CN108872456A - Gas chromatograph column oven and the gas phase chromatographic device for using it - Google Patents
Gas chromatograph column oven and the gas phase chromatographic device for using it Download PDFInfo
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- CN108872456A CN108872456A CN201710757198.1A CN201710757198A CN108872456A CN 108872456 A CN108872456 A CN 108872456A CN 201710757198 A CN201710757198 A CN 201710757198A CN 108872456 A CN108872456 A CN 108872456A
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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
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/30—Control of physical parameters of the fluid carrier of temperature
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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
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Abstract
Even if gas chromatograph of the invention column oven and the scale for also reliably reducing explosion in the case where the imflammable gas that column temperature chamber main body inner product stays is ignited using its gas phase chromatographic device.The column temperature chamber main body of the approximately cuboid shape of chromatographic column is stored without using welding, and but be fitted by multiple sheet-metal components to substantially planar, shape generally L-shaped or substantially Contraband word shape, spiral shell is solid is formed.In addition, the front frame sheet-metal component of substantially border shape is mounted on by the same method on the 1st sheet-metal component of outside in the opening for the front surface being opened and closed with door.Since the intensity along the corner that Y-direction extends, the installation section of front frame sheet-metal component and the 1st sheet-metal component of outside of the left and right upside of column temperature chamber main body is lower than other parts, therefore when explosion causes the air pressure of inner space to increase to a certain degree, it may occur that damaged, fracture deforms and forms opening.Gas can be flowed out by the opening to reduce the scale of explosion.
Description
Technical field
The gas chromatograph use that the present invention relates to one kind to be adjusted to carry out gas chromatograph (GC) with the temperature of chromatographic column
Column oven and the gas phase chromatographic device for using it.
Background technique
In gas phase chromatographic device, gasiform sample is directed into chromatographic column with the flowing of carrier gas, in the sample
By the way that during chromatographic column, the various compounds in the sample are separated in the direction of time.It then, will be from the outlet end of chromatographic column
Sample air out is directed into detector, and compound contained in sample air is sequentially detected in the detector.Chromatographic column
It is contained in the gas chromatograph column oven (hreinafter referred to as " column oven ") to carry out temperature adjusting Nei, is executed in analysis
In the process, predetermined temperature is maintained for chromatographic column is fixed by the column oven, or according to regulation temperature program with temperature with
The time pass through and rise mode be adjusted.
Above-mentioned column oven is generally formed in the approximately cuboid shape that can accommodate the inner space of size of chromatographic column
The column temperature chamber of shape inside setting heater and fan form, be arranged in the front surface of the column temperature chamber to pick and place chromatography
The biggish opening of column is opened and closed by laterally opened door.In general, being configured to improve the performance of temperature adjusting in door locking
Column oven room keeps high-air-tightness under state.
In gas phase chromatographic device, use hydrogen as carrier gas sometimes.In addition, in gas phase chromatographic device, sometimes also
It will use the detector that flame ionization ditector (FID) etc. needs hydrogen in the detection.In this case, if chromatographic column
There are bad connection or chromatographic columns, connection utensil with the interconnecting piece of the interconnecting piece of sample introduction part, chromatographic column and test section etc.
Existing defects, breakage, then hydrogen can be leaked out and be accumulated in the column oven room of air-tight state.If this accumulates the hydrogen to get off because coming
Certain reasons such as heat, the electrostatic of self-heating device and be ignited, then can explode, thus in the presence of the member of formation for making the column oven
The danger dispersed towards surrounding (with reference to non-patent literature 1 etc.).It is taken as the column oven of the countermeasure of this explosion of mitigation, in the past
There is the column oven recorded in patent document 1.
(a) of Fig. 7 is the outline horizontal cross for the column oven recorded in patent document 1 (wherein, in order to avoid attached drawing change
Must be many and diverse, a part of element is indicated with end face).In the figure, the side is front surface downward, upward the side
For the back side.
The column oven has column temperature chamber main body 200 and door 213, and the column temperature chamber main body 200 is approximately cuboid shape
Shape is the state of entire front surface opened, and the front surface opening of 213 pairs of the door column temperature chamber main body 200 is opened and closed, when
When door 213 is blocked, the inner space 218 to accommodate chromatographic column is just formed.Column temperature chamber main body 200 in (a) of Fig. 7 by seeing
Obtained right side face the wall and meditate 201, left side face the wall and meditate 202, back face wall 203 and underside wall 204 and Fig. 7 (a) in the top wall that does not occur
It constitutes.Each wall is to clamp 3-tier architecture made of the heat-insulating materials such as glass wool using 2 pieces of metal plates.Overleaf it is equipped on wall 203
Motor 210 is fixed with fan 211 in the shaft for the motor 210 for extending to inner space 218.In addition, to surround the fan
211 mode configures having heaters 212.
Door 213 includes door main body 2131, the inside door 2132 that is made of heat-insulating materials such as glass wools and by the inside door 2132
The spring 2133 pressed relative to door main body 2131 towards 218 side of inner space.Door main body 2131 is with vertically ((a) of Fig. 7
In be the direction orthogonal with paper) extend door-hinge 214 be that the mode of center turn freely is fixed on column temperature chamber main body 200
On (for stringent face the wall and meditate for left side 202).As shown in (a) of Fig. 7, when door 213 is closed, the pressure on top surface of spring 2133 makes interior
Door 2132 is pushed towards the rear.Inside door 2132 is pushed in the leading edge potion of side walls 201,202 etc. up and down, door 213 as a result,
Column temperature chamber main body 200 is substantially closed.
In the right part (the namely end of the opposite side of door-hinge 214) of door main body 2131, with what is extended in the vertical direction
The mode rotated freely centered on bolt axis 216 is equipped with the bolt 215 of shape generally L-shaped.In addition, the hook with the bolt 215
The hook of the shape of shape portion engaging determine portion 217 and is fixed on column temperature chamber main body 200 (be for stringent right side face the wall and meditate 201).Though not
Diagram, but bolt 215 is pressed in the counterclockwise direction in Fig. 7 (a) by spring, as shown in (a) of Fig. 7, in door
In the state that 213 are closed in a manner of being latched the front surface opening of column oven room main body 200, the crook of bolt 215 is fastened on
Hook is determined in portion 217, so that door 213 is reliably held at blocking.In the case where opening door 213, user, which holds, to be in
The handle (not shown) of the front surface of door 213.Then, the crook of bolt 215 determines the engaging temporary release in portion 217 with hook, makes
Door 213 can be opened forward by obtaining user.
As described above, door 213 be blocked and make inner space 218 be substantially air-tight state when, if hydrogen accumulates
It in the inner space 218 and is ignited, then can explode.Then, in inner space 218, air pressure is steeply risen.Institute as above
It states, inside door 2132 is pressed towards the rear by spring 2133, but since the air pressure steeply risen is better than the press of spring 2133
Power, therefore, as Fig. 7 (b) in shown in hollow arrow, inside door 2132 is pushed and close towards door main body 2131 by air pressure.Then, exist
Inside door 2132 and left and right sides face the wall and meditate 201,202 leading edge potion between form gap, gas is by the gap from inner space 218
It sprays.That is, carrying out a kind of exhaust by the gap.The degree of the rising of the air pressure of inner space 218 is mitigated as a result,
So as to reduce the scale of explosion.
However, there are the following problems for the previous column oven.
As described above, being sharply discharged in gas by face the wall and meditate 201,202 gap of leading edge potion of inside door 2132 and left and right sides
When, the impetus of the air-flow is extremely violent.When the air-flow is hit to the bolt 215 of the right end of door 213, which will receive Fig. 7's
(b) the biggish power in direction shown in arrow in, thus the case where being loosened there are crook engaging with hook determines portion 217.Such one
Come, door 213 can be applied to entire inside door 2132 air pressure push and burst open, thus in the presence of be located at this 213 before
The danger such as user's contact.
In addition, saying, in previous column oven, although a part of gas can be faced the wall and meditated by inside door 2132 with left and right sides
201, the gap outflow of 202 leading edge potion, but its discharge may not be more, and therefore, air pressure of the meeting in inner space 218 is suitable
It explodes in the state of height.As a result, the scale of explosion is often large.Therefore, the component for constituting column oven can be suddenly towards surrounding
It disperses, thus the case where in the presence of personal injury, damage to property is caused because of such flying.
【Existing technical literature】
【Patent document】
【Patent document 1】Japanese Patent Laid-Open 2016-217912 bulletin
【Patent document 2】Japanese Patent Laid-Open 2002-14087 bulletin (paragraph [0003])
【Non-patent literature】
【Non-patent literature 1】" when safe handling (points for attention in use) 6. gas chromatographs about hydrogen are run
The danger to be imagined ", Shimadzu Scisakusho Ltd, [online], [retrieval on April 28th, 2017], network address < URL：
http://www.an.shimadzu.co.jp/gc/support/faq/bombe6.htm > (" water element ガ ス safe handling
Pay attention on To つ い て (Qu Xi) 6. ガ ス Network ロ マ ト グ ラ フ ?Rotating Time To scenario さ れ Ru danger Insurance ", Zhu formula Hui She Island saliva
System makees institute, [online], [retrieval in Heisei on April 28th, 29], イ Application タ ー ネ ッ ト < URL：http://
Www.an.shimadzu.co.jp/gc/support/faq/bombe6.htm >)
Summary of the invention
【Problems to be solved by the invention】
Above-mentioned explosion is as caused by inappropriate use of device, the defect of device, therefore, although including column oven
It is the thing having no idea that breakage, which occurs, for device itself, but just for the damage to property for the facility for being provided with the device, personnel's wound
For evil, certainly more satisfactory is to be inhibited as far as possible.
The present invention is to form in order to solve this problem, its purpose is to provide following gas chromatograph column oven and
Use its gas phase chromatographic device：Even if being ignited in imflammable gas such as the hydrogen that the inner space inner product of column oven stays
And in the case where exploding, it can also inhibit the scale of the explosion and reliably mitigate personal injury, damage to property.
【Technical means to solve problem】
In general, the column temperature chamber main body of gas chromatograph column oven is by welding to sheet metals such as stainless steel plates
It connects and is assembled into box-like (referenced patent document 2).Due to being this structure, column temperature chamber main body is with high airtightness, heavily fortified point
Solidity, even if for example, having the advantages of being also unlikely to deform from outside force.But, on occurring in the inner space of column temperature chamber
In the case where stating such explosion, if the airtightness of column temperature chamber main body, robustness are higher, air pressure, which becomes quite high, can just be sent out
It is raw to destroy, when air pressure rises to over the degree of damage-resistant pressure of column temperature chamber, huge explosion will occur.That is, for by column
For the caused explosion of igniting for accumulating the imflammable gas to get off in incubator room, high airtightness, the heavily fortified point of column temperature chamber main body
Solidity, which is likely to become, leads to bigger aggrieved factor.
Usually as preventing one of the equipment deceived for having explosion inside deduster, coal bunker etc., countermeasure of explosion of container,
Carry out the setting for having Vented explosion mouth (explosive mouth).Vented explosion mouth is following device：Under preset pressure itself
It can rupture, as a result, discharge rapidly the abnormal pressure of equipment, the inside of container generated by explosion to outside, to prevent
The breakage of the equipment, container is in possible trouble, or mitigates damaged degree.Present inventor has obtained in gas chromatograph column oven
In this explosion-proof method also effectively this opinion.Also, present inventor expects following content and completes the present invention：It is set as making column temperature
The intensity of a part of chamber main body is deliberately weaker than the structure of other parts, in the air pressure at the explosion initial stage also relatively low stage
Breakage just occurs for the relatively weak part-structure, and air pressure is dissipated to external opening to be formed, thus inhibits explosion
Scale.
That is, gas chromatograph column oven of the invention made of to solve the above-mentioned problems have column temperature chamber main body and
Door, the column temperature chamber main body are approximately cuboid shape and front surface opening, preceding table of the door to the column temperature chamber main body
The opening in face is opened and closed, and the inner space for accommodating chromatographic column, the gas phase color are formed by the column temperature chamber main body and the door
Spectrometer column oven is characterized in that,
Right side, left side, bottom surface, top surface and this five, the back side in the column temperature chamber main body, in addition to front surface
Wall surface is using at least 2 pieces in the sheet-metal component or generally flat gold after substantially Contraband font or bending generally L-shaped
Belong to board member and formed,
By different metal board member be in each other approximate right angle abut formed two adjacent surfaces between corner at least
One position is set as releasing with interconnecting piece, and described release with interconnecting piece is to connect two metals than welding low method by intensity
Board member forms,
When air pressure in inner space increases the degree of regulation or more, described release can be detached from interconnecting piece, be broken, is damaged
Or deformation, the opening functioned as Vented explosion mouth is consequently formed.
Using gas chromatograph of the invention with column oven to carry out gas chromatographic analysis when, accommodate the column of chromatographic column
The front surface opening of incubator room main body is blocked by door.When for some reason and causing the imflammable gas such as hydrogen to accumulate is becoming big
In the inner space of fine and close closed state and when being ignited by heat, electrostatic etc. from heater, it may occur that explode and lead to internal sky
Between air pressure steeply rise.When air pressure is increased to a certain degree, which can make the metal plate structure released at interconnecting piece
Part disengaging, fracture, damaged or deformation, are consequently formed opening.Then, gas is flowed out by the opening from inner space, therefore
The air pressure sharply of inner space, which rises, to be mitigated.As a result, explosion terminates under lesser scale, even if in column temperature chamber master
There are also the chromatogram arrangement main bodys of interior dress column temperature chamber in components such as the indoor heater of column oven, fans for body, door or configuration
Various components are damaged and in the case where dispersing, also can sufficiently inhibit its degree.
In gas chromatograph column oven of the invention, can be used various methods as it is above-mentioned " intensity than weld it is low
Method ".A sheet-metal component is inserted into another metal plate in the convex piece that approximate right angle bends and formed for example, can enumerate
One sheet-metal component is screwed in another metal in the convex piece that approximate right angle bends and formed by the method for the insertion opening of component
Method etc. on board member.In the latter case, preferably make the width for being subject to the solid convex piece of spiral shell smaller.As a result, in air pressure liter
When up to a certain degree, at this pressure, not only convex sector-meeting deforms and makes toner screw, and convex piece is also easily broken off.
In gas chromatograph column oven of the invention, in column temperature chamber main body, right side, left side, bottom surface, top
Face and this five wall surfaces of the back side can be set to accompany absolutely between the metal plate and the metal plate in outside this 2 pieces of metal plates of inside
3-tier architecture made of hot material.
In this case, it configures in right side, left side, the bottom surface, top surface of the inside (inner space side) of heat-insulating material
And this five wall surfaces of the back side are using at least 2 pieces in sheet-metal component after substantially Contraband font or bending generally L-shaped or big
It causes flat sheet-metal component and is formed, on the other hand, configured in right side, the left side in the outside (exterior side) of heat-insulating material
This five wall surfaces of face, bottom surface, top surface and the back side are to be in using other at least 2 pieces other than above-mentioned at least 2 pieces of sheet-metal components
Sheet-metal component or generally flat sheet-metal component substantially after Contraband font or bending generally L-shaped and formed.At this point,
Preferably set be constructed as follows: with by right side, left side, bottom surface and top surface respectively towards the inner and outer of front surface
Metal plate end edge portion between the mode blocked, the sheet-metal component of substantially frame shape is mounted on to form right side, a left side
On the sheet-metal component of side, bottom surface and top surface, also, in door locking, the gold of the inner face of this and the substantially frame shape
Belong to board member contiguity.
Also, pass through the substantially sheet-metal component of frame shape and the gold for forming right side, left side, bottom surface and top surface
Belong to board member to be also preferably set as releasing in the corner between the two adjacent surfaces that approximate right angle abuts and is formed with interconnecting piece, it is described to release
It is to be formed by intensity than welding low method two sheet-metal components of connection with interconnecting piece.
In addition, being preferably set to constitute as follows in gas chromatograph column oven of the invention：Described in substantially Contraband word
When the bending part of sheet-metal component after shape or bending generally L-shaped is the corner, it is provided with hole threadiness portion, the hole is linear
Portion is to be intermittently formed aperture along the crooked place to form.
Above-mentioned hole threadiness portion is easily broken off than common bending part.Therefore, in above-mentioned preferably comprise, when in inner space
When accumulating the imflammable gas to get off and being ignited and explode, the air pressure of inner space is caused to be increased to a certain degree, the pressure
Power in addition to can make it is above-mentioned release be broken with interconnecting piece other than, hole threadiness portion can also be broken, so that clamping this
The metal plate of fracture location is easily deformed.Biggish opening is formed as a result, so that gas is flowed by the opening from inner space
Out, therefore it can further mitigate the air pressure sharply of inner space and rise.
In addition, preferably setting and being constructed as follows in gas chromatograph column oven of the invention：It will be in addition to the bending part
All corners be set as releasing with interconnecting piece, described release with interconnecting piece is to connect two gold than welding low method by intensity
Belong to board member to form.
Final maquila is built in from using ground by gas chromatograph column oven because outer dimension is larger, therefore often
Area is closer local (country), and the part produced in other basis factories is transported to final maquila, this most
Finished goods is assembled into whole maquila.It, must in the previous structure of column temperature chamber main body for assembling box-like by welding
Welding equipment must be introduced in final maquila, or the box-like component conveying produced in basic factory is assembled to final
Factory.In the previous case, welding equipment Expenses Cost.On the other hand, in the latter case, the internal box-like for cavity
The transportation cost of component is high.
In contrast, in the gas chromatograph column oven of above-mentioned composition of the invention, in assembling column temperature chamber main body
Manufacturing process in do not need weld job, can by being fitted into multiple sheet-metal components, spiral shell assemble column oven admittedly
Room main body.Therefore, welding equipment is introduced without in final maquila.In addition, need not be by box-like component conveying to final group
Factory is filled, as long as by the substantially sheet-metal component of Contraband font, in the sheet-metal component after bending generally L-shaped or substantially flat
Component conveying as the quantity more than box-like component can be transported under sheet-metal component of plate etc., every same volume to final
Maquila.Therefore, the advantages of transportation cost of the cost and component that have manufacturing equipment can reduce.
In addition, preferably setting and being constructed as follows in gas chromatograph column oven of the invention：It is lower than welding by intensity
Method connect made of two sheet-metal components it is described release at least part of interconnecting piece two sheet-metal components it
Between have clearance.
Even if according to this constitution, in the case where each sheet-metal component stretches because of heat, above-mentioned two sheet-metal component it
Between clearance the stretching absorbance can also be fallen, therefore, can be avoided unreasonable load and be applied to coupling part.It will not produce as a result,
The raw cracking that will can be generated in previous composition that sheet-metal component is connected to each other by welding, so as to reach high-durability.
In addition, in this five walls of the right side, left side of column temperature chamber main body as described above, bottom surface, top surface and the back side
In the case that face is respectively 3-tier architecture, when using column oven, it is (such as maximum that the metal plate of inside reaches very high temperature sometimes
450 DEG C or so), in contrast, the metal plate in outside is since the metal plate through heat-insulating material and inside separates, temperature is most
Greatly 150 DEG C or so.Therefore, the temperature difference across the metal plate of the metal plate and outside of the inside of heat-insulating material is sometimes very big.?
With by right side, left side, bottom surface and top surface respectively towards the inner and outer of front surface metal plate end edge portion it
Between the mode blocked, in the installation substantially composition of the sheet-metal component of frame shape, in the metal plate structure of the substantially frame shape
The inner and outer of part can generate the biggish temperature difference, especially can be concentrated in the corner of the quadrangle of inside by the power that thermal expansion generates,
Go down so as to cause fatigue rupture development, is easy to produce cracking.
Especially in previous gas chromatograph column oven, in order to which the sheet-metal component of substantially frame shape is welded
On the metal plate of the inside of the right side, left side, bottom surface and the top surface that form column temperature chamber main body, to carry out substantially frame
The edge of the inside of the sheet-metal component of shape is in the processing of approximate right angle bending, and at this moment, shape can be distinguished in the corner of quadrangle
At escape (notch).As described above, the flexible of sheet-metal component come with the biggish temperature difference of inner and outer is produced
Raw stress can be concentrated in the escape, therefore be easy to generate cracking from the part of the escape.
Therefore, it in gas chromatograph column oven of the invention, preferably sets and is constructed as follows：In the substantially frame shape
Sheet-metal component on straight part towards four sides of inside bent toward the rear side in approximate right angle, adjacent any 2 side
Corner between straight part is substantially arc-shaped under forward sight, and the straight line for corner two sides of ining succession is formed with by deep-draw processing
The bending part in shape portion and the rib extended toward the rear side.
Even if according to this constitution, the biggish temperature difference of the inner and outer in the presence of the sheet-metal component by substantially frame shape
Caused metal plate stretches, and flexible generated stress will not concentrate on the corner of quadrangle but can moderately disperse.Cause
This, gas chromatograph column oven different from the past, the sheet-metal component of substantially frame shape is not likely to produce cracking, so as to
Enough reach high-durability.
Furthermore the bending part and column temperature of the substantially straight part of the sheet-metal component of frame shape are not connected by welding
The right side of chamber main body, left side, bottom surface and top surface inside sheet-metal component, such as be set as only pressing bending part
On the one hand structure on the sheet-metal component of the inside of right side, left side, bottom surface and top surface, can ensure that air-tightness as a result,
On the other hand the flexible of the sheet-metal component as caused by temperature change can be absorbed.
In addition, gas phase chromatographic device of the invention is characterized in that, has the gas chromatograph column temperature of aforementioned present invention
Case, the chromatographic column being contained in the inner space of the column oven, the sample introduction part being connect with the arrival end of the chromatographic column, with
And the test section being connect with the outlet end of the chromatographic column.
Herein, the detection mode of test section is not particularly limited, and usually can be used each used in gas phase chromatographic device
The test section of kind mode.In addition, sample introduction part is same, the mode that sample imports is unlimited, can will be in sample evaporation chamber
Sample after interior gasification is directed into chromatographic column, the gasiform sample collected by Head space is directed into chromatographic column etc..
【The effect of invention】
Gas chromatograph column oven according to the present invention and the gas phase chromatographic device for using it, even if in column temperature chamber
The imflammable gas such as the hydrogen that stays of inner space inner product be ignited and explode in the case where, with existing apparatus phase
Than also can reliably mitigate the degree of the explosion.It for example can be avoided door as a result, and burst open this case, to prevent this
Door such as bumps against user and causes the user injured at the accidents.In addition, being able to suppress explosion time structure by the degree for mitigating explosion
It disperses at the various components of the column oven, the various components of gas phase chromatographic device main body for being provided with the column oven etc. towards surrounding
Degree.
Detailed description of the invention
Fig. 1 is the gas phase chromatographic device main body of the built-in gas chromatograph column oven as one embodiment of the invention
The stereoscopic figure of door open state.
Fig. 2 is the perspective view of the column temperature chamber main body of the gas chromatograph column oven of the present embodiment.
Fig. 3 is the column temperature chamber main body of the gas chromatograph column oven of the present embodiment from the direction different from Fig. 2
Perspective view.
Fig. 4 is the figure for indicating the package assembly of the column temperature chamber main body of gas chromatograph column oven of the present embodiment.
Fig. 5 is to illustrate that there is a situation where explode in inner space in the gas chromatograph column oven of the present embodiment
Under column temperature chamber main body deformation state figure.
Fig. 6 is the schematic configuration diagram of the gas phase chromatographic device of the present embodiment.
Fig. 7 be previous gas chromatograph in the state that door is latched in column oven outline horizontal cross (a),
And indicate the approximate horizontal cross-sectional view (b) in part of the state after just exploding in inner space.
Specific embodiment
In the following, with reference to attached drawing, to gas chromatograph column oven of the invention and its gas phase chromatographic device is used
One embodiment is illustrated.
Fig. 6 is the schematic configuration diagram of the gas phase chromatographic device of the present embodiment.
The column temperature chamber main body 10 of gas chromatograph column oven described later is accommodated in gas phase chromatographic device main body 4
In, sample evaporation chamber 1 and detector 6 are installed in the gas phase chromatographic device main body 4.It is empty in the inside of column temperature chamber main body 10
Between the thin chromatographic columns 5 of hairiness are accommodated in 11, the arrival end of the capillary chromatograph 5 is connect with sample evaporation chamber 1, outlet end and detector
6 connections.The mode of detector 6 is not particularly limited, for example, flame ionization ditector (FID).
The carrier gas appropriate such as hydrogen, helium is supplied to sample evaporation chamber 1 by carrier gas flow path 2.When sample evaporation chamber 1
When being heated to temperature appropriate and dripping micro liquor sample from syringe 3, which can gasify in a short time, thus
Capillary chromatograph 5 is directed into the flowing of carrier gas.Furthermore in the case where shunting injection method, pass through shunting (not shown)
Most of gas is expelled to outside out of sample evaporation chamber 1 by flow path, and a part of gas is only directed into capillary chromatograph 5.
Column oven is for example controlled according to the temperature program of regulation by temperature as time goes by and in a manner of rising,
Sample air is by the way that during capillary chromatograph 5, the compound in the sample air is separated in the direction of time, to sequentially lead
Enter to detector 6.The generation of detector 6 is corresponding with the amount of the compound imported to detect signal, and is input to letter (not shown)
Number processing unit.In signal processing part, chromatogram is made according to detection signal obtained.
In the gas phase chromatographic device, such as when the connection of capillary chromatograph 5 and sample evaporation chamber 1 is inappropriate, it is used as
The hydrogen of carrier gas can accumulate in inner space 11, if causing the hydrogen to be ignited because of certain factors, set off an explosion it
Anxiety.Even if column temperature chamber main body 10 becomes by a manner of the degree for occurring also mitigate in the case where such explosion the explosion
Characteristic is constituted.Then, its characteristic composition in column temperature chamber main body 10 is illustrated.
Fig. 1 is the door open state of the gas phase chromatographic device main body 4 of the gas chromatograph column oven of built-in the present embodiment
Stereoscopic figure, Fig. 2 and Fig. 3 are the perspective view of column temperature chamber main body 10, and Fig. 4 be the assembling knot of expression column temperature chamber main body 10
The figure of structure, Fig. 5 are to illustrate the deformation state of the column temperature chamber main body 10 in the case where exploding in inner space 11
Figure.For convenience of description, in FIG. 1 to FIG. 4, the width direction of column temperature chamber main body 10 is set as X-direction, will be perpendicular to X-direction
Depth direction is set as Y-direction, will be set as Z-direction both perpendicular to the short transverse of x-direction and y-direction.
As shown in Figure 1, gas phase chromatographic device main body 4 has the shell 41 of approximately cuboid shape, before the shell 41
Surface right is provided with the operation portion 42 for being equipped with operation button, display panel.Have in the inner containment of the shell 41 almost entire
The front surface opening of the column temperature chamber main body 10 that front surface is all open, column temperature chamber main body 10 is opened and closed freely by door 12.
As shown in Fig. 2, column temperature chamber main body 10 is approximately cuboid shape, by right side wall portion 10a, left side wall portion
10b, top surface wall portion 10c, bottom surface wall portion 10d and back side wall portion 10e are constituted.Wall portion 10a, left side wall portion 10b, top in right side
Face the wall and meditate portion 10c and bottom surface wall portion 10d preceding acies be equipped with when door 12 has been latched with the inner face peripheral part of this 12 contiguity
The preceding frame portion 10f of border shape.Five faces, that is, right side wall portion 10a, left side wall portion other than the front surface of column temperature chamber main body 10
10b, top surface wall portion 10c, bottom surface wall portion 10d and back side wall portion 10e are 2 pieces of metal plates in inner and outer (wherein, at this
Example in, the metal plate in the outside of bottom surface wall portion 10d essentially becomes a part of shell 41) between accompany the heat insulating materials such as glass wool
3-tier architecture made of material.
As shown in figure 4, the main member for constituting column temperature chamber main body 10 is the 1st metal of inside of forward sight substantially Contraband word shape
The 2nd sheet-metal component 102 of inside of the substantially inverted L-shaped shape of board member 101, side view, the 1st gold medal of outside for overlooking substantially Contraband word shape
Though belong to board member 103, not in Fig. 4 in diagram but Fig. 2 or Fig. 3 the coating metal for example on aluminium foil, sheet glass seen and
Though the 2nd metal plate of outside seen in sheet material obtained etc. i.e. outside foil member 104, the same diagram not in Fig. 4 but Fig. 2
The front frame sheet-metal component 106 of component 105 and substantially frame shape.
The 1st sheet-metal component 101 of inside is formed in right side wall portion 10a, bottom surface wall portion 10d and left side wall portion 10b
Inner surface 1 piece of sheet-metal component.The 2nd sheet-metal component 102 of inside is formed in top surface wall portion 10c and back side wall portion 10e
Inner surface 1 piece of sheet-metal component.The 1st sheet-metal component 103 of outside be to be formed right side wall portion 10a, back side wall portion 10e and
Outer 1 to face the wall and meditate piece sheet-metal component in the wall portion 10b of left side.In addition, outside foil member 104 is to cover bottom surface wall portion
The mode in the entire outside of 10d, top surface wall portion 10c and the heat-insulating material in wall portion 10a, 10b of two sides, which is rolled up, to be set, above-mentioned outside the
1 sheet-metal component 103 is mounted on the outside of the outside foil member 104.In addition, the 2nd sheet-metal component 105 of outside is installation
Component in the outside foil member 104 at the wall portion 10c of top surface.Furthermore in Fig. 2, Fig. 3, each component will be marked in Fig. 4
Symbol be shown in bracket ().
It is the seam for connecting sheet-metal component by welding in previous column oven, column temperature chamber master is consequently formed
Body, the inner wall for especially facing inner space 11.In contrast, in the column oven of the present embodiment, the 1st sheet-metal component of inside
101 with the seam of the 2nd sheet-metal component 102 of inside --- for example pass through the upper acies and top wall of two sides wall portion 10a, 10b
Two acies of left and right of portion 10c is abutted in approximate right angle and the corner that is formed is by the chimeric and spiral shell composition to be fixed to each other admittedly.
Specifically, as shown in figure 4, corresponding to the portion of two sides wall portion 10a, 10b on the 1st sheet-metal component 101 of inside
The upper acies divided is formed with overlapping portion 1011 by inwards bending in approximate right angle, the position shape appropriate in the bending section
At there is insert port 1012 elongated in the Y direction.On the other hand, top surface wall portion is corresponded on the 2nd sheet-metal component 102 of inside
The two sides acies of the part of 10c is formed with the tab portion extended towards two sides in ligule in the position for corresponding to insert port 1012
1021.By the way that this multiple tab portion 1021 is inserted into corresponding insert port 1012 respectively, so that overlapping portion 1011 and inside the 2nd
Touch (part shown in the symbol A in Fig. 2) in the part corresponding to top surface wall portion 10c of sheet-metal component 102.
In addition, as shown in Figure 3, Figure 4, on the outside corresponding to two sides wall portion 10a, 10b on the 1st sheet-metal component 103
Partial upper acies is formed in Extendible flake 1031 generally L-shaped made of approximate right angle outwardly lateral bending folding.The Extendible flake
1031 are screwed on the 2nd sheet-metal component 105 of outside.
In addition, fixation of the front frame sheet-metal component 106 on the outside on the 1st sheet-metal component 103 is substantially also to pass through gold
What the insertion and spiral shell for belonging to board member carried out admittedly.That is, as shown in Figure 2 to 4, the substantially front frame sheet-metal component 106 of border shape
The left and right sides be toward the rear side in approximate right angle bending, also, be formed with and further prolong towards the rear in ligule from the bending part
It stretches and the different multiple tab portions 1062 of its development length.On the other hand, correspond on the 1st sheet-metal component 103 on the outside
The preceding acies of the part of two sides wall portion 10a, 10b is formed in the position for three tab portions 1062 for corresponding to center side in Z
Elongated insert port 1032 on direction.Three tab portions 1062 of the center side of front frame sheet-metal component 106 are by being inserted into this
Insert port 1032 and fixed, in turn, two tab portions 1062 up and down of front frame sheet-metal component 106 be screwed in outside the 1st
On sheet-metal component 103.
Front frame sheet-metal component 106 is not used with the 1st sheet-metal component 101 of inside and the 2nd sheet-metal component 102 of inside
Insertion, spiral shell are solid, and make its contiguity that seam between the two be made not generate gap merely by metal plate is pushed.That is, front frame
The corner 1061 of the quadrangle of the inside of sheet-metal component 106 is the shape of the radian with substantially arc-shaped.The front frame metal plate
Straight part on component 106 towards four sides of inside bends toward the rear side in approximate right angle and becomes overlapping portion 1063, and
The corner 1061 of quadrangle is also formed with the overlapping portion 1063 for its two sides of continuously ining succession and the extension 1064 that extends towards the rear.This
Kind can be added in the corner of curved shape in extension 1064 made of approximate right angle bending by the deep-draw based on punch process
Work and formed well.Front frame sheet-metal component 106 is being embedded in the 1st sheet-metal component 101 of inside and the 2nd metal plate of inside
When component 102, before overlapping portion 1063 can be pushed into the 1st sheet-metal component 10l of inside and the 2nd sheet-metal component 102 of inside
The inside in acies portion, hardly generates gap between the two.In addition, forming extension by the corner 1061 in quadrangle
1064, there are also advantages as described later.
In addition, as shown in Figure 3, Figure 4, on the outside on the 1st sheet-metal component 103, corresponding to two sides wall portion 10a, 10b
Part and bending part corresponding to the approximate right angle between the part of back side wall portion 10e, it is left with the 1/4~1/3 of entire length
Right length is intermittently equipped with aperture 1033 respectively from upper end and lower end (with reference to the symbol D in Fig. 3).
Furthermore the part on the 1st sheet-metal component 101 of inside corresponding to two sides wall portion 10a, 10b is formed with circle
The opening of shape, oblong-shaped, these openings are occluded from 11 side of inner space by another sheet-metal component 107.
In the gas phase chromatographic device for stating the present embodiment of the column temperature chamber main body 10 of composition in use, when hydrogen accumulates
When door 12 is closed and becomes in the substantially inner space 11 of air-tight state and ignited by heat, electrostatic etc. from heater, meeting
It explodes.Then, in inner space 11, air pressure is steeply risen.As described above, passing through metal plate in column temperature chamber main body 10
Air pressure of the position of the insertion of component and fixation in inner space 11 is easy to loosen when increasing to a certain degree.Further, since passing through
The mechanical strength that tab portion 1021 of narrower width etc. is subject to the solid part of spiral shell is lower, therefore, when the air pressure liter of inner space 11
It is high to a certain degree when, it may occur that fracture.In addition, in the part for being intermittently formed aperture 1033, between adjacent apertures 1033
Very thin linking part is easily broken off.
That is, in column temperature chamber main body 10, the planar portions of the intensity in the corner of structure as described above than sheet-metal component
Low, therefore, when the air pressure of inner space 11 increases to a certain degree, meeting is damaged in advance, fracture, destroys, to form opening.One
Denier forms opening, and gas will be flowed out from the opening without a break, and therefore, sheet-metal component can deform, so that opening further expansion.
Specifically, sheet-metal component deforms respectively and forms multiple biggish openings as shown in single dotted broken line in Fig. 5.The opening conduct
Vented explosion mouth and play a role, gas by the opening from inner space 11 be discharged, the air pressure in inner space 11 as a result,
Rising mitigated, to reduce the scale of explosion.As a result, it is possible to inhibit to be not only to constitute the also structure of column temperature chamber main body 10
At the degree that the various components of gas phase chromatographic device main body 4 disperse towards surrounding, so as to mitigate personal injury, damage to property.
In addition, as described above, a large amount of corners of column temperature chamber main body 10 are to pass through metal in the column oven of the present embodiment
The insertion of plate is embedded in fix.At such position, there are clearance between the sheet-metal component that is in contact, therefore, even if because
Heat and cause sheet-metal component flexible, biggish load will not be applied to fixed part.Thereby, it is possible to prevent sheet-metal component
Generate cracking.
Especially when heating up analysis, 450 DEG C or so of height is reached in face of the sheet-metal component most conference of inner space 11
Temperature, in contrast, the maximum temperature of the sheet-metal component in outside all can only rise to 150 DEG C or so.Therefore, across heat-insulating material
Inside sheet-metal component and outside sheet-metal component the temperature difference it is sometimes very big.Due to front frame sheet-metal component 106 with it is interior
The sheet-metal component of side and two side of the sheet-metal component contact in outside, therefore, according to the difference at position, stretch as caused by temperature
The difference of contracting is larger.It is easy to concentrate on the corner of the quadrangle of the inside of front frame sheet-metal component 106 by the flexible stress generated
1061, and in the column oven of the present embodiment, make the corner 1061 that there is the radian of substantially arc-shaped, and formed on the inside of it
Have in the curved extension 1064 of approximate right angle.Stress is not easy to concentrate on corner 1061 as a result, broken by fatigue so as to mitigate
The generation being cracked caused by bad.
In addition, welding is not used in the assembling of column temperature chamber main body 10, uses screw in the column oven of the present embodiment
The simple tool such as knife can be assembled.In the case where needing welding sequence during manufacturing, due to quasi- in finally assembling place
Therefore standby welding equipment more Expenses Cost will usually be welded and the component conveying made is to final in factory
Place is assembled to be assembled.However, in this case, the outer dimension of component is larger, therefore it is huge to transport required cost.
In contrast, the main member for constituting column temperature chamber main body 10 is tabular, L in the column oven of the present embodiment
The sheet-metal component of word shape or Contraband word shape can transport the component more than box-like component with same volume.As a result, also
The advantages of can reduce transportation cost.
Furthermore above-described embodiment is an example of the invention, takes the circumstances into consideration to be deformed in the range of spirit of the invention, repair
Just, additional etc. is naturally also to include in the claim of the application.
Symbol description
10 column temperature chamber main bodys
The right side 10a wall portion
The left side 10b wall portion
The top surface 10c wall portion
The bottom surface 10d wall portion
The back side 10e wall portion
Frame portion before 10f
101 the 1st sheet-metal components of inside
1011 overlapping portions
1012 insert ports
102 the 2nd sheet-metal components of inside
1021 tab portions
103 the 1st sheet-metal components of outside
1031 Extendible flakes
1032 insert ports
1033 apertures
104 outside foil members
105 the 2nd sheet-metal components of outside
106 front frame sheet-metal components
1061 corners
1062 tab portions
1063 overlapping portions
1064 extensions
107 sheet-metal components
11 inner spaces
12
1 sample evaporation chamber
2 carrier gas flow paths
3 syringes
4 gas phase chromatographic device main bodys
41 shells
42 operation portions
5 capillary chromatographs
6 detectors.
Claims (7)
1. a kind of gas chromatograph column oven, has column temperature chamber main body and door, the column temperature chamber main body is substantially long
Cube shape and front surface opening, the opening of the front surface of the column temperature chamber main body is opened and closed in the door, by the column temperature
Chamber main body and the door form the inner space for accommodating chromatographic column, which is characterized in that,
In the column temperature chamber main body, right side, left side, bottom surface, top surface and this five faces of the back side in addition to front surface
Wall surface is using at least 2 pieces in the sheet-metal component or generally flat gold after substantially Contraband font or bending generally L-shaped
Belong to board member and formed,
It is each other at least one of the corner between the two adjacent surfaces of approximate right angle abutting formation by different metal board member
Position is set as releasing with interconnecting piece, and described release with interconnecting piece is to connect two metal plate structures than welding low method by intensity
Part forms,
When air pressure in inner space increases the degree of regulation or more, described release can be detached from interconnecting piece, be broken, is damaged or become
The opening to play a role as Vented explosion mouth is consequently formed in shape.
2. gas chromatograph column oven according to claim 1, which is characterized in that
In the column temperature chamber main body, the wall surface in this five faces of right side, left side, bottom surface, top surface and the back side respectively exists
3-tier architecture made of heat-insulating material is accompanied between the metal plate of inside and the metal plate in outside, will right side, left side,
It, will substantially side respectively towards the mode blocked between the end edge portion of the metal plate of the inner and outer of front surface on bottom surface and top surface
The sheet-metal component of frame shape is mounted on the sheet-metal component to form right side, left side, bottom surface and top surface, will be big by this
The sheet-metal component of frame shape is caused to support with the sheet-metal component for forming right side, left side, bottom surface and top surface in approximate right angle
It connects and the corner between the two adjacent surfaces that are formed is set as releasing with interconnecting piece, described release with interconnecting piece is by intensity than welding
Low method connects two sheet-metal components and forms.
3. gas chromatograph column oven according to claim 1 or 2, which is characterized in that
When the bending part in the sheet-metal component after substantially Contraband font or bending generally L-shaped is the corner, setting
There is hole threadiness portion, hole threadiness portion is to be intermittently formed aperture along the crooked place to form.
4. gas chromatograph column oven according to claim 1 or 2, which is characterized in that
All corners in addition to the bending part are set as releasing with interconnecting piece, described release with interconnecting piece is by intensity ratio
Low method two sheet-metal components of connection are welded to form.
5. gas chromatograph column oven according to claim 4, which is characterized in that
At least one to release with interconnecting piece made of two sheet-metal components is connected than welding low method by intensity
Being divided between two sheet-metal components has clearance.
6. gas chromatograph column oven according to claim 2, which is characterized in that
On the sheet-metal component of the substantially frame shape towards inside four sides straight part in approximate right angle towards the rear
Lateral bending is rolled over, and the corner between the straight part on adjacent any 2 side is substantially arc-shaped under forward sight, passes through deep-draw processing shape
The Extendible flake extended toward the rear side at the bending part for the straight part for having corner two sides of continuously ining succession.
7. a kind of gas phase chromatographic device, which is characterized in that
Have according to claim 1~any one of 6 described in gas chromatograph column oven, be contained in the inside of the column oven
Chromatographic column in space, the sample introduction part being connect with the arrival end of the chromatographic column and the outlet end with the chromatographic column
The test section of connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-095325 | 2017-05-12 | ||
| JP2017095325A JP6772953B2 (en) | 2017-05-12 | 2017-05-12 | Gas chromatograph oven and gas chromatograph equipment using it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108872456A true CN108872456A (en) | 2018-11-23 |
| CN108872456B CN108872456B (en) | 2021-05-14 |
Family
ID=64325505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710757198.1A Active CN108872456B (en) | 2017-05-12 | 2017-08-29 | Column oven for gas chromatograph and gas chromatograph apparatus using the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6772953B2 (en) |
| CN (1) | CN108872456B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892192A (en) * | 2021-01-25 | 2022-08-12 | 本田技研工业株式会社 | Hydrogen production apparatus |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11709155B2 (en) | 2017-09-18 | 2023-07-25 | Waters Technologies Corporation | Use of vapor deposition coated flow paths for improved chromatography of metal interacting analytes |
| US11709156B2 (en) | 2017-09-18 | 2023-07-25 | Waters Technologies Corporation | Use of vapor deposition coated flow paths for improved analytical analysis |
| US11918936B2 (en) | 2020-01-17 | 2024-03-05 | Waters Technologies Corporation | Performance and dynamic range for oligonucleotide bioanalysis through reduction of non specific binding |
| JP6896132B1 (en) * | 2020-09-24 | 2021-06-30 | エタックエンジニアリング株式会社 | Reinforcement structure of environmental tester |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2018194300A (en) | 2018-12-06 |
| CN108872456B (en) | 2021-05-14 |
| JP6772953B2 (en) | 2020-10-21 |
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