CN207851001U - A kind of novel LNG online detection instruments - Google Patents
A kind of novel LNG online detection instruments Download PDFInfo
- Publication number
- CN207851001U CN207851001U CN201820356026.3U CN201820356026U CN207851001U CN 207851001 U CN207851001 U CN 207851001U CN 201820356026 U CN201820356026 U CN 201820356026U CN 207851001 U CN207851001 U CN 207851001U
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- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 238000005070 sampling Methods 0.000 claims abstract description 71
- 239000000523 sample Substances 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 38
- 239000007791 liquid phase Substances 0.000 claims abstract description 34
- 238000001816 cooling Methods 0.000 claims abstract description 31
- 239000012071 phase Substances 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 230000001105 regulatory effect Effects 0.000 claims description 29
- 230000005520 electrodynamics Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 22
- 239000007792 gaseous phase Substances 0.000 abstract description 3
- 239000003949 liquefied natural gas Substances 0.000 description 47
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000008016 vaporization Effects 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000011005 laboratory method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model proposes a kind of novel LNG online detection instruments, including transmission belt, transmission belt is equipped at least one sampler, and transmission belt is equipped with sampling station, heating station, sample presentation station and cooling station, sampler and is moved back and forth between four stations with the operation of transmission belt；It samples station and is equipped with liquid phase probe tube, liquid phase probe tube may pass through corking component and inject liquid phase LNG into sampling box；Heating station is equipped with heating device, and heating device is for heating the liquid phase LNG in sampling box；Sample presentation station is equipped with gas phase efferent duct, and gas phase efferent duct may pass through corking component and analyze the gas phase LNG outputs in sampling box；Cooling station is equipped with cooling device, and cooling device is used to carry out cooling treatment to sampling box；The utility model can realize online serialization sample detection operation, ensure that gaseous phase outlet sampling flow is stablized, it is ensured that the accuracy of DATA REASONING.
Description
Technical field
The utility model is related to a kind of detection device, more particularly to a kind of novel LNG online detection instruments.
Background technology
Liquefied natural gas (LNG) is used as a kind of efficient green energy resource, in will be used wider and wider for China, natural gas
Liquefaction, storage and transporting equipment are also gradually improved.LNG performance test results are especially its calorific value and are to determine LNG transaction values
Important references factor, and LNG measurement of caloric value and the composition of LNG are closely related.Since LNG is compounding substances, LNG on-line checkings
The lower substance of mid-boiling point such as methane is easy evaporation.Evaporation forms gaseous substance and can be easily separated with LNG liquid phase substances, leads to LNG
The substance that continuous sampling obtains in on-line checking and true LNG material concentrations are inconsistent, and detection data deviates truthful data.Therefore
It is highly desirable the method and apparatus that exploitation can carry out accurate on-line checking to LNG.
Currently, mainly having laboratory method and field experience criterion for the LNG transports doping method of inspection of tank car.It is real
Testing room method can will be analyzed after gas or liquid sampling with chromatograph, but due to fluid density difference in tank car, layering is uneven, examination
Sample is unable to liquid distribution situation in accurate response tank car, can not estimate impurity content, and field sampling has limitation, period
Long, poor practicability.Field experience criterion actually relatively mostly uses, paid close attention to when unloading fluid temperature and tank car pressure whether
Match, or whether observation immersed pump cavitates, such method relies on experience, and live influence factor is more, uncertain big, lacks quantization
Analysis.
Patent CN201611125209.6 discloses a kind of LNG qualities device for fast detecting, including capacitance level gauge, N
A cryogenic temperature sensor and M liquid phase dielectric constant detector, wherein：N number of cryogenic temperature sensor and liquid phase dielectric constant
Detector is mounted in the main body of capacitance level gauge；Capacitance level gauge is inserted in liquid phase medium LNG from conveying trough roof end
In；N, M is positive integer, N >=2 and M >=1.The device can be used for measuring the temperature and dielectric constant of liquid in tank car,
It may determine that in LNG transport tank cars whether contain impurity according to the measured value.
Patent CN201520140670.3 discloses a kind of LNG on-line periods system, including is installed on discharging Trunk Line
Sampling jacketed pipe and cold insulation flow path and vaporization sampling flow path；The sampling jacketed pipe respectively with the cold insulation flow path and vapour
Change sampling flow path to connect by pipeline, the LNG sample transfers in the sampling jacketed pipe acquisition discharging Trunk Line are sampled to vaporization
Flow path, and detect the temperature of LNG samples；The cold insulation flow path adjusts the temperature of sampling jacketed pipe shell according to the temperature of LNG samples
Degree, and then the temperature of LNG samples is adjusted, and the boil-off gas for adjusting limitation LNG samples largely enters external BOG headers；It is described
Vaporization sampling flow path is depressured LNG samples, is heated and is buffered, and the LNG samples of vaporization are obtained, and is transferred to the confession of outer samples cabinet
Sampling analysis.
The above patent does not take measures so that does not occur gas-liquid caused by vaporizing priority during LNG vaporization always
The problem of separation, measurement result can deviate actual conditions.
Utility model content
The utility model proposes a kind of novel LNG online detection instruments, it can be achieved that on-line continuous regarding to the issue above
Sample detection operation ensure that gaseous phase outlet sampling flow is stablized, it is ensured that the accuracy of DATA REASONING.
Specific technical solution is as follows：
A kind of novel LNG online detection instruments, including transmission belt, transmission belt are equipped at least one sampler,
And transmission belt is equipped with four sampling station, heating station, sample presentation station and cooling station stations, sampler is with transmission
The operation of belt moves back and forth between four stations；
Sampler includes sampling box, piston, upper support seat and lower support base；The top of sampling box be equipped with first opening,
Its bottom is equipped with the second opening, and the first opening is equipped with corking component, and upper support seat is fixed on the bottom of sampling box, upper support seat
In be equipped with open-topped first regulating tank, the second opening is positioned at the top of the first regulating tank, and the lower section of upper support seat is to evagination
Go out to be formed a circle rest pad, piston is movably disposed in sampling box, and the stopper rod of piston passes through the second opening to be arranged first
In regulating tank, the bottom of the stopper rod of piston is equipped with push plate, is fixed on the first electric pushrod and push plate phase of the first adjusting trench bottom
Connection, the first electric pushrod control piston move in sampling box；
Lower support base is fixed on transmission belt, and lower support base is equipped with open-topped second regulating tank, and second is adjusted
The depth of slot is more than the height of rest pad, and rest pad is moving up and down to be arranged in the second regulating tank of lower support base, and second
What is extended internally at the top of regulating tank is equipped with a circle baffle, and baffle is equipped with several first grafting items, and the first grafting item is removable
Be arranged in the first limit chamber of rest pad, the bottom of rest pad is equipped with several second grafting items, and the second grafting item is removable
Be arranged in the second limit chamber of lower support base, the bottom of the second regulating tank is equipped with third regulating tank, is set in third regulating tank
There are the second electric pushrod, the second electric pushrod to be fixedly connected with upper support seat, the second electric pushrod controls upper support seat and fixation
Sampling box on upper support seat moves up and down；
It samples station and is equipped with liquid phase probe tube, liquid phase probe tube may pass through corking component and inject liquid phase into sampling box
LNG；
Heating station is equipped with heating device, and heating device is for heating the liquid phase LNG in sampling box；
Sample presentation station is equipped with gas phase efferent duct, and gas phase efferent duct may pass through corking component by the gas phase LNG in sampling box
Output is analyzed；
Cooling station is equipped with cooling device, and cooling device is used to carry out cooling treatment to sampling box.
Further, corking component includes outer tube, and the inner wall of outer tube is up-small and down-big truncated cone-shaped structure, outer tube
Inner wall be equipped with a circle second baffle and a circle third baffle, second baffle is located at the top of third baffle, in third baffle
A corking is fixed by several springs, the cross sectional shape of corking is convex shape structure, and corking is plug-type to be arranged in second gear
Between plate, corking is used for hermetically sealed case pipe, and outer tube is fixed on the first overthe openings.
Further, what is raised up at the top of corking is equipped with a circle locating ring.
Further, liquid phase probe tube and gas phase efferent duct include tube body, and the bottom of tube body is enclosuring structure, tube body bottom
If the outer wall in portion, which is equipped with, does sample opening, by going out in sample opening injection sampling box, gas phase LNG is opened liquid phase LNG by going out sample
Mouth enters in gas phase efferent duct.
Further, bellows is equipped between the second open bottom and the top of push plate, bellows-sheathed is located at piston stopper rod
Outside.
Further, liquid phase probe tube is connected with LNG storage tank, and gas phase efferent duct is connected with gaseous-mass spectrography instrument.
Further, heating device and cooling device include device case, the upstream end of device case and are left on end
It is equipped with electrodynamic induction sliding door, heater is equipped in the device case of heating device, is equipped in the device case of cooling device cold
Jelly machine.
The detection method of the utility model is as follows：
(1) when sampler is moved to sampling station, the second electric pushrod controls upper support seat and is fixed on support
Sampling box on seat is moved up, and liquid phase probe tube is inserted into outer tube, and corking is pushed, and passes through the first electric pushrod
Control piston, which moves down, extracts liquid phase LNG；
(2) when sampler is moved to heating station, sampling box enters in heating device, keeps isovolumetric heating, makes to add
Hot temperature elevation process sampling LNG pressure increases the elevation of boiling point, is evaporated without any substance.When temperature, pressure postcritical temperature
Degree and pressure after, continue heating reach it is overcritical；
(3) sampler is moved to sample presentation station, the second electric pushrod controls upper support seat and is fixed on upper support seat
On sampling box moved up, gas-phase transport pipe is inserted into outer tube, and corking is pushed, and depressurization makes pressure drop
Low, overcritical material pressure reduces, it can be made all to become gaseous state in a flash, and the piston above row of pushing away is controlled by the first electric pushrod
Go out gas phase natural gas；
(4) sampler is moved to cooling station, sampling box is cooled down, when temperature reaches -162 DEG C, cycle
Carry out next detection operation.
The beneficial effects of the utility model are：
The utility model can realize online serialization sample detection operation, ensure that gaseous phase outlet sampling flow is stablized, really
Protect the accuracy of DATA REASONING.
Description of the drawings
Fig. 1 is the utility model vertical view.
Fig. 2 is sectional view when sampler is in sampling station.
Fig. 3 is sectional view when sampler is in heating station.
Fig. 4 is sectional view when sampler is in sample presentation station.
Fig. 5 is sectional view when sampler is in cooling station.
Fig. 6 is heating device structure chart.
Fig. 7 is corking assemble cross-section in Fig. 2.
Fig. 8 is corking assemble cross-section in Fig. 4.
Specific implementation mode
It is clear to make the technical solution of the utility model be more clear, below in conjunction with the accompanying drawings to the utility model into advancing one
Step description, any technical characteristic to technical solutions of the utility model carry out the scheme that equivalencing is obtained with conventional reasoning and fall
Enter scope of protection of the utility model.
Reference numeral
Transmission belt 1, sampler 2, sampling station 3, heating station 4, sample presentation station 5, cooling station 6, sampling box 7,
Piston 8, upper support seat 9, lower support base 10, corking component 11, the first regulating tank 12, rest pad 13, push plate 14, first is electronic pushes away
Bar 15, the second regulating tank 16, baffle 17, the first grafting item 18, the second grafting item 19, third regulating tank 20, the second electric pushrod
21, liquid phase probe tube 22, heating device 23, gas phase efferent duct 24, cooling device 25, outer tube 26, second baffle 27, third gear
Plate 28, corking 30, locating ring 31, tube body 32, goes out sample opening 33, bellows 34, LNG storage tank 35, gaseous-mass spectrography at spring 29
Instrument 36, device case 37, electrodynamic induction sliding door 38.
A kind of novel LNG online detection instruments as shown in the figure, including transmission belt 1, transmission belt are equipped at least one
Sampler 2, and 6 four sampling station 3, heating station 4, sample presentation station 5 and cooling station works are sequentially on transmission belt
Position, sampler are moved back and forth with the operation of transmission belt between four stations；
Sampler includes sampling box 7, piston 8, upper support seat 9 and lower support base 10；The top of sampling box is equipped with first
Opening, its bottom are equipped with the second opening, and the first opening is equipped with corking component 11, and upper support seat is fixed on the bottom of sampling box,
Open-topped first regulating tank 12 is equipped in upper support seat, the second opening is located at the top of the first regulating tank, upper support seat
Lower section protrudes outward to form a circle rest pad 13, and piston is movably disposed in sampling box, and the stopper rod of piston is opened across second
Mouth is arranged in the first regulating tank, and the bottom of the stopper rod of piston is equipped with push plate 14, is fixed on the first electricity of the first adjusting trench bottom
Dynamic push rod 15 is connected with push plate, and the first electric pushrod control piston moves in sampling box；
Lower support base is fixed on transmission belt, and lower support base is equipped with open-topped second regulating tank 16, and second adjusts
The depth for saving slot is more than the height of rest pad, and rest pad is moving up and down to be arranged in the second regulating tank of lower support base, the
What is extended internally at the top of two regulating tanks is equipped with a circle baffle 17, and baffle is equipped with several first grafting items 18, the first grafting item
It is movably disposed in the first limit chamber of rest pad, the bottom of rest pad is equipped with several second grafting items 19, the second grafting
Item is movably disposed in the second limit chamber of lower support base, and the bottom of the second regulating tank is equipped with third regulating tank 20, third
The second electric pushrod 21 is equipped in regulating tank, the second electric pushrod is fixedly connected with upper support seat, in the control of the second electric pushrod
Support base and the sampling box being fixed on upper support seat move up and down；
It samples station and is equipped with liquid phase probe tube 22, liquid phase probe tube may pass through corking component and inject liquid phase into sampling box
LNG；
Heating station is equipped with heating device 23, and heating device is for heating the liquid phase LNG in sampling box；
Sample presentation station is equipped with gas phase efferent duct 24, and gas phase efferent duct may pass through corking component by the gas phase in sampling box
LNG outputs are analyzed；
Cooling station is equipped with cooling device 25, and cooling device is used to carry out cooling treatment to sampling box.
Further, corking component includes outer tube 26, and the inner wall of outer tube is up-small and down-big truncated cone-shaped structure, housing
The inner wall of pipe is equipped with a circle second baffle 27 and one and encloses third baffle 28, and second baffle is located at the top of third baffle, third
A corking 30 is fixed by several springs 29 on baffle, the cross sectional shape of corking is convex shape structure, and corking is plug-type to be set
It sets between second baffle, corking is used for hermetically sealed case pipe, and outer tube is fixed on the first overthe openings.
Further, what is raised up at the top of corking is equipped with a circle locating ring 31.
Further, liquid phase probe tube and gas phase efferent duct include tube body 32, and the bottom of tube body is enclosuring structure, tube body
If the outer wall of bottom, which is equipped with, does sample opening 33, liquid phase LNG is by going out in sample opening injection sampling box, and gas phase LNG is by going out
Sample opening enters in gas phase efferent duct.
Further, bellows 34 is equipped between the second open bottom and the top of push plate, bellows-sheathed is located at piston plug
The outside of bar.
Further, liquid phase probe tube is connected with LNG storage tank 35, and gas phase efferent duct is connected with gaseous-mass spectrography instrument 36
It connects.
Further, heating device and cooling device include device case 37, the upstream end of device case and leave end
On be equipped with electrodynamic induction sliding door 38, heater is equipped in the device case of heating device, is set in the device case of cooling device
There is refrigerator.
The detection method of the utility model is as follows：
(1) when sampler is moved to sampling station, the second electric pushrod controls upper support seat and is fixed on support
Sampling box on seat is moved up, and liquid phase probe tube is inserted into outer tube, and corking is pushed, and passes through the first electric pushrod
Control piston, which moves down, extracts liquid phase LNG；
(2) when sampler is moved to heating station, sampling box enters in heating device, keeps isovolumetric heating, makes to add
Hot temperature elevation process sampling LNG pressure increases the elevation of boiling point, is evaporated without any substance,.When temperature, pressure postcritical
After temperature and pressure, continue heating reach it is overcritical；
(3) sampler is moved to sample presentation station, the second electric pushrod controls upper support seat and is fixed on upper support seat
On sampling box moved up, gas-phase transport pipe is inserted into outer tube, and corking is pushed, and depressurization makes pressure drop
Low, overcritical material pressure reduces, it can be made all to become gaseous state in a flash, and the piston above row of pushing away is controlled by the first electric pushrod
Go out gas phase natural gas；
(4) sampler is moved to cooling station, sampling box is cooled down, when temperature reaches -162 DEG C, cycle
Carry out next detection operation.
Claims (7)
1. a kind of novel LNG online detection instruments, it is characterized in that, including transmission belt, transmission belt be equipped at least one take
Sampling device, and transmission belt is equipped with four sampling station, heating station, sample presentation station and cooling station stations, sampler
As the operation of transmission belt moves back and forth between four stations；
Sampler includes sampling box, piston, upper support seat and lower support base；The top of sampling box is equipped with the first opening, its bottom
Portion is equipped with the second opening, and the first opening is equipped with corking component, and upper support seat is fixed on the bottom of sampling box, is set in upper support seat
There are open-topped first regulating tank, the second opening to protrude outward shape below the top of the first regulating tank, upper support seat
At a circle rest pad, piston is movably disposed in sampling box, and the stopper rod of piston passes through the second opening setting to be adjusted first
In slot, the bottom of the stopper rod of piston is equipped with push plate, and the first electric pushrod for being fixed on the first adjusting trench bottom is connected with push plate,
First electric pushrod control piston moves in sampling box；
Lower support base is fixed on transmission belt, and lower support base is equipped with open-topped second regulating tank, the second regulating tank
Depth is more than the height of rest pad, and rest pad is moving up and down to be arranged in the second regulating tank of lower support base, and second is adjusted
What is extended internally at the top of slot is equipped with a circle baffle, and baffle is equipped with several first grafting items, and the first grafting item is movably set
It sets in the first limit chamber of rest pad, the bottom of rest pad is equipped with several second grafting items, and the second grafting item is movably set
It sets in the second limit chamber of lower support base, the bottom of the second regulating tank is equipped with third regulating tank, and the is equipped in third regulating tank
Two electric pushrods, the second electric pushrod are fixedly connected with upper support seat, and the second electric pushrod controls upper support seat and is fixed on
Sampling box on support base moves up and down；
It samples station and is equipped with liquid phase probe tube, liquid phase probe tube may pass through corking component and inject liquid phase LNG into sampling box；
Heating station is equipped with heating device, and heating device is for heating the liquid phase LNG in sampling box；
Sample presentation station is equipped with gas phase efferent duct, and gas phase efferent duct may pass through corking component by the gas phase LNG outputs in sampling box
It is analyzed；
Cooling station is equipped with cooling device, and cooling device is used to carry out cooling treatment to sampling box.
2. a kind of novel LNG online detection instruments as described in claim 1, it is characterized in that, corking component includes outer tube, outside
The inner wall of casing is up-small and down-big truncated cone-shaped structure, and the inner wall of outer tube is equipped with a circle second baffle and a circle third gear
Plate, second baffle are located at the top of third baffle, and a corking, the section shape of corking are fixed by several springs in third baffle
Shape is convex shape structure, and corking is plug-type to be arranged between second baffle, and corking is used for hermetically sealed case pipe, and outer tube is fixed on
First overthe openings.
3. a kind of novel LNG online detection instruments as claimed in claim 2, it is characterized in that, it raises up at the top of corking
Equipped with a circle locating ring.
4. a kind of novel LNG online detection instruments as described in claim 1, it is characterized in that, liquid phase probe tube and gas phase output
Guan Jun includes tube body, and the bottom of tube body is enclosuring structure, if the outer wall of bottom, which is equipped with, does sample opening, liquid phase LNG is logical
It crosses out in sample opening injection sampling box, gas phase LNG is entered by going out sample opening in gas phase efferent duct.
5. a kind of novel LNG online detection instruments as described in claim 1, it is characterized in that, the second open bottom and push plate
Bellows is equipped between top, bellows-sheathed is located at the outside of piston stopper rod.
6. a kind of novel LNG online detection instruments as described in claim 1, it is characterized in that, liquid phase probe tube and LNG storage tank phase
Connection, gas phase efferent duct are connected with gaseous-mass spectrography instrument.
7. a kind of novel LNG online detection instruments as described in claim 1, it is characterized in that, heating device and cooling device are equal
Including device case, the upstream end of device case and leave end on be equipped with electrodynamic induction sliding door, the device case of heating device
It is interior to be equipped with heater, it is equipped with refrigerator in the device case of cooling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356026.3U CN207851001U (en) | 2018-03-15 | 2018-03-15 | A kind of novel LNG online detection instruments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356026.3U CN207851001U (en) | 2018-03-15 | 2018-03-15 | A kind of novel LNG online detection instruments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207851001U true CN207851001U (en) | 2018-09-11 |
Family
ID=63424609
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820356026.3U Expired - Fee Related CN207851001U (en) | 2018-03-15 | 2018-03-15 | A kind of novel LNG online detection instruments |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975069A (en) * | 2019-04-23 | 2019-07-05 | 浙江海洋大学 | A kind of LNG on-line period detection system |
-
2018
- 2018-03-15 CN CN201820356026.3U patent/CN207851001U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975069A (en) * | 2019-04-23 | 2019-07-05 | 浙江海洋大学 | A kind of LNG on-line period detection system |
| CN109975069B (en) * | 2019-04-23 | 2024-04-05 | 浙江海洋大学 | LNG on-line sampling detection system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180911 Termination date: 20190315 |
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| CF01 | Termination of patent right due to non-payment of annual fee |