Multi-flow-path chlorine gas purity online detection equipment

Abstract

The utility model relates to the technical field of chlorine gas purity on-line detection equipment, in particular to multi-flow-path chlorine gas purity on-line detection equipment which comprises a gas path system, a sample injection system, a separation system, a detection system and a recording system, the gas path system comprises a pressure reducing valve, a purifier and a pressure stabilizing valve, and the outlet end of the pressure reducing valve is sequentially connected with the purifier and the pressure stabilizing valve; according to the multi-flow-path chlorine gas analyzer, the multi-flow-path design is adopted, the chlorine gas purity detection precision is higher, the analysis time consumption is greatly shortened, the analysis efficiency is improved, different chromatographic columns and detectors are used on different flow paths, a sample can be analyzed more comprehensively, the detection time is shortened, and the detection efficiency is improved. Different chromatographic columns and detectors are matched with each other, so that mutual interference between certain compounds and other components can be effectively avoided, the data accuracy is ensured, the analysis time can be shortened by multiple flow paths, efficient analysis is realized, and the analysis efficiency is improved by simultaneously performing several types of analysis on different flow paths.

Description

Technical Field

[0001] The utility model relates to the technical field of chlorine purity online detection equipment, in particular to a multi-flow path chlorine purity online detection equipment. Background Art

[0002] At present, the hydrogen content, oxygen content, purity and other indicators of chlorine are all manually sampled and analyzed by laboratory technicians. After absorbing the gas on site with a gas volume tube, the technicians take it to the laboratory for further analysis. Manual sampling and analysis cannot effectively monitor the hydrogen content, oxygen content, purity and other indicators of chlorine. When the hydrogen content in the chlorine gas enters the explosion limit range (when the hydrogen content in the chlorine gas is within the explosion limit, it may explode at any time under light or heat), the safe operation of the production system cannot be ensured.

[0003] When conducting online detection of chlorine purity, a commonly used device is a gas chromatograph. Gas is used as a mobile phase to separate the components in the sample in a chromatographic column, and then the separated components are converted into electrical signals through a detector. Finally, a chromatogram is drawn and quantitative and qualitative analysis is performed. However, existing gas chromatographs generally have only one flow path and cannot perform different analyses at the same time. The detection accuracy of chlorine purity is not high, and the analysis is time-consuming and inefficient.

[0004] Therefore, in order to solve the above-mentioned problems of low single-channel detection accuracy, long analysis time and low analysis efficiency, a multi-channel chlorine purity online detection device can be designed. Utility Model Content

[0005] The utility model aims to provide a multi-channel chlorine purity online detection device, which solves the problems of low single-channel detection accuracy, long analysis time and low analysis efficiency in the prior art.

[0006] The technical solution of the utility model is: a multi-flow path chlorine purity online detection device, including a gas path system, a sampling system, a separation system, a detection system and a recording system;

[0007] The gas circuit system includes a pressure reducing valve, a purifier and a pressure stabilizing valve, the outlet end of the pressure reducing valve is connected to the purifier and the pressure stabilizing valve in sequence, and the outlet end of the pressure stabilizing valve is connected to flow path 1, flow path 2 and flow path 3 in sequence;

[0008] The sample injection system comprises a vaporization chamber and a sample injector, and the sample injector is arranged on the vaporization chamber;

[0009] The separation system comprises a column box and a chromatographic column, wherein the chromatographic column is installed in the column box;

[0010] The detection system includes a detector and an amplifier, the detector and the amplifier are connected with electrical signals, and the outlet ends of flow path 1, flow path 2 and flow path 3 are connected with the detector;

[0011] The recording system includes a recorder connected to an amplifier;

[0012] Flow path 1, flow path 2 and flow path 3 all include a vaporization chamber, an injector, a column box and a chromatographic column.

[0013] The three gasification chambers are all connected to the pressure-stabilizing valve through pipelines, and switch valves are installed on the pipelines.

[0014] The injector is a rotary six-way valve or a pointed micro-injector.

[0015] The outsides of flow path 1, flow path 2 and flow path 3 are connected with a constant temperature box, and the vaporization chamber, the injector, the column box, the chromatographic column and the detector are all installed in the constant temperature box.

[0016] All three columns are connected to the detector.

[0017] The vaporization chamber is made of a stainless steel tube with a heating wire wrapped around the outside of the tube.

[0018] The chromatographic column is a packed column or a capillary column, and the column material is metal, glass, fused quartz or polytetrafluoroethylene.

[0019] The purifier comprises a purification outer shell connected to the pressure regulating valve through a pipeline, a limit ring is fixedly connected in the purification outer shell, a filter screen is installed at the left end of the limit ring, and a detachable end cover is installed at the left end of the purification outer shell.

[0020] Beneficial effects of the utility model:

[0021] The utility model adopts a multi-flow path design, which has higher detection accuracy for chlorine purity, greatly shortens analysis time, and improves analysis efficiency. Different chromatographic columns and detectors are used on different flow paths, which can perform a more comprehensive analysis of the sample. Different chromatographic columns and detectors cooperate with each other, which can effectively avoid mutual interference between certain compounds and other components, thereby improving the separation effect and ensuring data accuracy. The multi-flow path can also reduce the analysis time and achieve efficient analysis. By performing several analyses on different flow paths at the same time, such as detecting multiple indicators at the same time, the same sample can obtain comprehensive analysis results in a short time, thereby improving analysis efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first three-dimensional structure of the multi-flow path chlorine purity online detection device of the utility model after removing the thermostatic box;

[0023] Figure 2 This is a schematic diagram of the second three-dimensional structure of the multi-flow path chlorine purity online detection device of the utility model after removing the thermostatic box;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the multi-flow path chlorine purity online detection equipment of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of the column box in the multi-flow path chlorine purity online detection equipment of the utility model;

[0026] Figure 5 This is a schematic diagram of the multi-flow path structure of the multi-flow path chlorine purity online detection equipment of the utility model;

[0027] Figure 6 This is a working principle diagram of the multi-flow path chlorine purity online detection equipment of the utility model;

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the purifier of the multi-flow path chlorine purity online detection equipment of the utility model.

[0029] In the figure: 1. pressure reducing valve; 2. purifier; 201. purification outer shell; 202. limit ring; 203. filter screen; 204. end cover; 3. pressure regulating valve; 4. flow path one; 5. flow path two; 6. flow path three; 601. vaporization chamber; 602. injector; 603. column box; 604. chromatographic column; 7. detector; 8. amplifier; 9. recorder; 10. constant temperature box. DETAILED DESCRIPTION

[0030] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0031] See also Figure 1-Figure 7 , the utility model provides an embodiment: a multi-flow path chlorine purity online detection device, including a gas path system, a sampling system, a separation system, a detection system and a recording system;

[0032] The gas circuit system includes a pressure reducing valve 1, a purifier 2 and a pressure stabilizing valve 3, the outlet end of the pressure reducing valve 1 is connected to the purifier 2 and the pressure stabilizing valve 3 in sequence, and the outlet end of the pressure stabilizing valve 3 is connected to the flow path 1 4, the flow path 2 5 and the flow path 3 6 in sequence;

[0033] The sample injection system includes a vaporization chamber 601 and a sample injector 602, and the sample injector 602 is arranged on the vaporization chamber 601;

[0034] The separation system includes a column box 603 and a chromatographic column 604, wherein the chromatographic column 604 is installed in the column box 603;

[0035] The detection system includes a detector 7 and an amplifier 8, and the detector 7 and the amplifier 8 are electrically connected; the outlet ends of the flow path 1 4, the flow path 2 5 and the flow path 3 6 are connected to the detector 7;

[0036] The recording system includes a recorder 9, which is connected to an amplifier 8;

[0037] Flow path 1 4 , flow path 2 5 and flow path 3 6 all include a vaporization chamber 601 , an injector 602 , a column box 603 and a chromatographic column 604 .

[0038] The three gasification chambers 601 are all connected to the pressure-stabilizing valve 3 through pipelines, and a switch valve is installed on the pipeline. The injector 602 is a rotary six-way valve or a pointed micro-injector.

[0039] At the same time, the outside of flow path 1 4 , flow path 2 5 and flow path 3 6 are connected to a constant temperature box 10 , and the vaporization chamber 601 , the injector 602 , the column box 603 , the chromatographic column 604 and the detector 7 are all installed in the constant temperature box 10 , and the three chromatographic columns 604 are all connected to the detector 7 .

[0040] In addition, the vaporization chamber 601 is made of a stainless steel tube with a heating wire wound around the outside of the tube. The chromatographic column 604 is a filling column or a capillary column, and the column material is metal, glass, fused quartz or polytetrafluoroethylene. The purifier 2 includes a purification outer shell 201 connected to the pressure regulating valve 3 through a pipeline, and a limit ring 202 is fixedly connected inside the purification outer shell 201. A filter screen 203 is installed at the left end of the limit ring 202, and a detachable end cover 204 is installed at the left end of the purification outer shell 201.

[0041] During operation, the carrier gas is supplied to flow path 1 4, flow path 2 5 and flow path 3 6 through the pressure reducing valve 1, the purifier 2 and the pressure stabilizing valve 3. The vaporization chamber 601 and the injector 602 are responsible for introducing the sample into the chromatographic column 604. The chromatographic column 604 in the column box 603 separates the various components in the sample. The detector 7 detects the separated components and converts them into electrical signals, which are transmitted to the recorder 9 through the amplifier 8. The recorder 9 records and analyzes these electrical signals to generate a chromatogram.

[0042] Through the above steps, a multi-flow design is adopted, the detection accuracy of chlorine purity is higher, the analysis time is greatly shortened, and the analysis efficiency is improved. Different chromatographic columns and detectors are used on different flow paths, so that a more comprehensive analysis of the sample can be performed. Different chromatographic columns and detectors cooperate with each other, which can effectively avoid certain compounds from interfering with other components, so as to solve the problems of low detection accuracy, long analysis time and low analysis efficiency of a single flow path.

Claims

1. A multi-channel chlorine purity online detection device, comprising a gas path system, a sampling system, a separation system, a detection system and a recording system, characterized in that: The gas path system comprises a pressure reducing valve (1), a purifier (2) and a pressure stabilizing valve (3); the outlet end of the pressure reducing valve (1) is connected to the purifier (2) and the pressure stabilizing valve (3) in sequence, and the outlet end of the pressure stabilizing valve (3) is connected to flow path 1 (4), flow path 2 (5) and flow path 3 (6) in sequence; The sample injection system comprises a vaporization chamber (601) and a sample injector (602), wherein the sample injector (602) is arranged on the vaporization chamber (601); The separation system comprises a column box (603) and a chromatographic column (604), wherein the chromatographic column (604) is installed in the column box (603); The detection system comprises a detector (7) and an amplifier (8), the detector (7) and the amplifier (8) are electrically connected, and the outlet ends of the flow path 1 (4), the flow path 2 (5) and the flow path 3 (6) are connected to the detector (7); The recording system comprises a recorder (9), and the recorder (9) is connected to the amplifier (8); The flow path one (4), flow path two (5) and flow path three (6) all include a vaporization chamber (601), an injector (602), a column box (603) and a chromatographic column (604).

2. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The three gasification chambers (601) are all connected to the pressure-stabilizing valve (3) via pipelines, and a switch valve is installed on the pipelines.

3. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The sample injector (602) is a rotary six-way valve or a pointed micro-injector.

4. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The outsides of the flow path 1 (4), the flow path 2 (5) and the flow path 3 (6) are connected to a constant temperature box (10), and the vaporization chamber (601), the injector (602), the column box (603), the chromatographic column (604) and the detector (7) are all installed in the constant temperature box (10).

5. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The three chromatographic columns (604) are all connected to the detector (7).

6. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The vaporization chamber (601) is made of a stainless steel tube, and a heating wire is wound around the outside of the tube.

7. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The chromatographic column (604) is a packed column or a capillary column, and the column material is metal, glass, fused quartz or polytetrafluoroethylene.

8. A multi-channel chlorine purity online detection device according to claim 1, characterized in that: The purifier (2) comprises a purification outer shell (201) connected to the pressure-stabilizing valve (3) via a pipeline, a limit ring (202) is fixedly connected inside the purification outer shell (201), a filter screen (203) is installed at the left end of the limit ring (202), and a detachable end cover (204) is installed at the left end of the purification outer shell (201).

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