CN207704284U

CN207704284U - A kind of LNG receiving stations discharging operations analogue system

Info

Publication number: CN207704284U
Application number: CN201820105407.4U
Authority: CN
Inventors: 胡德栋; 王子业
Original assignee: Qingdao University of Science and Technology
Current assignee: Qingdao University of Science and Technology
Priority date: 2018-01-22
Filing date: 2018-01-22
Publication date: 2018-08-07
Anticipated expiration: 2028-01-22

Abstract

The utility model is related to a kind of LNG receiving stations discharging operations analogue systems, including LNG cargo ships, LNG storage tank, four unloading arms, discharging pipeline, condensate drain tank, cycle cold insulation pipeline, regulating valve.LNG cargo ships are connected to discharging pipeline by unloading arm, and discharging pipeline is connected with LNG storage tank, and the pipeline other end runs in solidifying tank, and integral arrangement recycles cold insulation pipeline.The utility model LNG receiving stations discharging operations analogue system, simulate LNG receiving stations discharge process actual motion scene, realize that receiving station interior employee is trained discharge process practical operation, it is highly practical, employee's actual operational capacity can be improved, ensures LNG receiving stations discharge process safe and stable operation.

Description

A kind of LNG receiving stations discharging operations analogue system

Technical field

The utility model is related to a kind of LNG receiving stations discharging operations training system, specially a kind of LNG receiving stations discharging behaviour Make analogue system.

Background technology

With the continuous increasingly raising increased with environmental requirement of Chinese energy demand, domestic Large LNG receiving station builds If having welcome peak period with work, it is a system engineering that the initial station cargo ship of LNG receiving stations, which is unloaded, while being also that LNG is received Stand and build and the milestone of work, stand in great attention, in addition, since LNG is with inflammable and explosive characteristic so that LNG receiving stations discharging operations system complex, a kind of safe and efficient LNG receiving stations discharging operations analogue system of exploitation have weight Big meaning.

Utility model content

The purpose of this utility model is to provide a kind of displaying practical LNG receiving stations discharge process operation scene, realizes to LNG The simulation training system of receiving station's interior employee's practical operation training, securely and reliably, the operation for effectively improving employee is horizontal, ensures LNG receiving stations discharge process safe and stable operation.

The utility model technical solution used for the above purpose is：A kind of discharging operations emulation of LNG receiving stations System, including LNG cargo ships, LNG storage tank, four unloading arms, discharging pipeline, condensate drain tank, cycle cold insulation pipeline, regulating valve.LNG Cargo ship is connected to discharging pipeline by unloading arm, and discharging pipeline is connected with LNG storage tank, and the pipeline other end runs in solidifying tank, whole Arrangement cycle cold insulation pipeline.

A kind of LNG receiving stations discharge process Simulation system of lunar rover can be determined according to ship's cargo discharge pump total flow and be unloaded The quantity of the usage quantity of ship time unloading arm, usual three or four arm, unloading arm influences discharge rate, and three arm maximums can Up to 12000m3/h, four arm conveying capacities are up to 14000m3/h.

Description of the drawings

Fig. 1 is a kind of process schematic representation of LNG receiving stations discharge process Simulation system of lunar rover provided by the utility model.

In Fig. 1：1, LNG cargo ships；2, unloading arm 101；3, unloading arm 102；4, regulating valve 2001；5, regulating valve 2002； 6, regulating valve 2003；7, regulating valve 2004；8, condensate drain tank；9, regulating valve 2005；10, LNG storage tank；11, cold insulation pipeline is recycled； 12, unloading arm 103；13, regulating valve 2006；14, unloading arm 104；15, regulating valve 2007；16, regulating valve 2008；17, discharging Pipeline.

Specific implementation mode

As shown in Figure 1, LNG cargo ships 1 pass through unloading arm 1012, unloading arm 1023, unloading arm 10312, unloading arm 104 14 are connected to discharging pipeline 17, and discharging pipeline 17 is connected with LNG storage tank 10, and the pipeline other end runs in solidifying tank 8, integral arrangement cycle Cold insulation pipeline 11.

The use process of this Simulation system of lunar rover：After LNG cargo ships 1 reach LNG ship harbour, always flowed according to ship's cargo discharge pump Amount determines that the usage quantity for unloading ship time unloading arm, the quantity of usual three or four arm, unloading arm influence discharge rate, three arm Maximum is up to 12000m3/h, and four arm conveying capacities are up to 14000m3/h.For four arm standard-sized sheets, regulating valve is opened 2002,2001,2007,2006, LNG is pressurizeed by cargo discharge pump in cabin, and discharge duct is pooled to through unloading arm 101,102,103,104 Line 17 is opened regulating valve 2003,2004, is transported in LNG storage tank 10 by discharging pipeline 17.Prison of the unloading operation in operator Control is lower to be carried out, and main operation point is control system pressure.Unloading arm is fitted with fast on every unloading arm by hydraulic system operation Fast ejection escape connector and interlock system, in case of emergency, LNG cargo ships can be quickly and safely detached from unloading arm.LNG into Enter the BOG that 10 postposition of storage tank swaps out to return in LNG cargo ship cabins by pipeline, to keep the pressure balance of system.LNG ship It arrives at before receiving station, the operating pressure of storage tank is typically maintained in 17KPa or so.At unloading initial stage, the smaller unloading flow of use It cools down LNG unloading arms, discharging pipeline, LNG storage tank (first charging) and auxiliary equipment, avoids generating excessive boil-off gas, into And cause to be more than the load of evaporation gas processing system and be discharged into torch.After the completion of cooling, start to gradually increase discharging flow Until design value.In unloading operates, maintaining the pressure in storage tank relatively high, BOG is generated in storage tank in discharge process to reduce Amount.BOG is back to using the pressure difference between LNG storage tank and LNG ship cargo hold in the cabin of low pressure, ensures cabin pressure balance, discharging Flow will determine BOG returning air-flow amounts.Regulating valve 2008 is opened, before discharging operations are completed to disconnect unloading arm connection, to discharging LNG carries out condensate drain in arm, and is stored into condensate drain tank 8.Regulating valve 2005 is opened during the normal operating of no unloading to pass through Cycle cold insulation pipeline 11 is recycled to LNG storage tank 10 with small flow LNG through discharging pipeline 17, to keep LNG discharging pipelines to be in cold State is spare.

A kind of LNG receiving stations discharge process Simulation system of lunar rover of the utility model, simulates true LNG receiving stations discharge process Operation scene, highly practical, the practical operation for effectively improving employee is horizontal, ensures LNG receiving stations discharge process safety and stability fortune Row.

Claims

1. a kind of LNG receiving stations discharging operations analogue system, it is characterised in that：Including LNG cargo ships (1), unloading arm 101 (2), Unloading arm 102 (3), regulating valve 2001 (4), regulating valve 2002 (5), regulating valve 2003 (6), regulating valve 2004 (7), condensate drain tank (8), regulating valve 2005 (9), LNG storage tank (10), cycle cold insulation pipeline (11), unloading arm 103 (12), regulating valve 2006 (13), Unloading arm 104 (14), regulating valve 2007 (15), regulating valve 2008 (16), discharging pipeline (17), LNG cargo ships (1) pass through discharging Arm 101 (2), unloading arm 102 (3), unloading arm 103 (12), unloading arm 104 (14) are connected to discharging pipeline (17), discharging pipeline (17) it is connected with LNG storage tank (10), the pipeline other end runs in solidifying tank (8), and integral arrangement recycles cold insulation pipeline (11).

2. a kind of LNG receiving stations discharging operations analogue system according to claim 1, it is characterised in that：The system can be with The usage quantity for unloading ship time unloading arm, usual three or four arm, the quantity of unloading arm are determined according to ship's cargo discharge pump total flow Discharge rate is influenced, three arm maximums are up to 12000m3/h, and four arm conveying capacities are up to 14000m3/h.