CN106979875A - A kind of liquefied gas safety and environmental protection sampling system and method - Google Patents
A kind of liquefied gas safety and environmental protection sampling system and method Download PDFInfo
- Publication number
- CN106979875A CN106979875A CN201710263902.8A CN201710263902A CN106979875A CN 106979875 A CN106979875 A CN 106979875A CN 201710263902 A CN201710263902 A CN 201710263902A CN 106979875 A CN106979875 A CN 106979875A
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- China
- Prior art keywords
- liquefied gas
- sampling system
- open
- liquid phase
- fast joint
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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
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
-
- 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
- G01N1/2226—Sampling from a closed space, e.g. food package, head space
- G01N2001/2238—Sampling from a closed space, e.g. food package, head space the gas being compressed or pressurized
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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)
- Sampling And Sample Adjustment (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of liquefied gas safety and environmental protection sampling system and method.Sampling system of the present invention, including lng tanker, miniature liquefied gas pump and sampler, the liquid phase mouthful of the lng tanker are connected with button fast joint in first；The gas phase mouth of the lng tanker is connected with button fast joint in second；In described first in button fast joint and second button fast joint respectively with an open and close type snap joint grafting；The open and close type snap joint is realized by the gentle phase pipeline of liquid phase pipeline be connected in series with miniature liquefied gas pump and sampler respectively.The sampling system reasonable in design, can not only realize that liquefied gas unnecessary in the function of being sampled to liquefied gas, and whole sampling process can't be discharged into air, it is to avoid environment is polluted, and whole sampling method is easy to operate, easy to utilize.
Description
Technical field
The present invention relates to chemical technology field, more particularly to a kind of liquefied gas safety and environmental protection sampling system and method.
Background technology
Liquefied gas sampling operation of the prior art is as follows：Sampler is fixed on sampling line, opened successively
Sampler exhaust root valve, sampler air inlet root valve, former and later two sampling hand valves, allow liquefied gas directly to be put to idle discharge, and right
Sampler carries out gas displacement.Sampler exhaust root valve is turned off after sampler is sufficiently displaced to be sampled.Sample
Close sampler air inlet root valve, former and later two sampling hand valves successively after, finally again remove sampler.
Existing liquefied gas sampling mode has the following disadvantages：（1）Liquefied gas discharge capacity is larger, and running into naked light has combustion explosion
Danger；（2）Liquefied gas is discharged in atmosphere, and environment is polluted；（3）A large amount of discharges of liquefied gas, the waste to resource
It is very big.
The content of the invention
To solve prior art problem, the present invention provides a kind of liquefied gas safety and environmental protection sampling system and method.This method
Simple to operate, safe ready is easy to utilize.
What the present invention was realized in：
A kind of liquefied gas safety and environmental protection sampling system, including lng tanker, miniature liquefied gas pump and sampler, the liquefaction
The liquid phase mouthful of gas-tanker is connected with button fast joint in first；Button fast joint phase in the gas phase mouth of the lng tanker and second
Even；In described first in button fast joint and second button fast joint respectively with an open and close type snap joint grafting；The open and close type is fast
Quick coupling is realized by the gentle phase pipeline of liquid phase pipeline be connected in series with miniature liquefied gas pump and sampler respectively.
A kind of above-mentioned liquefied gas safety and environmental protection sampling system, scheme preferably is that the gentle phase pipeline of liquid phase pipeline is equal
For DN20 high-pressure hoses.
A kind of above-mentioned liquefied gas safety and environmental protection sampling system, scheme preferably is that the two ends of the high-pressure hose are equipped with
Connecting filament head.
A kind of above-mentioned liquefied gas safety and environmental protection sampling system, scheme preferably is that button fast joint is DN50 in described first
Interior button fast joint, the described second interior button fast joint is button fast joint in DN25.
A kind of above-mentioned liquefied gas safety and environmental protection sampling system, scheme preferably is that the open and close type snap joint is DN20
Open and close type snap joint.
A kind of above-mentioned liquefied gas safety and environmental protection sampling system, scheme preferably is that the sampler can be that liquid phase takes
One kind in sample steel cylinder and external Sampling ball valve.
A kind of above-mentioned liquefied gas safety and environmental protection sampling system, scheme preferably is, the vapor delivery line and sampler it
Between be additionally provided with a visor.
A kind of liquefied gas sampling method, for being sampled based on liquefied gas safety and environmental protection sampling system, step is as follows：
（1）First, fast joint will be detained in DN50 with tank car liquid phase mouthful to be connected, fast joint and tank car gas phase mouth phase will be detained in DN25
Connection, and grafting open and close type snap joint respectively；
（2）Open tank car gas, liquid root valve；Open miniature liquefied gas pump, drawing liquid to tank car gas phase；
（3）Liquid phase circulation 2-5min is observed by visor, tank car material in pipeline of unloading is replaced to tank car by vapor delivery line
It is interior, changed without outer be set with；
（4）It is sampled using sampler；
（5）The position of two open and close type snap joint is exchanged, miniature liquefied gas pump is opened by gas phase pipe material back suction to liquid phase mouthful；
（6）Tank car liquid phase valve is closed, button fast joint in liquid phase is pulled down, sampling is completed.
The beneficial effects of the invention are as follows：
（1）The sampling system reasonable in design, can not only realize the function of being sampled to liquefied gas, and whole sampling process
In unnecessary liquefied gas can't be discharged into air, it is to avoid environment is polluted, whole sampling method is easy to operate, just
In popularization and application；
（2）The design of open and close type snap joint in the sampling system, can effectively solve the problem that existing liquefied gas pump device is difficult to
The problem of rotating, improve the operability of sampling system.
Brief description of the drawings
Fig. 1 is liquefied gas safety and environmental protection sampling system structural representation of the present invention.
In figure：1- lng tankers, the miniature liquefied gas pumps of 2-, 3- samplers, 4- visors, 5- liquid phases mouthful, 6- gas phase mouths,
Fast joint, 9- open and close type snap joints, 10- liquid phase pipelines, 11- vapor delivery lines are detained in 7- first in button fast joint, 8- second.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Miniature liquefied gas pump model 16CQ-8 used of the invention, parameter is 220/380V, 1.8m3/ h, lift 8m.
Embodiment 1：A kind of liquefied gas safety and environmental protection sampling system, structure are as shown in figure 1, including lng tanker 1, miniature
Liquefied gas pump 2 and sampler 3, the liquid phase mouthful 5 of the lng tanker 1 are connected with button fast joint 7 in first；The liquefied gas
The gas phase mouth 6 of tank car 1 is connected with button fast joint 8 in second；Button fast joint 8 is distinguished in button fast joint 7 and second in described first
With the grafting of an open and close type snap joint 9；The open and close type snap joint 9 is realized by liquid phase pipeline 10 and vapor delivery line 11 respectively
With being connected in series for miniature liquefied gas pump 2 and sampler 3；The liquid phase pipeline 10 and vapor delivery line 11 are that DN20 high pressures are soft
Pipe；The two ends of the high-pressure hose are equipped with connecting filament head；The high-pressure hose is realized quick with open and close type by connecting filament head
Joint, miniature liquefied gas pump and sampler are connected in series；Button fast joint 7 is button fast joint, institute in DN50 in described first
It is button fast joint in DN25 to state button fast joint 8 in second；The open and close type snap joint 9 is DN20 open and close type snap joints；Institute
It can be one kind in liquid phase sampling steel cylinder and external Sampling ball valve to state sampler 3；The vapor delivery line 11 and sampler 3
Between be additionally provided with a visor 4.
A kind of liquefied gas sampling method, for being sampled based on liquefied gas safety and environmental protection sampling system, step is as follows：
（1）First, fast joint 7 will be detained in DN50 with tank car liquid phase mouthful 5 to be connected, fast joint 8 and tank car gas phase will be detained in DN25
Mouth 6 is connected, and grafting open and close type snap joint 9 respectively；
（2）Open tank car gas, liquid root valve；Open miniature liquefied gas pump 2, drawing liquid to tank car gas phase；
（3）Liquid phase circulation 2-5min is observed by visor 4, tank car material in pipeline of unloading is replaced to groove by vapor delivery line 11
In car 1, changed without outer be set with；
（4）It is sampled using sampler 3；
（5）The position of two open and close type snap joint 9 is exchanged, miniature liquefied gas pump 2 is opened by gas phase pipe material back suction to liquid phase
Mouthful；
（6）Tank car liquid phase valve is closed, button fast joint 7 and 8 in liquid phase is pulled down, sampling is completed.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (8)
1. a kind of liquefied gas safety and environmental protection sampling system, including lng tanker, miniature liquefied gas pump and sampler, its feature
It is, the liquid phase mouthful of the lng tanker is connected with button fast joint in first；The gas phase mouth of the lng tanker and second
Interior button fast joint is connected；In described first in button fast joint and second button fast joint respectively with an open and close type snap joint grafting；
The string with miniature liquefied gas pump and sampler is realized in the open and close type snap joint by the gentle phase pipeline of liquid phase pipeline respectively
Connection connection.
2. sampling system according to claim 1, it is characterised in that the gentle phase pipeline of liquid phase pipeline is DN20 high
Press flexible pipe.
3. sampling system according to claim 2, it is characterised in that the two ends of the high-pressure hose are equipped with connecting filament
Head.
4. sampling system according to claim 1, it is characterised in that button fast joint is that button connects soon in DN50 in described first
Head, the described second interior button fast joint is button fast joint in DN25.
5. sampling system according to claim 1, it is characterised in that the open and close type snap joint is that DN20 open and close types are fast
Quick coupling.
6. sampling system according to claim 1, it is characterised in that the sampler can be liquid phase sampling steel cylinder and
One kind in external Sampling ball valve.
7. sampling system according to claim 1, it is characterised in that be additionally provided between the vapor delivery line and sampler
One visor.
8. a kind of liquefied gas sampling method, for being sampled based on liquefied gas safety and environmental protection sampling system, it is characterised in that step
It is rapid as follows：
（1）First, fast joint will be detained in DN50 with tank car liquid phase mouthful to be connected, fast joint and tank car gas phase mouth phase will be detained in DN25
Connection, and grafting open and close type snap joint respectively；
（2）Open tank car gas, liquid root valve；Open miniature liquefied gas pump, drawing liquid to tank car gas phase；
（3）Liquid phase circulation 2-5min is observed by visor, tank car material in pipeline of unloading is replaced to tank car by vapor delivery line
It is interior, changed without outer be set with；
（4）It is sampled using sampler；
（5）The position of two open and close type snap joint is exchanged, miniature liquefied gas pump is opened by gas phase pipe material back suction to liquid phase mouthful；
（6）Tank car liquid phase valve is closed, button fast joint in liquid phase is pulled down, sampling is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263902.8A CN106979875A (en) | 2017-04-21 | 2017-04-21 | A kind of liquefied gas safety and environmental protection sampling system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710263902.8A CN106979875A (en) | 2017-04-21 | 2017-04-21 | A kind of liquefied gas safety and environmental protection sampling system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106979875A true CN106979875A (en) | 2017-07-25 |
Family
ID=59345564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710263902.8A Pending CN106979875A (en) | 2017-04-21 | 2017-04-21 | A kind of liquefied gas safety and environmental protection sampling system and method |
Country Status (1)
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| CN (1) | CN106979875A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341141Y (en) * | 1998-06-16 | 1999-09-29 | 牛喜华 | Sealed sampler |
| JP2000097819A (en) * | 1998-09-22 | 2000-04-07 | Tokyo Gas Co Ltd | Sampling method of lng and its device |
| CN2460982Y (en) * | 2000-12-11 | 2001-11-21 | 李忠云 | Pipeline sealing sampler |
| CN201522390U (en) * | 2009-06-29 | 2010-07-07 | 马乔军 | Automatic sampler of crude oil |
| CN102661878A (en) * | 2012-04-23 | 2012-09-12 | 张家港市江南利玛特设备制造有限公司 | Closed quick sampler |
| DE202012004228U1 (en) * | 2012-04-30 | 2013-08-01 | E.On New Build & Technology Gmbh | Device for aggregated sampling of gas |
| CN204903225U (en) * | 2015-09-09 | 2015-12-23 | 江苏新农化工有限公司 | Liquid sampling device under vacuum state |
| CN205027572U (en) * | 2015-09-18 | 2016-02-10 | 王延辉 | Crude oil sampling device |
| CN105527130A (en) * | 2014-09-30 | 2016-04-27 | 中国石油天然气股份有限公司 | Liquefied gas closed sampling system and method thereof |
-
2017
- 2017-04-21 CN CN201710263902.8A patent/CN106979875A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2341141Y (en) * | 1998-06-16 | 1999-09-29 | 牛喜华 | Sealed sampler |
| JP2000097819A (en) * | 1998-09-22 | 2000-04-07 | Tokyo Gas Co Ltd | Sampling method of lng and its device |
| CN2460982Y (en) * | 2000-12-11 | 2001-11-21 | 李忠云 | Pipeline sealing sampler |
| CN201522390U (en) * | 2009-06-29 | 2010-07-07 | 马乔军 | Automatic sampler of crude oil |
| CN102661878A (en) * | 2012-04-23 | 2012-09-12 | 张家港市江南利玛特设备制造有限公司 | Closed quick sampler |
| DE202012004228U1 (en) * | 2012-04-30 | 2013-08-01 | E.On New Build & Technology Gmbh | Device for aggregated sampling of gas |
| CN105527130A (en) * | 2014-09-30 | 2016-04-27 | 中国石油天然气股份有限公司 | Liquefied gas closed sampling system and method thereof |
| CN204903225U (en) * | 2015-09-09 | 2015-12-23 | 江苏新农化工有限公司 | Liquid sampling device under vacuum state |
| CN205027572U (en) * | 2015-09-18 | 2016-02-10 | 王延辉 | Crude oil sampling device |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |
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| RJ01 | Rejection of invention patent application after publication |