CN216771209U - Automatic natural gas sample collecting device - Google Patents
Automatic natural gas sample collecting device Download PDFInfo
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- CN216771209U CN216771209U CN202220059129.XU CN202220059129U CN216771209U CN 216771209 U CN216771209 U CN 216771209U CN 202220059129 U CN202220059129 U CN 202220059129U CN 216771209 U CN216771209 U CN 216771209U
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Abstract
A natural gas sample automatic acquisition device relates to the field of natural gas, and aims to meet the requirements of automatic acquisition of natural gas samples in the process of accurate measurement of natural gas energy and reliable measurement of natural gas heat values, and comprises an accumulated gas sample acquisition device, a gas circuit control unit, an MCU (microprogrammed control unit) control unit and a gas sample storage unit; the natural gas sample collecting branch pipeline is communicated with the gas inlet of the chromatographic analysis unit through a first gas outlet of the accumulated gas sample collecting device; the gas circuit control unit is used for controlling the accumulated gas sample collecting device 10 to collect gas samples; the signal input or output end of the gas circuit control unit is connected with the signal output or input end of the MCU control unit; and the signal input or output end of the chromatographic analysis unit of the MCU control unit is connected with the signal output or input end of the chromatographic analysis unit. The utility model is suitable for automatic collection of natural gas samples in the process of accurate measurement of natural gas energy and reliable measurement of the heat value of natural gas.
Description
Technical Field
The utility model relates to the field of natural gas, in particular to a natural gas sample collection technology.
Background
The natural gas refers to all gases naturally existing in nature, and comprises various gases formed in natural processes in an atmospheric space, a water space and a rock space, including oil field gas, gas field gas, mud volcanic gas, coal bed gas, biogenetic gas and the like. The definition of "natural gas" which has been common for a long time is a narrow definition from the energy point of view, and refers to a mixture of hydrocarbon and non-hydrocarbon gases which are naturally trapped in the formation.
At present, the equipment for measuring the heat value in the natural gas energy measuring scheme mainly uses a gas chromatographic analyzer for real-time analysis or uses a continuous accumulative sampler for gas sample collection, and the collected accumulative gas sample is conveyed to a laboratory for component analysis and heat value calculation.
However, a gas chromatographic analyzer is used for calculating the heat value, the analyzed gas sample is a real-time gas sample in a gas transmission pipeline, the gas sample is just a sample at a certain time point, and is not representative, and the analysis result can effectively monitor the quality of natural gas but cannot be used as heat value data of energy measurement; and although the continuous accumulation sampler can realize the collection of the whole gas sample in a specified period, the analysis and the transportation of the gas sample are difficult, an analysis laboratory needs to be established and the gas sample is transported to the laboratory for analysis, and the transportation of the gas sample as a hazardous chemical substance is difficult.
Therefore, there is a need for an automatic acquisition device for natural gas sample data to achieve accurate measurement of natural gas energy and reliable measurement of natural gas calorific value.
Disclosure of Invention
The utility model provides the automatic natural gas sample collecting device in order to meet the requirements of automatic collection of the natural gas sample in the process of accurate measurement of natural gas energy and reliable measurement of the heat value of natural gas.
The technical scheme is as follows:
the automatic natural gas sample collecting device comprises a natural gas pipeline 1, a natural gas sample collecting branch pipeline 2 and a chromatographic analysis unit 3, wherein a gas outlet is formed in the natural gas pipeline 1, and a gas inlet of the natural gas sample collecting branch pipeline 2 is communicated with the gas outlet in the natural gas pipeline 1; the gas outlet of the natural gas sample collecting branch pipeline 2 is communicated with the gas inlet of the chromatographic analysis unit 3; the chromatographic analysis unit (3) is used for identifying the chromatogram of the natural gas, and the automatic natural gas sample data acquisition device further comprises an accumulated gas sample acquisition device 10, a gas circuit control unit 4, an MCU control unit 5 and a gas sample storage unit 9;
the natural gas sample collection branch pipeline 2 is communicated with the gas inlet of the chromatographic analysis unit 3 through a first gas outlet of the accumulated gas sample collection device 10;
the gas path control unit 4 is used for controlling the accumulated gas sample collection device 10 to collect gas samples;
the signal input or output end of the gas circuit control unit 4 is connected with the signal output or input end of the MCU control unit 5;
the signal input or output end of the chromatographic analysis unit of the MCU control unit 5 is connected with the signal output or input end of the chromatographic analysis unit 3;
and the air inlet of the gas sample storage unit 9 is communicated with the second air outlet of the accumulated gas sample acquisition device 10.
The utility model has the beneficial effects that: the utility model realizes the automatic collection of the natural gas sample and provides a premise and a basis for the accurate measurement of the energy of the natural gas and the reliable measurement of the heat value of the natural gas.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the accumulated gas sample collecting apparatus 10.
Detailed Description
In a first specific embodiment, the first specific embodiment is described with reference to fig. 1, and the automatic natural gas sample collecting device includes a natural gas pipeline 1, a natural gas sample collecting branch pipeline 2 and a chromatographic analysis unit 3, wherein an air outlet is formed in the natural gas pipeline 1, and an air inlet of the natural gas sample collecting branch pipeline 2 is communicated with an air outlet in the natural gas pipeline 1; the gas outlet of the natural gas sample collecting branch pipeline 2 is communicated with the gas inlet of the chromatographic analysis unit 3; the chromatographic analysis unit 3 is used for identifying the chromatogram of the natural gas, and the automatic natural gas sample data acquisition device further comprises an accumulated gas sample acquisition device 10, a gas circuit control unit 4, an MCU control unit 5 and a gas sample storage unit 9;
the natural gas sample collection branch pipeline 2 is communicated with the gas inlet of the chromatographic analysis unit 3 through a first gas outlet of the accumulated gas sample collection device 10;
the gas path control unit 4 is used for controlling the accumulated gas sample collection device 10 to collect gas samples;
the signal input or output end of the gas circuit control unit 4 is connected with the signal output or input end of the MCU control unit 5;
the signal input or output end of the chromatographic analysis unit of the MCU control unit 5 is connected with the signal output or input end of the chromatographic analysis unit 3;
and the air inlet of the gas sample storage unit 9 is communicated with the second air outlet of the accumulated gas sample acquisition device 10.
The working principle is as follows: the design adopts a structure of a gas chromatography analysis module, accumulative sampling and gas circuit control, so that the gas source quality supervision requirement is met while real-time gas chromatography analysis is carried out, automatic collection and automatic analysis of accumulative gas samples are realized through gas circuit control, and accurate and reliable heat value data are provided for natural gas energy metering.
The automatic natural gas sample collecting device in the second embodiment and the first embodiment is different from the automatic natural gas sample collecting device in the first embodiment in that the automatic natural gas sample collecting device further comprises a data storage unit 8, and a data storage signal input or output end of the data storage unit 8 is connected with a data storage signal output or input end of the MCU control unit 5.
Third embodiment, this embodiment and second embodiment the accumulated gas sample collecting device 1 includes a first electronic control valve V1, a second electronic control valve V2, a third electronic control valve V3, a fourth electronic control valve V4, a fifth electronic control valve V5, a sixth electronic control valve V6, and an air pump,
the gas inlet of the first electric control valve V1 and the gas inlet of the second electric control valve V2 are gas sample gas inlets of an accumulated gas sample collecting device 10, the gas sample gas inlets are communicated with a gas outlet of a natural gas sample collecting branch pipeline 2, the gas outlet of the first electric control valve V1 is communicated with a gas inlet of the second electric control valve V2, the gas outlet of the first electric control valve V1 is communicated with a gas inlet of a third electric control valve V3, the gas outlet of the third electric control valve V3 is communicated with a gas inlet of a fourth electric control valve V4, the gas outlet of the second electric control valve V2 is communicated with a gas inlet of a fourth electric control valve V4, the gas outlet of the second electric control valve V2 is a gas outlet of the accumulated gas sample collecting device 10, the gas outlet of the gas sample storage unit 9 is communicated with a gas inlet of a sixth electric control valve V6, the gas outlet of the sixth electric control valve V6 is communicated with a gas inlet of the fifth electric control valve V5, the second air outlet of the third electric control valve V3 is the first air outlet of the accumulated gas sample collecting device 10, and the air outlet of the sixth electric control valve V6 is communicated with the air inlet of the air pump.
In the present embodiment:
the gas chromatographic analysis module carries out the real-time gas sample analysis principle, and specifically comprises the following steps:
a gas sample enters the chromatographic analysis module 3 from the gas inlet 1 through the first electric control valve V1 and the third electric control valve V3 for real-time gas sample analysis, and a sample gas outlet of the chromatographic analysis module is communicated with air through the fifth electric control valve V5 for exhaust.
The accumulated gas sample collection principle specifically comprises the following steps:
the gas sample enters a gas sample storage unit from the gas inlet 2 through a second electric control valve V2 and a fourth electric control valve V4, the other end of the gas sample storage unit 9 is connected with the air pump through a sixth electric control valve V6, the MCU control unit 5 performs data interaction with the air pump to control the flow rate, and the automatic collection of the accumulated gas sample is realized according to a set mode.
Claims (3)
1. The automatic natural gas sample collecting device comprises a natural gas pipeline (1), a natural gas sample collecting branch pipeline (2) and a chromatographic analysis unit (3), wherein a gas outlet is formed in the natural gas pipeline (1), and a gas inlet of the natural gas sample collecting branch pipeline (2) is communicated with the gas outlet in the natural gas pipeline (1); the gas outlet of the natural gas sample collection branch pipeline (2) is communicated with the gas inlet of the chromatographic analysis unit (3); the chromatographic analysis unit (3) is used for identifying the chromatogram of the natural gas, and is characterized in that: the automatic natural gas sample data acquisition device also comprises an accumulated gas sample acquisition device (10), a gas circuit control unit (4), an MCU control unit (5) and a gas sample storage unit (9);
the natural gas sample collection branch pipeline (2) is communicated with the gas inlet of the chromatographic analysis unit (3) through a first gas outlet of the accumulated gas sample collection device (10);
the gas circuit control unit (4) is used for controlling the accumulated gas sample collection device (10) to collect gas samples;
the signal input or output end of the gas circuit control unit (4) is connected with the signal output or input end of the MCU control unit (5);
the signal input or output end of the chromatographic analysis unit of the MCU control unit (5) is connected with the signal output or input end of the chromatographic analysis unit (3);
and the air inlet of the gas sample storage unit (9) is communicated with the second air outlet of the accumulated gas sample collecting device (10).
2. The automatic natural gas sample collection device according to claim 1, further comprising a data storage unit (8), wherein the data storage signal input or output end of the data storage unit (8) is connected with the data storage signal output or input end of the MCU control unit (5).
3. The automatic natural gas sample collection device according to claim 2, wherein the accumulated gas sample collection device (10) comprises a first electric control valve (V1), a second electric control valve (V2), a third electric control valve (V3), a fourth electric control valve (V4), a fifth electric control valve (V5), a sixth electric control valve (V6) and an air pump,
the air inlet of No. one automatically controlled valve (V1) and the air inlet of No. two automatically controlled valves (V2) are the gas appearance air inlet of accumulation gas appearance collection system (10), the gas appearance air inlet communicates with the gas outlet of natural gas appearance collection branch pipe way (2), the gas outlet of No. one automatically controlled valve (V1) and the air inlet intercommunication of No. two automatically controlled valves (V2), the gas outlet of No. one automatically controlled valve (V1) and the air inlet intercommunication of No. three automatically controlled valves (V3), the gas outlet of No. three automatically controlled valves (V3) and the air inlet intercommunication of No. four automatically controlled valves (V4), the gas outlet of No. two automatically controlled valves (V2) and the air inlet intercommunication of No. four automatically controlled valves (V4), the gas outlet of No. two automatically controlled valves (V2) is the gas outlet of accumulation gas appearance collection system (10), the gas outlet of gas appearance storage unit (V869) with the automatically controlled valve (V6) of No. six communicates, no. six gas outlets of automatically controlled valve (V6) with the air inlet intercommunication of No. five automatically controlled valve (V5), No. two gas outlets of No. three automatically controlled valve (V3) are the gas outlet of accumulation gas appearance collection system (10), the gas outlet of No. six automatically controlled valve (V6) and the air inlet intercommunication of air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220059129.XU CN216771209U (en) | 2022-01-11 | 2022-01-11 | Automatic natural gas sample collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220059129.XU CN216771209U (en) | 2022-01-11 | 2022-01-11 | Automatic natural gas sample collecting device |
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| Publication Number | Publication Date |
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| CN216771209U true CN216771209U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220059129.XU Active CN216771209U (en) | 2022-01-11 | 2022-01-11 | Automatic natural gas sample collecting device |
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| CN (1) | CN216771209U (en) |
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- 2022-01-11 CN CN202220059129.XU patent/CN216771209U/en active Active
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