CN109812691A - Sampling apparatus is used in a kind of analysis of liquefied gas - Google Patents
Sampling apparatus is used in a kind of analysis of liquefied gas Download PDFInfo
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- CN109812691A CN109812691A CN201910232758.0A CN201910232758A CN109812691A CN 109812691 A CN109812691 A CN 109812691A CN 201910232758 A CN201910232758 A CN 201910232758A CN 109812691 A CN109812691 A CN 109812691A
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- tank body
- liquefied gas
- heat
- sampling apparatus
- storage container
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Abstract
The invention belongs to gas analysis technology fields, disclose a kind of liquefied gas analysis sampling apparatus, comprising: heat-insulated storage container and heating component；The heating component is fixed in the heat-insulated storage container；Sampling valve and drain valve are provided in the heat-insulated storage container.Liquefied gas analysis provided by the invention can be realized safe and reliable liquefied gas transhipment and the analysis of efficient stable gasification air supplying operation with sampling apparatus.
Description
Technical field
The present invention relates to gas analysis technology field, in particular to sampling apparatus is used in a kind of liquefied gas analysis.
Background technique
In the techniques such as existing liquefied gas production, transhipment, requires to be sampled liquefied gas analysis, judge that its is pure
Degree.Typically at the scene, liquefied gas product splendid attire analysis instrument is then sent to by sampling container to analyze.But
Conventional liquefied gas, as liquid nitrogen, liquid oxygen, liquid argon temperature usually all in -180 degree hereinafter, containing into sampling container
Afterwards, heat absorption expansion, risk of explosion rise rapidly rapidly.In this regard, heat can also can be limited using the material for having heat-proof quality
Transmitting；But due to can not gasify rapidly, cause analysis instrument that can not obtain stable gasification stream, cause analytic process and
Unstable quality, poor reliability.
Summary of the invention
The present invention provides a kind of liquefied gas analysis sampling apparatus, solves low-temperature liquid gas sampler body point in the prior art
The technical issues of in analysis, sampling analysis explosive risk is high, can not provide stable detection air-flow.
In order to solve the above technical problems, the present invention provides a kind of liquefied gas analysis sampling apparatuses, comprising: heat-insulated storage
Deposit container and heating component；
The heating component is fixed in the heat-insulated storage container；
Sampling valve and drain valve are provided in the heat-insulated storage container.
Further, the heat-insulated storage container includes: the first tank body and the second tank body；
First tank body is fixed in second tank body, and is pumped between first tank body and second tank body
Vacuum；
The heating component is fixed in the gap of first tank body and second tank body, for heating described first
Tank body；
The sampling valve and the drain valve are separately positioned on first tank body.
Further, adiabator layer is filled in the gap of first tank body and second tank body.
Further, the adiabator layer includes: insulating glass wool.
Further, thermal radiation resistant screen is equipped on the inner wall of the outer wall of first tank body and/or second tank body.
Further, the thermal radiation resistant screen includes: aluminium foil layer.
Further, Low lift safety valve and pressure gauge are additionally provided in the heat-insulated storage container.
Further, the heat-insulated storage container includes: double-layer vacuum cylinder, top cover and bottom cover；
The top cover and the bottom cover are separately fixed at double-layer vacuum cylinder both ends, close the double-layer vacuum
Cylinder；
The sampling valve and the drain valve are fixed on the top cover；
On bottom cover described in the heating component stator.
Further, the bottom cover includes: heat conducting disk and bottom cover main body；
The heat conducting disk is fixed on the bottom cover main body on the side of the double-layer vacuum cylinder；
The heating component is fixed between the heat conducting disk and the bottom cover main body.
Further, the heating component includes: PTC semiconductor heating element.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The liquefied gas analysis sampling apparatus provided in the embodiment of the present application, using heat-insulated storage container as Low Temperature Liquid
That changes gas contains container, can sufficiently completely cut off external heat, avoids liquefied gas heat absorption excessively expansion, causes security risk；
Meanwhile by the way that heating component is arranged in heat-insulated storage container, can when carrying out gas analysis, by heats liquefied gas from
And the gas of regime flow is exported, guarantee the efficiency and reliability of analysis；Can be also overcome simultaneously due to heat-insulated storage container certainly
Heat absorption is insufficient naturally caused by the heat-insulating capability of body, can not high-efficiency gasification defect；It realizes and cleverly cooperates, reach liquefied gas
Body is stablized when transporting safety and analysis operation provides the harmony of gasification flow.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that sampling apparatus is used in liquefied gas provided by the invention analysis；
Fig. 2 is the very lucky schematic layout pattern that sampling apparatus is used in liquefied gas provided by the invention analysis；
Fig. 3 is the circuit diagram of heating component provided by the invention.
Specific embodiment
The embodiment of the present application solves low-temperature liquefaction in the prior art by providing a kind of liquefied gas analysis sampling apparatus
The technical issues of in gas sampling analysis, sampling analysis explosive risk is high, can not provide stable detection air-flow.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, a kind of liquefied gas analysis sampling apparatus, comprising: heat-insulated storage container 1 and heating component 2.
The heating component 2 is fixed in the heat-insulated storage container 1；To pass through when carrying out gas analysis
Heating operation makes liquid gas gasify rapidly, provides the gas of regime flow, promotes the efficiency and reliability of analysis operation.
Sampling valve 3 and drain valve 4 are provided in the heat-insulated storage container 1, so as to realize adopting for liquid gas
Sample and discharge.
Certainly, for the safety of container, the instrument such as safety valve 5 and pressure gauge 6 also can be set；It is no longer exhaustive herein.
Based on above-mentioned apparatus, air supplying operation is sampled and analyzed are as follows:
Container cleaning, heat-insulated storage container 1 is connected in the equipment of liquid sample point, opens the sampling valve 3 and row
Valve 4 is put, to being purged inside heat-insulated storage container 1, after continuing for some time, the drain valve 4 as described in being closed after 3 minutes, to
Container inner pressure opens the drain valve 4 after rising to 0.2MPa, and drain valve 4 is closed after pressure release；It repeats operation several times, it is right
Heat-insulated 1 residues inside of storage container completes replacement Treatment, avoids pollution.
Formal acquisition cryogenic liquid, emerge at the drain valve 4 liquid when show to have acquired inside heat-insulated storage container 1
To enough liquid, the sampling valve 3 and the drain valve 4 are closed, completes sampling.
It sends sampling apparatus back to analysis room, drain valve 4 is connected to analysis or more by pipeline, then passes through heating component
Liquid gas in the 2 heat-insulated storage containers 1 of heating makes cryogenic liquid heat absorption slowly gasification in device, gradually forms stable gas
Change output gas flow.
Analyzer intake valve is adjusted, air inflow is controlled, analyzer is purged, gas is carried out after purging and is divided
Analysis.
After analysis, cutting heating component 2 is powered, and stops the heating to cryogenic liquid；The drain valve 4 is closed, is taken off
Open the pipeline being connected with analyzer.
After use, by outside sampling apparatus holding chamber, drain valve 4 is opened, makes remaining cryogenic liquid in device natural
Evaporation shows that device inner cryogenic liquid has been gasified totally discharge, closing drain valve 4 when there is no gas to emerge at valve 4 to be discharged.
It is worth noting that the application contains container as sampling by using the container for having heat-insulating capability, can keep away
The problem of exempting from the rapid heat absorption expansion of existing conventional sampling container causes security risk to be increased sharply；Meanwhile it is right by heating component 2
Liquid gas in container is heated, and can realize stable gasification when analyzing operation, exports stable flow convenient for dividing
Analysis operation, additionally it is possible to make up the slow defect of heat-insulated container nature endothermic gasification, guarantee the efficiency and reliability of analysis.
The structure of above-mentioned component will be described in detail below.
The heat-insulated storage container 1 includes: the first tank body 11 and the second tank body 12；First tank body 11 is fixed on institute
It states in the second tank body 12, and is evacuated between first tank body 11 and second tank body 12；The heating component 2 is fixed
In the gap of first tank body 11 and second tank body 12, for heating first tank body 11；The sampling valve 3 with
And the drain valve 4 is separately positioned on first tank body 11.
That is, the container of inside and outside double-layer vacuum structure is used in the application, to realize the performance of vacuum heat-insulation；Energy
The endothermic gasification degree of liquefied gas at low temp is enough greatly reduced.
In general, the heat-insulated storage container 1, which can be used, other has double layer hollow insulation construction container.
In order to further enhance heat-insulating capability, filled with guarantor in the gap of first tank body 11 and second tank body 12
Adiabator layer 15, further promotes thermal and insulating performance；Insulating glass wool generally can be used；Or other heat preserving and insulating materials.
Further, it is anti-that first is equipped on the inner wall of the outer wall of first tank body 11 and second tank body 12 respectively
Heat radiation screen 13 and the second protective shield of radiation 14.One layer can certainly be selected according to the actual situation.In general, described first is anti-
Aluminium foil layer can be used in heat radiation screen 13 and the second thermal radiation resistant screen 14.It can certainly be the material that other have heat-proof quality
Material.
The present embodiment additionally provides another implementation for heat-insulated storage container.
The heat-insulated storage container includes: double-layer vacuum cylinder, top cover 17 and bottom cover 18；17 He of top cover
The bottom cover 18 is separately fixed at the both ends of the double-layer vacuum cylinder, closes the double-layer vacuum cylinder；The sampling valve 3
And the drain valve 4 is fixed on the top cover 17；On bottom cover 18 described in 2 stator of heating component, definitely
It says, is fixed on side of the bottom cover 18 in barrel chamber, heat liquid gas.
Similar, in the intracorporal vacuum space of double-layer vacuum cylinder, it may also set up glass heat-insulating cotton and thermal radiation resistant
Aluminium foil；Vacuum pumping valve 16 can also be set as needed, adjusted vacuum degree.
Further, the bottom cover 18 includes: heat conducting disk and bottom cover main body；The heat conducting disk is fixed on the bottom
End cover body is on the side of the double-layer vacuum cylinder；The heating component 2 is fixed on the heat conducting disk and the bottom
Between end cover body, to heat liquid gas using the heat conducting disk as heat conducting element, be allowed to thermally equivalent.
Referring to Fig. 3, specifically, the heating component 2 includes: PTC semiconductor heating element 21；When PTC semiconductor heating
After 21 heating power of element, temperature, which is gradually increasing, to be reached its " Curie-point temperature ", at substantially 30 DEG C, naturally it is also possible to is adjusted to
Other temperature.Its resistance value increased dramatically, and electric current is greatly reduced, and heating power is caused gradually to reduce automatically, PTC semiconductor heating
The temperature of element 21 will slowly decline, and when temperature is lower than 30 DEG C of " Curie-point temperature ", resistance value starts to reduce, and electric current increases
Add, heating power is caused to increase, the temperature of semiconductor element will rise.To realize the function of A.T.C, add P
Hot temperature is controlled always at 30 DEG C or so.
The present embodiment additionally provides a kind of for controlling the circuit implementation of PTC semiconductor heating element power supply.
The circuit includes: to start switch SB1, turn off the switch SB2 and contactor 22；The PTC semiconductor heating member
Part 21 is connected to power connection 25 by the main contacts KM1 of the contactor 22, to realize the PTC semiconductor heating element
21 power on/off.
Meanwhile the main contactor 22 is provided with auxiliary node KM2 and auxiliary node KM3；Wherein, the main contactor
22 coil is also connected with the power connection 25, and connects in its power supply line as normal open switch and start switch SB1,
And the parallel branch for turning off the switch SB2 for being in series with normally closed switch is set, and the auxiliary node KM2 is connected on the branch in parallel
Between road and the coil power supply end of the main contactor 22, the on-off of parallel branch is controlled.
Therefore, when press it is described start switch SB1 after, 22 coil of main contactor obtains electric, the main contacts KM1 and institute
It states auxiliary node KM2 and is attracted conducting, so that the point of the PTC semiconductor heating element 21 is started to work, while KM2 is attracted conducting
The parallel branch, to realize that the main contactor 22 obtains electric self-sustaining, to bounce disconnection in the SB1 that starts switch
Afterwards, the main contactor 22 still it is electric, keep the PTC semiconductor heating element 21 to generate heat.
When press it is described turn off the switch SB2 when, parallel branch is disconnected, so that 22 coil losing electricity of the main contactor, described
The main contacts KM1 and auxiliary node KM2 is disconnected, thus 21 power loss of PTC semiconductor heating element；Correspondingly, when described
It turns off the switch after SB2 bounces, coil is still within power failure state, therefore the auxiliary node KM2 is remained off, thus institute
It states main contactor 22 and remains powered off state.
Of course for electrical safety is guaranteed, it is arranged first in the power supply line of the PTC semiconductor heating element 21
Second fuse Fu2 is arranged in the main contactor coil power supply line by fuse Fu1.
Meanwhile for the ease of judging working condition, the main contactor 22 is arranged auxiliary node KM3, including one normally opened
Contact and a normally-closed contact；The normally opened contact and normally-closed contact difference tandem promoter indicator light 23 and power failure lamp
24, form indicating circuit in parallel.Therefore, after main contactor 22 must be electric, the auxiliary node KM3 switching state, the starting
Indicator light 23 electric must be lighted, and 24 power loss of power failure lamp is extinguished, after 22 power loss of main contactor, the auxiliary node KM3
Switching state, 23 power loss of start indicator lamp are extinguished, and the power failure lamp 24 obtains electric light.
It referring to fig. 2, can be by the start indicator lamp 23, the power failure lamp 24, the SB1, described disconnected of starting switch
Electric switch SB2 and power connection 25 are arranged on 1 outer wall of heat-insulated storage container convenient for observation and operation.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The liquefied gas analysis sampling apparatus provided in the embodiment of the present application, using heat-insulated storage container as Low Temperature Liquid
That changes gas contains container, can sufficiently completely cut off external heat, avoids liquefied gas heat absorption excessively expansion, causes security risk；
Meanwhile by the way that heating component is arranged in heat-insulated storage container, can when carrying out gas analysis, by heats liquefied gas from
And the gas of regime flow is exported, guarantee the efficiency and reliability of analysis；Can be also overcome simultaneously due to heat-insulated storage container certainly
Heat absorption is insufficient naturally caused by the heat-insulating capability of body, can not high-efficiency gasification defect；It realizes and cleverly cooperates, reach liquefied gas
Body is stablized when transporting safety and analysis operation provides the harmony of gasification flow.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (10)
1. a kind of liquefied gas analysis sampling apparatus characterized by comprising heat-insulated storage container and heating component；
The heating component is fixed in the heat-insulated storage container；
Sampling valve and drain valve are provided in the heat-insulated storage container.
2. liquefied gas analysis sampling apparatus as described in claim 1, which is characterized in that the heat-insulated storage container packet
It includes: the first tank body and the second tank body；
First tank body is fixed in second tank body, and is pumped between first tank body and second tank body true
It is empty；
The heating component is fixed in the gap of first tank body and second tank body, for heating first tank
Body；
The sampling valve and the drain valve are separately positioned on first tank body.
3. liquefied gas as claimed in claim 2 analysis sampling apparatus, it is characterised in that: first tank body and described the
Adiabator layer is filled in the gap of two tank bodies.
4. liquefied gas as claimed in claim 3 analysis sampling apparatus, which is characterized in that the adiabator layer includes:
Insulating glass wool.
5. liquefied gas analysis sampling apparatus as claimed in claim 2, it is characterised in that: the outer wall of first tank body
And/or thermal radiation resistant screen is equipped on the inner wall of second tank body.
6. liquefied gas as claimed in claim 5 analysis sampling apparatus, which is characterized in that the thermal radiation resistant screen includes:
Aluminium foil layer.
7. liquefied gas analysis sampling apparatus as described in claim 1, it is characterised in that: in the heat-insulated storage container also
It is provided with Low lift safety valve and pressure gauge.
8. liquefied gas analysis sampling apparatus as described in claim 1, it is characterised in that: double-layer vacuum cylinder, top cover
And bottom cover；
The top cover and the bottom cover are separately fixed at double-layer vacuum cylinder both ends, close the double-layer vacuum cylinder
Body；
The sampling valve and the drain valve are fixed on the top cover；
On bottom cover described in the heating component stator.
9. liquefied gas analysis sampling apparatus as described in claim 1, which is characterized in that the bottom cover includes: thermally conductive
Disk and bottom cover main body；
The heat conducting disk is fixed on the bottom cover main body on the side of the double-layer vacuum cylinder；
The heating component is fixed between the heat conducting disk and the bottom cover main body.
10. liquefied gas analysis sampling apparatus as described in any one of claims 1 to 9, which is characterized in that the heating group
Part includes: PTC semiconductor heating element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232758.0A CN109812691A (en) | 2019-03-26 | 2019-03-26 | Sampling apparatus is used in a kind of analysis of liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910232758.0A CN109812691A (en) | 2019-03-26 | 2019-03-26 | Sampling apparatus is used in a kind of analysis of liquefied gas |
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| Publication Number | Publication Date |
|---|---|
| CN109812691A true CN109812691A (en) | 2019-05-28 |
Family
ID=66610428
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910232758.0A Pending CN109812691A (en) | 2019-03-26 | 2019-03-26 | Sampling apparatus is used in a kind of analysis of liquefied gas |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3061471B2 (en) * | 1991-02-18 | 2000-07-10 | 大阪酸素工業株式会社 | Liquid sampling device |
| CN2755401Y (en) * | 2004-12-10 | 2006-02-01 | 魏长贵 | Liquid oxygen bottle and oxygen supplier |
| CN102691881A (en) * | 2012-05-23 | 2012-09-26 | 张家港市科华化工装备制造有限公司 | Welded adiabatic gas cylinder |
| CN204477684U (en) * | 2015-01-22 | 2015-07-15 | 河北视窗玻璃有限公司 | One is applicable to SO 2the gasification installation of liquefied pot |
| CN206958597U (en) * | 2017-06-30 | 2018-02-02 | 中国石油天然气股份有限公司 | Take alkene sample storage device of heating function |
-
2019
- 2019-03-26 CN CN201910232758.0A patent/CN109812691A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3061471B2 (en) * | 1991-02-18 | 2000-07-10 | 大阪酸素工業株式会社 | Liquid sampling device |
| CN2755401Y (en) * | 2004-12-10 | 2006-02-01 | 魏长贵 | Liquid oxygen bottle and oxygen supplier |
| CN102691881A (en) * | 2012-05-23 | 2012-09-26 | 张家港市科华化工装备制造有限公司 | Welded adiabatic gas cylinder |
| CN204477684U (en) * | 2015-01-22 | 2015-07-15 | 河北视窗玻璃有限公司 | One is applicable to SO 2the gasification installation of liquefied pot |
| CN206958597U (en) * | 2017-06-30 | 2018-02-02 | 中国石油天然气股份有限公司 | Take alkene sample storage device of heating function |
Non-Patent Citations (1)
| Title |
|---|
| 高钦和等: "《机电检测与控制》", 28 February 2015 * |
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Application publication date: 20190528 |