Gas sampling device for chromatographic instrument

Abstract

The utility model discloses a gas sample introduction device for a chromatographic instrument, and particularly relates to the technical field of chromatographic instruments, the gas sample introduction device comprises a heating valve box, a heating resistor is fixedly arranged in the heating valve box, a six-way valve is arranged in the heating valve box, an inert quantitative loop is arranged on the six-way valve, a valve driving block is arranged on one side of the heating valve box, and the valve driving block is arranged on the other side of the heating valve box. A gas inlet and a gas outlet are formed in one side of the external chromatography outer box, a gas inlet filter and a gas outlet filter are fixedly mounted on the gas inlet and the gas outlet respectively, and a gas inlet connecting pipe and a gas outlet connecting pipe are mounted between the gas inlet and the six-way valve and between the gas outlet and the six-way valve respectively. Through the arrangement of the six-way valve, the inert quantitative ring, the gas inlet, the gas outlet and the like, after the chromatographic instrument is modified, the content of methanol in liquid, the content of ethanol in methanol and the content of methanol in gas can be analyzed on the basis of the original configuration, the use requirement can be met, and the actual use effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chromatograph, more specifically, the utility model relates to a gas sampling device for chromatograph. BACKGROUND

[0002] The existing 7# gas chromatograph has two sets of shunt / non-shunt liquid sampling ports, one set of EPC electronic pressure and flow control (EPC) FID detector and TCD detector, one HP-PLOTQ (30m*0.53mm) and one HB DP-wax (60m*0.32mm), but the existing configuration can only meet the analysis of methanol in liquid and ethanol in methanol, and cannot meet the analysis of methanol in gas.

[0003] Therefore, a gas sampling device for chromatograph is urgently needed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the above-mentioned defects of the prior art, the embodiment of the utility model provides a gas sampling device for chromatograph, which is provided with a six-way valve, an inert quantitative ring, an air inlet and an air outlet and other structures, so that after the chromatograph is modified by the utility model, in addition to the analysis of methanol in liquid and ethanol in methanol on the basis of the original configuration, the content of methanol in gas can also be analyzed, which can meet the use requirements and has good actual use effect, so as to solve the problems proposed in the above background technology.

[0005] In order to achieve the above-mentioned purposes, the utility model provides the following technical scheme: a gas sampling device for chromatograph, comprising a heating valve box, a heating resistor is fixedly installed inside the heating valve box, a six-way valve is arranged inside the heating valve box, an inert quantitative ring is installed on the six-way valve, a valve driving block is arranged on one side of the heating valve box, an air inlet and an air outlet are arranged on one side of an externally connected chromatograph outer box, an air inlet filter and an air outlet filter are fixedly installed on the air inlet and the air outlet respectively, an air inlet connecting pipe and an air outlet connecting pipe are installed between the air inlet and the air outlet and the six-way valve respectively, and a silica gel filtering device is arranged at the bottom of the air inlet.

[0006] In a preferred embodiment, the heating valve box is arranged at the top of the externally connected chromatograph outer box.

[0007] In a preferred embodiment, the valve driving block is arranged at the top of the externally connected chromatograph outer box.

[0008] Technical effects and advantages of the utility model:

[0009] The utility model discloses a six -way valve, inert quantitative ring, air inlet and gas outlet etc. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the whole structure schematic diagram of the utility model.

[0011] The sign is: 1, heating valve box, 2, valve drive block, 3, silica gel filter device, 4, air inlet, 5, gas outlet, 6, air inlet filter, 7, gas outlet filter, 8, air inlet connecting pipe, 9, gas outlet connecting pipe. DETAILED DESCRIPTION

[0012] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the range of the utility model protection.

[0013] As shown in the accompanying Figure 1 The utility model discloses a gas sampling device for chromatograph, including heating valve box 1, heating resistance is fixedly installed in heating valve box 1, six -way valve is arranged in heating valve box 1, inert quantitative ring is installed on six -way valve, valve drive block 2 is arranged in heating valve box 1 side, and the air inlet 4 and gas outlet 5 of external chromatograph outer box side are arranged, air inlet 4 and gas outlet 5 are respectively fixedly installed with air inlet filter 6 and gas outlet filter 7, and air inlet 4 and gas outlet 5 and inert quantitative ring on six -way valve are respectively installed with air inlet connecting pipe 8 and gas outlet connecting pipe 9, and air inlet 4 bottom is provided with silica gel filter device 3.

[0014] Heating valve box 1 is arranged at the top of the external chromatograph outer box.

[0015] Valve drive block 2 is arranged at the top of the external chromatograph outer box.

[0016] The utility model discloses the following advantages: when using the utility model, increase one six -way valve and heating valve box 1 on the upper portion of the external chromatographic column box, install inert quantitative ring on six -way valve, and connect the carrier gas pipeline and chromatographic column pipeline on the external chromatographic column box with gas inlet 4 and gas outlet 5, and gas passes through valve drive block 2 and enters inert quantitative ring, install two -way pipeline on the lateral surface of the external chromatographic column box, and they are gas inlet 4 and gas outlet 5 with filter respectively, connect a set of silica gel filtering device 3 that absorbs moisture outside gas inlet 4, after improvement, chromatograph gas and liquid pass through different sample inlets, enter chromatographic column and separate matter, then pass through detector and carry out component detection, and the workstation exports result, through the analysis of methanol in gas, it is favorable to the adjustment on production process, after the reformation is completed, in addition to the methanol in liquid, the ethanol content in methanol and the methanol content in gas that can be analyzed on the basis of original configuration.

[0017] The utility model discloses the following advantages: when using the utility model, increase one six -way valve and heating valve box 1 on the upper portion of the external chromatographic column box, install inert quantitative ring on six -way valve, and connect the carrier gas pipeline and chromatographic column pipeline on the external chromatographic column box with gas inlet 4 and gas outlet 5, and gas passes through valve drive block 2 and enters inert quantitative ring, install two -way pipeline on the lateral surface of the external chromatographic column box, and they are gas inlet 4 and gas outlet 5 with filter respectively, connect a set of silica gel filtering device 3 that absorbs moisture outside gas inlet 4, after improvement, chromatograph gas and liquid pass through different sample inlets, enter chromatographic column and separate matter, then pass through detector and carry out component detection, and the workstation exports result, through the analysis of methanol in gas, it is favorable to the adjustment on production process, after the reformation is completed, in addition to the methanol in liquid, the ethanol content in methanol and the methanol content in gas that can be analyzed on the basis of original configuration.

[0018] Refer to the description accompanying drawings of the utility model Figure 1 When using the utility model, through being equipped with six -way valve, inert quantitative ring, gas inlet 4 and gas outlet 5 etc., in addition to the methanol in liquid, the ethanol content in methanol and the methanol content in gas that can be analyzed on the basis of original configuration after the reformation of chromatograph of the utility model, can satisfy the use demand, and the actual use effect is better.

[0019] Finally, it should be pointed out that: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative position relationship, when the absolute position of the described object changes, the relative position relationship may change;

[0020] Secondly: the utility model discloses the embodiment in the drawing, only relates to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of not conflicting, the same embodiment and different embodiments of the utility model can be combined with each other;

[0021] Finally: the above only is the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A gas injection device for a chromatograph, comprising a heating valve box (1), characterized in that: A heating resistor is fixedly installed inside the heating valve box (1). A six-way valve is installed inside the heating valve box (1). An inert metering ring is installed on the six-way valve. A valve drive block (2) is installed on one side of the heating valve box (1). An air inlet (4) and an air outlet (5) are provided on one side of the external chromatograph box. An air inlet filter (6) and an air outlet filter (7) are fixedly installed on the air inlet (4) and the air outlet (5). An air inlet pipe (8) and an air outlet connecting pipe (9) are installed between the air inlet (4) and the six-way valve, respectively. A silica gel filter device (3) is provided at the bottom of the air inlet (4).

2. The gas injection device for a chromatograph according to claim 1, characterized in that: The heating valve box (1) is located on the top of the external chromatograph box.

3. A gas injection device for a chromatograph according to claim 1, characterized in that: The valve drive block (2) is located on the top of the external chromatograph chamber.

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