CN205118653U - LNG is from pressure boost device of unloading - Google Patents
LNG is from pressure boost device of unloading Download PDFInfo
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- CN205118653U CN205118653U CN201520809893.4U CN201520809893U CN205118653U CN 205118653 U CN205118653 U CN 205118653U CN 201520809893 U CN201520809893 U CN 201520809893U CN 205118653 U CN205118653 U CN 205118653U
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- lng
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Abstract
The utility model discloses a LNG is from pressure boost device of unloading, it includes LNG storage tank and LNG tank wagon, and characterized by is still including the vaporizer, and the liquid phase inlet of vaporizer links to each other with the liquid phase mouth of LNG tank wagon, and is equipped with the valve on the pipeline of connecting, the gaseous phase gas outlet of vaporizer links to each other with the gaseous phase mouth of LNG tank wagon, and is equipped with the valve on the pipeline of connecting, the liquid outlet of LNG tank wagon is continuous with the liquid phase mouth and the gaseous phase mouth of LNG storage tank respectively, and is equipped with the valve on the pipeline of connecting. The utility model discloses form a system of unloading and through this system, simplified traditional system of unloading, prevented the pollution of discharge by pump to the LNG storage tank, guaranteed LNG pureness degree. And accelerated the speed of unloading, saved the time of unloading, realized that the LNG storage tank steps down, has reduced LNG's vaporization loss.
Description
Technical field
The utility model relates to LNG production and fills field, is specifically related to a kind of LNG from supercharging unloading unit.
Background technique
The production and trade of global LNG is increasingly active in recent years, and LNG has become rare clean resource, in energy supply just with annual about 12% rapid growth, becoming the focus that world's oil and gas industry is new.For ensureing energy supply diversification and improving energy consumption structure, some energy-consuming big countries more and more pay attention to the introduction of LNG, and European and American developed countries all build LNG receiving station extensive.International major oil companies are also numerous and confused turns to LNG business by its new profit growth point, and LNG is by the popular energy commodity of next whole world contention after becoming oil.
China LNG utilizes very uneven, and the proportion in energy source in China is very little.From domestic development situation, due to resource-constrained, output is far smaller than demand, and insufficiency of supply-demand is increasing.Although also do not form scale, the feature of LNG determines that its development is very fast.
Along with the fast development of LNG, then LNG technology is also by constantly progress.The safe handling of LNG, reduces the loss in production and application process, improves the development trend that purity will be LNG industry technology.Unload in LNG storage tank for LNG tank car, traditional unloading way is, adopts the low-temperature transport tank car of factory of being liquefied by LNG to move fueling station to, then utilizes low temperature immersed pump that the liquid LNG in tank car is driven in LNG storage tank, then in packing.In the process, due to the inevitable leakage of pump, will pollute LNG.And also will increase natural gas leakage to environment risk with pump discharging, due to the inflammable and explosive property of rock gas, will potential safety hazard be increased.In addition, utilizing pump to carry out discharging, by producing a large amount of BOG, causing the waste of LNG.
Summary of the invention
Goal of the invention of the present utility model utilizes low temperature immersed pump that the liquid LNG in tank car is driven into some shortcomings of the traditional unloading way in LNG storage tank to overcome, and comprises in the process, due to the inevitable leakage of pump, pollute LNG; Also will increase natural gas leakage to environment risk with pump discharging, due to the inflammable and explosive property of rock gas, increase potential safety hazard; In addition, utilizing pump to carry out discharging, by producing a large amount of BOG, causing the waste of LNG.
Goal of the invention of the present utility model solves by following technical solution, a kind of LNG is from supercharging unloading unit, and it comprises LNG storage tank and LNG tank car, and it also includes vaporizer, the liquid phase liquid entering hole of vaporizer is connected with the liquid phase mouth of LNG tank car, and the pipeline connected is provided with valve; The gas phase air outlet of vaporizer is connected with the gas phase mouth of LNG tank car, and the pipeline connected is provided with valve; The liquid outlet of LNG tank car is connected with the liquid phase mouth of LNG storage tank and gas phase mouth respectively, and the pipeline connected is provided with valve.
Valve on the pipeline that the liquid phase liquid entering hole of vaporizer is connected with the liquid phase mouth of LNG tank car comprises the vaporizer liquid phase liquid entering hole valve of the one end near vaporizer, with the LNG tank car liquid phase mouth valve near LNG tank car one end.
Valve on the pipeline that the gas phase air outlet of vaporizer is connected with the gas phase mouth of LNG tank car comprises the vaporizer gas phase air outlet valve of the one end near vaporizer, with the LNG tank car gas phase mouth valve near LNG tank car one end.
Valve on the pipeline that the liquid outlet of LNG tank car is connected with liquid phase mouth and the gas phase mouth of LNG storage tank respectively comprises LNG storage tank gas phase mouth valve near LNG storage tank one end and LNG storage tank liquid phase mouth valve, with the LNG tank car liquid phase liquid outlet valve near LNG tank car one end.
The pipeline of the gas phase air outlet of vaporizer is also disposed with safety valve, thermometer (7) and pressure gauge.
The beneficial effects of the utility model are: by this from supercharging unloading unit, simplify traditional unloading system, prevent discharge by pump to the pollution of LNG storage tank, ensure that LNG degree of purity.And accelerate and unload vehicle speed, save the time of unloading, achieve the step-down of LNG storage tank, decrease the vaporization loss of LNG.Decrease potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Wherein: 1, LNG storage tank; 2, LNG storage tank liquid phase mouth valve; 3, LNG storage tank gas phase mouth valve; 4, vaporizer liquid phase liquid entering hole valve; 5, vaporizer; 6, safety valve; 7, thermometer; 8, pressure gauge; 9, vaporizer gas phase air outlet valve; 10, LNG tank car gas phase mouth valve; 11, LNG tank car liquid phase mouth valve; 12, LNG tank car liquid phase liquid outlet valve; 13, LNG tank car.
Embodiment
If Fig. 1 is the utility model structural representation, it comprises: also comprise LNG storage tank (1), LNG storage tank liquid phase mouth valve (2), LNG storage tank gas phase mouth valve (3), vaporizer liquid phase liquid entering hole valve (4), vaporizer (5), safety valve (6), thermometer (7), pressure gauge (8), vaporizer gas phase air outlet valve (9), LNG tank car gas phase mouth valve (10), LNG tank car liquid phase mouth valve (11), LNG tank car liquid phase liquid outlet valve (12), LNG tank car (13) in addition.
This LNG is illustrated from supercharging unloading unit below in conjunction with concrete schematic diagram.As shown in Figure 1, the two ends of vaporizer (5) use pipeline to be connected with LNG tank car liquid phase mouth with the LNG tank car gas phase mouth of LNG tank car (13) respectively.On these two pipelines, arrange vaporizer liquid phase liquid entering hole valve (4) and vaporizer gas phase air outlet valve (9) respectively, two valves, near vaporizer (5), are respectively used to the feed liquor of control vaporizer (5) and give vent to anger.Then, on these two pipelines, LNG tank car gas phase mouth valve (10) and LNG tank car liquid phase mouth valve (11) are set respectively near the side of LNG tank car (13), are respectively used to fluid and the air inlet of control LNG tank car (13).The liquid outlet of LNG tank car (13) is connected with gas phase mouth with the liquid phase mouth of LNG storage tank (1).On this pipeline, near the side of LNG storage tank (1), arrange respectively LNG storage tank gas phase mouth valve (3), LNG storage tank liquid phase mouth valve (2), for control LNG storage tank (1) feed liquor and give vent to anger, on this pipeline, near the side of LNG tank car (13), LNG tank car liquid phase liquid outlet valve (12) is set, for the fluid of control LNG tank car (13).On the pipeline of the outlet side of vaporizer (5), be provided with safety valve (6), and thermometer (7), pressure gauge (8).
Before unloading, the pressure of general LNG storage tank (1) at the pressure of 5kg, LNG tank car (13) at 1kg.So, first LNG storage tank gas phase mouth valve (3) in system and LNG tank car liquid phase liquid outlet valve (12) are opened during operation, high pressure BOG gas in LNG storage tank (1) will enter into LNG tank car (13) by pipeline, high pressure BOG gas enters into LNG tank car (13) liquid phase bottom, by the LNG liquid phase of low temperature, rise to the top of LNG tank car (13), play the effect of cooling step-down.When LNG storage tank (1) and LNG tank car (13) pressure balanced time, approximately reach 3kg.At this moment close LNG storage tank gas phase mouth valve (3) and LNG tank car liquid phase liquid outlet valve (12), open LNG tank car liquid phase mouth valve (11), vaporizer liquid phase liquid entering hole valve (4), vaporizer gas phase air outlet valve (9), LNG tank car gas phase mouth valve (10) four valves successively.Liquid LNG in LNG tank car (13) enters into vaporizer (5) pressure build-up vaporized, and then gets back in LNG tank car (13), is LNG tank car (13) supercharging.When the pressure of LNG tank car (13) is increased to 6kg time, close LNG tank car liquid phase mouth valve (11), vaporizer liquid phase liquid entering hole valve (4), vaporizer gas phase air outlet valve (9), LNG tank car gas phase mouth valve (10) four valves.At this moment the pressure height 3kg of the pressure ratio storage tank of tank car, can utilize pressure difference to unload.At this moment open LNG tank car liquid phase liquid outlet valve (12) and LNG storage tank liquid phase mouth valve (2), utilize pressure difference that the LNG in LNG tank car (13) is discharged in LNG storage tank (1).
Claims (5)
1. LNG is from a supercharging unloading unit, and it comprises LNG storage tank and LNG tank car, it is characterized in that also including vaporizer, and the liquid phase liquid entering hole of vaporizer is connected with the liquid phase mouth of LNG tank car, and the pipeline connected is provided with valve; The gas phase air outlet of vaporizer is connected with the gas phase mouth of LNG tank car, and the pipeline connected is provided with valve; The liquid outlet of LNG tank car is connected with the liquid phase mouth of LNG storage tank and gas phase mouth respectively, and the pipeline connected is provided with valve.
2. a kind of LNG according to claim 1 is from supercharging unloading unit, it is characterized in that the valve on the pipeline that the liquid phase liquid entering hole of vaporizer is connected with the liquid phase mouth of LNG tank car comprises the vaporizer liquid phase liquid entering hole valve of the one end near vaporizer, with the LNG tank car liquid phase mouth valve near LNG tank car one end.
3. a kind of LNG according to claim 1 is from supercharging unloading unit, it is characterized in that the valve on the pipeline that the gas phase air outlet of vaporizer is connected with the gas phase mouth of LNG tank car comprises the vaporizer gas phase air outlet valve of the one end near vaporizer, with the LNG tank car gas phase mouth valve near LNG tank car one end.
4. a kind of LNG according to claim 1 is from supercharging unloading unit, it is characterized in that the valve on the pipeline that the liquid outlet of LNG tank car is connected with liquid phase mouth and the gas phase mouth of LNG storage tank respectively comprises LNG storage tank gas phase mouth valve and the LNG storage tank liquid phase mouth valve of close LNG storage tank one end, with the LNG tank car liquid phase liquid outlet valve near LNG tank car one end.
5. a kind of LNG according to claim 1 is from supercharging unloading unit, it is characterized in that on the pipeline of the gas phase air outlet of vaporizer, be also disposed with safety valve, thermometer (7) and pressure gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520809893.4U CN205118653U (en) | 2015-10-20 | 2015-10-20 | LNG is from pressure boost device of unloading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520809893.4U CN205118653U (en) | 2015-10-20 | 2015-10-20 | LNG is from pressure boost device of unloading |
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| Publication Number | Publication Date |
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| CN205118653U true CN205118653U (en) | 2016-03-30 |
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| CN201520809893.4U Active CN205118653U (en) | 2015-10-20 | 2015-10-20 | LNG is from pressure boost device of unloading |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927852A (en) * | 2016-07-15 | 2016-09-07 | 程同刚 | Natural gas unloading method |
| CN107559580A (en) * | 2017-10-16 | 2018-01-09 | 苏州工业园区服务外包职业学院 | A kind of device for the unloading of receiving station LNG tank cars overcharge |
| CN108953988A (en) * | 2018-07-26 | 2018-12-07 | 靳殷实 | A kind of vaporization of liquid hydrogen and self-supercharging device |
-
2015
- 2015-10-20 CN CN201520809893.4U patent/CN205118653U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927852A (en) * | 2016-07-15 | 2016-09-07 | 程同刚 | Natural gas unloading method |
| CN105927852B (en) * | 2016-07-15 | 2018-01-09 | 程同刚 | A kind of method of unloading of natural gas |
| CN107559580A (en) * | 2017-10-16 | 2018-01-09 | 苏州工业园区服务外包职业学院 | A kind of device for the unloading of receiving station LNG tank cars overcharge |
| CN108953988A (en) * | 2018-07-26 | 2018-12-07 | 靳殷实 | A kind of vaporization of liquid hydrogen and self-supercharging device |
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| C14 | Grant of patent or utility model | ||
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