CN110360444A - A kind of skid-mounted LNG entrucking and liquid guide system - Google Patents
A kind of skid-mounted LNG entrucking and liquid guide system Download PDFInfo
- Publication number
- CN110360444A CN110360444A CN201910678845.9A CN201910678845A CN110360444A CN 110360444 A CN110360444 A CN 110360444A CN 201910678845 A CN201910678845 A CN 201910678845A CN 110360444 A CN110360444 A CN 110360444A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- entrucking
- lng
- liquid guiding
- guiding pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003345 natural gas Substances 0.000 abstract description 4
- 239000002737 fuel gas Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000012530 fluid Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- 239000011555 saturated liquid Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a kind of skid-mounted LNG entrucking and liquid guide systems, it is prized including entrucking arm, and connect the Liquid guiding pump sled of entrucking arm sled, the pipeline one for being connected to LNG tank car is provided in the entrucking arm sled, it is connected to the pipeline two of LNG tank car BOG, for the pipeline BOG pipeline three recycled and for the pipeline four of overpressure relief in system, the pipeline one, pipeline two, pipeline three and pipeline four are formed for utilizing the pipeline branch line that overbottom pressure realization LNG is filled in system, Liquid guiding pump is provided in the Liquid guiding pump sled, the pipeline five of connection BOG recuperator is provided on the Liquid guiding pump.It is integrated that the present invention by the layout facility of pipeline realize entrucking can with drain, filling for LNG is realized using the overbottom pressure of natural gas liquefaction device simultaneously, LNG drain speed is promoted by the compulsory circulation of Liquid guiding pump, LNG can be reduced to fill and drain process BOG yield, the tank car waiting time is shortened, process is reliable and secure.
Description
Technical field
The present invention relates to LNG to fill technical field, specially a kind of skid-mounted LNG entrucking and liquid guide system.
Background technique
LNG is a kind of low temperature, colourless, tasteless, nontoxic and non-corrosive medium, his volume is about that same amount gaseous state is natural
45%, LNG of a quarter of gas, only androgynous ponding is a kind of safe, high-quality, efficient, clean medium, be may be implemented
Transporting safely for long range, enhances city gas peak shaving and emergency capability.
Due to its low-temperature characteristics, usual LNG is during handling, drain, it may appear that a large amount of flashed vapour (BOG) causes
More fluid loss.Therefore, a kind of simple, reliable method is found, the liquid during the handling of LNG, drain is reduced and disappears
Consumption, reduces the yield of BOG, is hot spot concerned by people always, and there are following defects in existing technology；
1: the prior art unavoidably generates fluid loss with there are a kind of by the way of liquid gasification pressurization；
2: the prior art mainly adopts device autonomous working, entrucking is generally operated separately with drain；
3: the prior art uses cryogenic liquid pump and gasifier combined method, and process is complicated, and does not consider LNG entrucking process；
4: there is the handler that LNG can be achieved in the prior art, but immersed pump is set in LNG storage tank, and process of unloading is only
The method that can be pressurized by LNG tank car itself realizes that controlling is poor, while LNG surge tank and pry regulator is arranged, scheme composition
It is more complex, it is more difficult to be implemented as sledge.
Summary of the invention
The purpose of the present invention is to provide a kind of skid-mounted LNG entrucking and liquid guide systems, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of skid-mounted LNG entrucking and liquid guide system, packet
It includes entrucking arm sled and connects the Liquid guiding pump sled of entrucking arm sled；
Be provided in entrucking arm sled and be connected to the pipeline one of LNG tank car, the pipeline two that is connected to LNG tank car BOG, for managing
The pipeline three that road BOG is recycled and the pipeline four for overpressure relief in system, the pipeline one, pipeline two, three and of pipeline
Pipeline four is formed for utilizing the pipeline branch line that overbottom pressure realization LNG is filled in system；
It is provided with Liquid guiding pump in the Liquid guiding pump sled, the pipeline five of connection BOG recuperator is provided on the Liquid guiding pump.
It is provided with safety valve on the pipeline one and pipeline two, which is respectively connected with EAG recuperator.
Valve, safety valve, pressure gauge and entrucking arm are provided on the pipeline one.
The pipeline one is provided with two in entrucking arm sled altogether, and is connected to by pipeline branch line, and be connected on pipeline four.
Valve, safety valve, pressure gauge and entrucking arm are provided on the pipeline two.
The pipeline one, pipeline two are connected to pipeline five and are formed with the pipeline branch for generating BOG for collecting entrucking process
Line is to pipeline three.
The Liquid guiding pump for tank car to tank car drain is set in the Liquid guiding pump sled, which includes Liquid guiding pump one and lead
Liquid pump two.
The pipeline branch line extremely pipe that BOG is generated for collecting drain process is respectively connected on the Liquid guiding pump one and Liquid guiding pump two
Road three.
Liquid guiding pump, valve, safety valve, pressure gauge and temperature sensor are provided on pipeline in the Liquid guiding pump sled.
Safety valve in the Liquid guiding pump sled is connected to EAG recuperator.
As shown from the above technical solution, the present invention makes entrucking and drain that can realize one by the layout facility of pipeline
Change, while the overbottom pressure of natural gas liquefaction device realizes filling for LNG, LNG drain speed promoted by the compulsory circulation of Liquid guiding pump,
LNG can be reduced to fill and drain process BOG yield, shorten the tank car waiting time, process is reliable and secure.
Detailed description of the invention
Fig. 1 is present system schematic diagram.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
A kind of skid-mounted LNG entrucking as shown in Figure 1 and liquid guide system, including entrucking arm sled 16 and connect entrucking arm sled
16 Liquid guiding pump sled 17, is below described in further detail entrucking arm sled 16；
The pipeline for being connected to the pipeline 1 of LNG tank car 9 and being connected to tank car gas phase hose 8 is provided in entrucking arm sled 16
22, it is formed on the pipeline 1 and pipeline 22 for that can realize pipeline branch line that LNG be filled after throttling by loine pressure,
Current embodiment require that doing emphasis detailed description for the pipeline branch line；
Firstly, the present embodiment is provided with 2 identical pipelines 1 in entrucking arm sled 16 altogether, pipeline is extending to LNG tank car
It is disposed with valve 05, pressure gauge, valve 06, safety valve 07, valve 08 and entrucking arm 10 on 9 direction, is managed at two
A pipeline branch line is provided between road 1, which is connected between safety valve 07 and valve 08, and connects at bout end
Road 44 is taken over, while being provided with by-passing valve 41 on the pipeline branch line；The present embodiment is prized 16 internal strengths in entrucking arm and is provided with simultaneously
2 identical pipelines 22, pipeline be disposed on the direction for extending to tank car gas phase hose 8 safety valve, pressure gauge,
Valve, safety valve and entrucking arm 10, while pipeline branch line is communicated between pipeline 1 and pipeline 22, on the pipeline branch line
It is again provided with valve, the BOG generated during LNG entrucking can enter combustion by following path in above-mentioned pipeline arrangement
Expect gas system 33；
1: the BOG generated during entrucking along pipeline one 1 → entrucking arm 10 → pipeline, 33 → valve, 01 → BOG recuperator 31 →
02 → fuel gas system of valve, 33 path, by entering fuel gas after 10 pipeline of entrucking arm, 31 re-heat to room temperature of BOG recuperator
System 33；
2: the BOG that entrucking process generates is along tank car gas phase hose 8 → entrucking arm 10 → pipeline, 33 → valve, 01 → BOG recuperator
31 → valve, 02 → fuel gas system, 33 path, it is laggard to room temperature by another 10 pipeline of entrucking arm, 31 re-heat of BOG recuperator
Enter to fuel gas system 33；
3: the BOG that drain process generates divides two-way: a 33 → valve of curb tank car gas phase hose 8 → valve, 12 → pipeline 01 →
02 → fuel gas system of BOG 31 → valve of recuperator, 33 path, is arrived by 8 pipeline of tank car gas phase hose, 31 re-heat of BOG recuperator
Fuel gas system 33 is entered after room temperature；Another way is along pipeline 55 → valve, 15 → pipeline, 33 → valve, 01 → BOG recuperator
31 → valve, 02 → fuel gas system, 33 path, the pipeline 55 are immersed pump gas phase hose line, pass through pipeline 55, BOG
Fuel gas system 33 is entered after 31 re-heat to room temperature of recuperator；
4: if system pressure occurs more than limit value, the pressure gauge being arranged on pipeline 1 and pipeline 22 can detect real-time number
According to, and making safety valve jumping up, the pipeline branch line being connected on safety valve at this time will be connected to EAG recuperator 32, in EAG re-heat
The both ends of device 32 are respectively arranged with valve 03 and valve 04, and enter diffusion system 34 eventually by EAG recuperator 32；
It should be noted simultaneously that this programme setting starting security pipeline, is communicated with nitrogen header pipe 7, the nitrogen on pipeline 1
Gas general pipeline's 7 always holds 06 two sides of valve for being formed with two pipeline branch lines and being respectively turned on pipeline one 1 any one, and
Valve 09 and valve 11 are respectively arranged on two pipeline branch lines, when device starts and unusual condition occurs, operator can
By making device be in safe shape by the way of nitrogen displacement about natural gas system valve, unlatching nitrogen system valve
State.
During entrucking, after a tank car is filled, the valve 06 on a wherein pipeline 1 is opened, and close another
Valve 06 on one pipeline 1, is filled, and as above alternately fills use, the present embodiment preferably two pipelines 1 are not right
Particular number is defined, can according to actual needs to entrucking arm sled 16 in pipeline 1 and pipeline 22 increase, need
What is illustrated is that the quantity of pipeline 1 in this programme and pipeline 22 is mutually matched setting.
Secondly, being carried out for Liquid guiding pump sled 17 as described below；
There are two Liquid guiding pumps, respectively Liquid guiding pump 1 and Liquid guiding pump 2 19 for setting in Liquid guiding pump sled 17, in Liquid guiding pump 1
With the pipeline branch line for being provided with connecting pipeline 55 on Liquid guiding pump 2 19, valve 14 and valve are respectively arranged on the pipeline branch line
Door 13, while it being provided with pipeline branch line on the arrival end pipeline of on-tube Liquid guiding pump 2 19, which is connected to Liquid guiding pump
2 18, and the outlet end of the Liquid guiding pump 2 18 is connected to pipeline 55, and is provided with valve 20 on the pipeline branch line, needs
Bright is extremely provided with valve 15 on pipeline 55, carries out drain through the following steps during drain；
The LNG tank car 9 of more liquid and the entrucking arm 10 on pipeline 22 are connected, the valve 6 on pipeline 22, which is in, closes
State opens by-passing valve 41, into Liquid guiding pump sled 17, after the temperature of Liquid guiding pump 1 and Liquid guiding pump 2 18 reaches, to pipeline
Slowly boosting, the LNG of certain pressure enter in LNG tank car 9 to be filled, generated during drain BOG in the following manner into
Row is collected；
1: pipeline 55 being entered by valve 13 and valve 14, and pipeline 33 is entered by valve 15, into setting in pipe
BOG recuperator 31 on road 33 is respectively arranged with valve 01 and valve 02 at the both ends of BOG recuperator 31, when BOG recuperator
Fuel gas system 33 is entered after 31 re-heats to room temperature；
2: pipeline 55 being entered by valve 20, and pipeline 33 is entered by valve 15, into being arranged on pipeline 33
BOG recuperator 31 is respectively arranged with valve 01 and valve 02 at the both ends of BOG recuperator 31, when 31 re-heat of BOG recuperator is to often
Fuel gas system 33 is entered after temperature；
3: entrucking arm is entered by LNG tank car gas phase hose 8,12 pipeline of valve and prizes BOG recovery line, and is connected to pipeline 33,
The BOG recuperator 31 being arranged on pipeline 33 is entered back into, is respectively arranged with valve 01 and valve at the both ends of BOG recuperator 31
02, fuel gas system 33 is entered after 31 re-heat to room temperature of BOG recuperator.
Above scheme prizes block, entrucking arm sled 16 and Liquid guiding pump sled 17 by two sons, realizes entrucking and drain function respectively
Can, equipment usage amount is few, and it is easy to operate, and do not used by way of adding gasifier, device LNG section is adequately utilized
Pressure after stream realizes filling for LNG, and BOG yield is small, and the consumption of entrucking process liquids is small.
Meanwhile stressing that usual natural gas liquefaction device LNG operating pressure need to be from height for above scheme needs
Pressure (4 ~ 5MPa), which is throttled to cryogenic liquid storage facilities design pressure or less and just can enter fluid storage equipment, to be stored, and is more than
The design pressure of equipment does not allow access into the fluid storage equipment then；Cryogenic liquid storage facilities routine operating pressure usually exists
0.2MPa or less；LNG enters the condition of fluid storage equipment are as follows: the difference of pressure and fluid storage equipment pressure after LNG throttling
> pipe-line system resistance；Pressure is higher than certain value after throttling, and LNG can be flow in storage facilities certainly.
Liquid guiding pump is arranged in this programme: on the one hand, by the raising of pressure after pump, LNG stream is led to ability and is improved, and reduces tank car
The time of waiting；On the other hand, due to pressure rise, the LNG after Liquid guiding pump is in supercooled liquid.The LNG of supercooled state is needed first
After absorbing external environment heat to saturated liquid, further gasification generates BOG after heat absorption, therefore can to dissolve leaking heat big for this programme,
Practical BOG yield is small.According to from pressurization gasifier, a certain amount of LNG need to be consumed, the operating pressure of tank car is made after gasification
It is improved, the LNG after this mode is boosted is saturated liquid, is also easy to produce BOG after absorbing external heat.
Immersed pump can be used in this programme Liquid guiding pump, and pump is whole to be immersed in LNG liquid, is in low-temperature condition always, avoids
The pre-cooling temperature-fall period of pump, when needing drain, pump can be with quick start, after tank car is full of, termination of pumping；In the process, if hair
Raw superpressure or other abnormal conditions are, it can be achieved that chain pump trip.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (10)
1. a kind of skid-mounted LNG entrucking and liquid guide system, it is characterised in that: prize and connect entrucking arm sled including entrucking arm
Liquid guiding pump sled；
Be provided in entrucking arm sled and be connected to the pipeline one of LNG tank car, the pipeline two that is connected to LNG tank car BOG, for managing
The pipeline three that road BOG is recycled and the pipeline four for overpressure relief in system, the pipeline one, pipeline two, three and of pipeline
Pipeline four is formed for utilizing the pipeline branch line that overbottom pressure realization LNG is filled in system；
It is provided with Liquid guiding pump in the Liquid guiding pump sled, the pipeline five of connection BOG recuperator is provided on the Liquid guiding pump.
2. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: one He of pipeline
It is provided with safety valve on pipeline two, which is respectively connected with EAG recuperator.
3. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: on the pipeline one
It is provided with valve, safety valve, pressure gauge and entrucking arm.
4. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: the pipeline one exists
It is provided with two altogether in entrucking arm sled, and is connected to by pipeline branch line, and be connected on pipeline four.
5. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: on the pipeline two
It is provided with valve, safety valve, pressure gauge and entrucking arm.
6. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: the pipeline one, pipe
Road two, which is connected to and is formed with pipeline five, generates the pipeline branch line of BOG to pipeline three for collecting entrucking process.
7. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: the Liquid guiding pump sled
Interior to be provided with Liquid guiding pump for being connected on the pipeline of LNG tank car, which includes Liquid guiding pump one and Liquid guiding pump two.
8. a kind of skid-mounted LNG entrucking according to claim 7 and liquid guide system, it is characterised in that: the Liquid guiding pump one
The pipeline branch line of BOG is generated to pipeline three for collecting drain process with being respectively connected on Liquid guiding pump two.
9. a kind of skid-mounted LNG entrucking according to claim 1 and liquid guide system, it is characterised in that: the Liquid guiding pump sled
Liquid guiding pump, valve, safety valve, pressure gauge and temperature sensor are provided on interior pipeline.
10. a kind of skid-mounted LNG entrucking according to claim 9 and liquid guide system, it is characterised in that: the Liquid guiding pump sled
Interior safety valve is connected to EAG recuperator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678845.9A CN110360444A (en) | 2019-07-25 | 2019-07-25 | A kind of skid-mounted LNG entrucking and liquid guide system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910678845.9A CN110360444A (en) | 2019-07-25 | 2019-07-25 | A kind of skid-mounted LNG entrucking and liquid guide system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110360444A true CN110360444A (en) | 2019-10-22 |
Family
ID=68222443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910678845.9A Pending CN110360444A (en) | 2019-07-25 | 2019-07-25 | A kind of skid-mounted LNG entrucking and liquid guide system |
Country Status (1)
| Country | Link |
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| CN (1) | CN110360444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237635A (en) * | 2020-03-09 | 2020-06-05 | 江苏长隆石化装备有限公司 | Low-temperature tank car loading and unloading pump skid device |
| CN114370606A (en) * | 2021-12-03 | 2022-04-19 | 新地能源工程技术有限公司 | Multifunctional LNG loading and unloading device and loading and unloading process |
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| KR20110097604A (en) * | 2010-02-24 | 2011-08-31 | 삼성중공업 주식회사 | Floating liquefied natural gas charging station |
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| KR20110097604A (en) * | 2010-02-24 | 2011-08-31 | 삼성중공업 주식회사 | Floating liquefied natural gas charging station |
| CN204176323U (en) * | 2014-09-30 | 2015-02-25 | 无锡特汇能源装备有限公司 | A kind of LNG low temperature list pump sled |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111237635A (en) * | 2020-03-09 | 2020-06-05 | 江苏长隆石化装备有限公司 | Low-temperature tank car loading and unloading pump skid device |
| CN114370606A (en) * | 2021-12-03 | 2022-04-19 | 新地能源工程技术有限公司 | Multifunctional LNG loading and unloading device and loading and unloading process |
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