CN207689207U - A kind of LNG handling intermittent sampling analytical equipment - Google Patents
A kind of LNG handling intermittent sampling analytical equipment Download PDFInfo
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- CN207689207U CN207689207U CN201721680538.7U CN201721680538U CN207689207U CN 207689207 U CN207689207 U CN 207689207U CN 201721680538 U CN201721680538 U CN 201721680538U CN 207689207 U CN207689207 U CN 207689207U
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Abstract
The utility model is related to a kind of LNG handling intermittent sampling analytical equipments, it is characterized in that, the intermittent sampling analytical equipment includes LNG sampling probes, gasification installation, sampling main pipe rail, BOG return mechanisms, on-line analysis device, manual sampling systems, sample collection fill system and control system；LNG sampling probes connect gasification installation import with temperature detecting element by the way that shut-off valve is isolated, gasification installation outlet connects BOG manifold by sampling main pipe rail with BOG return mechanisms, gasification installation outlet is also separately connected on-line analysis device, manual sampling systems and sample collection fill system import by sampling main pipe rail, sample collection fill system outlet connection BOG manifold, sample collection fill system are also respectively connected with instrument air and prefilled carrier gas device；Isolation shut-off valve, temperature detecting element, gasification installation, sampling main pipe rail and sample collection fill system are also electrically connected control system, and the utility model can be widely applied in liquefied natural gas sampling and analysing technical field.
Description
Technical field
The utility model is to be used for the harbour discharging of LNG receiving stations, the entrucking of LNG tank cars and LNG filling stations about a kind of
LNG handling intermittent sampling analytical equipments, belong to liquefied natural gas sampling and analysing technical field.
Background technology
LNG (liquefied natural gas, i.e. liquefied natural gas) be used as safe and efficient clean energy resource, at
Increase most swift and violent one of energy industry for the whole world, China also increasingly payes attention to the development of LNG industry, China gone into operation with
And the provinces such as LNG receiving stations covering Guangdong, Fujian, Zhejiang, Shanghai, Jiangsu, Shandong, Tianjin, Liaoning and Hebei planned,
Mini gas liquefaction plant and LNG filling stations it is more, LNG handling are the important links all referred in above-mentioned yard,
It is broadly divided into shipping, tank car transport and filling station etc., shipping LNG is carried on trade clearing with energy unit, and LNG components are LNG close
The key parameter of degree and unit calorific value calculation, analysis result directly affects the particular number of LNG trade transactions metering and quality is sentenced
It is fixed.It is the liquid mixture of ultralow temperature due to LNG and easily gasifies, liquid is all easy under fine temperature and pressure variations influence
The Quick Fraction gasification for generating component, obtain it is true, can represent liquid mixture in pipeline than flowing LNG samples, deposit
In prodigious difficulty, therefore, LNG samples must keep supercooled state before gasification, must not have any component fractionation to gasify, gasification
Afterwards it is ensured that gas component mixing ratio with liquid component than completely the same.
The key link that LNG tank cars transport sampling analysis device is identical as shipping methods, currently, during the transport of LNG tank cars is
The sole support that Large LNG receiving station of the country of state, small liquid factory liquid are distributed, LNG imports are all using energy meter side
Formula, but it is defeated always using mass metrology outside tank car, it is had differences in receiving station's inlet and outlet management, therefore most receiving stations use
The outer defeated gas component of gasification carries out the calorific value calculation of liquid LNG, but defeated different from the LNG supplied materials of liquid distribution outside pipeline, example
Such as, the defeated BOG boil-off gas from LNG storage tank outside pipeline gas sometimes, and the distribution of LNG liquid comes from low pressure output pump, the two group
Divide and has differences；Part receiving station considers the differentiation of Downstream Market, and difference is carried out to the resource of defeated outside pipeline and liquid distribution
Change management and transmission ＆ distribution；Part receiving station, which faces, first builds tank car developing target market, after build pipeline improve production capacity current demand, need for
Sampling analysis device is separately configured in tank car.Therefore, tank car transport also faces the current demand of LNG sampling analysis devices.In addition,
LNG filling stations either consider the main trend of energy meter, still meet client to exotic fuels as downstream point-of-sale terminal
Demand, the also trend of oriented caloricity gaging development, therefore, demand of the LNG filling stations to LNG sampling analysis devices is compeled increasingly
It cuts.
Previous LNG sampling analysis devices have the following problems：1) decompressor is set before gasification or with gasification function
Decompression valve, in turn result in LNG samples and gasify in advance.2) heater power is insufficient or unadjustable, cannot meet difference
The heat demand of LNG gasification under operating mode is sampled, and gasification is unstable, causes the gasification of LNG samples uneven.3) only from taking
Sample is popped one's head in and two links of gasifier are designed, and lacks the Completeness Design of entire sampler.4) big with space,
The shortcomings of investment is big and sample volume is big.
Invention content
LNG samples can be inhibited to gasify in advance, ensure in view of the above-mentioned problems, the purpose of this utility model is to provide one kind
The uniform LNG handling intermittent sampling analytical equipment of LNG samples gasification.
To achieve the above object, the utility model takes following technical scheme：A kind of LNG handling intermittent sampling analysis dress
It sets, which is characterized in that the intermittent sampling analytical equipment includes LNG sampling probes, gasification installation, sampling main pipe rail, BOG returns
Device, on-line analysis device, manual sampling systems, sample collection fill system and control system, wherein the sample collection is filled out
Charging system includes three intermittent sampling pipelines, a first manual ball valve and a first check-valve, each intermittent sampling pipeline
Including the constant pressure piston type gas bomb of a sample collector, a second check-valve, one with floating piston arrangement, one first pressure
Force regulating valve and a solenoid valve, and each constant pressure piston type gas bomb is removably disposed in corresponding second non-return
Between valve and first pressure regulating valve；The LNG sampling probes connect the gas with temperature detecting element by the way that shut-off valve is isolated
Import is set in makeup, and the gasification installation outlet connects BOG manifold, the gas with BOG return mechanisms by the sampling main pipe rail
Makeup sets outlet and is separately connected the on-line analysis device and manual sampling systems, the gasification dress by the sampling main pipe rail
It sets outlet and passes through the import for sampling main pipe rail also successively through three sample collectors, the first manual ball valve and first
Check-valves connects the BOG manifold, and the outlet of each sample collector is lived through the corresponding second check-valve, constant pressure successively
Plug gas bomb connects prefilled carrier gas device with first pressure regulating valve；Each first pressure regulating valve connects instrument respectively
Air source, each sample collector connect the instrument air through the corresponding solenoid valve, are every by the instrument air
The one first pressure regulating valve and solenoid valve provide power；The isolation shut-off valve, gasification installation, takes temperature detecting element
Sample main pipe rail, first pressure regulating valve and solenoid valve are also electrically connected the control system.
Preferably, the gasification installation includes gasifier, gasifier inlet temperature detecting element, the inspection of gasifier internal temperature
Survey element, gasifier exit temperature detecting element and outlet pressure transmitter, wherein the gasifier is gasified using electrical heating type
Device；The gasifier inlet temperature detecting element of the import setting of the gasifier for detecting the preceding LNG sample temperatures of gasification,
Setting detects member for detecting the gasifier internal temperature of temperature change during LNG samples gasify in the gasifier
Part, the gasifier outlet by for detect gasify after gaseous sample temperature the gasifier exit temperature detecting element
The sampling main pipe rail is connected with for the outlet pressure transmitter of gas sample pressure after detecting gasification；The gasifier
Inlet temperature detecting element, gasifier internal temperature detecting element, gasifier exit temperature detecting element and outlet pressure pick-up
Device is also electrically connected the control system.
Preferably, it is gentle that safety valve, main pipe rail flowmeter, pressure control device are disposed on the sampling main pipe rail
Rush tank, wherein the pressure control device includes second pressure regulating valve, pressure transmitter and pressure controller, and described
Two pressure-regulating valves, pressure transmitter and pressure controller form primary Ioops；The gasification installation outlet passes through the safety valve
It is separately connected the BOG return mechanisms and pressure control device with main pipe rail flowmeter, it is total that the safety valve is also connected with the BOG
Pipe, the pressure control device are also connected with the surge tank import, and the surge tank outlet is separately connected the on-line analysis dress
It sets, the import of manual sampling systems and sample collector；The second pressure regulating valve and pressure transmitter are electrically connected institute
Pressure controller is stated, the main pipe rail flowmeter and pressure controller are also electrically connected the control system.
Preferably, the BOG return mechanisms include the second manual ball valve and third check-valves；The main pipe rail flowmeter is logical
It crosses second manual ball valve and connects the BOG manifold with third check-valves.
Preferably, the on-line analysis device includes first branch flowmeter, in-line analyzer and third manual ball valve；Institute
It states surge tank outlet and is separately connected the first branch flowmeter and in-line analyzer, the first branch flowmeter divides with online
The third manual ball valve is provided on pipeline between analyzer.
Preferably, the manual sampling systems include the second branch flowmeter, manual sampling steel cylinder and the 4th manual ball valve；
The surge tank outlet is separately connected the second branch flowmeter and manual sampling steel cylinder, the second branch flowmeter and hand
It is provided with the 4th manual ball valve on pipeline between dynamic sampling steel cylinder.
Preferably, it is kept the temperature using nano material outside the LNG sampling probes, and the LNG sampling probes and gas
The connecting line changed between device is less than 0.5m；Loading gas in the prefilled carrier gas device uses argon gas.
The utility model has the following advantages due to taking above technical scheme：1, the utility model is complete set
From the LNG intermittent sampling analytical equipments for being sampled to analysis, overcome previous device only from sampling and two aspect progress of gasification
It designs, be only applicable to the shortcomings that shipping LNG dischargings or tank car entrucking pipeline LNG component analyses, filled out due to being provided with sample collection
Gaseous sample can intermittently be pumped into constant pressure piston type gas bomb, can inhibit the gas in advance of LNG samples by charging system
Change, ensure that the gasification of LNG samples is uniform, continuously taking in sample steel cylinder is re-introduced by all gas sample collection to air accumulator
Sample is compared, and the utility model also has the characteristics that space is small, investment is small and sample volume is saved.2, the utility model is adopted
Directly LNG samples are heated with electric heater, electric heater used occupies little space, and water-bath or steam-type can be avoided to add
Hot device needs the shortcomings that extra process heating agent, easy to operate and efficient.3, the prefilled carrier gas device of the utility model uses argon
Gas has a subtle leakage as gas is loaded, to prevent constant pressure piston type gas bomb both sides, and argon gas do not interfere with chromatography as a result,
It can be widely applied in liquefied natural gas sampling and analysing technical field.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model LNG handling intermittent sampling analytical equipments, wherein "-" indicates
Sampling line,Indicate instrument air pipeline.
Specific implementation mode
Come to carry out detailed description to the utility model below in conjunction with attached drawing.It should be appreciated, however, that attached drawing is provided only
More fully understand the utility model, they should not be interpreted as limitations of the present invention.In the description of the utility model
In, it is to be understood that term " first ", " second " etc. are only used for the purpose of description, and should not be understood as instruction or dark
Show relative importance.
As shown in Figure 1, LNG handling intermittent sampling analytical equipment provided by the utility model include LNG sampling probes 1,
Shut-off valve 2 is isolated, temperature detecting element 3, gasification installation 4, sampling main pipe rail 5, BOG return mechanisms 6, BOG manifold 7, divides online
Analysis apparatus 8, manual sampling systems 9, sample collection fill system 10, prefilled carrier gas device 11, instrument air 12 and control system
System (not shown), wherein sample collection fill system 10 includes three intermittent sampling pipeline 10-1, a first manual ball valve
10-2 and first check-valve a 10-3, each intermittent sampling pipeline 10-1 includes a sample collector 10-4, one second non-return
Valve 10-5, a constant pressure piston type gas bomb 10-6, a first pressure regulating valve 10-7 and a solenoid valve 10-8, and each constant pressure is lived
Plug gas bomb 10-6 all has floating piston arrangement, can detach gaseous sample and prefilled carrier gas and keep needed for it is constant
Pressure, and be removably disposed between corresponding second check-valve 10-5 and first pressure regulating valve 10-7.
1 one end of LNG sampling probes main pipe line (including LNG dischargings manifold and tank car entrucking manifold is loaded and unloaded by flanged joint
Deng), the LNG samples that LNG sampling probes 1 are used to load and unload in main pipe line take out, and 1 other end of LNG sampling probes is closed by being isolated
Disconnected valve 2 and temperature detecting element 3 connect 4 import of gasification installation, and gasification installation 4 is used to LNG samples carrying out internal gasifier.Gasification
The outlet of device 4 connects 6 one end of BOG return mechanisms by sampling main pipe rail 5, and 6 other end of BOG return mechanisms connects BOG manifold 7,
BOG return mechanisms 6 are used to extra LNG samples being back to BOG manifold 7.The outlet of gasification installation 4 is divided by sampling main pipe rail 5
Not Lian Jie on-line analysis device 8 and manual sampling systems 9, sampling main pipe rail 5 be used for after gasification gaseous sample carry out pressure
It adjusts and mixing, on-line analysis device 8 is used to carry out on-line analysis to the gaseous sample after gasification, manual sampling systems 9 are used for
Manual sample acquisitions are carried out to the gaseous sample after gasification.The outlet of gasification installation 4 is by sampling main pipe rail 5 also successively through three samples
The import of collector 10-4, first manual ball valve 10-2 connect BOG manifold 7, each sample collector with first check-valve 10-3
The outlet of 10-4 passes sequentially through corresponding second check-valve 10-5, constant pressure piston type gas bomb 10-6 and first pressure regulating valve 10-7
Prefilled carrier gas device 11 is connected, sample collector 10-4 is used to the gaseous sample in surge tank 5-4 being pumped into constant pressure piston type
In gas bomb 10-6, first pressure regulating valve 10-7 is used to adjust the pressure of prefilled carrier gas device 11, prefilled carrier gas device
11 for providing loading gas for sample collection fill system 10 and then providing constant back pressure.
Each first pressure regulating valve 10-7 is separately connected instrument air 12, and each sample collector 10-4 imports are through corresponding
Solenoid valve 10-8 connections instrument air 12 is that each first pressure regulating valve 10-7 and solenoid valve 10-8 is carried by instrument air 12
For power.In addition, isolation shut-off valve 2, temperature detecting element 3, gasification installation 4, sampling main pipe rail 5, first pressure regulating valve 10-
7 and solenoid valve 10-8 is also electrically connected control system.
In a preferred embodiment, the entrance of constant pressure piston type gas bomb 10-6 is provided with import needle-valve 10-6-
1, exit is provided with vent needle valve 10-6-2, and pressure gauge 10-6-3 is additionally provided on constant pressure piston type gas bomb 10-6.
In a preferred embodiment, gasification installation 4 includes gasifier 4-1, gasifier inlet temperature detecting element 4-
2, gasifier internal temperature detecting element 4-3, gasifier exit temperature detecting element 4-4 and outlet pressure transmitter 4-5.Gasification
Gasifier inlet temperature detecting element 4-2 is arranged in device 4-1 imports, LNG sample temperatures before gasifying for detection, in gasifier 4-1
Gasifier internal temperature detecting element 4-3 is set, for detecting temperature change during LNG samples gasify, the outlets gasifier 4-1
Sampling main pipe rail 5, gasifier exit temperature are connected with outlet pressure transmitter 4-5 by gasifier exit temperature detecting element 4-4
Detecting element 4-4 is spent for gaseous sample temperature after detection gasification, and outlet pressure transmitter 4-5 is used to detect gas sample after gasification
The pressure of product.Gasifier inlet temperature detecting element 4-2, gasifier internal temperature detecting element 4-3, the inspection of gasifier exit temperature
It surveys element 4-4 and outlet pressure transmitter 4-5 and is also electrically connected control system.
In a preferred embodiment, it samples on main pipe rail 5 and is disposed with safety valve 5-1, main pipe rail flowmeter 5-
2, pressure control device 5-3 and surge tank 5-4.The outlet of gasification installation 4 passes through safety valve 5-1 and main pipe rail flowmeter 5-2 difference
Connection BOG return mechanisms 6 and pressure control device 5-3, safety valve 5-1 are also connected with BOG manifold 7, and pressure control device 5-3 also connects
Surge tank 5-4 imports are connect, the outlets surge tank 5-4 are separately connected on-line analysis device 8, manual sampling systems 9 and sample collector
The import of 10-4, superpressure is dangerous, and main pipe rail flowmeter 5-2 for surveying in real time for preventing the utility model from occurring by safety valve 5-1
The flow of sample main pipe rail 5 is measured, pressure control device 5-3 is excessive for preventing sampling 5 pressure oscillation of main pipe rail, ensures gas sample
Product enter surge tank 5-4 with uniform pressure, and surge tank 5-4 is used for the preliminary mixing of gaseous sample, main pipe rail flowmeter 5-2 and
Pressure control device 5-3 is also electrically connected control system.
In a preferred embodiment, pressure control device 5-3 includes second pressure regulating valve 5-3-1, pressure inverting
Device 5-3-2 and pressure controller 5-3-3, and second pressure regulating valve 5-3-1, pressure transmitter 5-3-2 and pressure controller 5-
3-3 forms primary Ioops.Second pressure regulating valve 5-3-1 and pressure transmitter 5-3-2 are electrically connected pressure controller 5-3-3,
Pressure controller 5-3-3 is also electrically connected connected control system, pressure transmitter 5-3-2 for detect enter surge tank 5-4 before gas sample
The pressure data detected is simultaneously sent to pressure controller 5-3-3 and control system by the pressure of product, and pressure controller 5-3-3 is used
In the aperture according to the control and regulation second pressure regulating valve 5-3-1 of control system.
In a preferred embodiment, BOG return mechanisms 6 include the second manual ball valve 6-1 and third check-valves 6-2.
Main pipe rail flowmeter 5-2 connects BOG manifold 7 by the second manual ball valve 6-1 with third check-valves 6-2.Second manual ball valve 6-1
The connection of BOG return mechanisms 6 and sampling main pipe rail 5 is cut off when being overhauled for third check-valves 6-2, third check-valves 6-2 is used for
Prevent the BOG gases in BOG manifold 7 from entering in sampling main pipe rail 5.
In a preferred embodiment, on-line analysis device 8 includes first branch flowmeter 8-1, in-line analyzer 8-
2 and third manual ball valve 8-3.The outlets surge tank 5-4 are separately connected first branch flowmeter 8-1 and in-line analyzer 8- by the road
2, first branch flowmeter 8-1 enter the flow of gaseous sample in on-line analysis device 8, first branch flow for measuring in real time
It is provided with third manual ball valve 8-3 on pipeline between meter 8-1 and in-line analyzer 8-2.
In a preferred embodiment, manual sampling systems 9 include the second branch flowmeter 9-1, manual sampling steel cylinder
9-2 and the 4th manual ball valve 9-3.The outlets surge tank 5-4 are separately connected the second branch flowmeter 9-1 and manually sampling steel by the road
Bottle 9-2, the second branch flowmeter 9-1 for measuring the flow for entering gaseous sample in manual sampling systems 9, the second branch in real time
It is provided with the 4th manual ball valve 9-3 on pipeline between flowmeter 9-1 and manual sampling steel cylinder 9-2.
In a preferred embodiment, PLC controller may be used in control system, and pressure control is provided in control system
Molding block, intermittent sampling parameter setting module, timing settings module, valve control module, fault detection module and interlock protection
Module.Pressure control module is used to control second pressure by pressure controller 5-3-3 according to the pressure data detected and adjust
The aperture of valve 5-3-1 adjusts the pressure of gaseous sample before entering sample collection fill system 10, realizes the voltage stabilizing tune of gaseous sample
Section, pressure control module is additionally operable to control the aperture of first pressure regulating valve 10-7 according to preset pressure value, and then adjusts permanent
Press the back-pressure of piston type gas bomb 10-6, wherein pressure value can be preset according to actual demand.Intermittent sampling
Parameter setting module is used to be preset total time between sample collection amount and sampling time interval etc. according to the LNG of tank car handling
Sampling parameters of having a rest simultaneously are sent to valve control module.Timing settings module analyzes all flows for setting entire intermittent sampling
Sequential, flow includes pipeline purging, pipeline emptying, automatic sampling, on-line analysis and sampling etc. manually, and is sent to valve control
Module.Valve control module is used for the unlatching of the corresponding solenoid valve 10-8 of intermittent sampling parameter and flow timing control according to setting
Or it closes.Fault detection module is used for pressure, temperature and the flow of LNG samples when presetting normal gasification, when passing through temperature
Detecting element 3 and the temperature of gasifier outlet temperature detecting element 4-4 detection, the pressure of outlet pressure transmitter 4-5 detections or
When the Traffic Anomaly of main pipe rail flowmeter 5-2 detections, abnormal signal is sent to interlock protection module.Interlock protection module is used for
When receiving abnormal signal, control isolation shut-off valve 2 is closed.
In a preferred embodiment, 1 outside of LNG sampling probes is kept the temperature using nano material, and LNG samplings are visited
Connecting line between first 1 and gasifier 4-1 is less than 0.5m, it is ensured that meets degree of supercooling requirement, can effectively inhibit LNG samples to carry
It is preceding to be fractionated.
In a preferred embodiment, electrical heating type gasifier 4-1 may be used in gasifier 4-1, can be according to difference
The LNG samples of component and flow adjust the power of gasifier 4-1, ensure that LNG samples being capable of instantaneous complete gas in gasifier 4-1
Change.
In a preferred embodiment, the non-pneumatics sample such as argon gas may be used in the loading gas in prefilled carrier gas device 11
Product component gas.
The user of the utility model LNG handling intermittent sampling analytical equipments is described in detail below by specific embodiment
Method：
1) three constant pressure piston type gas bomb 10-6 are separately positioned on three intermittent sampling pipeline 10-1, set constant pressure
The sample collection amount of piston type gas bomb 10-6, sampling time interval (sample size that samples every time and per double sampling between
Time interval), pressure value and entire intermittent sampling analysis flow, below using flow be pipeline purging, pipeline emptying, automatically
It is illustrated for sampling, on-line analysis and manual sampling.
2) tank car is loaded and unloaded the LNG samples in main pipe line and taken out by LNG sampling probes 1, and LNG samples fill in gasification installation 4
Divide gasification, if shut-off valve is isolated in emergency cut-off when detecting exit gas superpressure, temperature or the Traffic Anomaly of gasifier 4-1 at this time
2, it can close corresponding manual ball valve when if desired overhauling.
3) gaseous sample after gasifying, which enters after the voltage stabilizing of pressure control device 5-3 is adjusted in surge tank 5-4, to be mixed
It closes, closes all solenoid valve 10-8, pipeline purging is carried out to sampling line by gaseous sample and pipeline is vented.
4) it opens prefilled carrier gas device 11 and provides back pressure for three constant pressure piston type gas bomb 10-6, adjust first pressure tune
Save the back-pressure of the aperture regulation constant pressure piston type gas bomb 10-6 of valve 10-7 so that constant pressure piston type gas bomb 10-6 into
The pressure of gaseous sample reaches preset pressure value at mouthful.
5) all solenoid valve 10-8 are opened, instrument air 12 provides power for all samples collector 10-4 and starts to work,
Gaseous sample enters sample collection fill system 10 and is pumped into corresponding constant pressure piston type gas bomb 10-6 by sample collector 10-4
Middle carry out automatic sampling.
6) third manual ball valve 8-3 or the 4th manual ball valve 9-3 is opened as needed, passes through in-line analyzer 8-2 or hand
Dynamic sampling steel cylinder 9-2 carries out on-line analysis or manually sampling to gaseous sample.
The various embodiments described above are merely to illustrate the utility model, wherein the structure of each component, connection type and manufacture craft
Etc. may be changed, every equivalents carried out on the basis of technical solutions of the utility model and improvement,
It should not exclude except the scope of protection of the utility model.
Claims (7)
1. a kind of LNG handling intermittent sampling analytical equipment, which is characterized in that the intermittent sampling analytical equipment includes LNG samplings
Probe, gasification installation, sampling main pipe rail, BOG return mechanisms, on-line analysis device, manual sampling systems, sample collection filling system
System and control system, wherein the sample collection fill system includes three intermittent sampling pipelines, a first manual ball valve and one
First check-valve, each intermittent sampling pipeline include a sample collector, a second check-valve, one with floating piston
Constant pressure piston type gas bomb, a first pressure regulating valve and a solenoid valve for structure, and each constant pressure piston type gas bomb
It is removably disposed in accordingly between the second check-valve and first pressure regulating valve；
The LNG sampling probes connect the gasification installation import, the gasification with temperature detecting element by the way that shut-off valve is isolated
Device outlet connects BOG manifold with BOG return mechanisms by the sampling main pipe rail, and the gasification installation outlet is taken by described
Sample main pipe rail is separately connected the on-line analysis device and manual sampling systems, and the gasification installation outlet is total by the sampling
Import of the pipeline also successively through three sample collectors, that the first manual ball valve connects the BOG with first check-valve is total
Pipe, the outlet of each sample collector is successively through the corresponding second check-valve, constant pressure piston type gas bomb and the first pressure
Force regulating valve connects prefilled carrier gas device；
Each first pressure regulating valve is separately connected instrument air, and each sample collector is through the corresponding solenoid valve
The instrument air is connected, power is provided for each first pressure regulating valve and solenoid valve by the instrument air；
The isolation shut-off valve, temperature detecting element, gasification installation, sampling main pipe rail, first pressure regulating valve and solenoid valve are also
It is electrically connected the control system.
2. a kind of LNG handling intermittent sampling analytical equipment as described in claim 1, which is characterized in that the gasification installation
Including gasifier, gasifier inlet temperature detecting element, gasifier internal temperature detecting element, gasifier exit temperature detection member
Part and outlet pressure transmitter, wherein the gasifier uses electrical heating type gasifier；
Gasifier inlet temperature detection member of the import setting of the gasifier for detecting the preceding LNG sample temperatures of gasification
Part, gasifier internal temperature detection of the interior setting of the gasifier for detecting temperature change during LNG samples gasify
Element, the outlet of the gasifier are first by the gasifier exit temperature detection for detect gaseous sample temperature after gasification
Part connects the sampling main pipe rail with for the outlet pressure transmitter of gas sample pressure after detecting gasification；
The gasifier inlet temperature detecting element, gasifier internal temperature detecting element, gasifier exit temperature detecting element
It is also electrically connected the control system with outlet pressure transmitter.
3. a kind of LNG handling intermittent sampling analytical equipment as claimed in claim 2, which is characterized in that the sampling manifold
Road is disposed with safety valve, main pipe rail flowmeter, pressure control device and surge tank, wherein the pressure control device
Including second pressure regulating valve, pressure transmitter and pressure controller, and the second pressure regulating valve, pressure transmitter and pressure
Force controller forms primary Ioops；
The gasification installation outlet is separately connected the BOG return mechanisms and pressure by the safety valve and main pipe rail flowmeter
Control device, the safety valve are also connected with the BOG manifold, and the pressure control device is also connected with the surge tank import, institute
State the import that surge tank outlet is separately connected the on-line analysis device, manual sampling systems and sample collector；
The second pressure regulating valve and pressure transmitter are electrically connected the pressure controller, the main pipe rail flowmeter and
Pressure controller is also electrically connected the control system.
4. a kind of LNG handling intermittent sampling analytical equipment as claimed in claim 3, which is characterized in that the BOG returns to dress
It sets including the second manual ball valve and third check-valves；The main pipe rail flowmeter passes through second manual ball valve and third non-return
Valve connects the BOG manifold.
5. a kind of LNG handling intermittent sampling analytical equipment as claimed in claim 4, which is characterized in that the on-line analysis
Device includes first branch flowmeter, in-line analyzer and third manual ball valve；
Surge tank outlet is separately connected the first branch flowmeter and in-line analyzer, the first branch flowmeter and
The third manual ball valve is provided on pipeline between in-line analyzer.
6. a kind of LNG handling intermittent sampling analytical equipment as claimed in claim 5, which is characterized in that the manual sampling
System includes the second branch flowmeter, manual sampling steel cylinder and the 4th manual ball valve；
The surge tank outlet is separately connected the second branch flowmeter and manual sampling steel cylinder, the second branch flowmeter
The 4th manual ball valve is provided on pipeline between manual sampling steel cylinder.
7. such as a kind of LNG handling intermittent sampling analytical equipment of claim 1 to 6 any one of them, which is characterized in that described
It is kept the temperature using nano material outside LNG sampling probes, and the connecting line between the LNG sampling probes and gasifier is small
In 0.5m；Loading gas in the prefilled carrier gas device uses argon gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721680538.7U CN207689207U (en) | 2017-12-06 | 2017-12-06 | A kind of LNG handling intermittent sampling analytical equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680538.7U CN207689207U (en) | 2017-12-06 | 2017-12-06 | A kind of LNG handling intermittent sampling analytical equipment |
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| CN207689207U true CN207689207U (en) | 2018-08-03 |
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| CN201721680538.7U Withdrawn - After Issue CN207689207U (en) | 2017-12-06 | 2017-12-06 | A kind of LNG handling intermittent sampling analytical equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831049A (en) * | 2017-12-06 | 2018-03-23 | 中海石油气电集团有限责任公司 | Intermittent sampling analytical equipment and its application method are used in a kind of LNG handling |
| 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 |
| NL2033492B1 (en) * | 2022-04-13 | 2023-11-03 | Cnooc Gas & Power Group | Highly compact lng sampling and gasification apparatus with self-adaptive function |
-
2017
- 2017-12-06 CN CN201721680538.7U patent/CN207689207U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107831049A (en) * | 2017-12-06 | 2018-03-23 | 中海石油气电集团有限责任公司 | Intermittent sampling analytical equipment and its application method are used in a kind of LNG handling |
| CN107831049B (en) * | 2017-12-06 | 2022-11-08 | 北京探能科技有限责任公司 | Intermittent sampling analysis device for LNG loading and unloading and use method thereof |
| NL2033492B1 (en) * | 2022-04-13 | 2023-11-03 | Cnooc Gas & Power Group | Highly compact lng sampling and gasification apparatus with self-adaptive function |
| 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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