CN214668810U

CN214668810U - Auxiliary device for gas chromatograph

Info

Publication number: CN214668810U
Application number: CN202120575587.4U
Authority: CN
Inventors: 王国敏; 张海垒; 马效凯
Original assignee: Jinan Yusong Experimental Equipment Co ltd
Current assignee: Jinan Yusong Experimental Equipment Co ltd
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-09
Anticipated expiration: 2031-03-22

Abstract

The utility model provides an auxiliary device for gas chromatograph, which comprises a housin, install the insulation can in the casing, one side is equipped with first heating member in the insulation can, install two six-way valves that are used for connecting chromatographic column and entrapment trap in the first heating member, be connected with the connecting rod on the six-way valve rod, the one end that six-way valve was kept away from to the connecting rod runs through the insulation can and connects the cylinder expansion end, the cylinder is installed in the casing, one side of keeping away from first heating member in the insulation can is installed the second heating member, it has the chromatographic column to be the heliciform winding on the second heating member, compare with prior art, the utility model discloses following beneficial effect has: the column box is miniaturized, simple in structure and low in failure rate.

Description

Auxiliary device for gas chromatograph

Technical Field

The utility model relates to an auxiliary device for gas chromatograph belongs to chromatographic analysis technical field.

Background

The multidimensional chromatographic auxiliary device and the multidimensional chromatographic auxiliary system are integrated with a gas chromatograph (mainly brands such as Agilent, Shimadzu, PE, Saimeishefei and the like) to be used for rapidly detecting hydrocarbon components in gasoline so as to qualitatively and quantitatively analyze the contents of saturated hydrocarbon, benzene, aromatic hydrocarbon and olefin in the gasoline.

At present, often install the chromatographic column and heat the heat preservation in the column box, traditional column box is bulky, need install the stove silk additional, need have the control by temperature change mainboard to heat the stove silk and control by temperature change, because the volume ratio is great, so need install the fan additional and carry out temperature balance to the column box, the structure is more complicated, and the fault rate is high, and the processing cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model provides an auxiliary device for gas chromatograph to it is bigger to provide traditional column box volume in solving above-mentioned background art, need install the stove silk additional, need have the temperature control mainboard to heat and control by temperature change the stove silk, because the volume is bigger, so need install the fan additional and carry out temperature balance to the column box, the structure is more complicated, the fault rate is high, the problem that the processing cost is high, the utility model discloses realize the miniaturation of column box, simple structure, fault rate are low.

In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides an auxiliary device for gas chromatograph, includes the casing, install the insulation can in the casing, one side is equipped with first heating member in the insulation can, install two six-way valves that are used for connecting chromatographic column and trapping well in the first heating member, be connected with the connecting rod on the valve rod of six-way valve, the one end that six-way valve was kept away from to the connecting rod runs through the insulation can and connects the cylinder expansion end, the cylinder is installed in the casing, keep away from one side of first heating member in the insulation can and install the second heating member, it has the chromatographic column to be the heliciform winding on the second heating member.

Furthermore, a first penetrating hole is formed in the middle of one side of the first heating body, a first heating rod is installed in the first penetrating hole, a first installation hole is formed in the lower side of the first penetrating hole, and a first thermocouple is installed in the first installation hole.

Furthermore, a second penetrating hole is formed in the middle of one side of the second heating body, a second heating rod is installed in the second penetrating hole, a second installation hole is formed in the lower side of the second penetrating hole, and a second thermocouple is installed in the second installation hole.

Further, the cylinder inlet end and the end of giving vent to anger have the solenoid valve through the pipe connection, the solenoid valve has the relief pressure valve through the pipe connection, the relief pressure valve has the air inlet through the pipe connection, solenoid valve, relief pressure valve and air inlet all with casing fixed connection.

Furthermore, the solenoid valve is connected with a stabilized voltage power supply through a lead, and the stabilized voltage power supply is electrically connected with a solenoid valve controller for controlling the action of the solenoid valve through a lead.

Further, a pressure gauge is arranged between the electromagnetic valve and the pressure reducing valve and communicated with the electromagnetic valve and the pressure reducing valve through pipelines, and the pressure gauge is installed on one side face of the shell.

The utility model has the advantages that:

1. the two six-way valves are connected with the chromatographic column and the trapping trap through gas path pipes, the six-way valves are connected to the cylinder through connecting rods, the cylinder acts to drive the six-way valves to switch, so that the gas path flowing direction of the instrument is changed, the flowing direction of a sample in the whole device is changed by changing the flow direction of carrier gas of the instrument, the separation effect is achieved, and qualitative and quantitative analysis is achieved.

2. The valve head of the six-way valve is arranged on the first heating body, the chromatographic column is wound on the second heating body and is in close contact with the first heating body, the temperature of the chromatographic column is controlled by controlling the temperature of the first heating body and the second heating body, the temperature of the heat preservation box is controlled by the chromatograph, the temperature suitable for sample separation is given to the valve head of the six-way valve and the chromatographic column, and the normal separation of samples is facilitated.

3. Utilize first heating member, second heating member to heat and control by temperature change six-way valve, chromatographic column respectively, traditional column case compares need not to install the stove silk additional, need not to install the fan additional and carries out temperature balance to the column case, and the volume reduces, realizes the miniaturation of column case, simple structure, and the fault rate is low, and the processing cost is low.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural diagram of an auxiliary device for a gas chromatograph according to the present invention;

fig. 2 is a schematic structural diagram of a first heating body in an auxiliary device for a gas chromatograph according to the present invention;

fig. 3 is a schematic structural diagram of a second heating member in an auxiliary device for a gas chromatograph according to the present invention;

in the figure: the device comprises a shell 1, a heat preservation box 2, a six-way valve 3, a connecting rod 4, an air cylinder 5, an electromagnetic valve 6, a stabilized voltage power supply 7, an electromagnetic valve 8, an air inlet 9, a first heating body 10, a pressure reducing valve 11, a pressure gauge 12, a second heating body 13, a chromatographic column 14, a first through hole 15, a first mounting hole 16, a first thermocouple 17, a first heating rod 18, a second heating rod 19, a second thermocouple 20, a second mounting hole 21 and a second through hole 22.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an auxiliary device for gas chromatograph, including casing 1, install insulation can 2 in the casing 1, one side is equipped with first heating member 10 in the insulation can 2, install two six-way valves 3 that are used for connecting chromatographic column 14 and entrapment trap in the first heating member 10, be connected with connecting rod 4 on the 3 valve rods of six-way valve, the one end that six-way valve 3 was kept away from to connecting rod 4 runs through insulation can 2 and connects 5 loose ends of cylinder, cylinder 5 is installed in casing 1, connect chromatographic column 14 and entrapment trap through the gas circuit pipe on two six-way valves 3, six-way valve 3 is connected to on the cylinder 5 through connecting rod 4, cylinder 5 moves and drives six-way valve 3 and switches, thereby change the gas circuit flow direction of instrument, thereby change the flow direction of sample in the whole set through changing instrument carrier gas flow direction, in order to reach the effect of separation, thereby realize qualitatively, quantitative analysis.

The second heating body 13 is arranged on one side of the heat preservation box 2 far away from the first heating body 10, the chromatographic column 14 is spirally wound on the second heating body 13, the valve head part of the six-way valve 3 is arranged on the first heating body 10, the chromatographic column 14 is wound on the second heating body 13 and is in close contact with the second heating body 13, the temperature control of the chromatographic column 14 is realized by controlling the temperatures of the first heating body 10 and the second heating body 13, the temperature of the heat preservation box 2 is controlled by a chromatograph, the valve head of the six-way valve 3 and the chromatographic column 14 are provided with a temperature suitable for sample separation, the normal separation of samples is convenient, the six-way valve 3 and the chromatographic column 14 are respectively heated and temperature-controlled by utilizing the first heating body 10 and the second heating body 13, compared with the traditional column box, no furnace wire is required to be additionally arranged, no fan is required to carry out temperature balance on the column box, the volume is reduced, the miniaturization of the column box is realized, the structure is simple, the failure rate is low, the processing cost is low.

First interlude hole 15 has been seted up to first heating member 10 one side middle part position, install first heating rod 18 in the first interlude hole 15, first interlude hole 15 downside is equipped with first mounting hole 16, install first thermocouple 17 in the first mounting hole 16, switch on behind the circuit of first heating rod 18, first heating rod 18 converts the electric energy into heat energy and heats first heating member 10, heat six-way valve 3 promptly, the temperature on first heating member 10 is fed back to first thermocouple 17, be convenient for control the temperature of first heating member 10.

Second penetrator 22 has been seted up to second heating member 13 one side middle part position, install second heating rod 19 in the second penetrator 22, second penetrator 22 downside is equipped with second mounting hole 21, install second thermocouple 20 in the second mounting hole 21, switch-on second heating rod 19's circuit back, second heating rod 19 converts the electric energy into heat energy and heats second heating member 13, heat chromatographic column 14 promptly, second thermocouple 20 feeds back the temperature on the second heating member 13, be convenient for control the temperature of second heating member 13.

5 inlet end of cylinder and the end of giving vent to anger have solenoid valve 8 through the pipe connection, solenoid valve 8 has relief pressure valve 11 through the pipe connection, relief pressure valve 11 has air inlet 9 through the pipe connection, solenoid valve 8, relief pressure valve 11 and air inlet 9 all with casing 1 fixed connection, installation relief pressure valve 11 between solenoid valve 8 and air inlet 9, be convenient for adjust the atmospheric pressure that gets into in the cylinder 5.

Solenoid valve 8 is connected with constant voltage power supply 7 through the wire, and constant voltage power supply 7 has solenoid valve controller 6 that is used for controlling 8 actions of solenoid valve through wire electric connection, and cylinder 5 is connected to solenoid valve 8 through the pipeline, and the rotation of cylinder 5 is controlled by solenoid valve 8, and solenoid valve controller 6 switches solenoid valve 8 through the program command to finally realize the switching of six-way valve 3.

A pressure gauge 12 is arranged between the electromagnetic valve 8 and the pressure reducing valve 11, the pressure gauge 12 is communicated with the electromagnetic valve 8 and the pressure reducing valve 11 through pipelines, the pressure gauge 12 is installed on one side face of the shell 1, and the pressure gauge 12 is installed between the electromagnetic valve 8 and the pressure reducing valve 11, so that the pressure of the air inlet side of the electromagnetic valve 8 can be observed conveniently.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An auxiliary device for a gas chromatograph, comprising a casing (1), characterized in that: install insulation can (2) in casing (1), one side is equipped with first heating member (10) in insulation can (2), install two six-way valves (3) that are used for connecting chromatographic column (14) and entrapment well in first heating member (10), be connected with connecting rod (4) on six-way valve (3) valve rod, the one end that six-way valve (3) were kept away from in connecting rod (4) runs through insulation can (2) and connects cylinder (5) expansion end, install in casing (1) cylinder (5), one side of keeping away from first heating member (10) in insulation can (2) is installed second heating member (13), it has chromatographic column (14) to be the heliciform winding on second heating member (13).

2. An auxiliary device for a gas chromatograph according to claim 1, characterized in that: first interlude hole (15) have been seted up to first heating member (10) one side middle part position, install first heating rod (18) in first interlude hole (15), first interlude hole (15) downside is equipped with first mounting hole (16), install first thermocouple (17) in first mounting hole (16).

3. An auxiliary device for a gas chromatograph according to claim 1, characterized in that: a second through hole (22) is formed in the middle of one side of the second heating body (13), a second heating rod (19) is installed in the second through hole (22), a second mounting hole (21) is formed in the lower side of the second through hole (22), and a second thermocouple (20) is installed in the second mounting hole (21).

4. An auxiliary device for a gas chromatograph according to claim 1, characterized in that: cylinder (5) inlet end and the end of giving vent to anger have solenoid valve (8) through the pipe connection, solenoid valve (8) have relief pressure valve (11) through the pipe connection, relief pressure valve (11) have air inlet (9) through the pipe connection, solenoid valve (8), relief pressure valve (11) and air inlet (9) all with casing (1) fixed connection.

5. An auxiliary device for a gas chromatograph according to claim 4, characterized in that: the electromagnetic valve (8) is connected with a stabilized voltage power supply (7) through a lead, and the stabilized voltage power supply (7) is electrically connected with an electromagnetic valve controller (6) used for controlling the electromagnetic valve (8) to act through the lead.

6. An auxiliary device for a gas chromatograph according to claim 4, characterized in that: be equipped with manometer (12) between solenoid valve (8) and relief pressure valve (11), manometer (12) are linked together through pipeline and solenoid valve (8), relief pressure valve (11), install in a side of casing (1) manometer (12).