Guihe Automatic tank gauge, magnetostrictive probe for petrol staiton

What’s the difference between CNG, LNG, LPG filling station

The following is a brief summary highlighting the main differences of these fuels. Much more comprehensive details of the fuel properties and compositions

1.Compressed Natural Gas or CNG is stored on the vehicle in high-pressure tanks - 20 to 25 MPa (200 to 250 bar, or 3,000 to 3,600 psi). Natural gas consists mostly of methane and is drawn from gas wells or in conjunction with crude oil production. As delivered through the pipeline system, it also contains hydrocarbons such as ethane and propane as well as other gases such as nitrogen, helium, carbon dioxide, sulphur compounds, and water vapour. A sulphur-based odourant is normally added to CNG to facilitate leak detection. Natural gas is lighter than air and thus will normally dissipate in the case of a leak, giving it a significant safety advantage over gasoline or LPG.  

Sample cng station -CNG DAUGHTER SATION

L-CNG STATION

L-CNG dispensing device is consisted of LNG storage tank, unloading immersed pump, cryogenic piston pump, high-pressure vaporizer, sequence control panel, storage cylinder set, gas dispenser, pipeline and valve. The station control system includes PLC control system, gas alarm system, instrument system, flame detecting system (optional) and lighting system.

2. Liquefied Natural Gas or LNG is natural gas stored as a super-cooled (cryogenic) liquid. The temperature required to condense natural gas depends on its precise composition, but it is typically between -120 and -170°C (-184 and –274°F). The advantage of LNG is that it offers an energy density comparable to petrol and diesel fuels, extending range and reducing refuelling frequency.

The disadvantage, however, is the high cost of cryogenic storage on vehicles and the major infrastructure requirement of LNG dispensing stations, production plants and transportation facilities. LNG has begun to find its place in heavy-duty applications in places like the china , US, the UK and some countries in Europe. CHINA natural gas demand boost,now own more natural gas station than any other country.

LNG STATION :

3.Liquefied Petroleum Gas or LPG (also called Autogas) consists mainly of propane, propylene, butane, and butylene in various mixtures. It is produced as a by-product of natural gas processing and petroleum refining. The components of LPG are gases at normal temperatures and pressures. One challenge with LPG is that it can vary widely in composition, leading to variable engine performance and cold starting performance. At normal temperatures and pressures, LPG will evaporate. Because of this, LPG is stored in pressurised steel bottles. Unlike natural gas, LPG is heavier than air, and thus will flow along floors and tend to settle in low spots, such as basements. Such accumulations can cause explosion hazards, and are the reason that LPG fuelled vehicles are prohibited from indoor parkades in many jurisdictions.

LPG FILLING STATION

But there have another kind new fuel ,now some counry already begin use .

Hydrogen or H2 gas is highly flammable and will burn at concentrations as low as 4% H2 in air. For automotive applications, hydrogen is generally used in two forms: internal combustion or fuel cell conversion. In combustion, it is essentially burned as conventional gaseous fuels are, whereas a fuel cell uses the hydrogen to generate electricity that in turn is used to power electric motors on the vehicle. Hydrogen gas must be produced and is therefore is an energy storage medium, not an energy source. The energy used to produce it usually comes from a more conventional source. Hydrogen holds the promise of very low vehicle emissions and flexible energy storage; however, many believe the technical challenges required to realize these benefits may delay hydrogen’s widespread implementation for several decades.

Hydrogen can be obtained through various thermochemical methods utilizing methane (natural gas), coal, liquified petroleum gas, or biomass (biomass gasification), from electrolysis of water, or by a process called thermolysis. Each of these methods poses its own challenges.

Petrol Station Fuel Management System

Automatic Tank Gauging System

Magnetostrictive Liquid Level Meter (Tank gauging system) for gas stations produced by Guihe consists of Probe and Touch Control Console. There are different plans to satisfy different customers according to their effective demands.

Solution:

(SYW-A )Probe + (TCM-1 )Touch Control Console + Central Control System 

●Industrial design, long service life, fast in running.

●Excellent compatibility with different brand Central Control System.

●Integrated design for the safety barrier and control console in order to easy installation and lower the cost.

●Information are stored in memory for future inquiry.

●It enjoys a tank tilt compensation function

●It can connect with explosion-proof ringer outdoors avoiding the product spilled

●With an embedded printer it can print inventory reports, delivery reports, leak reports and shift reports

●It can monitor up to 12 tanks and display dynamically the product level and water level with colored graphics in proportion.

●After connected with Central Control System though internet, it can provide information for manager to manage the inventory, delivery and the sale of the product.

Guihe Magnetostrictive Probe with the best price

The probe consist of: 

Fully enclosed magnetostrictive probe.

Electronic Pod using for data measuring and transforming.

Floater made according to the product.

Features:

Safety: ExiaIIBT4 (Intrinsically safe) issued by PCEC

Accuracy: level accuracy is ±0.3mm

Stability: strong anti-jamming ability

Efficiency: less than 1 second to test one tank.

Probe Performance

Item	SYW-A
Purpose	To measure product level, water level and temperature
Titles of medium	Gasoline, diesel, kerosene, ethanol , water etc.
State of medium	Liquid
Explosion-proof grade	ExiaIIBT4 (Intrinsically safe)
Pressure range	-0.02Mpa~0.6Mpa
Certificate	PCEC Conformity Certificate of Explosion-proof / Permit of Manufacture Measuring Instruments
Temperature	-40℃~70℃
Product Level Accuracy	±0.3mm
Water Level Accuracy	±0.3mm
Temperature Accuracy	±0.2℃
Height Resolution	0.023mm
Repeatability	±0.1mm
Temperature Effect	Error<0.2mm
Vibration Effect	Error<0.5mm
Lowest Product Inactive Zone	2.5'' floater-180mm
Lowest Water Inactive Zone	2.5'' floater-25mm
Measured Variable	Product level, interface level and temperature of  5 sensors and average temperature
Probe Length	600~4000mm
Method of Communication	RS-485
Probe Material	1Cr18Ni9Ti
Power Supply	+24~26VDC
Protection Class of Probe Canister	IP67
Max Communication Distance	1200m

Guihe Automatic Tank gauge:http://qdguihe.ecer.com