CN104211008A - Oil gas recovery type fueling gun - Google Patents

Abstract

The invention relates to an oil gas recovery type fueling gun, which comprises a gun body, a main valve, an auxiliary valve, a condensation chamber, a condenser, a butt assembly and a self-sealing control assembly. The oil gas recovery type fueling gun has the following characteristics: the condenser, which adopts semiconductors for refrigeration, comprises a power supply chamber, a hot end, the N-type semiconductor, a condensation chamber, a cold end, the P-type semiconductor, a condensate return hole and an oil gas suction hole; the auxiliary valve comprises a spring, an oil discharge hole, an auxiliary spool and an auxiliary valve seat, the oil gas suction hole is located on the tip of an adapter sleeve and the outer wall of a nozzle, and the condensate return hole is located on the outer wall of the front part of the horizontal section of the nozzle. The oil gas recovery type fueling gun adopts the semiconductors for refrigeration and condensation for dissipating oil gas to achieve the goal of fuel gas recovery, rather than oil gas flowing back into an underground storage tank via a recovery pipeline; an oil gas recovery device is located on the upper left part of the gun body, so that the goal of sufficiently utilizing the space of the gun body is achieved; the oil gas recovery type fueling gun has the advantages of simple and compact structure, safe and reliable performance, high oil gas recovery efficiency and the like.

Description

A kind of oil gas reclaiming type nozzle

Technical field

The present invention relates to a kind of oil gas reclaiming type nozzle, particularly a kind ofly adopt semiconductor refrigerating and reach the nozzle that oil gas reclaims object.

Background technology

In the application, related oil gas refers to Exhaust Gas in fuel tank in fuel tank refueling process and oil product is volatilized and the compound of formation.

At present, what petrol service station was used is mostly common self-sealing nozzle, this nozzle by rifle body, main valve, switch membrane, push rod, secondary valve, self-styled bar, form from basic structures such as control lever and rifle mouths, has the function of automatically blocking oil circuit after the full oil of fuel tank in refueling process.Its auxiliary-seat along the circumferential direction has aperture, by the inclined hole on rifle body, communicate with switch membrane upper cavity, on reducing sleeve, have a hole, by induction opening, air inlet pipe and exterior, inclined hole communicates with switch membrane upper cavity by the upper left inclined hole of rifle body, and switch membrane lower chamber communicates with the external world by the gap from control lever; Three steel balls are housed in three holes, control lever upper end, and the effect of secondary valve is to prevent that main valve from closing between the major and minor valve of rear lance the outflow of the fluid in cavity.

During fuel feeding, lift spanner, main valve is opened, and pressure oil enters in rifle body cavity between major and minor valve, and overcomes spring force and push secondary valve open, through rifle mouth, discharges; When fluid floods admission piece, cut-off diaphragm upper cavity is hedged off from the outer world and has formed negative pressure, switch membrane both sides have produced pressure reduction, when pressure reduction reaches certain value, self-styled bar overcomes cut-off diaphragm upper cavity spring force and moves up under the promotion of switch membrane, and steel ball is squeezed to be fallen in control lever, from control lever, under the effect of spanner pulling force, move down, push rod moves down because spanner fulcrum moves down, and main valve is closed, stop control lever.

But during this nozzle work, the gas of discharging in oil product volatilization and fuel tank will be dispersed in atmosphere, not only cause oil and gas loss, increase petrol service station fire hazard; Meanwhile, also environment has been produced to pollution.

Summary of the invention

The present invention, mainly for above problem, provides a kind of semiconductor refrigerating that adopted, and condensation loss oil gas reaches oil gas and reclaims object, and needn't be back to buried tank by recovery line; Device for recovering oil and gas is positioned at rifle body upper left quarter, has reached and has made full use of rifle body space object, has the oil gun of the reliable and oil gas organic efficiency advantages of higher of simple and compact for structure, performance safety, and its technical scheme is as follows:

A kind of oil gas reclaiming type nozzle comprises: rifle body, main valve, secondary valve, condensation chamber, condensing plant, gun stock assembly and self-styled control assembly, rifle body global formation inner chamber hollow sealing, main valve, secondary valve, condensation chamber, condensing plant and self-styled control assembly are all inlayed and rifle intracoelomic cavity, gun stock is connected with rifle body bottom by de-mode of tearing connection open, it is characterized in that: condensing plant adopts semiconductor refrigerating, comprise power supply room (22), hot junction (23), N-type semiconductor (24), condensation chamber (25), cold junction (26), P-type semiconductor (27), condensing reflux hole (28), oil gas sucking hole (29), secondary valve comprises spring (20), outage (19), auxiliary valve core (21), auxiliary-seat (11), oil gas sucking hole (29) is positioned at reducing sleeve (17) top, rifle mouth (14) outside wall surface, and condensing reflux hole (28) are positioned at the anterior outside wall surface of rifle mouth horizontal segment.

On technique scheme basis, described condensing plant comprises: hot junction (23), cold junction (26), N-type semiconductor (24), P-type semiconductor (27), condensing plant cold junction (26) lower wall surface, reducing sleeve (17) inner chamber and rifle mouth (14) outside wall surface form condensation chamber (25).

On such scheme basis, left and right, described hot junction (23) wall matches with reducing sleeve (17), upper wall surface is placed in the external world, device hot junction (23), cold junction (26) all adopt polylith solid-state chip to be in series, auxiliary valve core (21) is inverted T-shaped structure, and the outage (19) that adopts auxiliary-seat (11) two ends, left and right to open carries out oil extraction.

The beneficial effect that the present invention produces has: adopted semiconductor refrigerating, condensation loss oil gas, reaches oil gas and reclaim object, and needn't be back to buried tank by recovery line; Device for recovering oil and gas is positioned at rifle body upper left quarter, has reached and has made full use of rifle body space object, has the reliable and oil gas organic efficiency advantages of higher of simple and compact for structure, performance safety.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Nomenclature:

1. oil inlet; 2. press female; 3. push rod; 4-spring; 5. gland; 6. main valve; 7. upper cover; 8. switch membrane; 9. self-styled bar; 10. steel ball; 11. auxiliary-seats; 12. admission pieces; 13. air inlet pipes; 14. rifle mouths; 15. recovery holes; 16. seal closures; 17. reducing sleeves; 18. seal rings; 19. outages; 20. springs; 21. auxiliary valve cores; 22. power supply rooms; 23. hot junctions; 24.N type quartz conductor; 25. condensation chambers; 26. cold junctions; 27.P type quartz conductor; 28. condensing reflux holes; 29. oil gas sucking holes; 30. from control lever; 31. seal cover caps; 32. catch; 33. positioning plates; 34. spanners.

The specific embodiment

Below in conjunction with accompanying drawing and example, the invention will be further described:

As shown in Figure 1, a kind of oil gas reclaiming type nozzle comprises: rifle body, main valve, secondary valve, condensation chamber, condensing plant, gun stock assembly and self-styled control assembly, rifle body global formation inner chamber hollow sealing, main valve, secondary valve, condensation chamber, condensing plant and self-styled control assembly are all inlayed and rifle intracoelomic cavity, gun stock is connected with rifle body bottom by de-mode of tearing connection open, it is characterized in that: condensing plant adopts semiconductor refrigerating, comprise power supply room (22), hot junction (23), N-type semiconductor (24), condensation chamber (25), cold junction (26), P-type semiconductor (27), condensing reflux hole (28), oil gas sucking hole (29), secondary valve comprises spring (20), outage (19), auxiliary valve core (21), auxiliary-seat (11), oil gas sucking hole (29) is positioned at reducing sleeve (17) top, rifle mouth (14) outside wall surface, condensing reflux hole (28) is positioned at the anterior outside wall surface of rifle mouth horizontal segment, device hot junction (23), cold junction (26) all adopts polylith solid-state chip to be in series, auxiliary valve core (21) is inverted T-shaped structure, and the outage (19) that adopts auxiliary-seat (11) two ends, left and right to open carries out oil extraction, coaxial hose is connected with nozzle oil inlet 1, rifle mouth stretches in the filler port of fuel tank and makes seal closure 16 good with the laminating of fuel tank outside wall surface.During fuel feeding, lift spanner 34 to predetermined amount of flow gear place, at this moment main valve push rod 3 is opened main valve 6 passages under the drive of spanner 34 liftings, pressure oil enters between main valve 6 and auxiliary-seat 11 in cavity, under the effect of pressure, fluid backs down auxiliary valve core 21, enters into gun adapter, and then enter in fuel tank by Fu Fa 21 inner cavity chamber's left and right outages that two ends have.Opening power chamber switch now, condensing plant is started working, because fluid enters in fuel tank, pressure is increased, at this moment, in fuel tank, original gas mixture, under the effect of inside and outside differential pressure, enters into condensation chamber through recovery holes 15, after the condensation of a period of time, the gas mixture of gaseous state changes liquid state into and assembles in condensation chamber, and through condensing reflux hole, 28 discharges enter fuel tank, complete oil gas removal process.

When fuel feeding to fuel tank inner fluid face floods after admission piece 12, now, switch membrane 8 upper cavities are hedged off from the outer world, and form negative pressure in switch membrane 8 upper cavities, and switch membrane 8 lower chambers are owing to communicating with the gap from control lever 30, so force value is fixed as barometric pressure.Rising along with fuel tank inner fluid face, this negative pressure value increases accordingly, when negative pressure value increases to certain value, now under the upper and lower cavity differential pressure action of switch membrane 8, self-styled bar overcomes spring 4 effects and moves up, because self-styled bar and push rod have formed piston crank mechanism by the baffle plate below spanner, self-styled bar rises and has driven push rod 3 to move down, thereby close main valve 6, block asphalt channel, fuel feeding process stops.

In semiconductor refrigerating process, cold junction (26) can not contact with gas mixture, therefore, adopts cold junction (26) and cold of storage to be fixedly connected, and utilizes cold of storage to carry out cold transmission; Hot junction, because upper wall surface and atmosphere communicate, utilizes the mode of air cooling to reduce hot-side temperature, reaches the object of strengthening semiconductor refrigerating effect.

Preferably, described condensing plant comprises: hot junction (23), cold junction (26), N-type semiconductor (24), P-type semiconductor (27), condensing plant cold junction (26) lower wall surface, reducing sleeve (17) inner chamber and rifle mouth (14) outside wall surface form condensation chamber (25).

Preferably, left and right, described hot junction (23) wall matches with reducing sleeve (17), upper wall surface is placed in the external world, device hot junction (23), cold junction (26) all adopt polylith solid-state chip to be in series, auxiliary valve core (21) is inverted T-shaped structure, and the outage (19) that adopts auxiliary-seat (11) two ends, left and right to open carries out oil extraction.

The present invention has adopted semiconductor refrigerating, and condensation loss oil gas reaches oil gas and reclaims object, and needn't be back to buried tank by recovery line; Device for recovering oil and gas is positioned at rifle body upper left quarter, has reached and has made full use of rifle body space object, has the reliable and oil gas organic efficiency advantages of higher of simple and compact for structure, performance safety.

With way of example, describe the present invention above, but the invention is not restricted to above-mentioned specific embodiment, all any changes of doing based on the present invention or modification all belong to the scope of protection of present invention.

Claims (3)

1. an oil gas reclaiming type nozzle comprises: rifle body, main valve, secondary valve, condensation chamber, condensing plant, gun stock assembly and self-styled control assembly, rifle body global formation inner chamber hollow sealing, main valve, secondary valve, condensation chamber, condensing plant and self-styled control assembly are all inlayed and rifle intracoelomic cavity, gun stock is connected with rifle body bottom by de-mode of tearing connection open, it is characterized in that: condensing plant adopts semiconductor refrigerating, comprise power supply room (22), hot junction (23), N-type semiconductor (24), condensation chamber (25), cold junction (26), P-type semiconductor (27), condensing reflux hole (28), oil gas sucking hole (29), secondary valve comprises spring (20), outage (19), auxiliary valve core (21), auxiliary-seat (11), oil gas sucking hole (29) is positioned at reducing sleeve (17) top, rifle mouth (14) outside wall surface, and condensing reflux hole (28) are positioned at the anterior outside wall surface of rifle mouth horizontal segment.

2. a kind of oil gas reclaiming type nozzle according to claim 1, it is characterized in that: described hot junction (23), cold junction (26), N-type semiconductor (24), P-type semiconductor (27), condensing plant cold junction (26) lower wall surface, reducing sleeve (17) inner chamber and rifle mouth (14) outside wall surface form condensation chamber (25).

3. according to looking for a kind of oil gas reclaiming type nozzle described in claim 1 or 2, it is characterized in that: left and right, described hot junction (23) wall matches with reducing sleeve (17), upper wall surface is placed in the external world, device hot junction (23), cold junction (26) all adopt polylith solid-state chip to be in series, auxiliary valve core (21) is inverted T-shaped structure, and the outage (19) that adopts auxiliary-seat (11) two ends, left and right to open carries out oil extraction.