CN109647235A - A kind of dilution device based on gas mixing dilution mode - Google Patents
A kind of dilution device based on gas mixing dilution mode Download PDFInfo
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- CN109647235A CN109647235A CN201811644760.0A CN201811644760A CN109647235A CN 109647235 A CN109647235 A CN 109647235A CN 201811644760 A CN201811644760 A CN 201811644760A CN 109647235 A CN109647235 A CN 109647235A
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- Prior art keywords
- dilution
- gas
- branch pipe
- air flow
- flow amount
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/10—Mixing gases with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
- B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
Abstract
The present invention relates to a kind of dilution devices based on gas mixing dilution mode, including mixer, the first dilution air flow amount controller, the second dilution air flow amount controller, third dilution air flow amount controller, Standard Gases flow controller；Dilution chamber is provided in the mixer, air inlet and gas outlet are provided on the mixer, the air inlet is connected with the dilution chamber with gas outlet, the Standard Gases flow controller is connect by tee tube with the air inlet on the mixer with the first dilution air flow amount controller, the second dilution air flow amount controller is connected by the first output channel with the dilution chamber, and the third dilution air flow amount controller is connected by the second output channel with the dilution chamber.The present apparatus increases Multi-stage dilution gas by the first dilution air flow amount controller, the second dilution air flow amount controller, third dilution air flow amount controller and is mixed with Standard Gases, increase the disturbance in gas flow, improves the mixability of calibrating gas and carrier gas molecule.
Description
Technical field
The present invention relates to environment monitoring fields, and in particular to a kind of dilution device based on gas mixing dilution mode.
Background technique
The calibrating gas with middle various concentration is often used to on-line monitoring equipment progress calibration test in environment monitoring field.
In real work a kind of common calibrating gas using high concentration based on the dilution device by way of gas mixing dilution come real
The output of existing various concentration standard gas.The principle of dilution device based on gas mixing dilution mode is using the pure of high flow capacity
Net carrier gas, a low discharge calibrating gas export after mixing, control the ratio of high and low flow, and then reach different
The output of concentration standard gas.Such as the light concentration gas of 1000 times of dilution is exported, setting standard gas exports 5ml, and setting carrier gas is defeated
4995ml out, then the extension rate of output gas is (4995+5)/5=1000 times.Assuming that standard gas concentration is 5ppm, then gas is exported
Bulk concentration is 0.005ppm.Two kinds of gases enter static mixer after converging by threeway and mix.
It is to include multi-disc to the cavity of slotting sheet metal in static mixer structure.Its working mechanism is to utilize to be fixed in pipe
Mixed cell (sheet metal of inhibition) change flow regime of the gas in pipe, well divided between gas with various with reaching
It dissipates and well-mixed purpose.However the existing dilution device based on gas mixing dilution mode is in so high extension rate
Under, the standard gas that may lead to the problem of small flow is non-uniform in the mixing of big flow carrier gas.Cause to export standard gas density unevenness
It is even, and then lead to calibration measurement error.
Summary of the invention
It is an object of the invention to improve the deficiency in the presence of the prior art, provide a kind of based on gas mixing dilution side
The dilution device of formula.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of dilution device based on gas mixing dilution mode, including mixer, the first dilution air flow amount controller, the
Two dilution air flow amount controllers, third dilution air flow amount controller, Standard Gases flow controller；It is provided in the mixer dilute
Release chamber, be provided with air inlet and gas outlet on the mixer, the air inlet and gas outlet with the dilution chamber phase
Connection, the Standard Gases flow controller and the first dilution air flow amount controller pass through the air inlet on tee tube and the mixer
Mouth connection, the second dilution air flow amount controller are connected by the first output channel with the dilution chamber, the third
Dilution air flow amount controller is connected by the second output channel with the dilution chamber.
Increased by the first dilution air flow amount controller, the second dilution air flow amount controller, third dilution air flow amount controller
It adds a grade carrier gas to be mixed with Standard Gases, increases the disturbance in gas flow, improve calibrating gas and carrier gas point
The mixing uniformity of son.
In further embodiment, several first branch pipes, first branch pipe are provided on first output channel
Head end be inserted into the dilution chamber, the tail end of first branch pipe is connected with first output channel；Described second is defeated
Several second branch pipes are provided on pipeline out, the head end of second branch pipe is inserted into the dilution chamber, second branch pipe
Tail end be connected with second output channel, the head end of first branch pipe and the head end of the second branch pipe are provided with spray
Mouth.By being provided with several first branch pipes on the first output channel, be provided on second output channel several second
Branch pipe, each branch pipe spray diluent gas, increase the disturbance in gas flow, improve calibrating gas and carrier gas molecule
Mixing uniformity.
In further embodiment, several upper spacers and several lower clapboards are provided in the dilution chamber room, it is described
Upper spacer be set to it is described dilution chamber upper plate, the lower clapboard be set to it is described dilution chamber lower plate, it is described on
In along air inlet to gas outlet direction, successively cross-circulation is arranged in the dilution chamber room, formation mixing is logical for partition and lower clapboard
Road；Gas conveying direction is opposite with the gas flow direction that the nozzle exports in the hybrid channel.By diluent gas with
Calibrating gas conveying direction further increases the disturbance in gas flow on the contrary to generate convection current, improves calibrating gas
With the mixing uniformity of carrier gas molecule.
In further embodiment, the nozzle of the nozzle of first branch pipe and the second branch pipe is towards opposed.In difference
Direction and calibrating gas formed convection current, improve calibrating gas and carrier gas molecule mixing uniformity.
In further embodiment, first branch pipe is separated in each upper spacer and the lateral clearance for the lower clapboard that is connected
Or second branch pipe, first branch pipe and the second branch pipe are successively reported to the leadship after accomplishing a task cycle arrangement along air inlet to gas outlet.
In further embodiment, the first dilution air flow amount controller, the second dilution air flow amount controller, third are dilute
Flow-rate ratio in outgassing flow controller is 2:1:1.Reduce the response time.
In further embodiment, the outer wall of first branch pipe and the outer wall of the second branch pipe are provided with several outlets
Hole.When mixed gas continues flowing, mixing contact with stomata output gas and disturbs and achievees the purpose that fine dispersion.
In further embodiment, first output channel and the second output channel are inserted into the mixer, and institute
It states the first output channel and the second output channel passes through fluorubber material and the mixer outer wall is tightly connected.Improve dress
The air-tightness set.
Compared with prior art, the invention has the following advantages:
1, the present apparatus passes through the first dilution air flow amount controller, the second dilution air flow amount controller, third carrier gas flow
Controller increase Multi-stage dilution gas mixed with Standard Gases, increase gas flow in disturbance, improve calibrating gas and
The mixing uniformity of carrier gas molecule.
2, it by being provided with several first branch pipes on the first output channel, is provided on second output channel several
A second branch pipe, each branch pipe spray diluent gas, increase the disturbance in gas flow, improve calibrating gas and dilution
The mixing uniformity of gas molecule.
3, opposite with calibrating gas conveying direction to generate convection current by diluent gas, it further increases gas and flows over
Disturbance in journey improves the mixing uniformity of calibrating gas and carrier gas molecule.
4, stomata is provided on each branch pipe of the present apparatus to connect when mixed gas continues flowing with stomata output gas
Touching, which is mixed and disturbed, achievees the purpose that fine dispersion.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of structural representation of dilution device that mode is diluted based on gas mixing provided in an embodiment of the present invention
Figure；
Fig. 2 is nozzle in a kind of branch pipe of dilution device for diluting mode based on gas mixing provided in an embodiment of the present invention
With the schematic diagram of stomata；
Description of symbols in figure
Mixer 1, the first dilution air flow amount controller 2, the second dilution air flow amount controller 3, third carrier gas flow control
Device 4 processed, Standard Gases flow controller 5, dilution chamber 6, air inlet 7, gas outlet 8, tee tube 9, the first output channel 10, first
Branch pipe 11, the second output channel 12, the second branch pipe 13, nozzle 14, upper spacer 15, lower clapboard 16, hybrid channel 17, stomata 18.
Specific embodiment
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Fig. 1 or 2 is please referred to, the present embodiment schematically discloses a kind of dilution dress based on gas mixing dilution mode
It sets, including mixer 1, the first dilution air flow amount controller 2, the second dilution air flow amount controller 3, third carrier gas flow control
Device 4, Standard Gases flow controller 5；It is provided with dilution chamber 6 in the mixer 1, is provided with air inlet 7 on the mixer 1
With gas outlet 8, the air inlet 7 is connected with the dilution chamber 6 with gas outlet 8, the Standard Gases flow controller 5 with
First carrier gas flow, 2 controller is connect by tee tube 9 with the air inlet 7 on the mixer 1, second dilution air flow
It measures 3 controllers to be connected by the first output channel 10 with the dilution chamber 6, the third dilution air flow amount controller 4 is logical
The second output channel 12 is crossed to be connected with the dilution chamber 6.
In the present solution, the first dilution air flow amount controller 2, the second dilution air flow amount controller 3, third carrier gas flow
Controller 4 receives diluent gas and controls diluent gas and conveys to mixer 1, and standard dilution air-flow amount controller 5 receives standard
Gas, and control calibrating gas and conveyed to mixer 1, at first, the Standard Gases flow controller 5 and the first carrier gas flow
Controller 2 is connect by tee tube 9 with the air inlet on the mixer 1, the carrier gas in the first dilution air flow amount controller 2
Body is mixed with the calibrating gas in Standard Gases flow controller 5, is delivered to and is diluted chamber 6, in the first dilution air flow amount controller 2
Diluent gas and Standard Gases flow controller 5 in calibrating gas dilute chamber continues to mix during, second dilution
Diluent gas conveying dilution chamber 6 in air-flow amount controller 3 and the third dilution air flow amount controller 4 is more by increasing
Grade carrier gas is mixed with Standard Gases, increases the disturbance in gas flow, improves calibrating gas and carrier gas molecule
Mixing uniformity.It is mixed by the multistage contact to flow disturbance, large area repeatedly, it is dilute to be finally reached uniformly mixed static state
Release effect.
In further embodiment, it is provided with several first branch pipes 11 on first output channel 10, described first
The head end of branch pipe 11 is inserted into the dilution chamber 6, and the tail end of first branch pipe 11 is connected with first output channel 10；
Several second branch pipes 13 are provided on second output channel 12, the head end of second branch pipe 13 is inserted into the dilution chamber
Room 6, the tail end of second branch pipe 13 are connected with second output channel 12, the head end and second of first branch pipe 11
The head end of branch pipe 13 is provided with nozzle 14.By being provided with several the first branch pipes 11 on the first output channel 10, described
Several second branch pipes 13 are provided on two output channels 12, each branch pipe sprays diluent gas, increases gas flow
In disturbance, improve calibrating gas and carrier gas molecule mixing uniformity.Meanwhile the nozzle 14 of first branch pipe 11 with
The nozzle 14 of second branch pipe 12 is towards opposed.Convection current is formed in different directions and calibrating gas, improves calibrating gas again
With the mixing uniformity of carrier gas molecule.
Further, be provided with several upper spacers 15 and several lower clapboards 16 in the dilution chamber 6, it is described on every
Plate 15 is set to the upper plate of the dilution chamber 6, and the lower clapboard 16 is set to the lower plate of the dilution chamber 6, described
Upper spacer 15 and lower clapboard 16 are in along air inlet to gas outlet direction, successively cross-circulation is arranged in the dilution chamber 6, formation
Hybrid channel 17；Gas conveying direction is opposite with the gas flow direction that the nozzle 14 exports in the hybrid channel 17.It is logical
It is opposite with calibrating gas conveying direction to generating convection current to cross diluent gas, further increases the disturbance in gas flow,
Improve the mixing uniformity of calibrating gas and carrier gas molecule.
Still further, being separated with first branch pipe 11 in each upper spacer 15 and the lateral clearance for the lower clapboard 16 that is connected
Or second branch pipe 13, first branch pipe 11 and the second branch pipe 13 are successively reported to the leadship after accomplishing a task cycle arrangement along air inlet to gas outlet.
It is readily comprehensible, the first dilution air flow amount controller 2, the second dilution air flow amount controller 3, third carrier gas flow
Diluent gas in controller 4 and the calibrating gas contact incorporation time in Standard Gases flow controller are successively different, in order to drop
Low-response time, the first dilution air flow amount controller 2, the second dilution air flow amount controller 3, third carrier gas flow control
Flow-rate ratio in device 4 is 2:1:1.Of course, not limiting the first carrier gas flow control in the case where guaranteeing the uniform situation of gas mixing
Device 2 processed, the second dilution air flow amount controller 3, the flow-rate ratio in third dilution air flow amount controller 4.
In further embodiment, the outer wall of the outer wall of first branch pipe 11 and the second branch pipe 13 is provided with several
Venthole 18.When mixed gas continues flowing, is contacted with 18 output gas of stomata and mix and disturb, reached fine dispersion
Purpose.
In the present embodiment, first output channel 10 and the second output channel 12 are inserted into the mixer 1, and institute
The first output channel 10 and the second output channel 12 is stated to be tightly connected by fluorubber material and 1 outer wall of mixer.It mentions
The high air-tightness of device.It is readily comprehensible, in the case where guaranteeing device air-tightness, do not limit first output channel with
The sealing material of second output channel and mixer outer wall, can also be using other sealing techniques in the prior art.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of dilution device based on gas mixing dilution mode, which is characterized in that including mixer, the first carrier gas flow
Controller, the second dilution air flow amount controller, third dilution air flow amount controller, Standard Gases flow controller；The mixer
Inside be provided with dilution chamber, be provided with air inlet and gas outlet on the mixer, the air inlet and gas outlet with it is described
Dilution chamber is connected, and the Standard Gases flow controller is mixed by tee tube with described with the first dilution air flow amount controller
Air inlet connection on device, the second dilution air flow amount controller are connected by the first output channel with the dilution chamber
Logical, the third dilution air flow amount controller is connected by the second output channel with the dilution chamber.
2. the dilution device according to claim 1 based on gas mixing dilution mode, which is characterized in that described first is defeated
Several first branch pipes are provided on pipeline out, the head end of first branch pipe is inserted into the dilution chamber, first branch pipe
Tail end be connected with first output channel；It is provided with several second branch pipes on second output channel, described
The head end of two branch pipes is inserted into the dilution chamber, and the tail end of second branch pipe is connected with second output channel, described
The head end of the head end of first branch pipe and the second branch pipe is provided with nozzle.
3. the dilution device according to claim 2 based on gas mixing dilution mode, which is characterized in that the dilution chamber
Interior is provided with several upper spacers and several lower clapboards, and the upper spacer is set to the upper plate of the dilution chamber, institute
State the lower plate that lower clapboard is set to the dilution chamber, the upper spacer and lower clapboard in the dilution chamber room along air inlet
To gas outlet direction, successively cross-circulation is arranged, and forms hybrid channel；Gas conveying direction and the spray in the hybrid channel
The gas flow direction of mouth output is opposite.
4. the dilution device according to claim 2 based on gas mixing dilution mode, which is characterized in that described first
The nozzle of the nozzle of pipe and the second branch pipe is towards opposed.
5. the dilution device according to claim 3 based on gas mixing dilution mode, which is characterized in that each upper spacer
With first branch pipe or the second branch pipe, first branch pipe and the second branch pipe edge are separated in the lateral clearance for the lower clapboard that is connected
Air inlet to gas outlet is successively reported to the leadship after accomplishing a task cycle arrangement.
6. the dilution device according to claim 1 based on gas mixing dilution mode, which is characterized in that described first is dilute
Outgassing flow controller, the second dilution air flow amount controller, the flow-rate ratio in third dilution air flow amount controller are 2:1:1.
7. the dilution device according to claim 2 based on gas mixing dilution mode, which is characterized in that described first
The outer wall of the outer wall of pipe and the second branch pipe is provided with several ventholes.
8. the dilution device according to claim 1 based on gas mixing dilution mode, which is characterized in that described first is defeated
Pipeline and the second output channel are inserted into the mixer out, and first output channel and the second output channel pass through fluorine
Rubber material and the mixer outer wall are tightly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644760.0A CN109647235A (en) | 2018-12-29 | 2018-12-29 | A kind of dilution device based on gas mixing dilution mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811644760.0A CN109647235A (en) | 2018-12-29 | 2018-12-29 | A kind of dilution device based on gas mixing dilution mode |
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| CN109647235A true CN109647235A (en) | 2019-04-19 |
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| CN201811644760.0A Pending CN109647235A (en) | 2018-12-29 | 2018-12-29 | A kind of dilution device based on gas mixing dilution mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113086956A (en) * | 2021-04-15 | 2021-07-09 | 衢州杭氧特种气体有限公司 | Neon purification process and purification equipment thereof |
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