CN202244894U

CN202244894U - Oil vapor breathing loss recovery device

Info

Publication number: CN202244894U
Application number: CN 201120295918
Authority: CN
Inventors: 王卫强; 范开峰; 吴明; 马贵阳; 吴玉国; 胡志勇
Original assignee: Liaoning Shihua University
Current assignee: Liaoning Shihua University
Priority date: 2011-08-15
Filing date: 2011-08-15
Publication date: 2012-05-30
Anticipated expiration: 2021-08-15

Abstract

The utility model relates to an oil vapor breathing loss recovery device, which belongs to oil vapor storage and transportation technology. Evaporation loss of oil products in tanks during storage and transportation results in the problems of huge economic loss, environmental pollution, potential safety hazards and the like. The oil vapor breathing loss recovery device comprises an air bag, the air bag is connected with a breathing valve of an oil tank through a hose and forms a closed system with the oil tank, and an overload protection device and an oil recovery opening are arranged on the air bag. When the pressure in the oil tank exceeds the maximum pressure capable of being borne by the breathing valve, oil vapor is breathed out to enter the recovery device so as to be avoided to enter the atmosphere, and when the pressure in the oil tank is lower than the minimum pressure capable of being borne by the breathing valve, oil vapor is breathed in from the air bag. Therefore, the oil vapor breathing loss recovery device and the oil tank form an organic whole, the working principle is reliable and accessible, and oil vapor breathing loss is obviously decreased. By the aid of the oil vapor breathing loss recovery device, economic benefit of enterprises is increased, energy resources are saved, environmental pollution is reduced, and the oil vapor breathing loss recovery device is wide in applicability.

Description

Oil gas breather loss regenerative apparatus

One, technical field

The utility model belongs to the oil gas storaging and transport technology, is specifically related to a kind of fixed-roof oil tank oil gas evaporation loss regenerative apparatus.

Two, background technology

In order to reduce the oil gas evaporation loss; Reduce the pollution of hydrocarbon vapour to environment; From the forties, people have just begun one's study and have explored the measure that reduces the oil gas evaporation loss, and on the basis that deepens constantly evaporation loss mechanism understanding; A series of measures have been developed, such as reducing a jar interior temperature traverse; Improve tank structure, improve the oil tank bearing capacity; Eliminate the gas compartment on the pasta; Collect the technology such as oil vapour of breathing out.Also note simultaneously having taked to improve operative technique, strengthen the consumption reduction measure that maintenance of equipment, rational management oil product etc. improve production control.Oil and products thereof is the compound of multiple hydro-carbon, and light component wherein has very strong volatility.In exploitation, refining, accumulating and the sales process of oil; Owing to receive the restriction of technology and equipment, can some lighter liquid composition vaporize inevitably, escape into atmosphere; Cause expendable loss; This phenomenon is called the evaporation loss of oil product, can bring enormous economic loss, causes problems such as environmental pollution, potential safety hazard.The oil product evaporating loss that the vertical type cylinder shape fixed-roof oil tank of breathing valve is housed can be divided into two types, i.e. breathing loss and big breather loss.During the static oil storage of oil tank, owing to jar in gas compartment temperature and gas concentration change the static loss through standing that the loss that causes is called oil tank round the clock, claim " little breathing " loss of oil tank again.Oil tank is when the oily operation of transmitting-receiving, and liquid level is constantly to change, and this oil loss that causes owing to the electrolyte level variation is called " breathing greatly " loss.

The representative type survey data shows that the accumulated quantity of oil product evaporating loss is very surprising.According to nineteen fifty-five the 4th international petroleum meeting report, in the U.S., be worked into all processes of sale of finished goods from the well site through refining, the quantity of oil loss accounts for 3% of crude output.1975, the investigation of owned enterprise of Soviet Union petro chemical industry portion showed that the oil loss amount in the refinery accounts for 2.47% of crude runs, and wherein 70% of the net loss consumption is the evaporation loss that betides petroleum tank, mediation oil tank and product tank.1980, China began to the mining site crude oil storage from well head the test shows of 11 main oilfield, and mining site oil loss amount accounts for 2% of oil production, wherein betided well, stood, the evaporation loss in storehouse accounts for 32% of overall loss amount.Relevant data shows that the quantity of oil product evaporating loss is appreciable really.If with the overall loss rate is 3% estimation, the oil product that scatters and disappears in atmosphere every year in the whole world has 100,000,000 tons approximately, almost is equivalent to the crude output in 1 year of China.This seems further that for ubiquitous energy shock in the our times scope problem is serious.

Three, summary of the invention

The purpose of the utility model provides a kind of oil gas breather loss regenerative apparatus, reduces the oil gas evaporation loss, improves energy availability.The technical scheme that the utility model adopts is: oil gas breather loss regenerative apparatus comprises an air bag, and air bag is connected with pressure-and-vacuum release valve through sebific duct, constitutes bounded system with oil tank; Pressure overload protection device and receiving port are arranged on air bag.

When the oil tank internal pressure surpassed the upper limit pressure exhalation oil vapour that breathing valve can bear, the oil vapour of exhalation entered into regenerative apparatus, avoids oil vapour to get into atmosphere; And the oil tank internal pressure is when being lower than the threshold pression that breathing valve can bear, inspiration oil vapour from air bag.Like this, the utility model and oil tank form an organic whole, and principle of work reliably is prone to row, has obviously reduced the oil vapour breather loss.

The utility model has reduced the oil gas breather loss when oil product stores in the fixed-roof oil tank effectively, has improved the oil product availability, has increased economic benefit of enterprises, has practiced thrift the energy, has reduced environmental pollution.Have very wide applicability, be adapted at finished oil oil tank, crude oil oil tank and mediation oil tank tank deck and install and use.

Four, description of drawings

Fig. 1 is an oil gas breather loss regenerative apparatus flow scheme; The working process that has shown the utility model; When oil-air pressure in the oil tank surpass breathing valve can bear force value the time, carry out exhalation process, device for recovering oil and gas then is to carry out breathing process; Airbag inflation, oil gas gets into air bag by oil tank through breathing valve; When oil-air pressure in the oil tank was lower than the vacuum pressure value that breathing valve can bear, oil tank carried out breathing process, and device for recovering oil and gas then carries out exhaust process, and air bag shrinks, and oil gas is got back to oil tank by air bag through breathing valve.

Fig. 2 is oil gas breather loss regenerative apparatus planimetric position figure, has expressed the main composition parts and the mutual alignment relation thereof of this device.

Fig. 3 is an oil gas breather loss regenerative apparatus structural representation.

Five, the specific embodiment

Oil gas is breathed regenerative apparatus and is made up of air bag 1, sebific duct 2, pressure pressure overload protection device 4, receiving port 5 and air bag fixed parts etc.

Air bag 1 is to process by having the anti-Japanese solarization of anti-oil gas burn into, Chinese People's Anti-Japanese Military and Political College's compression ring border burn into good toughness, good springiness, new material wear-resisting, electrostatic prevention; Like this; It is of long duration to guarantee that air bag is used, and the safety of usefulness is relieved, can improve the safety of whole device greatly.Receiving port 5 is on a side of air bag 1, to have installed to receive oily parts, and oil vapour condensation post-concentration collection when reaching a certain amount of, can determine whether receiving oily operation in the bottom of air bag through the pressure indicating instrument of receiving port below.Pressure indicating instrument one end leads to atmosphere, and the other end is connected with collection tube, judges whether to receive oily operation through the fluid column difference.In addition, the staff can also climb up tank deck, and lifting does not gently have fixing balloon segment to judge whether to need to receive the oil operation.Receiving oily process leans on the gravity of oil product self to carry out fully; Power need not extraly be provided; Though can not receive the oil product in the pure qi (oxygen) capsule fully like this, can reach the requirement of the oil vapour that reclaims the oil tank evaporation loss fully, do not influence the operation work of whole device.The sebific duct of receiving port causes the suitable position of oil tank downside along the oil tank wall, and suitable position, 1.5 meters left and right sides, sebific duct bottom is provided with switch, opens switch when receiving oily operation, and switch is in the state of pass when receiving oily operation.The personnel that receive oily operation can take drip tank to receive oil.

The enforcement of pressure overload protection device 4 can have two kinds of methods: the one, be directly installed on the side of air bag; But this method can be brought certain difficulty to the manufacturing of airbag apparatus; And because air bag can change along with the variation of oil and gas content; So the fold phenomenon that can take place not stop in the air bag side will form the phenomenon of the crooked air bag that does not stop like this at pressure overload protection device and air bag joint, be unfavorable for the service life of air bag like this.Second method is only to leave a little outlet in the side of air bag, and outlet is connected out by sebific duct, is connected with pressure overload protection device through sebific duct; The manufacturing process of air bag can be many easily like this, can improve manufacturing efficient greatly, and this method of attachment meeting protects air bag to make it that crooked phenomenon of fold not take place in the junction effectively; Can improve the service life of air bag; And,, need repairing or when changing in case problem has appearred in air bag or pressure overload protection device; Can separate individual processing to pressure overload protection device and air bag, only take measures necessary to problematic parts.For example, when air bag appearance damage needs to change, only need change air bag, keep pressure overload protection device, and needn't change whole airbag apparatus, it all is feasible operating from still being economically like this.Therefore second method is adopted in suggestion.Valve can adopt A21F-16C, A21F-25, A21F-40 type PN16～PN40 outside thread to connect spring sealing Low lift safety valve.Can also select the safety valve of other types as required.

Connect through sebific duct 2 between air bag 1 and the breathing valve 3, sebific duct 2 can adopt the fully enclosed bolted connection with being connected with sebific duct 2 and being connected of air bag 1 of breathing valve 3, and bolted connection makes the assembly and disassembly of whole device become and realizes easily.Advise relating to sebific duct in the whole device and this connection mode is all adopted in parts bonded assembly place.Wherein, the material of sebific duct should meet the corrosion of anti-oil gas, the anti-Japanese solarization of Chinese People's Anti-Japanese Military and Political College's compression ring border burn into, good toughness, the requirement that intensity is high.

The air bag fixed parts is between oil tank tank deck and oil tank tank deck guardrail, truss members to be set, and makes air bag be fixed on the oil tank top, and strengths set forth must enough be kept out the local destructive effect that maximum wind speed brought, to guarantee the safety of whole device.

Each parts of oil gas evaporation loss regenerative apparatus all are to carry out stack-mounted at the scene, and air bag 1 annular in oil tank tank deck guardrail is installed, and is fixed by the air bag fixed parts; The two ends branch of air bag 1 is in the both sides of oil tank staircase inlet 6, air bag 1 one end setting pressure overload protection devices 4, and the other end is installed receiving port 5; In air bag 1 outside protecting sleeve is arranged.The order of connection of whole device is, connects a sebific duct from breathing valve, and sebific duct is connected with air bag again.Two sides of air bag connect two sebific ducts respectively, and a sebific duct is connected with pressure overload protection device, and another is a receiving port, and the receiving port direct connection goes out sebific duct and receives oily operation.The caliber of receiving port can be in 2～5cm scope, and the caliber that connects breathing valve and air bag can be in 0.5～3cm scope, and the caliber that connects pressure overload protection device and air bag can be in 0.5～2cm scope.

Claims

1. oil gas breather loss regenerative apparatus, it is characterized in that: it comprises an air bag (1), air bag (1) is connected with pressure-and-vacuum release valve (3) through sebific duct (2), with oil tank formation bounded system; Overload protection device (4) and receiving port (5) are arranged on air bag (1).

2. oil gas breather loss regenerative apparatus according to claim 1 is characterized in that: air bag (1) annular in oil tank tank deck guardrail is installed, and is fixed by the air bag fixed parts; The two ends branch of air bag (1) is in the both sides of oil tank staircase inlet (6), and air bag (1) one end is installed overload protection device (4), and the other end is installed receiving port (5); In air bag (1) outside protecting sleeve is arranged.