CN210572148U - Pretreatment system of online chromatographic analyzer - Google Patents
Pretreatment system of online chromatographic analyzer Download PDFInfo
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- CN210572148U CN210572148U CN201921282519.8U CN201921282519U CN210572148U CN 210572148 U CN210572148 U CN 210572148U CN 201921282519 U CN201921282519 U CN 201921282519U CN 210572148 U CN210572148 U CN 210572148U
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Abstract
The utility model discloses a pretreatment system of an online chromatographic analyzer, which comprises a pretreatment box body, wherein at least two paths of sample flow paths are arranged in the pretreatment box body, and a needle valve I is arranged in each path of sample flow path; the needle valve I, the sample filter I and the needle valve II are connected in sequence; the sample enters a sample dewatering and oil removing filter I after passing through a needle valve II and enters a sample gas-liquid separation tank; the outlet of the sample gas-liquid separation tank is connected into a pneumatic valve bank through a pressure gauge; the pneumatic valve group is connected with one end of the three-way ball valve, the other two ends of the three-way ball valve are respectively connected with the standard gas interface and the sample flowmeter, and the sample flowmeter is connected with the sample inlet of the online chromatographic analyzer. The utility model is suitable for the on-line chromatographic analyzer analyzes the multicomponent measurement; only a physical mode is used for filtering in the pretreatment process, and the composition of a sample is not damaged; spare connecting channels are arranged in the two or more flow paths; and the chromatographic analyzer controls the pneumatic valve group to switch flow paths.
Description
Technical Field
The utility model relates to a pretreatment systems of online chromatographic analyzer belongs to sample processing technology field.
Background
In process devices such as chemical plant power plants and the like, in order to monitor information such as component content and the like of complex samples on line, an on-line chromatographic analyzer is required to be arranged for analysis. The online chromatographic analyzer is expensive, has high requirements on installation space conditions, is limited by field environment space conditions, and has economic considerations, and a dual-flow-path or even a multi-flow-path sample is often used together for one chromatographic analyzer in online analysis pretreatment. The pretreatment also has the following functions: filtering, drying, reducing lag time, stabilizing flow, etc. In the prior pretreatment process, a pneumatic valve is used for switching a flow path, so that a sample pipeline is complicated; the sample line is not provided with dual stage filtration and redundant filtration, resulting in inadequate filtration of the sample and interruption of on-line analysis when the filter needs maintenance.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: the problem of how to ensure that the sample entering the online chromatographic analyzer has good reliability is solved.
In order to solve the technical problem, the technical scheme of the utility model is to provide a pretreatment system of an online chromatographic analyzer, which is characterized by comprising a pretreatment box body, wherein at least two paths of sample flow paths are arranged in the pretreatment box body, and a needle valve I and a needle valve III which are communicated with respective sample inlets are arranged in each path of sample flow path; the needle valve I, the sample filter I and the needle valve II are sequentially connected along the sample conveying direction; the needle valve III, the sample filter II and the needle valve IV are connected in sequence; the other two ends of the first three-way ball valve are respectively connected with one ends of a first sample water and oil removing filter and a second sample water and oil removing filter, and the other ends of the first sample water and oil removing filter and the second sample water and oil removing filter are connected with two ends of the second three-way ball valve; the other end of the three-way ball valve II is connected with an inlet of the sample gas-liquid separation tank; the liquid discharge ends of the sample gas-liquid separation tanks in all the sample flow paths are connected with each other and then connected with a liquid discharge main pipe through two ball valves; the outlet of the sample gas-liquid separation tank is connected into a pneumatic valve bank through a pressure gauge; the pneumatic valve group is connected with one end of a three-way ball valve III, the other two ends of the three-way ball valve are respectively connected with a standard gas interface and a sample flowmeter, and the sample flowmeter is connected with a sample inlet of the online chromatographic analyzer; the sample outlet of the online chromatographic analyzer is connected with the sample inlet of the pneumatic valve group through a plurality of gas source interfaces respectively, and the pneumatic valve group is connected with the torch main pipe through a check valve II; the pneumatic valve group is connected with the emptying header pipe; the online chromatographic analyzer is connected with one instrument wind interface for supplying driving gas; the number of the gas source interfaces is 1 greater than the number of the sample flow paths.
Preferably, an outlet of the sample gas-liquid separation tank in one of the sample flow paths is connected to a bypass filter through a pressure gauge, one end of the bypass filter is connected to a bypass flowmeter, the bypass flowmeter is connected to a first check valve, and the first check valve is connected to a torch main pipe; the other end of the bypass filter is connected to a pneumatic valve bank.
The utility model discloses a pneumatic valves control flow path switches, and the sample fully filters and leaves the reserve pipeline after getting into the preliminary treatment. The sample is filtered, decompressed and controlled by flow so that the sample is in a relatively stable state and meets the measurement requirements of a chromatographic analyzer.
The utility model has the characteristics of it is following: the system is suitable for an online chromatographic analyzer to analyze multi-component measurement; only a physical mode is used for filtering in the pretreatment process, and the composition of a sample is not damaged; spare connecting channels are arranged in the two or more flow paths; and the chromatographic analyzer controls the pneumatic valve group to switch flow paths.
Drawings
FIG. 1 is a schematic diagram of a preprocessing system of an online chromatograph.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
Example 1
The utility model relates to a pretreatment systems of online chromatographic analyzer, as shown in fig. 1, it includes a pretreatment box for the umbilical of carrying the sample passes the pretreatment box and links to each other with online chromatographic analyzer 26. An electric heater for heating and maintaining the temperature in the pretreatment box body at a set temperature is arranged in the pretreatment box body, and two sample flow paths, namely a sample flow path I and a sample flow path II, are arranged in the pretreatment box body.
A needle valve I1 and a needle valve III 4 communicated with respective sample inlets are respectively arranged in the sample flow path I and the sample flow path II; the needle valve I1, the sample filter I2 and the needle valve II 3 are sequentially connected along the sample conveying direction; the needle valve III 4, the sample filter II 5 and the needle valve IV 6 are connected in sequence; the second needle valve 3 and the fourth needle valve 6 are both connected with one end of a first three-way ball valve 7, the other two ends of the first three-way ball valve 7 are respectively connected with one ends of a first sample dewatering and oil removing filter 8 and a second sample dewatering and oil removing filter 9, and the other ends of the first sample dewatering and oil removing filter 8 and the second sample dewatering and oil removing filter 9 are connected with two ends of a second three-way ball valve 10; the other end of the three-way ball valve II 10 is connected with an inlet of a sample gas-liquid separation tank 11.
The liquid discharge ends of the sample gas-liquid separation tank 11 in the first sample flow path and the second sample flow path are connected with each other, and are connected with a liquid discharge manifold 19 through two ball valves 18.
The outlet of the sample gas-liquid separation tank 11 in the first sample flow path is connected to a bypass filter 13 through a pressure gauge 12, one end of the bypass filter 13 is connected to a bypass flowmeter 14, the bypass flowmeter 14 is connected to a first check valve 15, and finally the first check valve 15 is connected to a torch manifold 16. The bypass is mainly used to control the lag time. The other end of the bypass filter 13 is connected to a pneumatic valve set 17. The outlet of the sample gas-liquid separation tank 11 in the second sample flow path is connected to a pneumatic valve group 17 through a pressure gauge 12.
The pneumatic valve group 17 is connected with one end of a three-way ball valve III 20, the other two ends of the three-way ball valve 32 are respectively connected with a standard gas interface 21 and a sample flowmeter 22, and the sample flowmeter 22 is connected with a sample inlet of an online chromatographic analyzer 26; the sample outlet of the online chromatographic analyzer 26 is connected with the sample inlet of the pneumatic valve group 17 through a plurality of gas source interfaces 27 respectively, the number of the gas source interfaces 27 is 1 greater than the number of the sample flow paths, and the pneumatic valve group 17 is connected with the torch main pipe 16 through a check valve II 23; the online chromatograph 26 requires atmospheric venting, so the pneumatic valve block 17 is connected to the vent manifold 24. One instrument wind interface 25 supplies the online chromatograph 26 as drive gas.
The utility model discloses a working process does:
in the first step, sample pressure, temperature and composition information are known. The sample flow path I is connected with a sample filter I2 and a needle valve II 3 through a sample inlet I A and a needle valve I1 to ensure the flow of the sample and filter impurities in the sample; the needle valve III 4, the sample filter II 5 and the needle valve IV 6 are spare pipelines, and when the needle valve I1, the sample filter I2 and the needle valve II 3 are blocked, the spare pipelines can be directly switched to. The sample passing through the needle valve II 3 enters a three-way ball valve I7 and a sample water and oil removing filter I8 for filtering water and oil in the sample; the second sample dewatering and oil removing filter 9 is a spare filter, and can be switched to the spare filter when filter cotton in the first sample dewatering and oil removing filter 8 is blocked or needs to be replaced; and the first sample water and oil removing filter 8 enters a sample gas-liquid separation tank 11 through a second three-way ball valve 10 to perform gas-liquid separation on the sample, so that the sample is ensured to be in a gaseous state when entering a chromatographic analyzer. The sample is connected to a bypass filter 13 through a pressure gauge 12 after gas-liquid separation, the sample enters a bypass flowmeter 14 through the bypass filter 13 and then enters an emptying header pipe 16 through a one-way valve 15, the bypass is used for adjusting the lag time of the sample, when the lag time is too long, the lag time can be reduced by adjusting the bypass flowmeter, and the sample enters a pneumatic valve bank 17 after passing through the bypass to be subjected to flow path switching.
The sample flow path II enters the sample from the sample inlet II B, and the sample flow path II is the same as the front part of the sample flow path I, and the difference is that the sample enters the pneumatic valve group 17 through the pressure gauge 12 for flow path switching after gas-liquid separation.
Secondly, after the samples in the first sample flow path and the second sample flow path enter the pneumatic valve group 17, connecting the pneumatic valve group 17 with a three-way ball valve and a three-way ball valve three 20; the other two ends of the three-way ball valve three 20 are respectively connected with a standard gas interface 21 and a sample flowmeter 22, the sample flowmeter 22 is connected with a sample inlet of an online chromatographic analyzer 26, and the three-way ball valve three 20 is used for manual switching between calibration and sample measurement. The sample outlet of the online chromatographic analyzer 26 and the air source interface are respectively connected with the pneumatic valve bank 17, and the air source is used for controlling the valve bank to switch flow paths. The pneumatic valve group 17 is connected with the torch main pipe 16 through a second check valve 23; the online chromatograph 26 requires atmospheric venting, so the pneumatic valve block 17 is connected to the vent manifold 24.
If meet more complicated sample condition, if the flow path increases the utility model provides a carry out simple adjustment on the basis of system, refer to attached flow path 1, increase corresponding needle valve, sample filter, tee bend ball valve, dewatering deoiling filter, gas-liquid separation jar, pneumatic valve group module, both applicable.
Example 2
In this embodiment, 6 sample flow paths are provided in the pretreatment tank. And 7 gas source interfaces 27 are arranged between the sample outlet of the online chromatographic analyzer 26 and the sample inlet of the pneumatic valve group 17.
The rest is the same as in example 1.
Claims (3)
1. A pretreatment system of an online chromatographic analyzer is characterized by comprising a pretreatment box body, wherein at least two paths of sample flow paths are arranged in the pretreatment box body, and a needle valve I (1) and a needle valve III (4) communicated with respective sample inlets are arranged in each path of sample flow path; the needle valve I (1), the sample filter I (2) and the needle valve II (3) are sequentially connected along the sample conveying direction; the needle valve III (4), the sample filter II (5) and the needle valve IV (6) are connected in sequence; the second needle valve (3) and the fourth needle valve (6) are both connected with one end of a first three-way ball valve (7), the other two ends of the first three-way ball valve (7) are respectively connected with one ends of a first sample water and oil removing filter (8) and a second sample water and oil removing filter (9), and the other ends of the first sample water and oil removing filter (8) and the second sample water and oil removing filter (9) are connected with two ends of a second three-way ball valve (10); the other end of the three-way ball valve II (10) is connected with an inlet of a sample gas-liquid separation tank (11); the liquid discharge ends of the sample gas-liquid separation tanks (11) in all the sample flow paths are connected with each other and then connected with a liquid discharge main pipe (19) through a two-way ball valve (18); the outlet of the sample gas-liquid separation tank (11) is respectively connected into a pneumatic valve group (17) through a pressure gauge (12); the pneumatic valve group (17) is connected with one end of a three-way ball valve III (20), the other two ends of the three-way ball valve (32) are respectively connected with a standard gas interface (21) and a sample flowmeter (22), and the sample flowmeter (22) is connected with a sample inlet of an online chromatographic analyzer (26); a sample outlet of the online chromatographic analyzer (26) is connected with a sample inlet of the pneumatic valve group (17) through a plurality of gas source interfaces (27), and the pneumatic valve group (17) is connected with the torch main pipe (16) through a check valve II (23); the pneumatic valve group (17) is connected with the emptying header pipe (24); the online chromatographic analyzer (26) is connected with an instrument wind interface (25) for supplying driving gas; the number of the gas source ports (27) is 1 greater than the number of the sample flow paths.
2. The pretreatment system for an on-line chromatograph according to claim 1, wherein an outlet of the sample gas-liquid separation tank (11) in one of said sample flow paths is connected to a bypass filter (13) via a pressure gauge (12), one end of the bypass filter (13) is connected to a bypass flowmeter (14), the bypass flowmeter (14) is connected to a check valve one (15), and the check valve one (15) is connected to a flare header pipe (16); the other end of the bypass filter (13) is connected into a pneumatic valve group (17).
3. The pretreatment system for an online chromatographic analyzer according to claim 1, wherein 2 to 6 sample flow paths are provided in the pretreatment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921282519.8U CN210572148U (en) | 2019-08-07 | 2019-08-07 | Pretreatment system of online chromatographic analyzer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921282519.8U CN210572148U (en) | 2019-08-07 | 2019-08-07 | Pretreatment system of online chromatographic analyzer |
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| CN210572148U true CN210572148U (en) | 2020-05-19 |
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| CN201921282519.8U Active CN210572148U (en) | 2019-08-07 | 2019-08-07 | Pretreatment system of online chromatographic analyzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953088A (en) * | 2023-09-20 | 2023-10-27 | 眉山麦克在线设备股份有限公司 | Chromatographic and continuous analysis module combined system and method |
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2019
- 2019-08-07 CN CN201921282519.8U patent/CN210572148U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116953088A (en) * | 2023-09-20 | 2023-10-27 | 眉山麦克在线设备股份有限公司 | Chromatographic and continuous analysis module combined system and method |
| CN116953088B (en) * | 2023-09-20 | 2023-12-29 | 眉山麦克在线设备股份有限公司 | Chromatographic and continuous analysis module combined system and method |
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