CN204785542U - Retrieve liquefied natural gas car liquid fuel's device - Google Patents

Abstract

The utility model provides a retrieve liquefied natural gas car liquid fuel's device, it includes on -vehicle LNG storage tank (2), LNG retrieves storage tank (10), empty temperature vaporizer (4), the inlet of on -vehicle LNG storage tank (2) is connected with empty temperature vaporizer (4) export and on -vehicle LNG storage tank manometer (1) respectively, the liquid outlet of on -vehicle LNG storage tank (2) links to each other with gate valve (3) import, gate valve (3) export is imported and flowmeter (11) access connection with empty temperature vaporizer stop valve (6) respectively, empty temperature vaporizer stop valve (6) export in proper order with empty temperature vaporizer check valve (5) and empty warm vaporizer (4) access connection, storage tank stop valve (7) is retrieved with LNG in proper order to flowmeter (11) export, LNG retrieves storage tank check valve (8) and LNG retrieves storage tank (10) connection, LNG retrieves storage tank manometer (9) and is connected with LNG recovery storage tank (10). The utility model has the advantages of simply, safety.

Description

Reclaim the device of LNGV (liquefied natural gas vehicle) liquid fuel

Technical field

The utility model belongs to a kind of liquid fuel recovering device, is specifically related to a kind of device reclaiming LNG (LNG Liquefied natural gas) vehicle liquid fuel.

Background technique

Along with the continuous enhancing of social environment consciousness, this cleaning new energy of LNG in flourish trend, will estimate that the amplification with average annual 9.93% increases by Natural Gas In China demand fast.Automobile-used LNG will become the most important downstream consumption field of LNG Liquefied natural gas, be expected to reach 82% of LNG total quantity consumed.While the development like a raging fire of LNG automobile, also expose the problem of some safety and wasting of resources aspect.When LNG automobile does not use for a long time, the LNG having 5% can be vaporized and diffuse by every day, until all liquid fuels waste.Particularly when LNG automobile parking is in the garage closed, rock gas accumulates to explosion limit, may cause serious explosive accident.

Summary of the invention

The purpose of this utility model is to provide a kind of simple, the device of the recyclable LNG vehicle liquid fuel of safety.

The utility model is by the pressure difference between vehicle-mounted LNG storage tank and LNG recovery storage tank, and the LNG in vehicle-mounted LNG storage tank is pressed into LNG and reclaims in storage tank, the rock gas gas produced by the vaporization of sky temperature vaporizer increases vehicle-mounted LNG storage tank pressure.The pressure high-low limits of two LNG storage tank is set, controls the opening and closing of stop valve.By the monitoring of flowmeter, control the aperture of stop valve in real time, to ensure that LNG stream is steadily dynamic.

The utility model realizes like this, it comprises vehicle-mounted LNG storage tank, LNG reclaims storage tank, empty warm vaporizer, it is characterized in that the liquid entering hole of vehicle-mounted LNG storage tank is connected with sky temperature vaporizer outlets, vehicle-mounted LNG storage tank pressure gauge is connected with the liquid entering hole of vehicle-mounted LNG storage tank, the liquid outlet of vehicle-mounted LNG storage tank is connected with gate valve import, gate valve outlet is connected with the stop valve import of sky temperature vaporizer and flowmeter import respectively, empty warm vaporizer stop valve outlet is connected with sky temperature vaporizer safety check and sky temperature carburetor inlet successively, flowmeter outlet reclaims storage tank stop valve with LNG successively, LNG reclaims storage tank safety check and is connected with LNG recovery storage tank, LNG recovery pressure of storage tank table reclaims storage tank with LNG and is connected, vehicle-mounted LNG storage tank pressure gauge controls empty temperature vaporizer stop valve, LNG reclaims pressure of storage tank table control LNG and reclaims storage tank stop valve.

LNG recovery tank material as above, material rate, making method are identical with vehicle-mounted LNG storage tank with method of inspection.

LNG stream body pipeline as above and valve material are 304 stainless steels, and do isothermal holding.

Effect of the present invention is: for the LNG automobile do not used for a long time, and adopt this device liquid fuel in vehicle-mounted storage tank can be reclaimed, theoretical recovery can reach 98%.Decrease LNG vaporization emptying waste, reduce the danger of the accident of blasting.The utility model structure is simple, use safety.

Accompanying drawing explanation

Fig. 1 originally uses the structural representation of novel recovery LNG vehicle liquid fuel-device

As shown in the figure: 1 is vehicle-mounted LNG storage tank pressure gauge, 2 is vehicle-mounted LNG storage tank, 3 is gate valves, and 4 is empty temperature vaporizers, and 5 is vehicle-mounted LNG storage tank safety check, 6 is vehicle-mounted LNG storage tank stop valves, 7 is that LNG reclaims storage tank stop valve, and 8 is that LNG reclaims storage tank safety check, and 9 is that LNG reclaims pressure of storage tank table, 10 is that LNG reclaims storage tank, and 11 is flowmeters.

Embodiment

Below in conjunction with accompanying drawing, implementation process of the present invention is further described.

Embodiment 1

A kind of device reclaiming LNG (LNG Liquefied natural gas) vehicle liquid fuel, it comprises vehicle-mounted LNG storage tank, LNG reclaims storage tank, empty warm vaporizer, the liquid entering hole of vehicle-mounted LNG storage tank exports with sky temperature vaporizer 4 and is connected, vehicle-mounted LNG storage tank pressure gauge 1 is connected with the liquid entering hole of vehicle-mounted LNG storage tank, the liquid outlet of vehicle-mounted LNG storage tank is connected with gate valve 3 import, gate valve 3 exports and is connected with stop valve 6 import of sky temperature vaporizer and flowmeter 11 import respectively, empty warm vaporizer stop valve 6 exports and is connected with sky temperature vaporizer safety check 5 and the import of sky temperature vaporizer 4 successively, flowmeter 11 exports and reclaims storage tank stop valve 7 with LNG successively, LNG reclaims storage tank safety check 8 and is connected with LNG recovery storage tank 10, LNG recovery pressure of storage tank table 9 reclaims storage tank 10 with LNG and is connected, vehicle-mounted LNG storage tank pressure gauge 1 controls empty temperature vaporizer stop valve 6, LNG reclaims pressure of storage tank table 9 control LNG and reclaims storage tank stop valve 7.

Device connects complete and after checked tightness, because the working pressure of vehicle-mounted LNG storage tank is generally 1.0-1.6MPa, it is atmospheric pressure state that LNG reclaims storage tank, when opening gate valve 3, LNG in vehicle-mounted LNG storage tank 2 under two tank differential pressure actions, can be pressed into LNG and reclaims in storage tank 10.The effect of flowmeter 11 is the flows of LNG in Real-Time Monitoring pipeline, and along with uninterrupted change, controls the aperture of vehicle-mounted LNG storage tank stop valve 7, to ensure that LNG can flow into LNG reposefully and reclaim storage tank 10.LNG is set and reclaims storage tank safety check 8, to ensure that the LNG that LNG reclaims in storage tank 10 can not flow back in vehicle-mounted LNG storage tank 2.The pressure change in LNG recovery storage tank 10 monitored by LNG recovery pressure of storage tank table 9, after pressure reaches pressure of storage tank CLV ceiling limit value, automatically can reclaim storage tank stop valve 7 by control closedown LNG.Along with the carrying out of callback course, vehicle-mounted LNG storage tank 2 internal pressure reduces gradually, after pressure is reduced to lower limit, vehicle-mounted LNG storage tank pressure gauge 1 controls empty temperature vaporizer stop valve 6 and opens, liquid outlet can be shunted one and enter vaporization in empty temperature vaporizer 4 and become rock gas gas, enter vehicle-mounted LNG storage tank 2 to increase tank inner pressure, promote LNG stream and enter in LNG recovery storage tank 10.Pressure change in the vehicle-mounted LNG storage tank 2 of vehicle-mounted LNG storage tank pressure gauge 1 Real-Time Monitoring, after pressure reaches pressure of storage tank CLV ceiling limit value, can control to close vehicle-mounted LNG storage tank stop valve 6 automatically.The setting of vehicle-mounted LNG storage tank safety check 5, ensures that LNG and vaporized natural can not reflux.

Claims (2)

1. one kind is reclaimed the device of LNGV (liquefied natural gas vehicle) liquid fuel, it comprises vehicle mounted liquefied natural gas container (2), LNG Liquefied natural gas reclaims storage tank (10), empty warm vaporizer (4), it is characterized in that the liquid entering hole of vehicle mounted liquefied natural gas container (2) exports with sky temperature vaporizer (4) to be connected, vehicle mounted liquefied natural gas container pressure gauge (1) is connected with the liquid entering hole of vehicle mounted liquefied natural gas container (2), the liquid outlet of vehicle mounted liquefied natural gas container (2) is connected with gate valve (3) import, gate valve (3) outlet is connected with stop valve (6) import of sky temperature vaporizer and flowmeter (11) import respectively, empty warm vaporizer stop valve (6) outlet is connected with sky temperature vaporizer safety check (5) and sky temperature vaporizer (4) import successively, flowmeter (11) outlet reclaims storage tank stop valve (7) with LNG Liquefied natural gas successively, LNG Liquefied natural gas reclaims storage tank safety check (8) and is connected with LNG Liquefied natural gas recovery storage tank (10), LNG Liquefied natural gas recovery pressure of storage tank table (9) reclaims storage tank (10) import with LNG Liquefied natural gas and is connected, vehicle mounted liquefied natural gas container pressure gauge (1) controls empty temperature vaporizer stop valve (6), LNG Liquefied natural gas reclaims pressure of storage tank table (9) and controls LNG Liquefied natural gas recovery storage tank stop valve (7).

2. a kind of device reclaiming LNGV (liquefied natural gas vehicle) liquid fuel as claimed in claim 1, is characterized in that the valve of use and pipeline material are 304 stainless steels, and does isothermal holding.