CN109283271A - A kind of chromatographic column sampling system - Google Patents
A kind of chromatographic column sampling system Download PDFInfo
- Publication number
- CN109283271A CN109283271A CN201811199045.0A CN201811199045A CN109283271A CN 109283271 A CN109283271 A CN 109283271A CN 201811199045 A CN201811199045 A CN 201811199045A CN 109283271 A CN109283271 A CN 109283271A
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- column tube
- column
- sampling system
- sample injector
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- 238000005070 sampling Methods 0.000 title claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 26
- 230000004888 barrier function Effects 0.000 claims description 14
- 238000001179 sorption measurement Methods 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- 238000010304 firing Methods 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 239000010439 graphite Substances 0.000 description 15
- 229910002804 graphite Inorganic materials 0.000 description 15
- 239000007789 gas Substances 0.000 description 13
- 238000004587 chromatography analysis Methods 0.000 description 12
- 239000006199 nebulizer Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 6
- 239000012159 carrier gas Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000011490 mineral wool Substances 0.000 description 3
- 238000010183 spectrum analysis Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides a kind of chromatographic column sampling system, including sample injector, gc column tube and connection unit, connection unit includes the first connector and the second connector, the outlet end of sample injector is arranged in first connector, the sample introduction end of chromatotube is arranged in second connector, first connector and the connection of the second connector buckle-type, and gc column tube is connected to sample injector by the first connector and the second connector.In the prior art, gc column tube with sample injector when connecting, it can be inserted in one section of bushing pipe at the column cap of gc column tube and then cover upper cap nut again, and gc column tube is easy to be bent over when dismantling or connect when with sample injector, the problem of cannot be introduced into gc column tube so as to cause analysis sample gas, chromatographic column sampling system provided by the invention are connected by the first connector and the second connector, it avoids disassembly and is easy bending, thus dismantle inconvenient problem.
Description
Technical field
The present invention relates to analytical equipment production fields, specifically, in particular to a kind of chromatographic column sampling system.
Background technique
Chromatographic column is a kind of core element of gas chromatograph, inside have the substance with centrifugation.Current color
It composes column and only inserts one section of mineral wool in column cap, contacted using the expansion of mineral wool with chromatography column wall and generate friction
Power, mineral wool fixed whereby block chromatograph packing material.But such setting is easy to cause the splash of filler dirty in use
Dye spectrometer component wear chromatographic column, especially operate unconsummate personnel when in use it is easy to forget that removal nebulizer gas pressure and
Chromatographic column is directly extracted from sample injector, pressure can spray filler in column in chromatographic column at this time, cause laboratory accident.
Chromatographic column can be inserted in one section of bushing pipe at column cap and then cover upper cap nut again, in nut when connecting with sample injector
Graphite pads are put into, then tightening nuts are connect with chromatograph.Different shaped may require that different samples when carrying out chromatography
Number chromatographic column, need to be replaced frequently chromatographic column in actual operation, the sealed connection mode using nut plus graphite pads is frequent
Graphite pads can be crushed.It is easy to be bent over when chromatographic column is dismantled or connect with sample injector simultaneously, so as to cause analysis sample gas
It cannot be introduced into chromatographic column.
To sum up, current chromatographic column will lead to filler often and spray in removal nebulizer gas pressure causes asking for laboratory accident
Topic, while the disassembly of chromatographic column and sample injector or while connecting, are easy to be bent over.
Summary of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of chromatographic column sampling system is proposed, solve the prior art
Middle gc column tube will lead to the problem of filler ejection causes laboratory accident in removal nebulizer gas pressure often, while gc column tube exists
The problem of being bent over is easy to when dismantling or connect with sample injector.
To solve the above problems, the present invention provides a kind of chromatographic column sampling system, including sample injector, gc column tube and connection
Unit, connection unit include the first connector and the second connector, and the outlet end of sample injector is arranged in the first connector, and second connects
The sample introduction end of gc column tube, the first connector and the connection of the second connector buckle-type, and gc column tube and sample introduction is arranged in fitting
Device is connected to by the first connector and the second connector.
Further, the first connector is sealing ring, and the second connector is the flange docked with sealing ring；Or, second connects
Fitting is sealing ring, and the first connector is the flange docked with sealing ring.
Further, the first connector is the main ring flange equipped with blocked hole；Second connector is time ring flange, secondary flange
The shackle member to match with blocked hole is provided on disk.
Further, the first connector is the fixture block equipped with the first magnetic adsorption layer, and the second connector is equipped with the second magnetic adsorption layer
Chuck, the first magnetic adsorption layer and the second magnetic adsorption layer can be magnetic attracting.
It further, further include pressure release unit, pressure release unit includes pressure relief component and pressure relief opening, and pressure relief opening is arranged in chromatography
On the tube wall of column tube, pressure relief component is connected to by pressure relief opening with gc column tube, and pressure relief component is detachably connected with gc column tube.
Further, pressure relief component includes relief valve or pressure relief plate.
Further, the sample introduction end of gc column tube is provided with injection port, and the inner cavity of gc column tube is close to the position of injection port
It is additionally provided with barrier elastic slice, the trigger button connecting with barrier elastic slice is provided on the outer wall of gc column tube；In the firing state,
Barrier elastic slice is located above pressure relief opening and barrier injection port.
Further, on the side wall of gc column tube, the axial direction of gc column tube is provided with dimension measuring unit, ruler
Very little measuring unit includes:
Size scale adheres to item, and size scale adheres to item and the outer wall viscosity of gc column tube connects.
Further, dimension measuring unit includes flexible scale and flip piece, and flexible scale and gc column tube pass through overturning
Part connection；Flip piece includes hinge or rotation even slot and shaft.
Further, dimension measuring unit includes laser measurer, and laser measurer is for measuring gc column tube along length
Spend the length distance of extending direction insertion sample injector.
For above content of the invention can be clearer and more comprehensible, be cited below particularly preferred embodiment and in conjunction with attached drawing specifically
It is bright.
The beneficial effects of the present invention are:
The present invention provides a kind of chromatographic column sampling system, including sample injector, gc column tube and connection unit, connection unit packet
The first connector and the second connector are included, the outlet end of sample injector is arranged in the first connector, and the second connector is arranged in chromatography
The sample introduction end of pipe, the first connector and the connection of the second connector buckle-type, and gc column tube and sample injector pass through the first connector
It is connected to the second connector.In the prior art, gc column tube can be inserted in when connecting with sample injector at the column cap of gc column tube
Then one section of bushing pipe covers upper cap nut again, graphite pads are put into nut, and then tightening nuts are connect with chromatograph, and is carrying out color
The gc column tube that may require that different model when spectrum analysis to different samples, needs to be replaced frequently chromatographic column in actual operation
Pipe, often crushes graphite pads using the sealed connection mode of nut plus graphite pads, and gc column tube is dismantled with sample injector
Or the problem of being easy to be bent over when connection, cannot be introduced into gc column tube so as to cause analysis sample gas, it is provided by the invention
Chromatographic column sampling system is connected by the first connector and the second connector, is avoided gc column tube and is easy to be rolled in disassembly
It is curved, dismantle inconvenient problem.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of chromatographic column sampling system provided in an embodiment of the present invention；
Fig. 2 is another structural schematic diagram of chromatographic column sampling system provided in an embodiment of the present invention.
Appended drawing reference
1: sample injector；11: sample introduction end；111: injection port；2: gc column tube；3: connection unit；31: the first connectors；32:
Second connector；4: pressure release unit；41: pressure relief component；42: pressure relief opening；5: dimension measuring unit；51: size scale adheres to item；
52: flexible scale；53: flip piece.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation of the instructions such as term " on ", "inner", "bottom" or position are closed
System for be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation usually put or position close
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention " the in addition, term
One ", " second " etc. is only used for distinguishing description, is not understood to indicate or imply relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
Below by specific embodiment combination attached drawing, invention is further described in detail.
To solve foregoing problems ,-Fig. 2 referring to Figure 1, the present embodiment provides a kind of chromatographic column sampling systems, including sample introduction
Device 1, gc column tube 2 and connection unit 3, connection unit 3 include the first connector 31 and the second connector 32, the first connector 31
The outlet end of sample injector 1 is set, and the sample introduction end 11 of gc column tube 2, the first connector 31 and is arranged in the second connector 32
The connection of two connectors, 32 buckle-type, and gc column tube 2 is connected to sample injector 1 by the first connector 31 and the second connector 32.
It continues to refer to figure 1 and Fig. 2, gc column tube 2 is avoided to be easy to be bent over when dismantling or connect with sample injector 1
Problem, chromatographic column sampling system provided in this embodiment, including connection unit 3, gc column tube 2 and sample injector 1 are single by connection
Member 3 connects.Specifically, gc column tube 2 is connect with sample injector 1 by the first connector 31 and the second connector 32, it is easy to disassemble,
When effectively avoiding that gc column tube 2 is connect with sample injector 1 in the prior art, understands and be inserted in one section of bushing pipe at the column cap of gc column tube 2
Then upper cap nut is covered again, graphite pads are put into nut, and then tightening nuts are connect with chromatograph, when carrying out chromatography pair
Different samples may require that the gc column tube of different model, need to be replaced frequently gc column tube in actual operation, use nut
The sealed connection mode of graphite pads is added often to crush graphite pads, and when the column cap of gc column tube is dismantled or connect with sample injector
The problem of being easy to be bent over, cannot be introduced into gc column tube so as to cause analysis sample gas.
Referring to Figure 1, in a kind of connection type of the present embodiment, the first connector 31 is sealing ring, the second connector 32
For the flange docked with sealing ring；Or, the second connector 32 is sealing ring, the first connector 31 is convex to dock with sealing ring
Edge.
Gc column tube 2 is needed to be replaced frequently in actual operation, and the sealed connection mode using nut plus graphite pads is frequent
Graphite pads can be crushed, and when gc column tube 2 is dismantled or connect with sample injector 1 is easy to be bent over, so as to cause sample is analyzed
Gas cannot be introduced into the problem of gc column tube 2, and a kind of structure of the connection unit 3 of the present embodiment can be sealing ring interfacing part.
With reference to Fig. 1, specifically, sealing ring interfacing part includes that the sealing connecting on sample injector 1 with gc column tube 2 is arranged in
Circle；With the flange docked on gc column tube 2 with sealing ring is set, can be by chromatography when gc column tube 2 is connect with sample injector 1
The one end connecting on column tube 2 with sample injector 1 is provided with the flange of outwardly convex, to connect on sample injector 1 with gc column tube 2
The sealing ring at place is squeezed, and realization is connected together, avoid gc column tube 2 and sample injector 1 dismantle or be easy to when connecting by
The problem of bending.
Refer to Fig. 2, in another connection type of the present embodiment, the first connector 31 is the main flange equipped with blocked hole
Disk；Second connector 32 is time ring flange, is provided with the shackle member to match with blocked hole on secondary ring flange.First connector 31
Including sample injector 1 is arranged in 2 junction of gc column tube equipped with the main ring flange of blocked hole, the second connector 32 is to be arranged in color
The secondary ring flange with the cooperation of main ring flange of column tube 2 and 1 junction of sample injector is composed, secondary ring flange is equipped with to match with blocked hole
Shackle member.By the clamping of main ring flange and time ring flange, eliminates gc column tube 2 in the prior art and connect with sample injector 1
When connecing, it is inserted in one section of bushing pipe at 2 column cap of gc column tube and then covers upper cap nut again, graphite pads are put into nut, are then tightened
The operation that nut is connect with chromatograph is easy to be bent over so as to avoid gc column tube 2 when dismantling or connecting with sample injector 1
The problem of.
(schematic diagram is not provided) in another connection type of the present embodiment, the first connector is equipped with the first magnetic adsorption layer
Fixture block, the second connector are the chuck equipped with the second magnetic adsorption layer, and the first magnetic adsorption layer can be magnetic attracting with the second magnetic adsorption layer.First magnetic
It inhales the fixture block of layer and is clamped equipped with the chuck opposite with the first magnetic adsorption layer magnetism by the first magnetic adsorption layer and the second magnetic adsorption layer,
Avoid the problem that gc column tube is easy to be bent over when dismantling or connecting with sample injector.
(do not show in figure, it is understood that being also provided with sealing element at the setting of connection unit in the present embodiment
Out), sealing element includes sealing ring or gasket seal.To avoid the junction of gc column tube 2 and sample injector 1 that carrier gas leakage occurs,
To influence the using effect of gc column tube 2, sealing element can be set in the junction of gc column tube 2 and sample injector 1, need to manage
Solution, the sealing element are also possible to the sealing structure of other structures or material the specific can be that sealing ring or gasket seal
Part as long as can prevent carrier gas from will not leak in the junction of gc column tube 2 and sample injector 1, for example can be
NBR70/FKM sealing ring, for the specific structure and material of sealing element, the present embodiment is not especially limited this.
- Fig. 2 referring to Figure 1, in the present embodiment, chromatographic column sampling system further includes pressure release unit 4, and pressure release unit 4 includes
Pressure relief component 41 and pressure relief opening 42, pressure relief opening 42 are arranged on the tube wall of gc column tube 2, pressure relief component 41 by pressure relief opening 42 with
Gc column tube 2 is connected to, and pressure relief component 41 is detachably connected with gc column tube 2.Pressure relief component 41 is used for removal gc column tube 2
Interior nebulizer gas pressure, commonly used in being used in removal nebulizer gas pressure, to avoid laboratory caused after carrier gas inversion accident.
In addition, when needing disassembly that the pressure relief component 41 on 2 tube wall of gc column tube is arranged in, since pressure relief component 41 is removable
The formula of unloading is arranged on the tube wall of gc column tube 2, it is possible to facilitate carry out removal, meet actual needs, it is to be understood that tool
The pressure relief component 41 of body can be threaded connection, be also possible to the clamping of flange and limiting slot, specific connection type can not
It is limited to the connection type that the present embodiment provides, is detachably connected as long as meeting, the present embodiment is not especially limited this.
In the present embodiment, pressure relief component 41 includes relief valve as Figure 1-Figure 2, is also possible to pressure relief plate (in figure not
It shows).Pressure relief component 41 opens pressure discharge operations by automatically or manually selection, so that the carrier gas in gc column tube 2 is with default
Speed removal, when preventing removal nebulizer gas pressure, caused laboratory accident after carrier gas inversion.Specifically, pressure relief component 41 can
To be relief valve and pressure relief plate, the specific can be that A21F/H/Y relief valve, specific model, structure, are selected according to actual needs
It selects, the present embodiment does not limit this.
It continues to refer to figure 1 and Fig. 2, in the present embodiment, the sample introduction end 11 of gc column tube 2 is provided with injection port 111, chromatography
The inner cavity of column tube 2 is additionally provided with close to the position of injection port 111 obstructs elastic slice (not shown), on the outer wall of gc column tube 2
It is provided with the trigger button connecting with barrier elastic slice；In the firing state, barrier elastic slice be located above pressure relief opening 42 and obstruct into
Sample mouth 111.When need first dismantle gc column tube 2 and sample injector 1 connection, then opening pressure relief component 41 in the case where,
It can be additionally provided with barrier elastic slice (not shown) close to the position of injection port 111 in the inner cavity of gc column tube 2, pass through chromatography
It is provided with the trigger button connecting with barrier elastic slice on the outer wall of column tube 2, by triggering, opens barrier elastic slice and is located at pressure relief opening 42
Top and barrier injection port 111 prevent chromatographic column so that the air pressure in barrier elastic slice holding gc column tube 2 is in stable state
Filling liquid splash in pipe 2；After the completion of sample injector 1 and gc column tube 2 are dismantled, then pressure relief component is opened, removal gc column tube 2
Interior nebulizer gas pressure.
Referring to Figure 1 and Fig. 2, in the present embodiment, on the side wall of gc column tube 2, along the axial direction of gc column tube 2
It is provided with dimension measuring unit 5, when carrying out chromatography, when accessing gc column tube 2 in sample injector 1, generally requires color
Composing the length distance that column tube 2 is inserted into sample injector 1 is 4cm, to guarantee that the length distance that gc column tube 2 is inserted into sample injector 1 is full
Spectrum analysis of standard purity needs, and the axial direction of gc column tube 2 can be provided with dimensional measurement on the side wall of gc column tube 2
Unit 5, the length distance being inserted into sample injector 1 to measure gc column tube 2.
Referring to Figure 1, a kind of dimension measuring unit 5 of the present embodiment, dimension measuring unit 5 can be size scale adherency
Item 51, size scale adherency item 51 are connect with the outer wall viscosity of gc column tube 2.It is inserted into sample injector 1 for measuring gc column tube 2
Length distance.
Another dimension measuring unit 5 of the present embodiment, dimension measuring unit 5 include flexible scale 52 and flip piece 53,
Flexible scale 52 is connect with gc column tube 2 by flip piece 53；Flip piece 53 include hinge, or, flip piece 53 can also be as
Rotation shown in Fig. 2 connects slot and shaft.
It, may be to using to avoid flexible scale 52 from being arranged at 2 side of gc column tube specifically, in actual use
It generates and stops or hinder, influence the use of gc column tube 2, can be set to flexible scale 52 with gc column tube 2 and pass through flip piece
53 connections are set as flexible scale 52 and chromatography by flip piece 53 when carrying out the connection of gc column tube 2 and sample injector 1
Column tube 2 is overlapped in the projection of length extending direction, i.e., flexible scale 52 is arranged in parallel with gc column tube 2, and then to by stretching
Contracting scale 52 come measure gc column tube 2 be inserted into sample injector 1 in length distance；After connection, flip piece 53 can be passed through
It is vertical with the length extending direction of gc column tube 2 to be set as flexible scale 52, that is, stretching, scale 52 is vertical with gc column tube 2 to be set
It sets.
It is to be appreciated that dimension measuring unit 5 can also be not exclusively vertical with gc column tube 2, i.e. dimension measuring unit 5
As long as folding the side for being stowed in gc column tube 2, the use of gc column tube 2, dimension measuring unit 5 and chromatographic column are not influenced
By the formed angle of flip piece 53 between pipe 2, can optionally be selected, the present embodiment is not especially limited this.
In the present embodiment, flip piece 53 includes hinge, or, rotation connects slot and shaft.Please referring to fig. 2, flip piece 53 can
To be hinge, i.e., the side of 2 tube wall of gc column tube is arranged in by rotating hinge in dimension measuring unit 5, when carrying out chromatographic column
When the connection of pipe 2 and sample injector 1, dimension measuring unit 5 and gc column tube 2 are set as in the throwing of length extending direction by hinge
Shadow is overlapped, i.e. dimension measuring unit 5 and the length extending direction of gc column tube 2 is arranged in parallel, and then to pass through dimensional measurement
Unit 5 come measure gc column tube 2 be inserted into sample injector 1 in length distance；After connection, ruler can be set as by hinge
Very little measuring unit 5 is vertical in the projection of its length extending direction respectively with the length extending direction of gc column tube 2, i.e. dimensional measurement
Unit 5 and the length extending direction of gc column tube 2 are vertically arranged.
In addition, when being folded down again by flip piece 53 after being measured for the scale 52 that avoids stretching, it is not easy to downwardly turn over
Flexible scale 52 is retracted shorter length first, facilitates overturning, packs up by problem when can be set to downwardly turn over；Work as needs
When measurement, then by the outside extraction certain length of flexible scale 52, to measure the length that gc column tube 2 is inserted into sample injector 1.
(schematic diagram is not provided) in another dimension measuring unit of the present embodiment, dimension measuring unit includes laser measurement
Device, laser measurer are used to measure gc column tube 2 along the length distance of length extending direction insertion sample injector 1.Laser measurement
Device is all used to measure the length distance that gc column tube 2 is inserted into sample injector 1, saves the practical behaviour in the prior art in chromatography
During work, needs first to have been measured the depth in gc column tube insertion sample injector 1 with ruler, then pinch measured position with hand again
It is operated, it is very inconvenient, while inaccurate, the laser that often causes position to be looked for since 3 outer wall of gc column tube is smooth in insertion
Measuring appliance can effectively solve the problems, such as this, can compare laser measurer in operation and judge that gc column tube 2 is inserted into sample injector
In depth.Laser measurer is the more typical dimension measuring unit that the present embodiment provides, and specifically can be model Go！
SCAN 3DTMLaser measurer, certain dimension measuring unit can also be not limited only to two kinds of structures that the present embodiment provides, depending on
Situation is specifically selected, and the present embodiment is not especially limited this.
Chromatographic column sampling system provided in this embodiment, including sample injector, gc column tube and connection unit, connection unit packet
The first connector and the second connector are included, the outlet end of sample injector is arranged in the first connector, and the second connector is arranged in chromatography
The sample introduction end of pipe, the first connector and the connection of the second connector buckle-type, and gc column tube and sample injector pass through the first connector
It is connected to the second connector.In the prior art, gc column tube can be inserted in when connecting with sample injector at the column cap of gc column tube
Then one section of bushing pipe covers upper cap nut again, graphite pads are put into nut, and then tightening nuts are connect with chromatograph, and is carrying out color
The gc column tube that may require that different model when spectrum analysis to different samples, needs to be replaced frequently chromatographic column in actual operation
Pipe, often crushes graphite pads using the sealed connection mode of nut plus graphite pads, and gc column tube is torn open when with sample injector
The problem of unloading or be easy to be bent over when connecting, cannot be introduced into gc column tube so as to cause analysis sample gas.The present embodiment mentions
The chromatographic column sampling system of confession is connected by the first connector and the second connector, is avoided gc column tube and is easy in disassembly
It is bent over, thus dismantles inconvenient problem.
It is to sum up, provided by the invention that the above-described embodiments merely illustrate the principles and effects of the present invention, not for
The limitation present invention.Any person skilled in the art all without departing from the spirit and scope of the present invention, to above-described embodiment
Carry out modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed essence
All equivalent modifications or change completed under mind and technical idea, should be covered by the claims of the present invention.
Claims (10)
1. a kind of chromatographic column sampling system, which is characterized in that including sample injector, gc column tube and connection unit, the connection is single
Member includes the first connector and the second connector, and first connector is arranged in the outlet end of the sample injector, and described second
The sample introduction end of the gc column tube is arranged in connector, and first connector is connected with the second connector buckle-type, and
The gc column tube is connected to the sample injector by first connector and second connector.
2. chromatographic column sampling system as described in claim 1, which is characterized in that first connector is sealing ring, described
Second connector is the flange docked with the sealing ring；Or,
Second connector is sealing ring, and first connector is the flange docked with the sealing ring.
3. chromatographic column sampling system as described in claim 1, which is characterized in that first connector is equipped with blocked hole
Main ring flange；Second connector is time ring flange, is provided with the card to match with the blocked hole on the secondary ring flange
Fitting.
4. chromatographic column sampling system as described in claim 1, which is characterized in that first connector is equipped with the first magnetic
The fixture block of layer, second connector are the chuck equipped with the second magnetic adsorption layer, first magnetic adsorption layer and second magnetic adsorption layer
It can be magnetic attracting.
5. chromatographic column sampling system according to any one of claims 1-4, which is characterized in that it further include pressure release unit, it is described
Pressure release unit includes pressure relief component and pressure relief opening, and the pressure relief opening is arranged on the tube wall of the gc column tube, the pressure release portion
Part is connected to by the pressure relief opening with the gc column tube, and the pressure relief component is detachably connected with the gc column tube.
6. chromatographic column sampling system as claimed in claim 5, which is characterized in that the pressure relief component includes relief valve or pressure release
Plate.
7. chromatographic column sampling system as claimed in claim 6, which is characterized in that the sample introduction end of the gc column tube is arranged
There is injection port, the inner cavity of the gc column tube is additionally provided with barrier elastic slice, the gc column tube close to the position of the injection port
Outer wall on be provided with and the trigger button that connect of barrier elastic slice；In the firing state, the barrier elastic slice is located at described
Above pressure relief opening and obstruct the injection port.
8. chromatographic column sampling system as claimed in claim 7, which is characterized in that on the side wall of the gc column tube, along institute
The axial direction for stating gc column tube is provided with dimension measuring unit.
9. chromatographic column sampling system as claimed in claim 8, which is characterized in that
The dimension measuring unit includes: size scale adherency item, and the size scale adherency item is outer with the gc column tube
The connection of wall viscosity；Or
The dimension measuring unit includes flexible scale and flip piece, and the flexible scale and the gc column tube pass through flip piece
Connection；The flip piece includes hinge, or, rotation connects slot and shaft.
10. chromatographic column sampling system as claimed in claim 8, which is characterized in that the dimension measuring unit includes Laser Measuring
Measuring device, the laser measurer be used to measure the gc column tube along length extending direction be inserted into the length of the sample injector away from
From.
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| CN110646551A (en) * | 2019-11-05 | 2020-01-03 | 兰州东立龙信息技术有限公司 | Chromatographic sample injector |
| CN114965737A (en) * | 2022-04-14 | 2022-08-30 | 北京佳分分析仪器技术有限公司 | Thermal cracking chromatographic analysis and detection method and device |
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| CN109283271B (en) | 2023-11-03 |
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