CN104111181B - A kind of capturing device for captured gas sample - Google Patents
A kind of capturing device for captured gas sample Download PDFInfo
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- CN104111181B CN104111181B CN201410221491.2A CN201410221491A CN104111181B CN 104111181 B CN104111181 B CN 104111181B CN 201410221491 A CN201410221491 A CN 201410221491A CN 104111181 B CN104111181 B CN 104111181B
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Abstract
The present invention relates to a kind of capturing device, more particularly, to a kind of component for atmospheric volatile organic compounds detector.Including a main body for being provided with round platform, the round platform outer wall is circumferentially with some helicla flutes, and capillary tube is wound with the helicla flute, and round platform is provided with two electrode slices of positive pole and negative pole;The outlet end in contact of the air inlet end in contact of the positive electrical pole piece and capillary tube, the negative electricity pole piece and capillary tube.Therefore, the invention has the advantages that:1) small volume, it is lightweight;2) heat loss amount is little, high cooling efficiency;3) energy consumption is low;4) temperature control can be fine adjusted as needed;5) expensive and loaded down with trivial details later maintenance need not be carried out.
Description
Technical field
The present invention relates to a kind of component for atmospheric volatile organic compounds detector, is used to trap more particularly, to a kind of
The capturing device of gaseous sample.
Background technology
The capturing device of existing atmospheric volatile organic compounds, employs folding type cooling system, and it overcomes existing skill
The defect such as the application limitation brought with liquid nitrogen refrigerating and running cost existing for art be excessive.
Folding type cooling system leads to and is usually made up of two independent refrigeration systems, is referred to as high-temperature systems and low temperature
System.Middle temperature cold-producing medium, the low-temperature refrigerant used in cryogenic system used in high-temperature systems.Cold-producing medium in high-temperature systems
Evaporation is to condense discharged heat to absorb cold-producing medium in cryogenic system, is contacted two parts with a condenser/evaporator
Come, it is both the vaporizer of high-temperature systems, is the condenser of cryogenic system again.Cold-producing medium in cryogenic system is steamed in vaporizer
It is sent to cooled object heat absorption to freeze, and this heat is passed to into high-temperature systems cold-producing medium, then again by the system in high-temperature systems
Heat is passed to water cooling medium or air by cryogen, i.e., to environment heat release.
Folding type cooling system has advantages below:The cylinder ratio Two-stage Compression low temperature portion of 1 cryogenic system compressor
Partial compression machine volume of cylinder is much smaller.This is favourable to reducing the weight of whole machine, size.Such as when evaporating temperature is -60 DEG C .Rl2
Compare with the two-stage compression refrigeration machine of R12 with the overlay formula refrigeration machine of R13 compositions, total volume of cylinder can reduce 65%, and
Energy consumption more than 10% can be reduced.Normal pressure, air is kept to be difficult to leak into system, make stable and safe in 2 systems.3 overlappings
Formula refrigeration machine with different refrigerant compositions, and can not only can be combined with different refrigeration modes.For example, low temperature system
System steam compression type refrigeration is circulated, and high-temperature systems Absorption Cooling System.
The shortcoming of folding type cooling system is that the equipment such as condenser/evaporator, expansion vessel and multi-element refrigerant make answering for system
Polygamy is improved.Simultaneously because evaporative condenser is with the presence of heat transfer temperature difference, when heat transfer temperature difference is excessive, folding type cooling system can be made
The work(of consumption is bigger than the system of multi-stage compression unitary system cryogen.
Then, folding type cooling system is applied to trap volatile organic matter in air, needs reach -150 DEG C of system
Cold environment, cannot otherwise trap the low boiling target compound such as similar chloromethanes, but this refrigeration system in longtime running mistake
Have the following disadvantages in journey:1 volume is heavy, and power is big;2 are down to -150 DEG C of required time length from room temperature;3 shed to surrounding air
Heat it is big;4 addition cold-producing mediums are loaded down with trivial details;The cryogenic temperature of 4 folding type cooling systems can only be adjusted in a small range.Therefore, it is
Volatile organic matter in air is more effectively trapped, the capturing device of a kind of low power consuming, high cooling efficiency is needed badly.
The content of the invention
What the above-mentioned technical problem of the present invention was mainly addressed by following technical proposals:
A kind of capturing device for captured gas sample, it is characterised in that including a main body for being provided with round platform, and
One bottom is circumferentially with the cylinder of contact ring;The part of the column body is that cavity and round platform are located in the cavity of cylinder,
And cylinder can occur vertical movement to axial under the driving of a drive mechanism with round platform;The cylinder outer wall circumferentially sets
There is helicla flute, on the helicla flute, be wound with capillary tube;Cylinder is provided with two electrode slices, is positive electrical pole piece and negative electricity respectively
Pole piece;The capillary tube of the Capillary restrictor end in contact of the positive electrical pole piece and capillary tube, the negative electricity pole piece and capillary tube
Outlet end in contact.
In a kind of above-mentioned capturing device for captured gas sample, a flange below the round platform of the main body, is provided with
Disk;A sleeve pipe being enclosed within the refrigeration head of refrigeration machine is provided with below ring flange, described sleeve pipe bottom outer wall is circumferentially with one
Wedge shape snap ring, locking cap is enclosed within sleeve outer wall makes sleeve pipe be fastened on refrigeration head.
In a kind of above-mentioned capturing device for captured gas sample, the cylinder upper surface is provided with a gland, post
External wall is additionally provided with one and is enclosed within cylinder is used for the guard ring for protecting capillary tube;Gland section is U-shaped, is enclosed within guard ring on round platform
It is fastened on round platform outer wall;Positive electrical pole piece and negative electricity pole piece are Z-shaped;Positive electrical pole piece one end supplies capillary tube with being provided with one
The arc groove that passes through simultaneously pushes down fixation, the inwall of positive electrical pole piece arc groove and the Capillary restrictor of capillary tube by guard ring
End in contact;;Negative electricity pole piece one end be provided with an arc groove passed through for capillary tube and pressure combined by gland and guard ring
Firmly fix, the inwall of negative electricity pole piece arc groove and the capillary tube outlet end in contact of capillary tube;The positive electrical pole piece and negative
The pole electrode slice other end is respectively equipped with a junction block for fixing electric wire positive terminal and negative pole end.
In a kind of above-mentioned capturing device for captured gas sample, the guard ring outer wall is provided with an installing hole, institute
State cylinder and be provided with hole corresponding with installing hole, temperature probe stretches into installing hole to cylinder hole, and the gland is provided with one
Probe fixing hole, probe set screw are fixed on temperature probe on guard ring through probe fixing hole.
In a kind of above-mentioned capturing device for captured gas sample, the drive mechanism includes a motor,
One is fixed on the motor connection set in driving motor output shaft, and a push-pull bar by fixing screws;The push-pull bar
One end is provided with guide thread groove, and the other end is provided with fixed screw thread;Push-pull bar is provided with one end of fixed screw thread through gland and cylinder
Location hole and be connected and fixed with gland and cylinder by locking nut;Push-pull bar is provided with one end of guide thread groove and inserts
Enter in motor connection set and interior vertical up-or-down movement can be covered in motor connection;Push-pull bar is provided with the one end side axle of guide thread groove
To a flat mouth is provided with, the arc that a radial section is that angle is more than 90 degree is formed, the push-pull bar is provided with one end of flat mouth and wears
A catch is crossed, the perforation shape in catch is adapted with arc;The outer wall of motor connection set is provided with a guider screw, described
Guider screw is through motor connection set in guide thread groove;Push-pull bar is provided with one end of guide thread groove and is additionally provided with a bullet
Spring groove;Stage clip one end is arranged in spring groove, and the other end is enclosed within driving motor output shaft and is contacted with motor connection set inwall.
In a kind of above-mentioned capturing device for captured gas sample, also including a heat insulation module, by capillary tube, electricity
Pole piece, guard ring and gland are enclosed in the cavity of heat insulation module.
In a kind of above-mentioned capturing device for captured gas sample, the heat insulation module includes an insulation cover and one
The section of individual muff, the insulation cover and a muff is U-shaped, fastens up and down and forms a rectangle guarantor with cavity
Warm component, the muff bottom are provided with an installing hole, and the aperture of the installing hole is more than casing diameter and is less than ring flange
External diameter;Muff bottom is screwed on ring flange;Insulation cover 21 is buckled on muff and fastens;Above-mentioned catch is fixed
On insulation cover.
In a kind of above-mentioned capturing device for captured gas sample, the muff correspondence Capillary restrictor end and hair
Groove is equipped with tubule outlet side, muff is stretched out by the groove of muff respectively in Capillary restrictor end and capillary tube outlet side
Outward.
In a kind of above-mentioned capturing device for captured gas sample, pilot hole on the cylinder, is additionally provided with, it is described to push away
Pull bar is provided with one end of fixed screw thread and is provided with endoporus, in one end insertion pilot hole of guide post, other end insertion push-pull bar endoporus
And be threadably secured.
In a kind of above-mentioned capturing device for captured gas sample, also including the control group of a control motor
Part, the control assembly include being enclosed within the lenticular lenses that motor connection covers top, and the lenticular lenses are fixed on electricity by locking nut
On machine adapter sleeve, lenticular lenses jointly control the switch of motor with optical coupler controller;The insulation cover is provided with one to be used for
The cushion cover of motor is placed, above-mentioned motor connection is set in cushion cover.
Therefore, the invention has the advantages that:1st, small volume, it is lightweight;2nd, high cooling efficiency;3rd, heat dissipation capacity is little, application
Scope is wide;4th, temperature control can be fine adjusted as needed;5th, expensive and loaded down with trivial details later maintenance need not be carried out.
Description of the drawings
Accompanying drawing 1 is the main structure diagram of the present invention.
Accompanying drawing 2 is a kind of dimensional structure diagram (partial cross) of the present invention.
Accompanying drawing 3 is a kind of dimensional structure diagram of the present invention.
Accompanying drawing 4 is the dimensional structure diagram of gland, catch and push-pull bar combination installation in the present invention.
Accompanying drawing 5 is the dimensional structure diagram of push-pull bar in the present invention.
Specific embodiment
Below by embodiment, and accompanying drawing is combined, technical scheme is described in further detail.In figure,
Round platform 1, contact ring 2, cylinder 3, helicla flute 4, capillary tube 5, positive electrical pole piece 6, negative electricity pole piece 7, Capillary restrictor end 8, hair
Tubule outlet side 9, ring flange 10, sleeve pipe 11, wedge shape snap ring 12, locking cap 13, gland 14, guard ring 15, installing hole, temperature probe
17th, probe fixing hole, probe set screw 19, motor 20, motor connection set 21, push-pull bar 22, guide thread groove 23, lock
Tight nut 24, flat mouth 25, catch 26, guider screw 27, spring groove 28, stage clip 29, insulation cover 30, muff 31, pilot hole 32,
Guide post 33, lenticular lenses 34, cushion cover 35, main body 36, junction block 37, guide thread.
Embodiment:
First, introduce the structure of the present invention:
The present invention includes a main body 36 for being provided with round platform 1, and a bottom is circumferentially with the cylinder 3 for contacting ring 2;Institute
It is that cavity and round platform 1 are located in the cavity of cylinder 3 to state the part inside cylinder 3, and cylinder 3 can be in the driving of a drive mechanism
There is vertical movement to axial in lower and round platform 1;3 outer wall of the cylinder is circumferentially with helicla flute 4, on the helicla flute 4 around
There is capillary tube 5;Cylinder 3 is provided with two electrode slices, is positive electrical pole piece 6 and negative electricity pole piece 7 respectively;The positive electrical pole piece
6 are contacted with the Capillary restrictor end 8 of capillary tube 5, and the negative electricity pole piece 7 is contacted with the capillary tube outlet side 9 of capillary tube 5.
A ring flange 10 is provided with below the round platform 1 of main body 36;A system for being enclosed within refrigeration machine is provided with below ring flange 10
Sleeve pipe 11 on cold head, 11 bottom outer wall of described sleeve pipe are circumferentially with a wedge shape snap ring 12, and locking cap 13 is enclosed within outside sleeve pipe 11
Wall makes sleeve pipe 11 be fastened on refrigeration head.
3 upper surface of cylinder is provided with a gland 14, and 3 outer wall of cylinder is additionally provided with one and is enclosed within cylinder 3 to be used to protect capillary
The guard ring 15 of pipe 5;14 section of gland is U-shaped, is enclosed within round platform 1 and for guard ring 15 to be fastened on 1 outer wall of round platform;6 He of positive electrical pole piece
Negative electricity pole piece 7 is Z-shaped;6 one end of positive electrical pole piece be provided with an arc groove passed through for capillary tube 5 and pass through guard ring
15 push down fixation, and the inwall of 6 arc groove of positive electrical pole piece is contacted with the Capillary restrictor end 8 of capillary tube 5;;Negative electricity pole piece 7
Fixation is pushed down with being provided with an arc groove passed through for capillary tube 5 and combining by gland 14 and guard ring 15 in one end, negative electricity
The inwall of 7 arc groove of pole piece is contacted with the capillary tube outlet side 9 of capillary tube 5;The positive electrical pole piece 6 and negative electricity pole piece 7
The other end is respectively equipped with a junction block 37 for fixing electric wire positive terminal and negative pole end.
15 outer wall of guard ring is provided with an installing hole, and the cylinder 3 is provided with hole corresponding with installing hole, and temperature probe 17 is stretched
Enter installing hole to 3 hole of cylinder, the gland 14 is provided with a probe fixing hole, probe set screw 19 is fixed through probe
Hole is fixed on temperature probe 17 on guard ring 15.
Drive mechanism includes a motor 20, and one is fixed on 20 output shaft of motor by fixing screws
Motor connection set 21, and a push-pull bar 22;22 one end of the push-pull bar is provided with guide thread groove 23, and the other end is provided with fixation
Screw thread;Push-pull bar 22 is provided with one end of fixed screw thread and passes through the location hole of gland 14 and cylinder 3 and pass through locking nut 24 with pressure
Lid 14 and cylinder 3 are connected and fixed;Push-pull bar 22 is provided with one end insertion motor connection set 21 of guide thread and can be
Vertical up-or-down movement in motor connection set 21;Push-pull bar 22 is provided with the one end side of guide thread and is axially arranged with a flat mouth 25,
The arc that a radial section is that angle is more than 90 degree is formed, the push-pull bar 22 is provided with one end of flat mouth 25 and passes through a catch
26, the perforation shape in catch 26 is adapted with arc;The outer wall of motor connection set 21 is provided with a guider screw 27, described to lead
It is located in guide thread groove 23 to screw 27 through motor connection set 21;Push-pull bar 22 is provided with one end of guide thread and is additionally provided with one
Individual spring groove 28;29 one end of stage clip is arranged in spring groove 28, and the other end is enclosed within 20 output shaft of motor and is connected with motor
21 inwall of female connector is contacted.
Present invention additionally comprises capillary tube 5, electrode slice, guard ring 15 and gland 14 are enclosed in insulation by a heat insulation module
In the cavity of component.
Heat insulation module includes cutting for an insulation cover 30 and a muff 31, the insulation cover 30 and a muff 31
Face is U-shaped, fastens up and down and forms a rectangle heat insulation module with cavity, and 31 bottom of muff is provided with an installing hole,
The aperture of installing hole is more than 11 diameter of sleeve pipe and is less than 10 external diameter of ring flange;31 bottom of muff is screwed in ring flange
On 10;Insulation cover 21 is buckled on muff 31 and fastens;Above-mentioned catch 26 is fixed on insulation cover 30.
Groove, Capillary restrictor end 8 and hair are equipped with 31 corresponding Capillary restrictor end 8 of muff and capillary tube outlet side 9
Stretched out outside muff 31 by the groove of muff 31 respectively tubule outlet side 9;Pilot hole 32, push-pull bar 22 are additionally provided with cylinder 3
The one end for being provided with fixed screw thread is provided with endoporus, in one end insertion pilot hole 32 of guide post 33, in other end insertion push-pull bar 22
Hole is simultaneously threadably secured.
Present invention additionally comprises the control assembly of a control motor 20, the control assembly includes being enclosed within motor connection
Cover the lenticular lenses 34 on 21 tops, the lenticular lenses 34 are fixed on motor connection set 21 by locking nut, lenticular lenses 34 and light
Coupling controller jointly controls the switch of motor 20;The insulation cover 30 is provided with a pad for placing motor 20
Set 35, above-mentioned motor connection set 21 are arranged in cushion cover 35.
During work, ring 2 being contacted first and being contacted with round platform 1, round platform 1 is enclosed within refrigeration head and starts refrigeration, needed for refrigeration is reached
When temperature, 20 motor adapter sleeve 21 of motor rotarily drives guider screw 27 and rotates, and 27 one end of guider screw is arranged
So as to drive push-pull bar 22 to move in guide thread groove 23, due to 25 structure of flat mouth of push-pull bar 22 and setting for catch 26
Put, cause push-pull bar 22 rotate, be similar to screw mandrel principle, circular motion switched to into vertical up-or-down movement, so as to push-pull bar 22
Drive gland 14 to separate with the main body 36 for being provided with round platform 1 so as to drive whole cylinder 3 to rise, then start heating, band is warmed to
It is temperature required, if desired start refrigeration, then now, 20 motor adapter sleeve 21 of motor continues to rotarily drive guider screw
27 rotations, when guider screw 27 is rotated to the flat mouth 25 of push-pull bar 22, push-pull bar 22 is pursued to and is fallen and pushing away in stage clip 29
Drive the contact ring 2 of cylinder 3 to fit with round platform 1 under power again, start refrigeration;When needing heating again, the above-mentioned step of repetitive cycling
It is rapid.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although more used herein round platform 1, contact ring 2, cylinder 3, helicla flute 4, capillary tube 5, positive electrical pole piece 6,
Negative electricity pole piece 7, Capillary restrictor end 8, capillary tube outlet side 9, ring flange 10, sleeve pipe 11, wedge shape snap ring 12, locking cap 13,
Gland 14, guard ring 15, temperature probe 17, probe set screw 19, motor 20, motor connection set 21, push-pull bar 22, guiding
Thread groove 23, locking nut 24, flat mouth 25, catch 26, guider screw 27, spring groove 28, stage clip 29, insulation cover 30, muff
31st, the term such as pilot hole 32, guide post 33, lenticular lenses 34, cushion cover 35, main body 36, junction block 37, but be not precluded from using other
The probability of term.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms;They are explained
All it is contrary with spirit of the invention into any additional restriction.
Claims (6)
1. a kind of capturing device for captured gas sample, it is characterised in that including a main body for being provided with round platform (1)
, and bottom is circumferentially with the cylinder (3) of contact ring (2) (36);The internal part of the cylinder (3) is cavity and round platform
(1) in the cavity of cylinder (3), and cylinder (3) can be occurred to axial with round platform (1) under the driving of a drive mechanism
Vertical movement;Cylinder (3) outer wall is circumferentially with helicla flute (4), is wound with capillary tube (5) on the helicla flute (4);Cylinder
(3) two electrode slices are provided with, are positive electrical pole piece (6) and negative electricity pole piece (7) respectively;The positive electrical pole piece (6) and hair
Capillary restrictor end (8) contact of tubule (5), the negative electricity pole piece (7) are connect with the capillary tube outlet side (9) of capillary tube (5)
Touch;
A ring flange (10) is provided with below the round platform (1) of the main body (36);One is provided with below ring flange (10) and is enclosed within system
Sleeve pipe (11) on the refrigeration head of cold, described sleeve pipe (11) bottom outer wall are circumferentially with a wedge shape snap ring (12), locking cap
(13) being enclosed within sleeve pipe (11) outer wall makes sleeve pipe (11) be fastened on refrigeration head;
The drive mechanism includes a motor (20), and one is fixed on motor (20) output shaft by fixing screws
On motor connection set (21), an and push-pull bar (22);Described push-pull bar (22) one end is provided with guide thread groove (23), separately
One end is provided with fixed screw thread;Push-pull bar (22) be provided with one end of fixed screw thread through gland (14) and cylinder (3) location hole simultaneously
It is connected and fixed with gland (14) and cylinder (3) by locking nut (24);Push-pull bar (22) is provided with guide thread groove
(23) in one end insertion motor connection set (21) and can be in the interior vertical up-or-down movement of motor connection set (21);Push-pull bar (22) sets
The one end side for having guide thread groove (23) is axially arranged with a flat mouth (25), and it is that angle is more than 90 degree to form a radial section
Arc, the push-pull bar (22) is provided with one end of flat mouth (25) through a catch (26), the perforation shape in catch (26) with
Arc is adapted;The outer wall of motor connection set (21) is provided with a guider screw (27), and the guider screw (27) is through motor
Adapter sleeve (21) is in guide thread groove (23);Push-pull bar (22) is provided with one end of guide thread groove (23) and is additionally provided with a bullet
Spring groove (28);Stage clip (29) one end is arranged in spring groove (28), the other end be enclosed within motor (20) output shaft and with electricity
Machine adapter sleeve (21) inwall is contacted;Also include a heat insulation module, by capillary tube (5), electrode slice, guard ring (15) and gland
(14) it is enclosed in the cavity of heat insulation module;The heat insulation module includes an insulation cover (30) and a muff (31), institute
The section for stating insulation cover (30) and a muff (31) is U-shaped, fastens up and down and forms a rectangle insulation with cavity
Component, muff (31) bottom are provided with an installing hole, and the aperture of the installing hole is more than sleeve pipe (11) diameter and is less than
Ring flange (10) external diameter;Muff (31) bottom is screwed on ring flange (10);Insulation cover (30) is buckled in muff
(31) on and fasten;Above-mentioned catch (26) is fixed on insulation cover (30).
2. a kind of capturing device for captured gas sample according to claim 1, it is characterised in that the cylinder
(3) upper surface is provided with a gland (14), and cylinder (3) outer wall is additionally provided with one and is enclosed within cylinder (3) to be used to protect capillary tube (5)
Guard ring (15);Gland (14) section is U-shaped, is enclosed within round platform (1) and for guard ring (15) to be fastened on round platform (1) outer wall;Positive electrical
Pole piece (6) and negative electricity pole piece (7) are Z-shaped;Positive electrical pole piece (6) one end is provided with an arc passed through for capillary tube (5)
Groove simultaneously pushes down fixation, the inwall of positive electrical pole piece (6) arc groove and the Capillary restrictor of capillary tube (5) by guard ring (15)
End (8) contact;Negative electricity pole piece (7) one end be provided with an arc groove passed through for capillary tube (5) and pass through gland (14) and
Guard ring (15) is combined and pushes down fixation, the inwall of negative electricity pole piece (7) arc groove and the capillary tube outlet side (9) of capillary tube (5)
Contact;The positive electrical pole piece (6) and negative electricity pole piece (7) other end are respectively equipped with one for fixing electric wire positive terminal and bearing
Extreme junction block (37).
3. a kind of capturing device for captured gas sample according to claim 2, it is characterised in that the guard ring
(15) outer wall is provided with an installing hole, and the cylinder (3) is provided with hole corresponding with installing hole, and temperature probe (17) stretches into installation
In hole to cylinder (3) hole, the gland (14) is provided with a probe fixing hole, and probe set screw (19) is fixed through probe
Hole is fixed on temperature probe (17) on guard ring (15).
4. a kind of capturing device for captured gas sample according to claim 3, it is characterised in that the muff
(31) correspondence Capillary restrictor end (8) and capillary tube outlet side (9) place are equipped with groove, and Capillary restrictor end (8) and capillary tube go out
Muff (31) is stretched out outward by the groove of muff (31) respectively in gas end (9).
5. a kind of capturing device for captured gas sample according to claim 4, it is characterised in that the cylinder
(3) it is additionally provided with pilot hole (32) on, one end that the push-pull bar (22) is provided with fixed screw thread is provided with endoporus, the one of guide post (33)
In end insertion pilot hole (32), other end insertion push-pull bar (22) endoporus is simultaneously threadably secured.
6. a kind of capturing device for captured gas sample according to claim 5, it is characterised in that also including
The control assembly of control motor (20), the control assembly include the lenticular lenses for being enclosed within motor connection set (21) top
(34), the lenticular lenses (34) are fixed on motor connection set (21) by locking nut, lenticular lenses (34) and optical coupler controller
Jointly control the switch of motor (20);The insulation cover (30) is provided with a cushion cover for placing motor (20)
(35), above-mentioned motor connection set (21) is arranged in cushion cover (35).
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CN201410221491.2A CN104111181B (en) | 2014-05-23 | 2014-05-23 | A kind of capturing device for captured gas sample |
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CN104111181B true CN104111181B (en) | 2017-03-29 |
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CN109870341B (en) * | 2017-12-01 | 2022-02-11 | 中国科学院大连化学物理研究所 | Volatile organic compound in-situ cold trap enrichment-thermal desorption sample pretreatment device |
CN112326573B (en) * | 2020-11-03 | 2024-03-08 | 广西中检食品检测有限公司 | Method for rapidly measuring mercury content in seasoning by direct mercury meter |
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CN201740740U (en) * | 2010-07-02 | 2011-02-09 | 武汉市天虹仪表有限责任公司 | Integrated device used for reducing NO2 and removing O3 |
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CN204255698U (en) * | 2014-05-23 | 2015-04-08 | 武汉市天虹仪表有限责任公司 | A kind of capturing device for captured gas sample |
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US5092156A (en) * | 1987-07-08 | 1992-03-03 | Thermedics Inc. | Vapor collector/desorber with tube bundle and metal foil |
GB2374866A (en) * | 1998-05-19 | 2002-10-30 | Markes Int Ltd | Sample tube cap |
EP1262772A2 (en) * | 2001-05-30 | 2002-12-04 | Gerstel Systemtechnik GmbH & Co. KG | Temperature-controlled injector for chemical analyser |
CN201740740U (en) * | 2010-07-02 | 2011-02-09 | 武汉市天虹仪表有限责任公司 | Integrated device used for reducing NO2 and removing O3 |
CN202256359U (en) * | 2011-09-16 | 2012-05-30 | 武汉市天虹仪表有限责任公司 | On-line volatile organic compound analyzer |
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CN104111181A (en) | 2014-10-22 |
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