WO2000066482A1

WO2000066482A1 - Closed oil supply devices

Info

Publication number: WO2000066482A1
Application number: PCT/KR2000/000407
Authority: WO
Inventors: Jung-Hoon Lee
Original assignee: Lee Jung Hoon
Priority date: 1999-04-29
Filing date: 2000-04-29
Publication date: 2000-11-09
Also published as: KR19990046808A; AU4435900A

Abstract

Disclosed is a closed supply method to transfer the oil from a feeding tank to a receiving tank and its relevant fueling system without any waste oil and air pollution, comprising an air tube for looping between both tank and sealing the contact, means for sealing the contact of oil tube to the receiving tank, an inlet of air at upper side of feeding tank for air returning, a film of the feeding tank for preventing reverse flow of returned air, an outlet of air at upper side of receiving tank for air cycling, a closed oil supply from a tank at the stations to a tank on vehicles such cars and airplanes, a sealing oil gun, a closed oil supply from an oil car to a storing tank at the stations, and a closed oil supply from a large tank of oil company to an oil car. As a result, a closed loop oil supply method with the related devices can provide the function of saving the vaporized oil and preventing the air contamination.

Description

CLOSED OIL SUPPLY DEVICES

FIELD OF THE INVENTION

The present invention relates to a method of oil supply from a feeding tank to a receiving tank and the related devices including an oil gun, more particularly to a new system of the closed fuel supply from one tank to another for saving the leakage of the oil.

BACKGROUNDD OF THE INVENTION When the oil is transferred from the feeding tank that have a sufficient oil into the receiving tank that requires to be filled, such as from a large tank of oil companies to a tank of oil cars, from the tank of oil cars to a storing tank of gas stations, from the storage tank of gas stations to a tank on vehicles, and from the tank of gas stations at airport to a tank on airplanes, currently both tanks are open to the air. The amount of air equal to that of the transferred oil gets into the feeding tank and the same quantity of air issues from the receiving tank into the atmosphere during transferring. Specially, in case of fuel transferring from the storing tank of gas stations to the tank on vehicles, naturally the air of the same quantity of the supplied fuel flows out through a separate outlet of the vehicle tank. And the same quantity of air gets into the

stations. Because both tanks are currently open during transferring at every timeT the oil faced with the air is always vaporized into the atmosphere. The air emitted from the fuel tank on cars contains a bit of vaporized oil. This leakage of oil continues to contaminate the atmosphere.

DETAIELD DESCRIPTION OF THE INVENTION

This invention is provided to solve the above mentioned problems, and it is an object of the present invention to provide a method to close and seal a supply loop of oil from the feeding tank to the receiving tank with a pipe for allowing a reverse flow of air from the receiving tank to the feeding tank.

The present invention has another object to provide a method to save the waste oil, which prevents atmosphere contamination. In order to accomplish these objects, this invention has adopted an air duct connected from the receiving tank to the feeding tank and entirely sealed the closed loop from the feeding tank to the receiving tank and reverse. Then as a desired amount of oil is transferred from the feeding tank to the receiving tank and the same amount of air in the receiving tank is moved to the feeding tank automatically. As a result, there is no waste oil and no atmosphere contamination.

Fig. 1 is a basic block diagram of the method of the closed oil supply for saving the vaporized oil and preventing air pollution. The oil generally includes gas, heavy and light oil, even aviation gas, and etc. This closed fueling system is constructed by an air tube (1) for connecting to the upper side of both tanks with shielding from the air, which allows the air in the feeding tank (2) to flow into the receiving tank (3) as oil transfers. The contact (4) of the oil pipe to the receiving tank is also sealed up. A valve (5) in the air tube and a supply valve (6) in the oil supply pipe are open in sequence. Then, the oil in the feeding tank is transferred to the receiving tank by means of a pump (7) and the air in the receiving tank equal amount of the transferred oil is moved to the feeding tank naturally. Automatically a film (8) at the outlet of the air duct is open when the air returns. After the desired quantity of the oil is supplied, the two valves are closed in reverse sequence. In the total process of the oil supply, the oil is not faced with the outer air and the air in the receiving oil flows to the feeding tank through the air duct. Hence, there is no oil vaporizing into the outer air. Since the structure of the closed oil supply method herein is very simple, the additional cost is low and the life of the equipment of the invention is almost permanent.

The invention is characterized in that the air duct is used to allow the air in the receiving tank to flow into the feeding tank, not to leak out into the air.

It is also characterized that the total closed oil and air path from the feeding tank to the receiving tank and the reverse is sealed from the outer atmosphere.

It is further characterized that there is no waste oil due to vaporizing as s result of fore-mentioned characteristics.

BRIEF DESCRIPTION OF THE DRAWINGS

The above object, features, and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which

FIG. 1 is a basic block diagram of a closed oil supply

FIG. 2 is a closed oil supply from a storing tank at gas station to the vehicle tanks. FIG. 3 is an oil gun for sealing the contact

FIG. 4 is a closed oil supply from an oil car to a storing tank at gas station. FIG. 5 is a closed oil supply from a large tank of oil company to a tank on an oil car.

EXAMPLE 1

FIG. 2 shows a method to supply oil from the storing tank (9) under ground at the gas station into the tanks (10) and (11) on vehicles such as car, bus, and truck. Generally there is much oil supply equipment at the gas stations, the closed fuel supply is described for the two oil suppliers (12) and (13) at the station in this example considering that the two cars visit the gas station for fueling. In FIG. 2, as the same as an oil pipe, an air tube is also connected from the upper side of the storing tank of the station through the two oil suppliers finally to an each oil gun. The oil gun (14) is specially designed to seal the contact of the gun to the inlet of the vehicle tank as shown in FIG. 3, which will be described in detail later. One automatic shutoff valve (15) inside the oil supplier closes the both air tube and oil pipe at the same time or the two automatic shutoff valves close the each air tube and oil pipe at the same time, after fueling a preset quantity. The oil in the storing tank is transferred to the each vehicle tank with opening the each valve and consequently the air in each vehicle tank is moved to only the storing tank without any vaporizing oil to the outer air. With reference FIG. 3, the oil gun for sealing the contact to the inlet of vehicle tanks is composed of an air tube (16), an automatic shutoff double valve (17), and a cover (18). The air in the car tank flows through the air tube connected inside of the oil nozzle via the automatic shutoff double valve finally to the outer part of the oil nozzle extension tube of the gun, as oil supplies. The automatic shutoff double valve (17) closes the both air and oil nozzles at the same time when the car tank is full with oil or filled with a preset value. And the cover (18) is for sealing the contact of the oil gun to inlet of the car tanks from the air with a double robber packing (21).

EXAMPLE 2 Referring to FIG. 4, a method of oil supply from a tank (19) of oil car to the storing tank (9) at the stations is illustrated. The air tube is also connected from the upper side of the storing tank of the station to the oil car tank. After connecting the oil tube of oil car to the inlet of the storing tank and the air tube of the storing tank to the outlet of the oil car tank with tight shielding from the air. The oil in the tank of oil cars is transferred to the storing tank at the stations and the air in the storing tank is naturally moved to the tank on oil car without any vaporization of oil into the outer air. The contact of the oil tube to the inlet of the storing tank is sealed by a cover (20) with double rubber packing (21). The extension tube (22) of the oil tube guides the flow of oil into the storing tank.

EXAMPLE 3 With reference to FIG. 5, an oil supply from the large storing tank (23) of oil company to a tank (19) of oil car to is now described. The air tube is also connected from the upper side of the large storing tank of oil company to the oil car tank. After tightly connecting the air tube of the large storing tank of oil company to the outlet of the oil car tank and the oil tube of the large storing tank to the inlet of the oil car tank, the oil in large storing tank of oil company is transferred to the tank of oil car and the air in the tank of oil car is naturally moved to the tank on oil car without any vaporization of oil into the outer air, which result in the saving of oil.

INDUSRIAL APPLICABILITY

With an invention described above, the transition of oil from one tank to another tank is finished without any contact of oil to the outer air. One fueling by a current oil supply equipment at the station makes a leakage of oil into the air, which results in air contamination and is roughly proportional to the transferred quantity of oil at a temperature. The importance of clean environment has been currently increased. There are several oil suppliers in one station, and many stations exist in one country. A large of amount of oil is vaporized in all of world during a year.

According to the invention, it is possible to save the fore-mentioned mount of oil and preventing the air from contamination. The invention has the advantages of a simple structure, low cost, long age, and little need to repair. By means of the disclosed, the oil is transferred to from the a large tank of company through the oil car and the tank of the stations finally to the tank on vehicles such as cars or airplanes. In reverse sequence, the air is moved from the tank on vehicle to the tank of company. The gathered air in the tank of company includes vaporized oil. If this vaporized oil can be extracted entirely with low cost, then it is highly possible to implement the present invention in the future.

Claims

WHAT IS CLAIMED IS:

1. A method for supplying oil from one feeding tank to another receiving tank with an looping air tube and sealing all contacts for returning of the air without vaporizing into the atmosphere and relevant oil delivery systems, comprising: an air tube for looping between both tanks and sealing the contact to the feeding tank; a means for sealing the contact of oil tube to the receiving tank; a film of the feeding tank for preventing reverse flow of air; a closed oil supply from a storing tank at the stations to a tank on vehicles such cars and airplanes; a sealing air tube from the storing tank via oil supply equipment to said oil gun; a double valve of oil supplier for closing and opening said air tube and oil tube at the same time; an inlet of air at upper side of said storing tank at stations for air cycling; a film at said inlet of the said storing tank for preventing reverse flow of air; a sealing oil gun; a cover of said oil gun for sealing the contact of said oil gun to the inlet of the car tank; a separate air tube inside said oil gun from the outer wall of the oil tube extension to said air tube; a double valve inside said oil gun for closing and opening said air tube and oil tube at the same time; a closed oil supply from an oil car to a storing tank at the stations; a sealing air tube from the storing tank to the oil car; a sealing contact of said oil tube to the oil inlet of the storing tank at stations; an outlet of air at upper side of the storing tank at stations for air cycling; an inlet of air at upper side of oil cars for air returning; an extension tube of the oil tube for guiding the flow of oil into the storing tank; a closed oil supply from a large tank of oil company to an oil car; a sealing air tube from the large tank of oil company to the oil car; a sealing contact of the oil tube to the oil inlet of the oil car tank; an outlet of air at upper side of said oil car tank for air cycling; a means of same use of an outlet of air at upper side of said oil cars for an inlet of air; means of the oil transferred from the tank of oil company through the tank of oil car and the storing tank at the gas stations finally to the vehicle tank; means of cycling of the air reverse moved from the tank of vehicles or airplanes through the storing tank of stations and the tank of oil car finally to the tank of oil company with sequence;