CN108645943A - The gas chromatograph post case quickly heated - Google Patents
The gas chromatograph post case quickly heated Download PDFInfo
- Publication number
- CN108645943A CN108645943A CN201810552666.6A CN201810552666A CN108645943A CN 108645943 A CN108645943 A CN 108645943A CN 201810552666 A CN201810552666 A CN 201810552666A CN 108645943 A CN108645943 A CN 108645943A
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- China
- Prior art keywords
- heater strip
- chromatographic column
- interior
- interior heater
- heated filament
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/60—Construction of the column
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/50—Conditioning of the sorbent material or stationary liquid
- G01N30/52—Physical parameters
- G01N30/54—Temperature
Abstract
The invention discloses a kind of gas chromatograph post cases quickly heated, are related to gas chromatograph techniques field, its key points of the technical solution are that：Including babinet, chromatographic column arranged in the box body, interior heater strip and additional heated filament are additionally provided in the babinet, the interior heater strip, additional heated filament, chromatographic column are bent twist, and the axis for the spiral that the interior heater strip, additional heated filament, chromatographic column are formed is coaxial；The chromatographic column is located in the helical cavity of additional heated filament formation, and there are external series gaps between the additional heated filament and chromatographic column；The interior heater strip is located in the helical cavity of chromatographic column formation, and there are internal clearances, the additional heated filament, interior heater strip to be electrically connected to a power source between the interior heater strip and chromatographic column.Gas chromatograph can be measured the benzene homologues in air, and the chromatographic column of this post case is heated very fast and is heated evenly, even if need not fall into a long wait if when equipment is in cold conditions can start to detect；And the temperature of chromatographic column being capable of accuracy controlling.
Description
Technical field
The present invention relates to gas chromatograph techniques field, more particularly to a kind of gas chromatograph post case quickly heated.
Background technology
Gas chromatograph is the instrument and equipment for measuring the component in mixture, when measurement, will analysis sample in injection port
After gasification, chromatographic column is brought by carrier gas, the characteristics of different retention properties is had according to each component in mixture, each component is made to detach,
Detector is imported successively, to obtain the detection signal of each component.It can be with by comparison according to the precedence for importing detector
Component is distinguished, each component content can be calculated according to peak heights or peak area, the detector of generally use has Thermal Conductivity
Device, flame ionization detector etc..In order to make sample gas pass through in chromatographic column with defined temperature, generally use post case carries out
Chromatographic column is contained in inside, the temperature of chromatographic column is adjusted by heating, post case.
Existing application publication number is that the Chinese invention patent application of CN103293254A discloses a kind of gas phase chromatographic device,
Including column oven, sample vaporizer, carrier gas supply unit, detector, control unit and hydrogen detection sensor, column oven
It is interior to be configured with chromatographic column, heater and radial fan.
Column oven, that is, post case, but the heater of existing post case is offset to one end in case, and need fan in case
Heat is stirred evenly, and heating speed is slower, and equipment needs to wait for the long period that can just be detected when being in cold conditions.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of gas chromatograph column quickly heated
Case, with the fast advantage of heating speed.
The present invention above-mentioned technical purpose technical scheme is that：A kind of gas phase color quickly heated
Spectrometer post case, including babinet, chromatographic column arranged in the box body are additionally provided with interior heater strip and additional heated filament in the babinet,
The interior heater strip, additional heated filament, chromatographic column are bent twist, and the interior heater strip, additional heated filament, chromatographic column are formed
The axis of spiral is coaxial；The chromatographic column is located in the helical cavity of additional heated filament formation, the additional heated filament and chromatographic column it
Between there are external series gaps；The interior heater strip is located in the helical cavity of chromatographic column formation, is stayed between the interior heater strip and chromatographic column
There are internal clearance, the additional heated filament, interior heater strip to be electrically connected to a power source.
Through the above technical solutions, when being heated, inject sample in one end of chromatographic column, at the same in starting heater strip and
The power supply of additional heated filament；Since interior heater strip and additional heated filament are respectively against chromatographic column, and spiral shape increases heating surface area, institute
It with the heated very fast of chromatographic column and is heated evenly, the air in babinet is stirred without separately setting fan；Even if equipment is in
When cold conditions, need not also fall into a long wait can start to detect.
Preferably, there are the spirals that heating gap, the additional heated filament are formed between the helix that the chromatographic column is formed
Line face heats gap.
Through the above technical solutions, additional heated filament adstante febre, the infrared radiant energy of additional heated filament directly act on chromatographic column
In adjacent lines, the temperature of chromatographic column is promoted very fast and is heated evenly.
Preferably, outer shelf is provided in the external series gap, the outer shelf separates additional heated filament and chromatographic column；It is described
Interior shelf is provided in internal clearance, the interior shelf separates chromatographic column and interior heater strip.
Through the above technical solutions, outer shelf separates additional heated filament and chromatographic column, interior shelf is by interior heater strip and chromatography
Column separates, and avoiding three from being in direct contact causes chromatographic column local temperature excessively high.
Preferably, the additional heated filament and interior heater strip carry out independent heating by two power supplys respectively, and two power supplys can be solely
The vertical voltage adjusted the output on additional heated filament or interior heater strip.
Through the above technical solutions, since two power supplys for heating interior heater strip, additional heated filament can be separately adjustable
Output to the voltage on additional heated filament or interior heater strip, then additional heated filament, interior heater strip temperature can be separately adjustable, to essence
The really temperature of control chromatographic column.
Preferably, it is fixed with outer temperature sensor on the additional heated filament, interior temperature is fixed on the interior heater strip and is passed
Sensor is fixed with middle temperature sensor in the chromatographic column；It is provided on the babinet for showing outer temperature sensor, medium temperature
The display device for the temperature that degree sensor, interior temperature sensor detect.
Through the above technical solutions, the temperature detected by three temperature sensors that display device is shown, relevant people
Member can be visually known the temperature of interior heater strip, additional heated filament and chromatographic column, convenient for the control to chromatogram column temperature.
Preferably, the cabinet wall is provided with thermal insulation layer.
Through the above technical solutions, thermal insulation layer is used to reduce the heat exchange inside and outside babinet, energy loss is reduced.
Preferably, the interior heater strip can be slided along the axis direction of its spiral, be provided with and be used on the babinet
The driving mechanism of heater strip sliding in driving.
Through the above technical solutions, driving mechanism is moved by heater strip in driving, it is located at color to change interior heater strip
Compose the length in the helical cavity of column.When the sample in chromatographic column has just enter into babinet, heated first by additional heated filament, when
Sample is heated when reaching between additional heated filament and interior heater strip by two heater strips jointly.Setting is for for certain to temperature in this way
The excessively sensitive sample of degree variation makes heating temperature form two gradients and is heated for sample, and the temperature of sample steps up, sample
It is not likely to produce qualitative change, expands the scope of application of gas chromatograph.
Preferably, the driving mechanism includes the adjusting rod being rotatably arranged in babinet, the adjusting rod and babinet screw thread
Connection, the end of the adjusting rod is pierced by babinet and is provided with handwheel；The axis of screw of the adjusting rod and interior heater strip is coaxial,
It is fixed with mounting bracket on the interior heater strip, the turn trough coordinated with mounting bracket, the interior heater strip are offered on the adjusting rod
It can be rotated relative to adjusting rod, and axial movement can not be generated relative to adjusting rod.
Through the above technical solutions, under normal circumstances, interior heater strip mounting bracket, adjusting rod supporting role under be in it
Installation site；When rotating handwheel, handwheel drives adjusting rod rotation, adjusting rod to be generated under the threaded connection effect with babinet axial
Mobile, adjusting rod drives interior heater strip to move by mounting bracket in turn.
Preferably, it is coaxially fixed with driving gear on the adjusting rod, is slided on the babinet and is provided with rack, the tooth
Item is driven by driving gear and is slided, and pointer is provided on the rack.
Through the above technical solutions, when adjusting rod rotates, adjusting rod is while driving interior heater strip to move, adjusting rod
It is slided by driving gear drive rack, to change the position of pointer.Since the position of pointer and the position of interior heater strip are
Linear relationship, then user can easily be inferred to the relative position between interior heater strip and chromatographic column by the position of pointer, just
In the control to warming temperature gradient.
In conclusion the present invention having the beneficial effect that in contrast to the prior art：
1, it chromatographic column heated very fast and is heated evenly, it is not necessary that fan is arranged；
2, by shelf in setting and outer shelf, prevent chromatographic column local temperature excessively high；
3, the temperature of chromatographic column can accuracy controlling, and can show the temperature of additional heated filament, interior heater strip, chromatographic column；
4, by the way that driving mechanism is arranged, heating temperature can be made to form two gradients.
Description of the drawings
Fig. 1 is the stereogram for the gas chromatograph post case of embodiment quickly heated, and mainly protrudes the external knot of this post case
Structure；
Fig. 2 is the A-A sectional views of Fig. 1, mainly protrudes the internal structure of this post case；
Fig. 3 is the explosive view inside post case, the main structure for protruding outer shelf, mounting bracket.
Reference numeral：1, babinet；2, chromatographic column；3, interior heater strip；4, additional heated filament；11, thermal insulation layer；21, interface；41、
External series gap；411, outer shelf；22, gap is heated；31, internal clearance；311, interior shelf；5, adjusting rod；51, handwheel；52, driving tooth
Wheel；53, mounting bracket；531, mounting hole；54, turn trough；61, outer temperature sensor；62, middle temperature sensor；63, interior temperature sensing
Device；6, display device；71, driven gear；72, rack；721, pointer.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
As depicted in figs. 1 and 2, a kind of gas chromatograph post case quickly heated, including babinet 1, be set in babinet 1
Chromatographic column 2 is additionally provided with interior heater strip 3 and additional heated filament 4 in babinet 1, and interior heater strip 3, additional heated filament 4, chromatographic column 2 are bent
Twist and the axis of screw of formation is coaxial.
Babinet 1 is cuboid, and babinet 1 is equipped with the chamber door for switch, and the inner wall attaching of babinet 1 is provided with asbestos material
The thermal insulation layer 11 of matter, thermal insulation layer 11 are used to reduce the heat exchange inside and outside babinet 1.The both ends of chromatographic column 2 extend upwardly to babinet 1
Inner top, the outer top of babinet 1 are provided with the interface 21 being connected to respectively with the both ends of chromatographic column 2, and two interfaces 21 are for distinguishing
Input, output sample.
As shown in Figures 2 and 3, the screw diameter that additional heated filament 4, chromatographic column 2, interior heater strip 3 are formed is sequentially reduced, chromatography
Column 2 is located in the helical cavity of the formation of additional heated filament 4, and there are external series gaps 41 between additional heated filament 4 and chromatographic column 2.External series gap 41
It is inside provided with outer shelf 411, the material of outer shelf 411 is fire resistant resin, and outer shelf 411 divides additional heated filament 4 and chromatographic column 2
Every avoiding the two from being in direct contact causes 2 local temperature of chromatographic column excessively high.There are between heating between the helix that chromatographic column 2 is formed
Gap 22, the helix face that additional heated filament 4 is formed heat gap 22.Additional heated filament 4 is made of the copper pipe for being equipped with resistance wire,
Both ends are fixedly connected with 1 inner wall of babinet, and additional heated filament 4 is generated heat by independent power supply power supply.4 adstante febre of additional heated filament, outside
The infrared radiant energy of heater strip 4 directly acts in the adjacent lines of chromatographic column 2, and the temperature of chromatographic column 2 is promoted comparatively fast.
Interior heater strip 3 is located in the helical cavity of the formation of chromatographic column 2, and there are internal clearances between interior heater strip 3 and chromatographic column 2
31.Interior shelf 311 is provided in internal clearance 31, the material of interior shelf 311 is also fire resistant resin, and interior shelf 311 is rubbed by quiet
It wipes power to fix with chromatographic column 2, interior shelf 311 separates interior heater strip 3 and chromatographic column 2, and avoiding the two from being in direct contact leads to chromatography
2 local temperature of column is excessively high.Interior heater strip 3 is also made of the copper pipe for being equipped with resistance wire, and interior heater strip 3 can be along the axis of its spiral
Direction is slided, and the driving mechanism for driving interior heater strip 3 to slide is provided on babinet 1.
As depicted in figs. 1 and 2, driving mechanism includes the adjusting rod 5 being rotatably arranged in babinet 1, adjusting rod 5 and interior heating
The axis of screw of silk 3 is coaxial, and one end of adjusting rod 5 is threadedly coupled with babinet 1 and is pierced by babinet 1, and end is fixed with handwheel 51；
The other end of adjusting rod 5 is also pierced by babinet 1, and end is coaxially fixed with driving gear 52.It is fixed with mounting bracket on interior heater strip 3
53, the center of mounting bracket 53 offers mounting hole 531, and the lateral wall of adjusting rod 5 offers the turn trough 54 of annular, and mounting bracket 53 is logical
It crosses mounting hole 531 to be sheathed at turn trough 54, interior heater strip 3 can be rotated relative to adjusting rod 5, and can not be produced relative to adjusting rod 5
Raw axial movement.
Under normal circumstances, interior heater strip 3 mounting bracket 53, adjusting rod 5 supporting role under be in its installation site.Rotation
When handwheel 51, handwheel 51 drives adjusting rod 5 to rotate, and adjusting rod 5 generates axial movement under the threaded connection effect with babinet 1,
It is located at the length in the helical cavity of chromatographic column 2 to change interior heater strip 3.When the sample in chromatographic column 2 has just enter into babinet 1
When, it is heated by additional heated filament 4, is total to by two heater strips when sample reaches between additional heated filament 4 and interior heater strip 3 first
With heating.Setting is for for certain samples excessively sensitive to temperature change, making heating temperature form two gradients and supplying in this way
Sample heats, and the temperature of sample steps up, and sample is not likely to produce qualitative change, expands the scope of application of gas chromatograph.
The both ends of interior heater strip 3 pass through conducting wire and independent power electric connection.For heating interior heater strip 3, additional heated filament 4
Two power supplys can separately adjustable output to the voltage on additional heated filament 4 or interior heater strip 3, then additional heated filament 4, interior heater strip
3 temperature can be separately adjustable, to accurately control the temperature of chromatographic column 2.
As shown in figures 1 and 3, it is fixed with outer temperature sensor 61 on additional heated filament 4, interior temperature is fixed on interior heater strip 3
Sensor 63 is spent, middle temperature sensor 62 is fixed in chromatographic column 2；It is provided on the outer roof of babinet 1 for showing outer temperature
The display device 6 for the temperature that sensor 61, middle temperature sensor 62, interior temperature sensor 63 detect.It is aobvious by display device 6
The temperature that three temperature sensors shown detect, related personnel can be visually known interior heater strip 3, additional heated filament 4 and color
The temperature for composing column 2, convenient for the control to 2 temperature of chromatographic column.
Babinet 1 is located at rotation on the side wall of driving gear 52 and is provided with driven gear 71, driven gear 71 and driving gear
52 engagements, the wherein thickness of driving gear 52 are more than driven gear 71, when driving gear 52 moves along its axis, two gears
It remains to keep meshing state.Sliding is provided with the rack 72 engaged with driven gear 71 on babinet 1, and pointer is fixed on rack 72
721.When adjusting rod 5 rotates, adjusting rod 5 drive interior heater strip 3 move while, adjusting rod 5 by driving gear 52, from
The engagement drive rack 72 of moving gear 71 is slided, to change the position of pointer 721.Due to pointer 721 position with it is interior
The position of heater strip 3 is linear relationship, then user can easily be inferred to interior heater strip 3 and chromatography by the position of pointer 721
Relative position between column 2, convenient for the control to warming temperature gradient.
When being heated, sample is injected in one end of chromatographic column 2, while starting the electricity of interior heater strip 3 and additional heated filament 4
Source.Since interior heater strip 3 and additional heated filament 4 are respectively against chromatographic column 2, and spiral shape increases heating surface area, so chromatographic column 2
It is heated very fast and be heated evenly, the air in babinet 1 is stirred without separately setting fan；Even if equipment is in cold conditions,
Also need not fall into a long wait can start to detect.
The above is only the exemplary embodiment of the present invention, protection domain and is not intended to limit the present invention, this hair
Bright protection domain is determined by the attached claims.
Claims (9)
1. a kind of gas chromatograph post case quickly heated, including babinet (1), the chromatographic column (2) that is set in babinet (1),
It is characterized in：It is additionally provided with interior heater strip (3) and additional heated filament (4), the interior heater strip (3), additional heated filament in the babinet (1)
(4), chromatographic column (2) is bent twist, the spiral that the interior heater strip (3), additional heated filament (4), chromatographic column (2) are formed
Axis is coaxial；The chromatographic column (2) is located in the helical cavity of additional heated filament (4) formation, the additional heated filament (4) and chromatographic column
(2) there are external series gap (41) between；The interior heater strip (3) is located in the helical cavity of chromatographic column (2) formation, the interior heater strip
(3) there are internal clearance (31), the additional heated filament (4), interior heater strip (3) to be electrically connected to a power source between chromatographic column (2).
2. the gas chromatograph post case according to claim 1 quickly heated, it is characterized in that：The chromatographic column (2) is formed
Helix between there are heating gap (22), helix face heating gap (22) that the additional heated filament (4) is formed.
3. the gas chromatograph post case according to claim 1 quickly heated, it is characterized in that：It is set in the external series gap (41)
It is equipped with outer shelf (411), the outer shelf (411) separates additional heated filament (4) and chromatographic column (2)；In the internal clearance (31)
It is provided with interior shelf (311), the interior shelf (311) separates chromatographic column (2) and interior heater strip (3).
4. the gas chromatograph post case according to claim 1 quickly heated, it is characterized in that：The additional heated filament (4) and
Interior heater strip (3) carries out independent heating by two power supplys respectively, and two power supplys separately adjustable can be exported to additional heated filament (4) or interior
Voltage on heater strip (3).
5. the gas chromatograph post case according to claim 4 quickly heated, it is characterized in that：On the additional heated filament (4)
It is fixed with outer temperature sensor (61), interior temperature sensor (63), the chromatographic column (2) are fixed on the interior heater strip (3)
On be fixed with middle temperature sensor (62)；It is provided on the babinet (1) for showing that outer temperature sensor (61), middle temperature pass
The display device (6) for the temperature that sensor (62), interior temperature sensor (63) detect.
6. the gas chromatograph post case according to claim 1 quickly heated, it is characterized in that：Babinet (1) inner wall is set
It is equipped with thermal insulation layer (11).
7. the gas chromatograph post case according to claim 1 quickly heated, it is characterized in that：Interior heater strip (3) energy
Axis direction along its spiral is slided, and the driving machine for driving interior heater strip (3) to slide is provided on the babinet (1)
Structure.
8. the gas chromatograph post case according to claim 7 quickly heated, it is characterized in that：The driving mechanism includes turning
The dynamic adjusting rod (5) being arranged in babinet (1), the adjusting rod (5) are threadedly coupled with babinet (1), the end of the adjusting rod (5)
Portion is pierced by babinet (1) and is provided with handwheel (51)；The adjusting rod (5) and the axis of screw of interior heater strip (3) are coaxial, described interior
It is fixed with mounting bracket (53) on heater strip (3), the turn trough (54) with mounting bracket (53) cooperation is offered on the adjusting rod (5),
The interior heater strip (3) can rotate relative to adjusting rod (5), and can not generate axial movement relative to adjusting rod (5).
9. the gas chromatograph post case according to claim 8 quickly heated, it is characterized in that：It is same on the adjusting rod (5)
Axis is fixed with driving gear (52), is slided on the babinet (1) and is provided with rack (72), the rack (72) is by driving gear
(52) driving is slided, and pointer (721) is provided on the rack (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810552666.6A CN108645943B (en) | 2018-05-31 | 2018-05-31 | Fast heating gas chromatograph column box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810552666.6A CN108645943B (en) | 2018-05-31 | 2018-05-31 | Fast heating gas chromatograph column box |
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| CN108645943A true CN108645943A (en) | 2018-10-12 |
| CN108645943B CN108645943B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810552666.6A Active CN108645943B (en) | 2018-05-31 | 2018-05-31 | Fast heating gas chromatograph column box |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709247A (en) * | 2019-02-27 | 2019-05-03 | 辽东学院 | A kind of gas chromatograph post case quickly heated |
| CN110596289A (en) * | 2019-10-17 | 2019-12-20 | 钢研纳克检测技术股份有限公司 | Chromatographic column device capable of rapidly increasing and decreasing temperature |
| CN111796045A (en) * | 2020-07-13 | 2020-10-20 | 杭州道宇检测技术有限公司 | Chromatographic column heating device for gas chromatograph |
| CN112034081A (en) * | 2020-09-07 | 2020-12-04 | 浙江安联检测技术服务有限公司 | High-efficient heating gas chromatography device |
| CN112540140A (en) * | 2020-12-16 | 2021-03-23 | 中船重工（邯郸）派瑞特种气体有限公司 | Equipment and method for measuring trace impurities in HF (hydrogen fluoride) by gas chromatography |
| US11255827B2 (en) | 2015-10-30 | 2022-02-22 | Perkinelmer Health Sciences, Inc. | Thermal gradient chromatography devices and methods of using them |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11255827B2 (en) | 2015-10-30 | 2022-02-22 | Perkinelmer Health Sciences, Inc. | Thermal gradient chromatography devices and methods of using them |
| CN109709247A (en) * | 2019-02-27 | 2019-05-03 | 辽东学院 | A kind of gas chromatograph post case quickly heated |
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| CN111796045A (en) * | 2020-07-13 | 2020-10-20 | 杭州道宇检测技术有限公司 | Chromatographic column heating device for gas chromatograph |
| CN111796045B (en) * | 2020-07-13 | 2022-06-14 | 杭州道宇检测技术有限公司 | Chromatographic column heating device for gas chromatograph |
| CN112034081A (en) * | 2020-09-07 | 2020-12-04 | 浙江安联检测技术服务有限公司 | High-efficient heating gas chromatography device |
| CN112540140A (en) * | 2020-12-16 | 2021-03-23 | 中船重工（邯郸）派瑞特种气体有限公司 | Equipment and method for measuring trace impurities in HF (hydrogen fluoride) by gas chromatography |
| CN112540140B (en) * | 2020-12-16 | 2022-12-27 | 中船(邯郸)派瑞特种气体股份有限公司 | Equipment and method for measuring trace impurities in HF (hydrogen fluoride) by gas chromatography |
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| Publication number | Publication date |
|---|---|
| CN108645943B (en) | 2020-05-05 |
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