CN209589594U - A kind of device for formulating for hazardous gas quantitative detection - Google Patents
A kind of device for formulating for hazardous gas quantitative detection Download PDFInfo
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- CN209589594U CN209589594U CN201920293865.XU CN201920293865U CN209589594U CN 209589594 U CN209589594 U CN 209589594U CN 201920293865 U CN201920293865 U CN 201920293865U CN 209589594 U CN209589594 U CN 209589594U
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Abstract
The utility model discloses a kind of device for formulating for hazardous gas quantitative detection, including under test gas storage tank, three-way valve, balloon, glass valves, vacuum pumping pump and separation container；The three-way valve is used to connect the bleeder port and balloon or balloon and glass valves of under test gas storage tank；For making, vacuum pumping pump is connected to the glass valves with separation container or three-way valve is connected to separation container.The utility model clever structure, it is pumped through the on-off of three-way valve and glass valves control gas circuit, import hazardous gas in vacuum separation container under the smaller convergent force of balloon, whole process does not need to carry out manually to extract the risky operation such as gas, just can achieve the purpose that carry out quantitative sampling to hazardous gas, it is low in cost so as to carry out quantitative detection to hazardous gas, and sampling operation is simple and easy to do, it is quantitative accurate and reliable.
Description
Technical field
The utility model relates to a kind of device for formulating for hazardous gas quantitative detection.
Background technique
Gas is difficult accurately to be sampled since its boiling point is very low, therefore is not easy to be determined during routine testing
Amount detection.It is especially hypertoxic, the hazardous gases (such as tetrafluoroethene, hydrogen sulfide) such as perishable, during routine testing often
Need special equipment, expensive and be not easy to obtain, some can not even carry out.And use airbag method, due to need manually into
Row is had biggish risk, is also wasted very much to calibrating gas using the devices air suction samplings such as syringe, operation.
Utility model content
The purpose of the utility model is to provide one kind without carrying out the risky operation such as artificial extraction gas, just can reach to danger
Dangerous gas carries out the device for formulating for hazardous gas quantitative detection of quantitative sampling.
Realizing the technical solution of the utility model aim is: a kind of device for formulating for hazardous gas quantitative detection, packet
Include under test gas storage tank, three-way valve, balloon, glass valves, vacuum pumping pump and separation container；The three-way valve is for connecting
The bleeder port and balloon or balloon and glass valves of under test gas storage tank；The glass valves is for holding vacuum pumping pump and packing
Device connection or three-way valve are connected to separation container.
The tracheae that the under test gas storage tank is connected to three-way valve is equipped with pressure reducing valve.
The glass valves includes valve housing and spool；The valve housing is equipped with first port, second port and the
Three ports；The first port, second port and third port are connected to three-way valve, vacuum pumping pump and separation container respectively；
The spool is arranged in valve housing, and by rotary spool make first port be connected to third port or second port with
Third port connection.
It further include the first glass tube and the second glass tube；First glass tube passes through tracheae and three-way valve and glass respectively
The first port of the valve housing of glass valve is connected to；Second glass tube pass through respectively tracheae and valve housing second port and
Vacuum pumping pump connection.
The valve housing of the glass valves is cylindrical in shape；The valve core rotation is connected in the inner cavity of valve housing, and valve
The inner wall of the outer wall fitting valve housing of core；The first port, second port and third port are set to the side of valve housing
On wall, and it is connected to the inner cavity of valve housing；The first port and second port and third port are along valve housing axis
It is symmetrical arranged；Be equipped in parallel on the spool be respectively used to connection first port and the first through hole of third port be connected to second
Second through-hole of port and third port, and when first through hole connection first port is with third port, the second through-hole is not connected to
Second port and third port, the second through-hole connection second port and first through hole when third port are not connected to first port and the
Three ports.
The axis of the first through hole of the spool of the glass valves and the second through-hole is in same plane, and and spool
Axis is formed with 45 degree of angle.
The glass valves and separation container are equipped with multiple, and correspond.
The one end of the spool of the glass valves outside valve housing is equipped with handle.
The separation container is ml headspace bottle；The gas that the third port of the valve housing of the glass valves is connected to separation container
It manages and is communicated with the injector head with syringe needle on one end far from glass valves；The injector head with syringe needle is divided for being inserted into
In packaging container.
The configuration method of the above-mentioned device for formulating for hazardous gas quantitative detection, comprising the following steps:
S1, make under test gas storage tank and balloon by operating three-way valve, slowly deposited under test gas by pressure reducing valve
Hazardous gas in storage tank imports in balloon, closes pressure reducing valve when balloon reaches 1-3L volume；
S2, it is connected to balloon with the first glass tube by operating three-way valve；
S3, the liquid that certain volume is added into separation container, by the mating dedicated disposable silicon glue bottle plug of separation container
Separation container is sealed, then the seal closure of the injector head with syringe needle is removed in insertion separation container；
S4, the second glass tube is connected to vacuum pumping pump by operating glass valves, and opens vacuum pump and vacuumize, will dispense
Air in the gas circuit of container and separation container connection vacuum pumping pump is taken away, makes in separation container in vacuum state；
S5, by operate glass valves be connected to the first glass tube with separation container, by operation three-way valve make balloon and
The connection of first glass tube, balloon natural shrinking import hazardous gas in separation container；
S6, after repeating S4 and S5 to balloon diminution, separation container is removed, the seal closure with needle applicator head is worn over
On band needle applicator head.
Using above-mentioned technical proposal, the utility model has below the utility model has the advantages that (1) the utility model structure is skilful
It is wonderful, the on-off of gas circuit is controlled by three-way valve and glass valves, and hazardous gas is made to import vacuum under the smaller convergent force of balloon
In separation container, whole process does not need to carry out manually to extract the risky operation such as gas, just can reach and carry out quantitative to hazardous gas
The purpose of sample, it is low in cost so as to carry out quantitative detection to hazardous gas, and sampling operation is simple and easy to do, it is quantitative accurate
Reliably.
(2) tracheae that the under test gas storage tank of the utility model is connected to three-way valve is equipped with pressure reducing valve, gas to be measured
Hazardous gas is imported gas circuit by pressure reducing valve by body storage tank, more stable and reliable.
(3) glass valves of the utility model includes valve housing and spool, operates extremely convenient, makes the by rotary spool
Single port is connected to third port or second port is connected to third port.
(4) the utility model further includes the first glass tube and the second glass tube, passes through the first glass tube and the second glass tube
It can be realized and carry out configuration gas to multiple separation containers respectively by multiple glass valves.
(5) separation container of the utility model is ml headspace bottle, the third port and separation container of the valve housing of glass valves
The tracheae of connection is far from the injector head with syringe needle is communicated on one end of glass valves, and the injector head with syringe needle is for inserting
Enter in separation container, since the volume size of separation container has fixed specification, the capacity of the gas of configuration being capable of essence
It certainly measures, the gas capacity if desired configured is smaller, can add the liquid of determined volume into separation container in advance to reduce point
Dress gas volume carries out gas configuration again.
Detailed description of the invention
In order to make the content of the utility model be easier to be clearly understood, below according to specific embodiment and combine attached
Figure, is described in further detail the utility model, wherein
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is that the glass valves of the utility model is connected to the structural schematic diagram of first port and third port.
Fig. 3 is that the glass valves of the utility model is connected to the structural schematic diagram of second port and third port.
Fig. 4 is the typical chromatogram of 0.045mg/kg tetrafluoroethene in food simulants.
Label in attached drawing are as follows:
Under test gas storage tank 1, three-way valve 2, balloon 3, glass valves 4, valve housing 4-1, first port 4-1-1,
Two-port netwerk 4-1-2, it third port 4-1-3, spool 4-2, first through hole 4-2-1, the second through-hole 4-2-2, handle 4-2-3, takes out very
Sky pump 5, separation container 6, pressure reducing valve 7, the first glass tube 8, the second glass tube 9, the injector head 10 with syringe needle.
Specific embodiment
(embodiment 1)
See Fig. 1 to Fig. 3, the device for formulating for hazardous gas quantitative detection of the present embodiment, including under test gas storage
Tank 1, three-way valve 2, balloon 3, glass valves 4, vacuum pumping pump 5 and separation container 6.
Three-way valve 2 is used to connect the bleeder port and balloon 3 or balloon 3 and glass valves 4 of under test gas storage tank 1.Glass
For making, vacuum pumping pump 5 is connected to glass valve 4 with separation container 6 or three-way valve 2 is connected to separation container 6.Under test gas storage tank 1
The tracheae being connected to three-way valve 2 is equipped with pressure reducing valve 7.Three-way valve 2 is using current existing triple valve.
Glass valves 4 includes valve housing 4-1 and spool 4-2.Valve housing 4-1 is equipped with first port 4-1-1, second end
Mouth 4-1-2 and third port 4-1-3.First port 4-1-1, second port 4-1-2 and third port 4-1-3 respectively with triple valve
Door 2, vacuum pumping pump 5 are connected to separation container 6.Spool 4-2 setting makes in valve housing 4-1, and through rotary spool 4-2
First port 4-1-1 is connected to third port 4-1-3 or second port 4-1-2 is connected to third port 4-1-3.
The present embodiment further includes the first glass tube 8 and the second glass tube 9.First glass tube 8 passes through tracheae and threeway respectively
Valve 2 is connected to the first port 4-1-1 of the valve housing 4-1 of glass valves 4.Second glass tube 9 passes through tracheae and valve respectively
The second port 4-1-2 of shell 4-1 is connected to vacuum pumping pump 5.
The valve housing 4-1 of glass valves 4 is cylindrical in shape.Spool 4-2 is rotatably connected in the inner cavity of valve housing 4-1, and
The inner wall of the outer wall fitting valve housing 4-1 of spool 4-2.First port 4-1-1, second port 4-1-2 and third port 4-1-3
On the side wall of valve housing 4-1, and it is connected to the inner cavity of valve housing 4-1.First port 4-1-1 and second port
4-1-2 and third port 4-1-3 is arranged along valve housing 4-1 axisymmetrical.Parallel be equipped with is respectively used to connection the on spool 4-2
Single port 4-1-1 and the first through hole 4-2-1 of third port 4-1-3 be connected to second port 4-1-2's and third port 4-1-3
Second through-hole 4-2-2, and the second through-hole 4- when first through hole 4-2-1 is connected to first port 4-1-1 and third port 4-1-3
2-2 is not connected to second port 4-1-2 and third port 4-1-3, the second through-hole 4-2-2 are connected to second port 4-1-2 and third end
First through hole 4-2-1 is not connected to first port 4-1-1 and third port 4-1-3 when mouth 4-1-3.
The axis of the first through hole 4-2-1 of the spool 4-2 of glass valves 4 and the second through-hole 4-2-2 are in same plane, and
And 45 degree of angle is formed with spool 4-2 axis.
Glass valves 4 and separation container 6 are equipped with multiple, and correspond.
The one end of the spool 4-2 of glass valves 4 outside valve housing 4-1 is equipped with handle 4-2-3.
Separation container 6 is ml headspace bottle.The third port 4-1-3 of the valve housing 4-1 of glass valves 4 is connected to separation container 6
The one end of tracheae far from glass valves 4 on be communicated with the injector head 10 with syringe needle.Injector head 10 with syringe needle is used for
It is inserted into separation container 6.
The detection configuration of tetrafluoroethene the amount of migration in food contact material, tetrafluoroethene are the resistance to height such as production polytetrafluoroethylene (PTFE)
The raw material of warm plastic products causes the harm of human body, therefore, food however, part unconverted monomer can move in food
Contact material relevant laws and regulations GB9685 provides that the migration limitation of tetrafluoroethene is 0.05mg/kg in food contact material.
Detection process is as follows, and 10mL food simulants are added in separation container 6, can by sampling according to above-mentioned apparatus
It will be 10 × 10 under test gas storage tank 1-6mol/mol(nTetrafluoroethene/nNitrogen) the displacement of tetrafluoroethene calibrating gas to separation container 6
In, separation container 6 is subjected to headspace gas chromatography-Mass Spectrometer Method after being replaced.See Fig. 4, the inspection of tetrafluoroethene in analogies
Rising limit is 0.045mg/kg.It is wanted to meet the limitation of tetrafluoroethene 0.05mg/kg in food contact material as defined in GB 9685
It asks.
The configuration method of the device for formulating for hazardous gas quantitative detection of the present embodiment, comprising the following steps:
S1, make under test gas storage tank 1 and balloon 3 by operating three-way valve 2, by pressure reducing valve 7 slowly by gas to be measured
Hazardous gas in body storage tank 1 imports in balloon 3, and pressure reducing valve 7 is closed when balloon reaches 1-3L volume.
S2, it is connected to balloon 3 with the first glass tube 8 by operating three-way valve 2.
S3, the liquid that certain volume is added into separation container 6, can be water, silicone oil or other not anti-with hazardous gas
The mating dedicated disposable silicon glue bottle plug of separation container 6 is sealed separation container 6 by the liquid answered or dissolved, then will be with syringe needle
The seal closure of injector head 10 is removed in insertion separation container 6.
S4, the second glass tube 9 is connected to vacuum pumping pump 5 by operating glass valves 4, and open vacuum pump 5 and vacuumize, it will
The air that separation container 6 and separation container 6 are connected in the gas circuit of vacuum pumping pump 5 is taken away, makes in separation container 6 in vacuum shape
State.
S5, the first glass tube 8 is connected to separation container 6 by operating glass valves 4, make gas by operating three-way valve 2
Ball 3 is connected to the first glass tube 8, and 3 natural shrinking of balloon imports hazardous gas in separation container 6.
S6, after repeating S4 and S5 to the diminution of balloon 3, separation container 6 is removed, by the seal closure with needle applicator head 9
It is worn on band needle applicator head 9.
Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects
Step is described in detail, it should be understood that being not limited to this foregoing is merely specific embodiment of the utility model
Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing being within the protection scope of the utility model.
Claims (9)
1. a kind of device for formulating for hazardous gas quantitative detection, it is characterised in that: including under test gas storage tank (1), three
Port valve door (2), balloon (3), glass valves (4), vacuum pumping pump (5) and separation container (6)；The three-way valve (2) is for connecting
The bleeder port and balloon (3) or balloon (3) and glass valves (4) of under test gas storage tank (1)；The glass valves (4) is for making
Vacuum pumping pump (5) is connected to separation container (6) or three-way valve (2) is connected to separation container (6).
2. a kind of device for formulating for hazardous gas quantitative detection according to claim 1, it is characterised in that: it is described to
It surveys the tracheae that gas storage tanks (1) is connected to three-way valve (2) and is equipped with pressure reducing valve (7).
3. a kind of device for formulating for hazardous gas quantitative detection according to claim 1, it is characterised in that: the glass
Glass valve (4) includes valve housing (4-1) and spool (4-2)；The valve housing (4-1) is equipped with first port (4-1-1), the
Two-port netwerk (4-1-2) and third port (4-1-3)；The first port (4-1-1), second port (4-1-2) and third port
(4-1-3) is connected to three-way valve (2), vacuum pumping pump (5) and separation container (6) respectively；The spool (4-2) is arranged in valve
In shell (4-1), and it is connected to first port (4-1-1) with third port (4-1-3) or second by rotary spool (4-2)
Port (4-1-2) is connected to third port (4-1-3).
4. a kind of device for formulating for hazardous gas quantitative detection according to claim 3, it is characterised in that: further include
First glass tube (8) and the second glass tube (9)；First glass tube (8) passes through tracheae and three-way valve (2) and glass respectively
The first port (4-1-1) of the valve housing (4-1) of valve (4) is connected to；Second glass tube (9) passes through tracheae and valve respectively
The second port (4-1-2) of shell (4-1) is connected to vacuum pumping pump (5).
5. a kind of device for formulating for hazardous gas quantitative detection according to claim 3, it is characterised in that: the glass
The valve housing (4-1) of glass valve (4) is cylindrical in shape；The spool (4-2) is rotatably connected in the inner cavity of valve housing (4-1), and
And the inner wall of outer wall fitting valve housing (4-1) of spool (4-2)；The first port (4-1-1), second port (4-1-2)
With third port (4-1-3) on the side wall of valve housing (4-1), and it is connected to the inner cavity of valve housing (4-1)；Institute
It states first port (4-1-1) and second port (4-1-2) and is set with third port (4-1-3) along valve housing (4-1) axisymmetrical
It sets；It is equipped in parallel on the spool (4-2) and is respectively used to the first of connection first port (4-1-1) and third port (4-1-3)
Through-hole (4-2-1) and the second through-hole (4-2-2) for being connected to second port (4-1-2) and third port (4-1-3), and when first
Through-hole (4-2-1) is connected to first port (4-1-1) and is not connected to second end with the second through-hole (4-2-2) when third port (4-1-3)
Mouth (4-1-2) and third port (4-1-3), the second through-hole (4-2-2) are connected to second port (4-1-2) and third port (4-1-
3) first through hole (4-2-1) is not connected to first port (4-1-1) and third port (4-1-3) when.
6. a kind of device for formulating for hazardous gas quantitative detection according to claim 5, it is characterised in that: the glass
The first through hole (4-2-1) of the spool (4-2) of glass valve (4) and the axis of the second through-hole (4-2-2) are in same plane, and
45 degree of angle is formed with spool (4-2) axis.
7. a kind of device for formulating for hazardous gas quantitative detection according to claim 4, it is characterised in that: the glass
Glass valve (4) and separation container (6) are equipped with multiple, and correspond.
8. a kind of device for formulating for hazardous gas quantitative detection according to claim 3, it is characterised in that: the glass
The spool (4-2) of glass valve (4) is equipped with handle (4-2-3) in the one end of valve housing (4-1) outside.
9. a kind of device for formulating for hazardous gas quantitative detection according to claim 1, it is characterised in that: described point
Packaging container (6) is ml headspace bottle；The third port (4-1-3) of the valve housing (4-1) of the glass valves (4) and separation container (6)
The tracheae of connection is communicated with the injector head (10) with syringe needle on one end far from glass valves (4)；The injection with syringe needle
Device head (10) is for being inserted into separation container (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293865.XU CN209589594U (en) | 2019-03-07 | 2019-03-07 | A kind of device for formulating for hazardous gas quantitative detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920293865.XU CN209589594U (en) | 2019-03-07 | 2019-03-07 | A kind of device for formulating for hazardous gas quantitative detection |
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| Publication Number | Publication Date |
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| CN209589594U true CN209589594U (en) | 2019-11-05 |
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| CN201920293865.XU Active CN209589594U (en) | 2019-03-07 | 2019-03-07 | A kind of device for formulating for hazardous gas quantitative detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738240A (en) * | 2019-03-07 | 2019-05-10 | 常州进出口工业及消费品安全检测中心 | A kind of device for formulating and its configuration method for hazardous gas quantitative detection |
-
2019
- 2019-03-07 CN CN201920293865.XU patent/CN209589594U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738240A (en) * | 2019-03-07 | 2019-05-10 | 常州进出口工业及消费品安全检测中心 | A kind of device for formulating and its configuration method for hazardous gas quantitative detection |
| CN109738240B (en) * | 2019-03-07 | 2024-05-03 | 常州工业及消费品检验有限公司 | Preparation device for quantitative detection of dangerous gas and preparation method thereof |
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Effective date of registration: 20210428 Address after: 213017 No. 47 Tsing Yang North Road, Tianning District, Jiangsu, Changzhou Patentee after: Changzhou Industrial and consumer goods inspection Co.,Ltd. Address before: 213000 No. 47 Tsing Yang North Road, Tianning District, Jiangsu, Changzhou Patentee before: CHANGZHOU SAFETY TESTING CENTER FOR ENTRY-EXIT INDUSTRY AND CONSUMABLE PRODUCTS |