CN113640071A - Low temperature liquefied natural gas sample sampling device - Google Patents
Low temperature liquefied natural gas sample sampling device Download PDFInfo
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- CN113640071A CN113640071A CN202110796647.XA CN202110796647A CN113640071A CN 113640071 A CN113640071 A CN 113640071A CN 202110796647 A CN202110796647 A CN 202110796647A CN 113640071 A CN113640071 A CN 113640071A
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- natural gas
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- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 54
- 238000005070 sampling Methods 0.000 title claims abstract description 41
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 22
- 239000003345 natural gas Substances 0.000 claims abstract description 13
- 238000002309 gasification Methods 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910001868 water Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a low-temperature liquefied natural gas sample sampling device which comprises an interface part, a U-shaped liquid-collecting vacuum tube, a sampling port, a gasification device and a storage device, wherein the interface part is connected with a liquid-adding gun of a liquefied natural gas filling station through a quick connector, the liquid-adding gun is provided with a liquid-adding gun circulating pump to realize the closed-loop flow and mixing of samples by sequentially passing through a liquid-adding gun filling port, the U-shaped liquid-collecting vacuum tube and an air return port, the sampling port is embedded in the U-shaped liquid-collecting vacuum tube to realize the interval sampling of natural gas, the liquefied natural gas is uniformly gasified in the gasification device, and the gasified natural gas is stored in a gas storage tank through a conveying pipeline. The invention solves the defect that the evaporation loss of the components of the sample sampled by the existing sampler does not have representativeness, can realize the off-line sampling of the low-temperature liquefied natural gas, can ensure that the sampled sample has no evaporation loss of the components, ensures that the obtained sample natural gas has representativeness, and is convenient for the spot inspection of the liquefied natural gas commodity in the market circulation field.
Description
Technical Field
The invention relates to a liquefied natural gas sampler, in particular to a low-temperature liquefied natural gas sample sampling device.
Background
The liquefied natural gas is a combustible gas naturally extracted from a gas field, mainly comprises methane, and further comprises ethane, propane, total butane, total pentane, carbon dioxide, carbon monoxide, hydrogen sulfide, water and the like, the density of the natural gas is generally 640-750 g/m, the relative density of the natural gas relative to air is 0.55-0.62, the liquefied natural gas is condensed into liquid by cooling gaseous natural gas to-162 ℃ under normal pressure, and the storage and transportation space can be greatly saved after the natural gas is liquefied, and the liquefied natural gas has the characteristics of large heat value, high performance and the like. Liquefied natural gas is more and more favored as a clean and efficient energy source, the existing liquefied natural gas is mainly stored by adopting a cryogenic liquid storage tank, the liquid storage tank is double-wall vacuum powder heat insulation, the existing liquefied natural gas sampling device mainly depends on import, the existing sampling devices are all on-line sampling devices of the liquefied natural gas, and the sampling requirement of product quality sampling of a liquefied natural gas LNG filling station in the market can not be met; in addition, as the Liquefied Natural Gas (LNG) is liquid and consists of different components, the components with low boiling points are firstly evaporated along with the rise of the temperature; the LNG sampling method mainly solves the problems of fractionation of low-temperature LNG components and representative sampling of LNG components in the market circulation field aiming at the problems existing in the sampling process of an LNG gas station. Therefore, the invention provides a sampling device for a low-temperature liquefied natural gas, which can realize off-line sampling of the liquefied natural gas.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a sampling device for a cryogenic liquefied natural gas sample.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a low temperature liquefied natural gas sample sampling device, includes interface unit, U type liquid vacuum tube, sample connection, gasification equipment and storage device, the interface unit passes through quick-operation joint and is connected with liquefied natural gas filling station liquid feeding rifle, the liquid feeding rifle is provided with liquid feeding rifle circulating pump and realizes that liquefied natural gas loops through liquid feeding rifle filler, U type liquid vacuum tube, return-air inlet and realizes that the closed loop of sample flows and mixes, inlay in the U type liquid vacuum tube in the sample connection, can realize the interval sampling of natural gas, gasification equipment is the heater, be provided with first pipeline between U type liquid vacuum tube and the heater, liquefied natural gas is evenly gasified in the heater in the twinkling of an eye, the natural gas after the gasification is stored in the gas holder through pipeline.
In the sampling device for the low-temperature liquefied natural gas sample, the U-shaped liquid-collecting vacuum tube is provided with the gas return port and the filling port.
In the sampling device for the low-temperature liquefied natural gas sample, the heater is a water bath heater.
The low-temperature liquefied natural gas sample sampling device is characterized in that the first conveying pipeline is provided with a low-temperature depressurization regulating valve and a low-temperature check valve, the first conveying pipeline is provided with a side branch pipe, and the side branch pipe is provided with a vacuum safety valve and a vacuum pipe residual liquid emptying valve.
According to the low-temperature liquefied natural gas sample sampling device, the second conveying pipeline is provided with the gas storage stop valve, the second conveying pipeline is provided with the side branch pipe, and the side branch pipe is provided with the pipeline safety valve.
Foretell low temperature liquefied natural gas sample sampling device, the anterior gas storage stop valve of gas holder, gas holder and the gas check valve that gets at gas holder rear portion constitute storage device jointly.
According to the sampling device for the low-temperature liquefied natural gas sample, the vacuum safety valve and the pipeline safety valve can be used for centralized emptying.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a sampling device for a low-temperature liquefied natural gas sample, which solves the defect that evaporation loss of components of a sample sampled by the conventional sampler does not have representativeness, can realize off-line sampling of the low-temperature liquefied natural gas, and can ensure that the sample has no evaporation loss of components, so that the obtained sample natural gas has representativeness and is convenient for sampling inspection of liquefied natural gas commodities in the field of market circulation.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the present invention.
In the figure, 1, a U-shaped liquid-producing vacuum tube, 2, an air return port, 3, a filling port, 4, a first conveying pipeline, 5, a vacuum safety valve, 6, a vacuum tube residual liquid emptying valve, 7, a low-temperature pressure reduction regulating valve, 8, a low-temperature check valve, 9, a heater, 10, a second conveying pipeline, 11, a pipeline safety valve, 12, a gas storage stop valve, 13, a gas storage tank and 14, a gas taking stop valve are arranged.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a low temperature liquefied natural gas sample sampling device, includes interface unit, U type liquid vacuum tube 1, sample connection, gasification equipment and storage device, the interface unit passes through quick-operation joint and is connected with liquefied natural gas filling station liquid feeding rifle, the liquid feeding rifle is provided with liquid feeding rifle circulating pump and realizes that liquefied natural gas loops through liquid feeding rifle filler 3, U type liquid vacuum tube 1, return air port 2 and realize the closed loop of sample and flow and mix, inlay in U type liquid vacuum tube 1 in the sample connection, can realize the interval sampling of natural gas, be provided with first pipeline 4 between U type liquid vacuum tube 1 and the heater 9, gasification equipment is heater 9, liquefied natural gas evenly gasifies in heater 9 in the twinkling of an eye, the natural gas after the gasification is stored in gas holder 13 through pipeline.
Further, the U-shaped liquid-producing vacuum tube 1 is provided with an air return port 2 and a filling port 3.
Further, the heater 9 is a water bath heater.
Further, a low-temperature pressure reduction regulating valve 7 and a low-temperature check valve 8 are arranged on the first conveying pipeline 4, a side branch pipe is arranged on the first conveying pipeline 4, and a vacuum safety valve 5 and a vacuum pipe residual liquid emptying valve 6 are arranged on the side branch pipe.
Further, a gas storage stop valve 12 is arranged on the second conveying pipeline 10, a side branch pipe is arranged on the second conveying pipeline 10, and a pipeline safety valve 11 is arranged on the side branch pipe.
Further, the air storage tank 13, the air storage stop valve 12 at the front part of the air storage tank 13 and the air taking stop valve 14 at the rear part of the air storage tank 13 together form a storage device.
Further, the vacuum safety valve 5 and the pipeline safety valve 11 can be both centralized and emptied.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.
Claims (7)
1. A sampling device for a low-temperature liquefied natural gas sample comprises an interface part, a U-shaped liquid-collecting vacuum tube (1), a sampling port, a gasification device and a storage device, it is characterized in that the interface part is connected with a liquid filling gun of a liquefied natural gas filling station through a quick connector, the liquid feeding gun is provided with a liquid feeding gun circulating pump to realize the closed-loop flow and mixing of the liquefied natural gas through the liquid feeding gun filling port (3), the U-shaped liquid collecting vacuum tube (1) and the gas return port (2) in turn, the sampling port is embedded in a U-shaped liquid-collecting vacuum tube (1), the gasification device is a heater (9), a first conveying pipeline (4) is arranged between the U-shaped liquid-collecting vacuum tube (1) and the heater (9), the liquefied natural gas is instantly and uniformly gasified in the heater (9), and the gasified natural gas is stored in the gas storage tank (13) through the second conveying pipeline (10).
2. The cryogenic liquefied natural gas sample sampling device according to claim 1, wherein the U-shaped liquid production vacuum tube (1) is provided with a gas return port (2) and a filling port (3).
3. A cryogenic liquefied natural gas sample sampling device according to claim 1, wherein the heater (9) is a water bath heater.
4. The sampling device for the low-temperature liquefied natural gas sample according to claim 1, wherein the first transportation pipeline (4) is provided with a low-temperature depressurization regulating valve (7) and a low-temperature check valve (8), the first transportation pipeline (4) is provided with a side branch, and the side branch is provided with a vacuum safety valve (5) and a vacuum pipe residual liquid blow-down valve (6).
5. The sampling device for the liquefied natural gas at a low temperature according to claim 1, wherein the second transportation pipeline (10) is provided with a gas storage stop valve (12), the second transportation pipeline (10) is provided with a side branch pipe, and the side branch pipe is provided with a pipeline safety valve (11).
6. The sampling device for the liquefied natural gas at low temperature according to claim 1, wherein the storage tank (13), the storage stop valve (12) at the front of the storage tank (13), and the gas taking stop valve (14) at the rear of the storage tank (13) together constitute a storage device.
7. The cryogenic liquefied natural gas sampling device according to claim 1, wherein the vacuum safety valve (5) and the pipeline safety valve (11) are both capable of centralized emptying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110796647.XA CN113640071A (en) | 2021-07-14 | 2021-07-14 | Low temperature liquefied natural gas sample sampling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110796647.XA CN113640071A (en) | 2021-07-14 | 2021-07-14 | Low temperature liquefied natural gas sample sampling device |
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| CN113640071A true CN113640071A (en) | 2021-11-12 |
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| CN202110796647.XA Pending CN113640071A (en) | 2021-07-14 | 2021-07-14 | Low temperature liquefied natural gas sample sampling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567201A (en) * | 2021-06-09 | 2021-10-29 | 青岛海关技术中心 | Low temperature liquefied natural gas sample sampling device |
| CN116818428A (en) * | 2023-08-29 | 2023-09-29 | 苏州杜尔气体化工装备有限公司 | Low-temperature liquefied natural gas sample extraction device for natural gas gasification station |
Citations (6)
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|---|---|---|---|---|
| CN204228478U (en) * | 2014-11-21 | 2015-03-25 | 北京凯隆分析仪器有限公司 | Liquefied natural gas (LNG) hand-operated sampling device |
| CN106525491A (en) * | 2016-11-14 | 2017-03-22 | 成都安迪生测量有限公司 | Sampling probe of sampling device |
| CN107631905A (en) * | 2017-08-14 | 2018-01-26 | 新地能源工程技术有限公司 | A kind of LNG sampling and analyzing methods and device |
| CN207051055U (en) * | 2017-07-19 | 2018-02-27 | 益通天然气股份有限公司 | Liquefied natural gas (LNG) production sampler |
| CN207051276U (en) * | 2017-03-09 | 2018-02-27 | 中国海洋石油总公司 | Continuous sampling analytical equipment is used in a kind of LNG handling |
| CN113567201A (en) * | 2021-06-09 | 2021-10-29 | 青岛海关技术中心 | Low temperature liquefied natural gas sample sampling device |
-
2021
- 2021-07-14 CN CN202110796647.XA patent/CN113640071A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204228478U (en) * | 2014-11-21 | 2015-03-25 | 北京凯隆分析仪器有限公司 | Liquefied natural gas (LNG) hand-operated sampling device |
| CN106525491A (en) * | 2016-11-14 | 2017-03-22 | 成都安迪生测量有限公司 | Sampling probe of sampling device |
| CN207051276U (en) * | 2017-03-09 | 2018-02-27 | 中国海洋石油总公司 | Continuous sampling analytical equipment is used in a kind of LNG handling |
| CN207051055U (en) * | 2017-07-19 | 2018-02-27 | 益通天然气股份有限公司 | Liquefied natural gas (LNG) production sampler |
| CN107631905A (en) * | 2017-08-14 | 2018-01-26 | 新地能源工程技术有限公司 | A kind of LNG sampling and analyzing methods and device |
| CN113567201A (en) * | 2021-06-09 | 2021-10-29 | 青岛海关技术中心 | Low temperature liquefied natural gas sample sampling device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113567201A (en) * | 2021-06-09 | 2021-10-29 | 青岛海关技术中心 | Low temperature liquefied natural gas sample sampling device |
| CN116818428A (en) * | 2023-08-29 | 2023-09-29 | 苏州杜尔气体化工装备有限公司 | Low-temperature liquefied natural gas sample extraction device for natural gas gasification station |
| CN116818428B (en) * | 2023-08-29 | 2023-11-10 | 苏州杜尔气体化工装备有限公司 | Low-temperature liquefied natural gas sample extraction device for natural gas gasification station |
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