CN204083792U

CN204083792U - A kind of tank car is detained LNG collecting device

Info

Publication number: CN204083792U
Application number: CN201420413242.9U
Authority: CN
Inventors: 洪峰
Original assignee: DONGGUAN XINAO VEHICLE GAS DEVELOPMENT Co Ltd
Current assignee: DONGGUAN XINAO VEHICLE GAS DEVELOPMENT Co Ltd
Priority date: 2014-07-24
Filing date: 2014-07-24
Publication date: 2015-01-07
Anticipated expiration: 2024-07-24

Abstract

The utility model relates to natural gas storage field application, is that a kind of tank car is detained LNG collecting device and collection process specifically.Comprise tank car gas phase pipe, supercharging gas phase pipe, BOG pipeline; Described tank car gas phase pipe connecting end is provided with pressure gauge; Described supercharging gas phase pipe is connected with threeway one end, is connected respectively by threeway with described tank car gas phase pipe with described BOG pipeline, and the unloading deck end position of described supercharging gas phase pipe is equipped with hand stop valve and safety check; Described each joint is provided with LNG leakage alarming device.Supercharging gas phase pipe and BOG pipeline are coupled together, the surplus rock gas in tank car is received urban pipe network to improve the gas taking rate of tank car storage tank, reduce gas station operation gas and damage.

Description

A kind of tank car is detained LNG collecting device

Technical field

The utility model relates to natural gas storage field application, is that a kind of tank car is detained LNG collecting device specifically.

Background technique

LNG is the abbreviation of LNG Liquefied natural gas English Liquefied Natural Gas.Namely LNG gas station supplies the filling station of LNG Liquefied natural gas LNG.When current energy source is day by day nervous, huge, clean, the efficient rock gas of reserves has become the energy most with prospects after oil and industrial chemicals.LNG gas station is for storing the minimum unit selling the LNG energy.

Wherein namely LNG in LNG tank car is evacuated to LNG storage tank by cryopump by the function of unloading of LNG gas station;

Function of increasing pressure divides LNG injection vaporizer to be gasificated into BOG(Boil Off Gas boil-off gas by tank inside) enter storage tank, stop when pressure of storage tank reaches setting pressure.

In order to smooth safety the LNG in LNG tank car is discharged in LNG storage tank, need to be equipped with LNG unloading unit.Current tank car has been unloaded two kinds of patterns: pump is unloaded and pressure reduction is unloaded, these two kinds of patterns are all after pressure balance, again to tank car supercharging, finally unload, it is general like this that will to be pressurized to 0.65MPa to tank car even higher, unsnatch rear tank car residual pressure generally at more than 0.4MPa, LNG wherein cannot extract and cause the rock gas being roughly equal to 160 kilograms to be trapped in tank car storage tank, formed gas station operation gas damage and by emptying.

Model utility content

The utility model is by coupling together supercharging gas phase pipe and BOG pipeline, a hand stop valve and safety check is installed additional at unloading deck supercharging gas phase pipe end, storage tank BOG muffler is closed before using, surplus rock gas in tank car is received urban pipe network to improve the gas taking rate of tank car storage tank, reduce gas station operation gas and damage.

The utility model for achieving the above object, provides a kind of LNG station tank car to be detained LNG collecting device, comprising: tank car gas phase pipe, supercharging gas phase pipe, BOG pipeline; Described tank car gas phase pipe connecting end is provided with pressure gauge; Described supercharging gas phase pipe is connected with threeway one end, is connected respectively by threeway with described tank car gas phase pipe with described BOG pipeline, and the unloading deck end position of described supercharging gas phase pipe is equipped with hand stop valve and safety check; Described each joint is provided with LNG leakage alarming device.

Further, each valves such as described hand stop valve and safety check are solenoid valve, and personnel manipulate operating console and control, and avoid producing electrical spark etc., ensure safety in production.

Be connected with the gas station of urban pipe network, during use, first closing the BOG muffler of LNG storage tank 9, open supercharging vaporizer, adjustment stop valve 6 opening degree, observed pressure table 4, carries out the collection of being detained LNG.Be detained the technique of LNG by the collection after improvement, effectively keep LNG storage tank and tank car storage tank pressure reduction, tank car pressure of storage tank is down to below 0.3MPa, improve the gas taking rate of tank car storage tank, be roughly equal to raising and get 40 kilograms, gas, minimizing gas station operation gas damages.Such as: according to the gas supply capacity of Wan Jiangzhan, will carry out 2 train number LNG tank cars every day and unload liquid operation, can extract about 80 kilograms more at every turn, according to the price of 7.1 yuan/kilogram, calculate by 30 days, the company that monthly can be reduces gas and damages, improve effects 17040 yuan.

The beneficial effects of the utility model are: 1, supercharging gas phase pipe and BOG pipeline are coupled together, and the surplus rock gas in tank car is received urban pipe network, improve the gas taking rate of tank car storage tank, reduce gas station operation gas and damage; 2, the valve used is solenoid valve, and leak outside absolutely stifled, interior leakage is easily controlled, and use safety avoids the potential safety hazard that electrical spark etc. causes; 3, install pressure gauge additional at tank car gas phase pipe end, each line connection adds warning device, can ensure that safety is unloaded, ensure the safe operation of gas station.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is structural representation of the present utility model;

In figure: 1 tank car gas phase pipe, 2 supercharging gas phase pipes, 3BOG pipeline, 4 pressure gauges, 5 threeways, 6 hand stop valves, 7 safety check, 8LNG leakage alarming device.

embodiment

Make the object of the utility model embodiment, technological scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.　

Embodiment 1:

A kind of LNG station tank car is as shown in Figure 1 detained LNG collecting device, comprising: tank car gas phase pipe 1, supercharging gas phase pipe 2, BOG pipeline 3; Described tank car gas phase pipe connecting end is provided with pressure gauge 4; Described supercharging gas phase pipe 2 is connected with threeway 5 one end, is connected respectively by threeway 5 with described tank car gas phase pipe 1 with described BOG pipeline 3, and the unloading deck end position of described supercharging gas phase pipe 2 is equipped with hand stop valve 6 and safety check 7; Described each joint is provided with LNG leakage alarming device 8.

Described hand stop valve 6 and safety check 7 are solenoid valve, and personnel manipulate operating console and control, and avoid producing electrical spark etc., ensure safety in production.

Below the utility model is described in detail, the above, be only the preferred embodiment of the utility model, when not limiting the utility model practical range, namely allly do impartial change according to the application's scope and modify, all should still belong in the utility model covering scope.

Claims

1. tank car is detained a LNG collecting device, it is characterized in that: comprise tank car gas phase pipe (1), supercharging gas phase pipe (2), BOG pipeline (3); Described tank car gas phase pipe connecting end is provided with pressure gauge (4); Described supercharging gas phase pipe (2) is connected with threeway (5) one end, be connected with described BOG pipeline (3) with described tank car gas phase pipe (1) respectively by threeway (5), the unloading deck end position of described supercharging gas phase pipe (2) is equipped with hand stop valve (6) and safety check (7); Described each joint is provided with LNG leakage alarming device (8).

2. tank car as claimed in claim 1 is detained LNG collecting device, it is characterized in that: described hand stop valve (6) and safety check (7) are solenoid valve.