CN2738252Y

CN2738252Y - Capillary column and filling column two purpose sampler for gas chromatography

Info

Publication number: CN2738252Y
Application number: CN 200420107960
Authority: CN
Inventors: 张天龙
Original assignee: SHANGHAI KECHUANG CHROMATOGRAPH INSTRUMENTS CO Ltd
Current assignee: SHANGHAI KECHUANG CHROMATOGRAPH INSTRUMENTS CO Ltd
Priority date: 2004-11-04
Filing date: 2004-11-04
Publication date: 2005-11-02
Anticipated expiration: 2014-11-04

Abstract

The utility model discloses a capillary column and filling column two purpose sampler for gas chromatography, comprising a sampler main body which is provided with an inner cavity, and a liner tube which is provided with an inner cavity and a lower end opening. The liner tube is fixedly sheathed in the inner cavity of the sampler main body. The capillary column and filling column two purpose sampler for gas chromatography also comprises the heat radiating cap of an injecting end head on the sampler, a needle guiding device, a sampling seal pad, a cleaning flow divider, a movable clamping ring, a sleeve ring and a carbon seal ring; the movable clamping ring, the sleeve ring and the carbon seal ring are used for fixing the liner tube. The joint of a capillary column or the joint tube of a filling column is extended into the inner cavity of the liner tube by the lower end joint of the sampler main body, and can be fixed by a fixing device which is fixedly arranged at the lower end joint of the sampler main body. The capillary column and filling column two purpose is capable of capillary column and filling column two purposes; when different samples are analyzed, the capillary column or the filling column can be used respectively only by changing to connect with the corresponding column joint as required. The capillary column and filling column two purpose sampler for gas chromatography can realize the standardization and generalization of samplers for gas chromatograph, and can reduce the cost of the entire product.

Description

Gas chromatography capillary column, the dual-purpose injector of packed column

Technical field

The utility model is a kind of a kind of sampling device that can be applicable on the gas chromatograph of various laboratories, specifically a kind of capillary column, dual-purpose injector of packed column of relating to.

Technical background

At present, in gas chromatographic analysis technique, according to the different needs of analyzed sample, the sample analysis that has need be used capillary column, and the sample analysis that has need be used packed column.Gas chromatograph on the market mostly is respectively fitted with the capillary column injector and the packed column injector of different structure designs.This can bring inconvenience in actual applications, for example on the instrument that has the capillary column injector, can not do the packed column analysis, just can do general capillary column analysis and will do bigger repacking on original packed column injector.Be equipped with the capillary column injector and the packed column injector of two kinds of different structure designs simultaneously, just make equipment investment bigger, cause unnecessary cost waste.

Therefore design a kind of efficient capillary column sample introduction analysis of both can having done, the dual-purpose injector that can do the analysis of packed column sample introduction again becomes the technical matters of solution that those skilled in the art press for.

Summary of the invention

Technical problem to be solved in the utility model provides a kind ofly both can do the capillary column sample introduction, can make the dual-purpose injector of packed column sample introduction again, can not exchange, use shortcomings such as inconvenience, financial cost height to overcome existing two kinds of injectors.

The utility model is design like this, a well-designed cover has the injector of separate system of barrier film purging system and capillary column shunting/not, comprise that injector main body, injector are injected the radiating cap of termination, drawn the pin device, sample introduction sealing gasket, the bushing pipe that cleans shunt and have certain size to require, bushing pipe is to utilize the cleaning shunt to push down a cover dynamic pressure circle, the collar and carbon seal ring to be secured in the inner chamber of injector main body.In joint, injector main body lower end, designed capillary column respectively with joint and packed column joint.

The technical scheme of the utility model technical solution problem is as follows: a kind of gas chromatography capillary column, the dual-purpose injector of packed column, comprise injector main body that has inner chamber and the bushing pipe that has the lower ending opening of inner chamber, described bushing pipe fixed cover is in the inner chamber of injector main body, also comprise the radiating cap that injects the termination on the injector, draw the pin device, the sample introduction sealing gasket, the cleaning shunt reaches the fixedly dynamic pressure circle of bushing pipe, the collar and carbon seal ring, it is characterized in that, the joint, lower end of described injector main body extend into capillary column joint or packed column junction block in the inner chamber of bushing pipe and by stationary installation and fixes, and described stationary installation is to be fixedly installed on joint, injector main body lower end.

The beneficial effects of the utility model: the utility model, but capillary column and packed column are dual-purpose, in the time of need using capillary column or packed column respectively during at different sample analysis, as long as the column joint of correspondence in the changing-over.All bring great convenience for processing, assembling, debugging, application, realized the standardization and the universalization of gas chromatography injector, also reduced the cost of machine product, have very practical effect.

Description of drawings:

Fig. 1 is the utility model package assembly synoptic diagram when making the capillary column injector;

When Fig. 2 is the attaching capillary column, the structure for amplifying synoptic diagram of capillary column joint;

Fig. 3 is the utility model package assembly synoptic diagram when making the packed column injector;

When Fig. 4 is the attaching packed column, the structure for amplifying synoptic diagram of packed column joint.

Embodiment:

Further specify the utility model below in conjunction with accompanying drawing.

Referring to Fig. 1, for the utility model gas chromatography is analyzed assembly drawing with the capillary column of dual-purpose injector, comprise injector main body 8 that has inner chamber and the bushing pipe 9 that has inner chamber and lower ending opening, described bushing pipe 9 is to use cleaning shunt 4, down pushing down cover dynamic pressure circle 5 collars 6 and carbon seal ring 7 fixes in the inner chamber that is enclosed within injector main body 8, on cleaning shunt 4, sample introduction sealing gasket 3 is housed successively, draws pin device 2 and radiating cap 1.

Referring to Fig. 2, assembly drawing for the capillary column joint, described capillary column joint comprises capillary column 16, capillary column joint 13, little nut 14 and O-ring seal 15, described capillary column joint 13 is the cylindrical component that has the both ends open of capillary column passage, capillary column 16 is crossed the capillary column passages and is stretched out capillary column joint 13, and the lower end of described capillary column joint 13 is fixed capillary column by little nut 14 and O-ring seal 15.Described capillary column stretches into the about 10mm of liner at its lower end inner chamber, and capillary column joint 13 is fixedlyed connected by big nut 10, O-

ring seal

11,8 times end connectors of trim ring 12 and injector main body.

Referring to Fig. 3, analyze assembly drawing for the packed column of the dual-purpose injector of the utility model gas chromatography, Fig. 4 is packed column adapter assembly figure.The constitutional detail of assembling in the injector main frame of Fig. 3 and Fig. 1 and the inner chamber is identical, the column joint difference that connects of injector main body 8 lower ends only, described packed column 18 adopts nut 19, O-ring seal 20, the trim ring 21 of standard universal to be connected with packed column joint 17, and described packed column joint 17 upper pipes extend in bushing pipe 9 inner chambers and by big nut 10, O-

ring seal

11,8 times end connectors of trim ring 12 and injector main body fixedlys connected.

As further improvement of the utility model, described packed column joint comprises connecting pipe and joint, connecting pipe and joint are welded to connect, and end connector adopts big nut, trim ring, O-ring seal to be connected under described connecting pipe lower end and the injector main body, stretches in the bushing pipe inner chamber on the described connecting pipe.

The utility model is to use like this: when using as the capillary column injector (Fig. 1), capillary column is installed on the joint 13 with little nut 14 and carbon seal ring 15, be installed in from bottom to top on 8 times end connectors of injector main body with big nut 10, O-ring seal 11 and trim ring 12 then, capillary column 16 inserts the about 10mm of bushing pipe, can do capillary column shunting/not split sampling analysis.

When using (Fig. 3) as the packed column injector, big nut 10, O-ring seal 11 and trim ring 12 are dismantled from injector main body 8 lower ends from the top down, thereby the capillary column joint is removed, change packed column joint 17 then, the pipe of packed column joint 17 is inserted in the bushing pipe 9, following end connector gets final product attaching packed column 18, thereby realizes the analysis of packed column sample introduction.When doing the packed column analysis, can close the shunting outlet, also can lead to a certain amount of carrier gas input of 5～10mL/min.

Claims

1. gas chromatography capillary column, the dual-purpose injector of packed column, comprise injector main body that has inner chamber and the bushing pipe that has the lower ending opening of inner chamber, described bushing pipe fixed cover is in the inner chamber of injector main body, also comprise the radiating cap that injects the termination on the injector, draw the pin device, the sample introduction sealing gasket, the cleaning shunt reaches the fixedly dynamic pressure circle of bushing pipe, the collar and carbon seal ring, it is characterized in that, the joint, lower end of described injector main body extend into capillary column joint or packed column junction block in the inner chamber of bushing pipe and by stationary installation and fixes, and described stationary installation is to be fixedly installed on joint, injector main body lower end.

2. dual-purpose injector according to claim 1, it is characterized in that, when described injector main body connects the capillary column adapter assembly, described capillary column adapter assembly comprises capillary column, the capillary column joint, little nut and O-ring seal, described capillary column joint is the cylindrical component that has the both ends open of capillary column passage, capillary column passes the capillary column passage and stretches out the capillary column joint, the lower end of described capillary column joint is fixed capillary column by little nut and O-ring seal, described capillary column stretches into bushing pipe inner chamber 5～15mm, and the capillary column joint is fixedlyed connected with the following end connector of injector main body by stationary installation.

3. dual-purpose injector according to claim 1, it is characterized in that, when described injector main body connects the packed column adapter assembly, described packed column adapter assembly comprises packed column joint and packed column, described packed column adopts nut, trim ring, O-ring seal to be connected with the packed column joint, and described packed column upper end of joint pipe extend in the bushing pipe inner chamber and by stationary installation fixedlys connected with the following end connector of injector main body.

4. according to claim 2 or 3 described dual-purpose injectors, it is characterized in that described stationary installation comprises big nut, O-ring seal and trim ring, described big nut is connected with end connector under the injector main body, described trim ring is enclosed within the O-ring seal back, and trim ring and O-ring seal are positioned at big nut inside.

5. dual-purpose injector according to claim 3, it is characterized in that, described packed column joint comprises connecting pipe and joint, and end connector adopts big nut, trim ring, O-ring seal to be connected under described connecting pipe lower end and the injector main body, stretches in the bushing pipe inner chamber on the described connecting pipe.

6. dual-purpose injector according to claim 4 is characterized in that, described injector main body wall is provided with shunting outlet, carrier gas inlet and the outlet of barrier film cleaning gas.