CN202252837U - Liquefied natural gas ship loading and unloading system - Google Patents
Liquefied natural gas ship loading and unloading system Download PDFInfo
- Publication number
- CN202252837U CN202252837U CN 201120338536 CN201120338536U CN202252837U CN 202252837 U CN202252837 U CN 202252837U CN 201120338536 CN201120338536 CN 201120338536 CN 201120338536 U CN201120338536 U CN 201120338536U CN 202252837 U CN202252837 U CN 202252837U
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- ship
- unloading
- lng
- natural gas
- liquefied natural
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Abstract
The utility model discloses a liquefied natural gas (LNG) ship loading and unloading system, which comprises a ship unloading subsystem and a ship loading subsystem, wherein the ship unloading subsystem comprises a ship unloading branch pipe, a ship unloading main pipe, an LNG storage tank and a low-pressure output main pipe; the ship loading subsystem comprises a ship loading pipeline arranged between the low-pressure output main pipe and the ship unloading main pipe, a control valve and a control meter which are arranged on the ship loading pipeline, a bypass arranged on a check valve of the ship unloading branch pipe and a cooling bypass arranged on a regulating valve or a stop valve of the ship unloading branch pipe.
Description
Technical field
The utility model relates to the LNG Liquefied natural gas field, unloads a ship and ship-loading system in particular to a kind of LNG Liquefied natural gas.
Background technique
Fig. 1 is a LNG Liquefied natural gas ship-unloading system schematic representation in the existing technology.In Fig. 1, A is the LNG ship, and B1, B2 are the LNG storage tank, and it is defeated that on behalf of the low pressure delivery trunk, arrow C go outside the downstream.As shown in Figure 1, (Liquefied Natural Gas, LNGD receiving station only can carry out ship-discharging operation to present domestic LNG Liquefied natural gas, promptly from the LNG cargo ship, LNG are discharged into the LNG storage tank.Because domestic LNG receiving station belongs to emerging industry; LNG mainly perhaps with tank car with low temperature liquid form outward is delivered to user through the back pipeline that gasifies is defeated outward; So receiving station does not all load transport function onto ship, just all LNG is not transported to the function on the LNG cargo ship from receiving station.The LNG receiving station that has built up is positioned at the hinterland mostly, also can't realize shipment outward transport function, has so just limited the range of operation and the adaptive capacity of LNG receiving station.
The model utility content
The utility model provides a kind of LNG Liquefied natural gas to unload a ship and ship-loading system, in order to improve the range of operation and the adaptive capacity of LNG receiving station.
For achieving the above object; The utility model provides a kind of LNG Liquefied natural gas to unload a ship and ship-loading system, and it comprises the subtense angle of unloading a ship, and the subtense angle of unloading a ship comprises the arm of unloading a ship, the house steward that unloads a ship, LNG storage tank and low pressure delivery trunk; Also comprise the shipment subtense angle, the shipment subtense angle comprises:
Pipeline is used in shipment, is arranged on the low pressure delivery trunk and unloads a ship between house steward's end;
Control valve and control instrument are arranged on shipment with on the pipeline;
Bypass is arranged on the safety check place of the arm of unloading a ship;
Bypass is used in cooling, is arranged on the regulating valve or the cut-off valve place of the arm of unloading a ship.
Preferable, above-mentioned LNG Liquefied natural gas is unloaded a ship and ship-loading system also comprises:
Mix cross-line, be arranged on the export pipeline of LNG storage tank and unload a ship between the intake pipeline;
Wherein, mix cross-line and be provided with control valve.
Preferable, the number of LNG storage tank is at least 2.
The foregoing description is through improving the LNG ship-unloading system; Except LNG receiving station is possessed the function of normally unloading, also make its function that possesses shipment transhipment, make LNG receiving station except as the LNG receiving terminal; Also possess LNG and use the defeated function of low temperature cargo ship transfer outward; Can satisfy the demand of other areas like this to LNG, when particularly defeated condition does not possess outside LNG receiving station downstream pipe network, can be with the stock movement in the LNG storage tank to other LNG receiving station or satellite station.Capacity is big because shipping has, the unit transport low cost and other advantages, compares with newly-built rock gas multi-purpose station pipeline or tank car transportation, can significantly reduce overall outer defeated expense.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a LNG Liquefied natural gas ship-unloading system schematic representation in the existing technology;
Fig. 2 unloads a ship and the ship-loading system schematic representation for the utility model one embodiment's LNG Liquefied natural gas.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technological scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not paying the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
In the utility model embodiment, receiving station transforms to LNG Liquefied natural gas, and its method with rotating function in the shipment can be summarized as follows:
(1) at the low-pressure delivery pipeline with unload a ship and add bypass between pipeline, and the safety check on the arm of will unloading a ship adds bypass, adds the unload a ship bypass line of arm of precooling again, and LNG receiving station can be loaded onto ship.
(2) utilize low-pressure delivery pipeline and the cross-line that mixes that unloads between ship time LNG storage tank feeding line, and the safety check on the arm of will unloading a ship adds bypass, add the unload a ship bypass line of arm of precooling again, LNG receiving station can be loaded onto ship in order to prevent that the LNG storage tank from rolling.
(3) at the low-pressure delivery pipeline with unload a ship and add interim pipeline between pipeline, and the safety check on the arm of will unloading a ship adds bypass, adds the unload a ship bypass line of arm of precooling again, and LNG receiving station can be loaded onto ship.
Fig. 2 unloads a ship and the ship-loading system schematic representation for the utility model one embodiment's LNG Liquefied natural gas.In Fig. 2, A is the LNG ship, and B1, B2 are the LNG storage tank, and it is defeated that on behalf of the low pressure delivery trunk, arrow C go outside the downstream, and FC is flow control.
As shown in Figure 2, this system comprises the subtense angle of unloading a ship (as shown in Figure 1), and the subtense angle of unloading a ship comprises the arm of unloading a ship, the house steward that unloads a ship, LNG storage tank and low pressure delivery trunk, also comprises the shipment subtense angle, and the shipment subtense angle comprises:
Pipeline is used in shipment, is arranged on the low pressure delivery trunk and unloads a ship between house steward's end;
Control valve V13, V14 and control instrument FC are arranged on shipment with on the pipeline;
Bypass is arranged on the safety check place of the arm of unloading a ship;
Bypass is used in cooling, is arranged on valve V1, V2, V3 or cut-off valve XV1, XV2, the XV3 place of the arm of unloading a ship.
For example, above-mentioned LNG Liquefied natural gas is unloaded a ship and ship-loading system also comprises:
Mix cross-line, be arranged on the export pipeline of LNG storage tank and unload a ship between the intake pipeline;
Wherein, mix cross-line and be provided with control valve V7, V8.
For example, in the foregoing description, the number of LNG storage tank is at least 2.
The foregoing description is through improving the LNG ship-unloading system; Except LNG receiving station is possessed the function of normally unloading, also make its function that possesses shipment transhipment, make LNG receiving station except as the LNG receiving terminal; Also possess LNG and use the defeated function of low temperature cargo ship transfer outward; Can satisfy the demand of other areas like this to LNG, when particularly defeated condition does not possess outside LNG receiving station downstream pipe network, can be with the stock movement in the LNG storage tank to other LNG receiving station or satellite station.Capacity is big because shipping has, the unit transport low cost and other advantages, compares with newly-built rock gas multi-purpose station pipeline or tank car transportation, can significantly reduce overall outer defeated expense.
Use the defeated function of low temperature cargo ship transfer outward for rock gas receiving station is had, unload a ship and ship-loading system to the utility model LNG Liquefied natural gas shown in Figure 2, can adopt following LNG Liquefied natural gas shipment method, this method may further comprise the steps:
Open shipment with valve V13, V14 on the pipeline and valve V1, V2, the V3 on the arm of unloading a ship; Close cut-off valve XV1, XV2, XV3 on the arm of unloading a ship; Slowly open valve V4, V5, the V6 of cooling, the pipeline of unloading a ship arm and link to each other with the arm of unloading a ship is carried out precooling with bypass;
Precooling is pressurizeed to the LNG in the LNG storage tank through low pressure pump after accomplishing, and is delivered on the ship with pipeline, the house steward that unloads a ship, the arm of unloading a ship through low-pressure delivery house steward, shipment;
Wherein, the BOG that course of conveying produces will be back to the LNG storage tank along the gas phase return line, in order to keep the pressure balance of LNG storage tank and compartment.
Use the defeated function of low temperature cargo ship transfer outward for rock gas receiving station is had, unload a ship and ship-loading system to the utility model LNG Liquefied natural gas shown in Figure 2, also can adopt following LNG Liquefied natural gas shipment method, this method may further comprise the steps:
Valve V7, V8 on the unlatching mixing cross-line and valve V1, V2, the V3 on the arm of unloading a ship; Close cut-off valve XV1, XV2, XV3 on the arm of unloading a ship; Slowly open valve V4, V5, the V6 of cooling, the pipeline of unloading a ship arm and link to each other with the arm of unloading a ship is carried out precooling with bypass;
Precooling is pressurizeed to the LNG in the LNG storage tank through low pressure pump after accomplishing, and is delivered on the ship through mixing cross-line, the house steward that unloads a ship, the arm of unloading a ship;
Wherein, the BOG that course of conveying produces will be back to the LNG storage tank along the gas phase return line, in order to keep the pressure balance of LNG storage tank and compartment.
In the above-described embodiments, load onto ship, can make LNG receiving station increase the function of transfer according to above-mentioned flow and method.Can satisfy the LNG demand of a lot of LNG satellite stations on every side like this, when particularly defeated condition does not possess outside LNG receiving station downstream line, can be with the stock movement in the LNG storage tank to other LNG receiving station or LNG satellite station on every side.
One of ordinary skill in the art will appreciate that: accompanying drawing is an embodiment's a schematic representation, and module in the accompanying drawing or flow process might not be that enforcement the utility model is necessary.
One of ordinary skill in the art will appreciate that: the module in the device among the embodiment can be described according to embodiment and be distributed in embodiment's the device, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
What should explain at last is: above embodiment is only in order to the technological scheme of explanation the utility model, but not to its restriction; Although the utility model has been carried out detailed explanation with reference to previous embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that previous embodiment is put down in writing, and perhaps part technical characteristics wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of essence disengaging the utility model embodiment technological scheme of relevant art scheme.
Claims (3)
1. a LNG Liquefied natural gas is unloaded a ship and ship-loading system, comprises the subtense angle of unloading a ship, and the said subtense angle of unloading a ship comprises the arm of unloading a ship, the house steward that unloads a ship, LNG storage tank and low pressure delivery trunk, it is characterized in that also comprise the shipment subtense angle, said shipment subtense angle comprises:
Pipeline is used in shipment, is arranged between said low pressure delivery trunk and the said house steward's of the unloading a ship end;
Control valve and control instrument are arranged on said shipment with on the pipeline;
Bypass is arranged on the safety check place of the arm of unloading a ship;
Bypass is used in cooling, is arranged on the regulating valve or the cut-off valve place of the said arm of unloading a ship.
2. LNG Liquefied natural gas according to claim 1 is unloaded a ship and ship-loading system, it is characterized in that, also comprises:
Mix cross-line, be arranged on the export pipeline of LNG storage tank and unload a ship between the intake pipeline;
Wherein, said mixing cross-line is provided with control valve.
3. LNG Liquefied natural gas according to claim 1 is unloaded a ship and ship-loading system, it is characterized in that, the number of said LNG storage tank is at least 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120338536 CN202252837U (en) | 2011-09-09 | 2011-09-09 | Liquefied natural gas ship loading and unloading system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120338536 CN202252837U (en) | 2011-09-09 | 2011-09-09 | Liquefied natural gas ship loading and unloading system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252837U true CN202252837U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120338536 Withdrawn - After Issue CN202252837U (en) | 2011-09-09 | 2011-09-09 | Liquefied natural gas ship loading and unloading system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252837U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322567A (en) * | 2011-09-09 | 2012-01-18 | 中国寰球工程公司 | Liquefied natural gas ship-unloading and ship-loading system and ship-loading method |
| CN110145684A (en) * | 2019-05-31 | 2019-08-20 | 中国空分工程有限公司 | A kind of low-temperature storage tank chilldown system and forecooling method |
| CN114929572A (en) * | 2019-12-24 | 2022-08-19 | 大宇造船海洋株式会社 | Liquefied gas supply system and method for ship and liquefied gas fuel supply system for ship |
-
2011
- 2011-09-09 CN CN 201120338536 patent/CN202252837U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102322567A (en) * | 2011-09-09 | 2012-01-18 | 中国寰球工程公司 | Liquefied natural gas ship-unloading and ship-loading system and ship-loading method |
| CN110145684A (en) * | 2019-05-31 | 2019-08-20 | 中国空分工程有限公司 | A kind of low-temperature storage tank chilldown system and forecooling method |
| CN110145684B (en) * | 2019-05-31 | 2023-08-29 | 中国空分工程有限公司 | Precooling system and precooling method for low-temperature storage tank |
| CN114929572A (en) * | 2019-12-24 | 2022-08-19 | 大宇造船海洋株式会社 | Liquefied gas supply system and method for ship and liquefied gas fuel supply system for ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |