniting
When the igniting of device still cannot produce normal flame beyond a pre-determined number and flame generator, make the second attention device
Send warning, remind the first gas chromatography sensing device or the second gas chromatography sensing device abnormal.
Further, multiple independent volatile organic matter measuring subsystem that has of the present invention measures system also
Including gas processer, will make from the gas that the first subsystem and the second subsystem are discharged outside to process
It meets gas discharge standard；And the gas after optionally processing, it is transmitted to the first sample guiding tube
Road or the second sample guide pipeline, thus carry out the measurement of volatile organic matter, and judge after treatment
Whether gas meets gas discharge standard.
Further, multiple independent volatile organic matter measuring subsystem that has of the present invention measures system also
Including two effusion meters, to be respectively arranged in the first sample guiding pipeline and the second sample guiding pipeline, use
In measuring the flow of gas to be measured in the first sample guides pipeline and the second sample guiding pipeline respectively, thus divide
Do not judge that the first sample guides pipeline and the second sample to guide pipeline the most abnormal.Also include filter and cleaning
Valve, filter is arranged at the first sample and guides pipeline or the second sample to guide in pipeline, is used for filtering gas to be measured
Dust in body or aqueous vapor, when when being not in good state of filter, controller makes cleaning valve provide gas to filter
Stream, and make residual dust on the filter or aqueous vapor leave.
Compared to prior art, the present invention has multiple independent volatile organic matter amount measuring subsystem
Examining system, guides pipeline with multiple samples, can receive diverse location in gaseous environment the most respectively many
The sample gas of individual measuring point is using as gas to be measured, thus can accept in the same time in different pipelines
The sample gas of multiple measuring points is to measure, therefore, in the same time between comparable multiple measuring points
Sample gas measurement, and do not transmit in identical pipeline due to the sample gas between different measuring points,
Thus the problem that the sample gas between multiple measuring point does not haves cross staining.
Accompanying drawing explanation
Fig. 1 is that the volatile organic matter measurement system that the embodiment of the present invention provides carries out collection and confinement of gases step
Block chart；
Fig. 2 is that the volatile organic matter measurement system that the embodiment of the present invention provides carries out gas chromatography step
Block chart；
Fig. 3 is that the volatile organic matter measurement system that the embodiment of the present invention provides enters for the gas after processing
The block chart of row collection and confinement of gases step；
Fig. 4 is that the sample in the volatile organic matter measurement system that the embodiment of the present invention provides guides pipeline to increase
It is provided with the schematic diagram of filter and cleaning valve.
Detailed description of the invention
Herein below will be arranged in pairs or groups graphic, utilize the technology contents of the particular specific embodiment explanation present invention, ripe
The personnel knowing this technology can be understood other advantages and the merit of the present invention easily by the content disclosed by this specification
Effect.The present invention is possible with other different specific embodiments and is implemented or apply.Each in this specification
Details may be based on different viewpoints and application, under the spirit without departing substantially from the present invention, carry out various modification with
Change.Especially, in graphic, proportionate relationship and the position relatively of each assembly only have exemplary use, not
Represent the actual state that the present invention implements.
The volatile organic matter measurement system that the embodiment of the present invention provides has multiple independent measurement subsystem,
For the gas in gaseous environment is measured, include during operation the collection and confinement of gases step that sequentially carries out with
Gas chromatography step.Referring to Fig. 1 to Fig. 2, the volatile organic matter that the embodiment of the present invention provides measures
System 1 includes gas positive pressure source 11, gas negative pressure source 12, controller the 13, first subsystem 14, second
Subsystem 15 and baking oven 16.Wherein, the first subsystem 14 include first sample guide pipeline 141,
First sample air reservoir the 142, second sample air reservoir the 143, first gas chromatography sensing device 144 and the
One gas separation pipe 145；And the second subsystem 15 includes the second sample and guides pipeline the 151, the 3rd sample
Air reservoir the 152, the 4th sample air reservoir the 153, second gas chromatography sensing device 154 and the second gas divide
From pipe 155.
It should be noted that volatile organic matter measurement system 1 that the embodiment of the present invention provides is except having first
Beyond subsystem 14 and the second subsystem 15, the most visual measurement request sets up extra subsystem, namely
Say, the embodiment of the present invention provide volatile organic matter measurement system independence measure subsystem quantity non-with
Two are limited, and can measure the sample gas of measuring point more than more than two respectively in the same time.
First, second sample guides pipeline 141,151 can receive in gaseous environment the first of diverse location respectively,
The sample gas of the second measuring point is using as gas to be measured, and persistently guides and draw at first, second sample respectively
Rodding 141,151 flows.So, the volatile organic matter measurement system that the embodiment of the present invention provides
The sample gas of multiple measuring points can be measured by 1 in the same time, and the sample gas between multiple measuring point
Body transmits in different pipelines, without there is the problem of the sample gas cross staining between multiple measuring point,
And can thereby compare between multiple measuring point the sample gas measurement in the same time.Optionally, as
Embodiment shown in Fig. 4, first, second sample guides the sample reception end of pipeline 141,151 to arrange
Filter 183 and cleaning valve 184.Described filter 183 for filter first, second sample guide pipeline 141,
Dust in 151 sample gases received or aqueous vapor.When filter 183 accumulates too much dust or aqueous vapor
And when causing being not in good state, controller 13 can make cleaning valve 184 that filter 183 offer is washed away air-flow, and
Make to remain in the dust on filter 183 or aqueous vapor is left, to increase the service life of filter 183.Separately
Outward, the air-flow that washes away that cleaning valve 184 is provided may be heated process and heats up, and uses raising and removes filtration
Dust or the ability of aqueous vapor on device 183.
It addition, the volatile organic matter measurement system 1 that the embodiment of the present invention provides also can arrange effusion meter
148,158, effusion meter 148,158 is respectively arranged at first, second sample and guides in pipeline 141,151,
The flow of gas to be measured in pipeline 141,151 is guided for measuring first, second sample respectively, if flow
The flow value deviation expection of the gas to be measured that meter 148,158 is measured, then represent first, second measured
Sample guides pipeline 141,151 to have exception, and therefore, the setting of effusion meter 148,158 can be used for judging the
One, the second sample guides pipeline 141,151 the most abnormal, and contributes to getting rid of first, second sample in real time
Guide the exception of pipeline 141,151.
First gas separation pipe 145 is located at the first sample and is guided pipeline 141, and is positioned at the first gas chromatography sense
Survey between device 144 and the second sample air reservoir 143, for the gas to be measured at the second sample air reservoir 143
Body isolates the gaseous compound specified, and allows and gas to be measured isolates the gaseous compound specified pass through.
Second gas separation pipe 155 is located at the second sample and is guided pipeline 151, and is positioned at the second gas chromatography sensing dress
Put 154 and the 4th between sample air reservoir 153, in the gas to be measured of the 4th sample air reservoir 153
Isolate the gaseous compound specified, and allow and gas to be measured isolates the gaseous compound specified pass through.?
In one embodiment of the invention, first, second gas separation pipe 145,155 is for only allowing gas middle finger to be measured
The molecular sieve that fixed methane passes through, but be not limited.
As shown in Figure 1 to Figure 3, the scope of baking oven 16 casing is represented by dotted lines, in the first subsystem 14
First sample guides pipeline the 141, first sample air reservoir the 142, second sample air reservoir 143 and the first gas
The second sample separated in pipe 145, and the second subsystem 15 guides pipeline the 151, the 3rd sample air reservoir
152, the 4th sample air reservoir 153 separates pipe 155 and is all located at the inside sky of baking oven 16 casing with the second gas
In between.Baking oven 16 has heater and heats with the inner space to casing, makes inner space arrive one pre-
Fixed temperature, and avoid the first sample in inner space guide pipeline the 141, first sample air reservoir 142, the
Two sample air reservoir the 143, first gas separation pipe the 145, second samples guide the storage of pipeline the 151, the 3rd sample
Air drain 152, the 4th sample air reservoir 153 separate the gas condensation to be measured in pipe 155 with the second gas and make
Become residual or blocking, to improve first sample guiding pipeline the 141, first sample air reservoir the 142, second sample
Air reservoir the 143, first gas separation pipe the 145, second sample guiding pipeline the 151, the 3rd sample air reservoir 152,
4th sample air reservoir 153 separates the service life of pipe 155 with the second gas.
Furthermore, the casing of baking oven 16 is also optional arranges temperature sensor, position sensor and the first attention device.
Controller 13 can make the temperature of temperature sensor sensing housing interior volume, uses and judges housing interior volume
Whether temperature arrives predetermined temperature.Controller 13 also can order the position of the chamber door making position sensor sensing casing
Put, use the position judging whether the chamber door of casing is positioned at normal switching-off.
When after the heating that the inner space of casing is continued for some time by heater, if the temperature of housing interior volume
When degree has not been able to arrive predetermined temperature always, and position sensor senses the chamber door of casing and is not located at the most the normally off
The position closed, then the non-reason as expected of temperature representing housing interior volume is probably, and chamber door is the most the normally off
Closing and cause the heat of housing interior volume to escape in a large number, now, controller 13 can be ordered and be made the first attention device send out
Go out warning, remind the malposition of operator's casing chamber door.
When after the heating that the inner space of casing is continued for some time by heater, if the temperature of housing interior volume
When degree has not been able to arrive predetermined temperature always, and position sensor senses the chamber door of casing and is positioned at normal switching-off
Position, then the non-reason as expected of temperature representing housing interior volume is probably, and heater is abnormal and nothing
Method provides heat to housing interior volume, or casing causes heat to escape in a large number extremely, now, controls
Device 13 can make the first attention device send warning, reminds operator's heater or casing abnormal.
When after the heating that the inner space of casing is continued for some time by heater, if the temperature of housing interior volume
When degree has not been able to arrive predetermined temperature always, controller 13 interrupts the first sample and guides pipeline 141 to receive gas
The gas to be measured of the first measuring point in environment, and interrupt second sample guide pipeline 151 receive in gaseous environment
The gas to be measured of the second measuring point, then makes gas negative pressure source 12 provide negative pressure, and the first sample is guided pipeline
141, first sample air reservoir the 142, second sample air reservoir the 143, second sample guide pipeline 151, the
Three sample air reservoirs 152 are discharged outside to the gas to be measured in the 4th sample air reservoir 153, and avoid case
The first sample in body inner space guides pipeline the 141, first sample air reservoir the 142, second sample air reservoir
143, in the second sample guides pipeline the 151, the 3rd sample air reservoir 152 and the 4th sample air reservoir 153
Gas condensation to be measured and cause residual or blocking, with improve first sample guide pipeline the 141, first sample storage
Air drain the 142, second sample air reservoir the 143, second sample guides pipeline the 151, the 3rd sample air reservoir 152
Service life with the 4th sample air reservoir 153.
In one embodiment of this invention, baking oven 16 is optional arranges two heaters, in baking oven 16 casing
The one of which adding two heaters of heat utilization in space, portion is reached, when the heater exception of one of which,
The heating of the inner space to baking oven 16 casing taken over by another heater, makes the temperature of baking oven 16 housing interior volume
Degree arrives predetermined temperature.
When first subsystem of the present invention carries out collection and confinement of gases step, controller 13 can make the first sample guide
Pipeline the 141, first sample air reservoir the 142, second sample air reservoir 143 connects each other with gas negative pressure source 12
Logical.Then, make gas negative pressure source 12 provide negative pressure, make the first sample guide the gas to be measured in pipeline 141,
Enter and fill up the first sample air reservoir 142 and the second sample air reservoir 143, and complete the first subsystem and treat
Survey the collection step of gas.
It addition, when second subsystem of the present invention carries out collection and confinement of gases step, controller 13 can make the second sample
Product guide pipeline the 151, the 3rd sample air reservoir the 152, the 4th sample air reservoir 153 and gas negative pressure source 12
Communicate with each other.Then, make gas negative pressure source 12 provide negative pressure, make the second sample guide treating in pipeline 151
Survey gas, enter and fill up the 3rd sample air reservoir 152 and the 4th sample air reservoir 153, and complete second
The collection step of subsystem gas to be measured.
Embodiment as shown in Figures 1 and 2, the first sample of the first subsystem 14 guides pipeline 141 also to set
There is the first switching valve 146 and the second switching valve 147, when the first subsystem 14 carries out collection and confinement of gases step,
After the first sample air reservoir 142 and the second sample air reservoir 143 fill up gas to be measured, controller 13 makes
One switching valve 146 interrupts the first sample and guides pipeline 141 to guide gas to be measured to flow, and makes interruption the first sample
Product guide the connection of pipeline 141 and gas negative pressure source 12.Then, the first switching valve 146 and the second switching is made
Valve 147 allows the first sample guide the two ends of pipeline 141 to open in an atmosphere respectively, makes the first subsystem 14
When carrying out gas chromatography step, the first sample air reservoir 142 and the second sample air reservoir 143 can be to
One gas chromatography sensing device 144 provides air pressure essence to meet the gas to be measured of atmospheric pressure, so that gas to be measured
It is indefinite that the air pressure of body will not float.
It addition, the second sample of the second subsystem 15 guides pipeline 151 to be additionally provided with the 3rd switching valve 156 and the
Four switching valves 157, when the second subsystem 15 carries out collection and confinement of gases step, in the 3rd sample air reservoir 152
After filling up gas to be measured with the 4th sample air reservoir 153, controller 13 makes the 3rd switching valve 156 interrupt second
Sample guides pipeline 151 to guide gas to be measured to flow, and makes interruption the second sample guide pipeline 151 and gas
The connection of negative pressure source 12.Then, make the 3rd switching valve 156 switch valve 157 with the 4th and allow the second sample respectively
Guide pipeline 151 two ends open in an atmosphere, make the second subsystem 15 when carrying out gas chromatography step,
3rd sample air reservoir 152 and the 4th sample air reservoir 153 can be to the second gas chromatography sensing devices 154
Air pressure essence is provided to meet the gas to be measured of atmospheric pressure, indefinite with the pneumatic floating avoiding gas to be measured.
When first subsystem 14 of the present invention carries out gas chromatography step, controller 13 makes the first sample draw
Rodding the 141, first sample air reservoir the 142, second sample air reservoir 143 is with gas negative pressure source 12 each other
Between connection interrupt.Then, gas positive pressure source the 11, first sample air reservoir 142 and the first gas chromatography are made
Sensing device 144 communicates with each other, and then makes gas positive pressure source 11 provide malleation, makes the first sample air reservoir
Gas to be measured stored by 142, enters the first gas chromatography sensing device 144 and is analyzed processing, and obtain
The parameters such as the concentration of volatile organic matter of gaseous compound outside appointment are comprised in gas to be measured.
When the gas chromatography step of the first subsystem 14 is carried out, controller 13 can make gas positive pressure source 11,
First gas separation pipe the 145, second sample air reservoir 143 and the first gas chromatography sensing device 144 are each other
Connection, then makes gas positive pressure source 11 provide malleation, makes the gas to be measured stored by the second sample air reservoir 143
Body, enters the first gas chromatography sensing device 144 after by the first gas separation pipe 145 and is analyzed place
Reason, and obtain the parameters such as the concentration of the volatile organic matter of gaseous compound specified in gas to be measured.
It addition, when second subsystem 15 of the present invention carries out gas chromatography step, controller 13 makes second
Sample guides pipeline the 151, the 3rd sample air reservoir the 152, the 4th sample air reservoir 153 and gas negative pressure source
12 connections to each other are interrupted.Then, gas positive pressure source the 11, the 3rd sample air reservoir 152 and the second gas are made
Chromatography sensing device 154 communicates with each other mutually, then makes gas positive pressure source 11 provide malleation, makes the 3rd sample storage
Gas to be measured stored by air drain 152, enters the second gas chromatography sensing device 154 and is analyzed processing,
And obtain the parameters such as the concentration comprising the volatile organic matter of the gaseous compound outside appointment in gas to be measured.
In when carrying out gas chromatography step of the second subsystem 15, controller 13 more can make gas positive pressure source 11,
Second gas separation pipe the 151, the 4th sample air reservoir 153 and the second gas chromatography sensing device 154 are each other
Connection.Then, making gas positive pressure source 11 provide malleation, make stored by the 4th sample air reservoir 153 is to be measured
Gas, enters the second gas chromatography sensing device 154 after by the second gas separation pipe 155 and is analyzed
Process, and obtain the parameters such as the concentration of the volatile organic matter of gaseous compound specified in gas to be measured.
Further, controller 13 also can make first, second sample guide pipeline 141,151 and gas
Negative pressure source 12 communicates with each other.Then, make gas negative pressure source 12 provide negative pressure, first, second sample is drawn
Gas to be measured in rodding 141,151 is discharged outside to, and reduces gas to be measured to first, second sample
Guide the pollution of pipeline 141,151, and can increase by first, second sample and guide making of pipeline 141,151
Use the life-span.
In one embodiment of this invention, first, second gas chromatography sensing device 144,154 be flame from
Sub-gas chromatography sensing device, and there is flame generator, flame detecting device, lighter and the second attention device.
Flame detecting device is used for detecting whether flame generator produces normal flame, when flame generator continues one section
Between when cannot produce normal flame, controller 13 life makes lighter light a fire flame generator.When lighter
When igniting still cannot produce normal flame beyond a pre-determined number and flame generator, controller 13 life makes second
Attention device sends warning, reminds first, second gas chromatography sensing device 144,154 abnormal and contributes to event
Barrier is got rid of.
Furthermore, in embodiment as shown in Figure 3, the volatile organic matter measurement system of the present invention may select
Including gas processer 181 and gas exhaustion line 182.Gas processer 181 will be from for process
One, the gas that the second subsystem 14,15 is discharged outside to, removes gaseous compound unhelpful in gas,
Comply with general gas discharge standard.Gas exhaustion line 182 receives at via gas processer 181
Gas after reason.Optionally, controller 13 can make gas exhaustion line 182 and first, second sample
Guide pipeline 141,151 connection, the thus gas to gas exhaustion line 182, sequentially carry out above-mentioned gas
Body collects step and gas chromatography step, and measures volatile organic matter therein, and judges gas treatment
Whether the gas after device 181 processes meets general gas discharge standard, so it should also be appreciated that gas processer
The function of 181 is the most normal.
In sum, provided by the present invention have multiple independent volatile organic matter amount measuring subsystem
Examining system, for measuring the gas in gaseous environment, includes the gas sequentially carried out and receives during operation
Collection step and gas chromatography step, have multiple sample and guide pipeline, can receive in gaseous environment the most respectively
The sample gas of multiple measuring points of diverse location is using as gas to be measured, and so, the volatility of the present invention has
Machine material measurement system can accept the sample gas of multiple measuring point to enter in the same time in different pipelines
Row measures, therefore, at the sample gas measurement of same time between comparable multiple measuring points, and due to
The different sample gases between measuring point will not transmit in identical pipeline, thus does not haves multiple measurement
The problem of the sample gas cross staining between point.It addition, the volatile organic matter measurement system of the present invention can
There is provided high temperature operating environment, and can avoid gas condensation to be measured in the gas circuit of internal system, to increase system
The service life of internals.
The principle of above-described embodiment only illustrative present invention and effect, not for limiting the present invention.Appoint
What is familiar with the personage of technique all can be entered above-described embodiment under spirit and scope of the invention
Row is modified and changes.Therefore, the rights protection scope of the present invention, should be as listed by scope of the present invention patent.
[symbol description]
1 volatile organic matter measurement system
11 gas positive pressure sources
12 gas negative pressure sources
13 controllers
14 first subsystems
141 first samples guide pipeline
142 first sample air reservoirs
143 second sample air reservoirs
144 first gas chromatography sensing devices
145 first gases separate pipe
146 first switching valves
147 second switching valves
148 effusion meters
15 second subsystems
151 second samples guide pipeline
152 the 3rd sample air reservoirs
153 the 4th sample air reservoirs
154 second gas chromatography sensing devices
155 second gases separate pipe
156 the 3rd switching valves
157 the 4th switching valves
158 effusion meters
16 baking ovens
181 gas processers
182 gas exhaustion line
183 filters
184 cleaning valves
Claims (10)
1. there is the multiple independent volatile organic matter measurement system measuring subsystem, for gas
Gas in environment measures, and includes the collection and confinement of gases step sequentially carried out and walk with gas chromatography during operation
Suddenly, it is characterised in that including:
Gas positive pressure source；
Gas negative pressure source；
Controller；
First subsystem, including:
First sample guide pipeline, receive the sample gas of the first measuring point in described gaseous environment, using as
Gas to be measured also guides flowing；
First sample air reservoir；
Second sample air reservoir；
First gas chromatography sensing device；
First gas separates pipe, specifies for isolating in the gas to be measured of described second sample air reservoir
Gaseous compound；Wherein
When described first subsystem carries out collection and confinement of gases step, described controller makes described first sample guide
Pipeline, the first sample air reservoir, the second sample air reservoir communicate with each other with gas negative pressure source, and make described gas
Body negative pressure source provides negative pressure, makes described first sample guide the gas to be measured in pipeline, enters and fill up described
First sample air reservoir and described second sample air reservoir；
When described first subsystem carries out described gas chromatography step, described controller makes described first sample
The connection to each other of pipeline, the first sample air reservoir, the second sample air reservoir and gas negative pressure source is guided to interrupt；
And make described gas positive pressure source, the first sample air reservoir and the first gas chromatography sensing device communicate with each other, again
Make described gas positive pressure source provide malleation, make the gas to be measured stored by described first sample air reservoir, enter
Described first gas chromatography sensing device is analyzed processing；Described gas positive pressure source, the first gas is more made to divide
Communicate with each other from pipe, the second sample air reservoir and the first gas chromatography sensing device, make again described gas positive pressure
Source provides malleation, makes the gas to be measured stored by described second sample air reservoir, by described first gas
Enter described first gas chromatography sensing device after separating pipe to be analyzed processing；Described first sample is also made to draw
Rodding communicates with each other with gas negative pressure source, makes again described gas negative pressure source provide negative pressure, makes described first sample
Product guide the gas to be measured in pipeline to be discharged outside to；
Second subsystem, including:
Second sample guide pipeline, receive the sample gas of the second measuring point in described gaseous environment, using as
Gas to be measured also guides flowing；
3rd sample air reservoir；
4th sample air reservoir；
Second gas chromatography sensing device；
Second gas separates pipe, specifies for isolating in the gas to be measured of described 4th sample air reservoir
Gaseous compound；Wherein
When described second subsystem carries out collection and confinement of gases step, described controller makes described second sample guide
Pipeline, the 3rd sample air reservoir, the 4th sample air reservoir communicate with each other with gas negative pressure source, and make described gas
Body negative pressure source provides negative pressure, makes described second sample guide the gas to be measured in pipeline, enters and fill up described
3rd sample air reservoir and described 4th sample air reservoir；
When described second subsystem carries out described gas chromatography step, described controller makes described second sample
The connection to each other of pipeline, the 3rd sample air reservoir, the 4th sample air reservoir and gas negative pressure source is guided to interrupt；
And make described gas positive pressure source, the 3rd sample air reservoir and the second gas chromatography sensing device communicate with each other, again
Make described gas positive pressure source provide malleation, make the gas to be measured stored by described 3rd sample air reservoir, enter
Described second gas chromatography sensing device is analyzed processing；Described gas positive pressure source, the second gas is more made to divide
Communicate with each other from pipe, the 4th sample air reservoir and the second gas chromatography sensing device, make again described gas positive pressure
Source provides malleation, makes the gas to be measured stored by described 4th sample air reservoir, by described second gas
Enter described second gas chromatography sensing device after separating pipe to be analyzed processing；Described second sample is also made to draw
Rodding communicates with each other with gas negative pressure source, makes again described gas negative pressure source provide negative pressure, makes described second sample
Product guide the gas to be measured in pipeline to be discharged outside to；And
Baking oven, has inner space and heater, and described heater can heat described inner space, makes described
Inner space arrives a predetermined temperature, and avoid the described first Sample introduction pipeline in described inner space,
First sample air reservoir, the second sample air reservoir, the first gas separate pipe, the second Sample introduction pipeline, the
Three sample air reservoirs, the 4th sample air reservoir and the second gas separate the gas condensation to be measured in pipe.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 and measure system
System, it is characterised in that described first subsystem also includes the first switching valve and the second switching valve, is located at described
First sample guides pipeline, when carrying out described collection and confinement of gases step, in described first sample air reservoir and institute
Stating after the second sample air reservoir fills up gas to be measured, described controller makes described first switching valve interrupt described the
Gas to be measured flowing led by one sample guiding tube pass, and makes described second switching valve described first sample of interruption draw
Rodding and the connection in described gas negative pressure source, also make described first switching valve with described second switching valve respectively
Described first sample is allowed to guide the two ends of pipeline to open in an atmosphere, so that described first sample air reservoir and institute
The air pressure essence of the gas to be measured stating the second sample air reservoir meets atmospheric pressure.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 and measure system
System, it is characterised in that described second subsystem also includes the 3rd switching valve and the 4th switching valve, is located at described
Second sample guides pipeline, when carrying out described collection and confinement of gases step, in described 3rd sample air reservoir and institute
Stating after the 4th sample air reservoir fills up gas to be measured, described controller makes described 3rd switching valve interrupt described the
Gas to be measured flowing led by two sample guiding tube pass, and makes described 4th switching valve described second sample of interruption draw
Rodding and the connection in described gas negative pressure source, also make described 3rd switching valve with described 4th switching valve respectively
Described second sample is made to guide the two ends of pipeline to open in an atmosphere, so that described 3rd sample air reservoir and institute
The air pressure essence of the gas to be measured stating the 4th sample air reservoir meets atmospheric pressure.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 and measure system
System, it is characterised in that described baking oven also has the first attention device；When described heater is in described baking oven
After the heating that space, portion continues for some time, if the temperature of described inner space has not been able to arrive above-mentioned pre-always
Fixed temperature, and the chamber door of described baking oven is not located at the position of normal switching-off, the most described controller makes described first
Attention device sends warning, reminds the malposition of described baking oven chamber door；If the temperature of described inner space is always
Have not been able to arrive above-mentioned predetermined temperature, and the chamber door of described baking oven is positioned at the position of normal switching-off, the most described control
Device processed makes described first attention device send warning, and the casing reminding described heater or described baking oven is abnormal.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 4 and measure system
System, it is characterised in that if the temperature of described inner space has not been able to arrive above-mentioned predetermined temperature always, institute
State controller and interrupt the gas to be measured of the first measuring point in described first sample guiding pipeline reception gaseous environment,
And interrupt the gas to be measured of the second measuring point in described second sample guiding pipeline reception gaseous environment, and make institute
State gas negative pressure source and negative pressure is provided, described first sample is guided pipeline, the first sample air reservoir, the second sample
Product air reservoir, the second sample guide the gas to be measured in pipeline, the 3rd sample air reservoir and the 4th sample air reservoir
Body is discharged outside to.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 5 and measure system
System, it is characterised in that described baking oven includes two heaters, described oven interior space add heat utilization institute
The one of which stating two heaters is reached, and when the heater exception of one of which, another heater is taken over
Described inner space is heated, enables the temperature of described inner space to arrive above-mentioned predetermined temperature.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 and measure system
System, it is characterised in that described first gas chromatography sensing device or described second gas chromatography sensing device are
Flame ion gas chromatography sensing device, and there is flame generator, lighter and the second attention device, work as institute
Stating flame generator and continue for some time when cannot produce normal flame, described controller makes described lighter pair
Described flame generator is lighted a fire；When the igniting of described lighter is beyond a pre-determined number and described flame generator
When still cannot produce normal flame, make described second attention device send warning, remind described first gas chromatography
Sensing device or described second gas chromatography sensing device are abnormal.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 and measure system
System, it is characterised in that also include gas processer, will be from described first subsystem with described for process
The gas that second subsystem is discharged outside to complies with gas discharge standard；And after optionally processing
Gas, be transmitted to described first sample guide pipeline or described second sample guide pipeline, wave with this
The measurement of the property sent out organic substance, thus judge whether gas after treatment meets gas discharge standard.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 and measure system
System, it is characterised in that also include two effusion meters, is respectively arranged at described first sample and guides pipeline and institute
State the second sample and guide in pipeline, guide pipeline and described second sample for measuring described first sample respectively
The flow of gas to be measured in guiding pipeline, uses and judges that described first sample guides pipeline and described second respectively
Sample guides pipeline the most abnormal.
There is multiple independent volatile organic matter measuring subsystem the most as claimed in claim 1 measure
System, it is characterised in that also including filter and cleaning valve, described filter is arranged at described first sample
Pipeline or described second sample is guided to guide in pipeline, for filtering the dust in gas to be measured or aqueous vapor, when
When being not in good state of described filter, described controller makes described cleaning valve provide air-flow to described filter,
And make to remain in the dust on described filter or aqueous vapor is left.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104113997 | 2015-04-30 | ||
| TW104113997A TWI620925B (en) | 2015-04-30 | 2015-04-30 | Vocs measurement system with multiple independent measurement subsystem |
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| Publication Number | Publication Date |
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| CN106198825A true CN106198825A (en) | 2016-12-07 |
| CN106198825B CN106198825B (en) | 2018-10-16 |
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| CN109425514A (en) * | 2017-08-25 | 2019-03-05 | 赛默飞世尔（上海）仪器有限公司 | fluid sampling device |
| CN109425672A (en) * | 2017-08-25 | 2019-03-05 | 赛默飞世尔（上海）仪器有限公司 | Integrated volatile organic substance analyzer |
| CN109425712A (en) * | 2017-08-28 | 2019-03-05 | 赛默飞世尔（上海）仪器有限公司 | Volatile organic substance detection system |
| CN110687233A (en) * | 2019-08-30 | 2020-01-14 | 中国地质大学（武汉） | Organic matter group component analysis device with monitoring and early warning functions |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI657238B (en) * | 2017-09-08 | 2019-04-21 | 賽默飛世爾（上海）儀器有限公司 | VOCs ANALYTICAL INSTRUMENT |
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Also Published As
| Publication number | Publication date |
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| TWI620925B (en) | 2018-04-11 |
| CN106198825B (en) | 2018-10-16 |
| TW201638572A (en) | 2016-11-01 |
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