CN2577067Y - Anti-leak energy-saving pressure-reducing valve - Google Patents

Abstract

The utility model relates to a pressure-reducing valve with the functions of gas leakage prevention and energy saving, which belongs to the field of a household pressure reducing valve. The inside of an air chamber of an ordinary pressure reducing valve is provided with a leather diaphragm frame (1) and a small leather diaphragm (4), and one original air chamber is divided into a small air chamber (2) and an air chamber (10); the small air chamber is communicated with the atmosphere, and the are fully sealed. When the utility model in normal operation, the small leather diaphragm can be fluctuated along with a leather diaphragm; when the leather diaphragm is ruptured, and the gas leakage or the chronic gas leakage occurs, gas leaked in the air can press and push the small leather diaphragm onto a valve casing (15) and a breathing hole (3) and can be blocked from expanding outsides, and the gas leaked in the air can only stay in the air chamber and a pressure regulating pipe (7) and can not be leaked into the atmosphere; the purposes of gas leakage prevention and energy saving can be achieved thereby.

Description

Anti-gas-leak energy-saving pressure-reduction valve

A kind of anti-gas-leak energy-saving pressure-reduction valve belongs to family expenses reduction valve field.

Before the utility model, the reduction valve of using on the promptly existing liquefied petroleum ga steel cylinder that passes through is by suction tude, handwheel, piston, lever, epithelium, platen, double-screw bolt, surge pipe, spiracle, lid, spring, valve casing, compositions such as steam outlet pipe, because this kind reduction valve in use, because the one side of epithelium contacts with liquefied petroleum gas always, gas corrosion for a long time continuously is liquefied, and, epithelium in fuel chamber's one side also has higher gaseous-pressure, and at air chamber epithelium simultaneously, because air chamber and atmosphere are straight-through, so there is not pressure, add epithelium when being installed on the valve casing, epithelium between valve casing and the platen has two 90 complications about degree, and the nut when part such as lever is installed is pressed and is hit on epithelium, so, epithelium on this kind reduction valve, not only corroded by the oil gasification for a long time always, and when work, the constantly flexible tortuous collision of fluctuation up and down, and also there is higher gaseous-pressure to impact, expand, so, a lot of epitheliums in use for some time, can break and produce the finedraw crack, dit, after epithelium breaks, combustion gas in the fuel chamber (combustion gas in the steel cylinder just), can be by the rent of epithelium, flow in the air chamber rapidly, and air chamber is straight-through by spiracle and atmosphere, like this, flow into the combustion gas in the air chamber, can flow in the atmosphere by spiracle, form a large amount of rapidly gas leakage, because because after epithelium breaks, whole reduction valve does not play decompression to combustion gas, like this through the epithelium rent, the combustion gas that spiracle drains in the atmosphere is the high-pressure gas that does not pass through decompression, flow velocity, flow is all very anxious big, out of breath when cooking food more than normal gas cooker, flow is big, after a large amount of like this combustion gas flow between the kitchen, reach coal briquette stove and the electric switch that is using as naked light, open, electrical spark when closing, smoking etc., all will cause blast, detonation causes a serious accident, and the elderly is quick because of having a bad nose, the late pure or child of reaction is ignorant of knowledge at the indoor gas cooker of opening when a large amount of combustion gas is arranged in the same old way, great misfortune is caused in the capital, also have some, because of the long-term chronic leakage of reduction valve, to being arranged, the combustion gas stink benumbs again, think that it doesn't matter, treat that chronic leakage becomes quick gas leakage, do not discover, sparking is used in the same old way, burn the coal briquette stove, so also all can cause great misfortune, the significant explosion that in using liquefied petroleum gas stove, causes, in the deflagration accident having, great majority are that gas leakage caused after the epithelium by this reduction valve broke, and the misfortune feelings are all very big.Also have some epitheliums in long-term the use or before breaking, can form the finedraw crack, chronic leakages such as dit, this chronic leakage passes through air chamber, spiracle flow in the atmosphere between the kitchen, some has more stink, some has only trickle stink, and some can't smell stink, and these gas leakage can not cause blast, serious accidents such as detonation, waste a lot of combustion gas so cause long-term chronic leakage, the people that some is careful is after smelling an offensive odor, because gas cooker uses well in the same old way, after so gas cooker makes and makes good use of, can fall the valve closing on the steel cylinder, but when burning food, open valve again, at this moment combustion gas is that old in the same old way spilling come, cause the combustion gas waste, also have a lot of people, in use, valve on the steel cylinder is not closed for a long time always, like this, continuously gas leakage always for a long time of chronic leakage causes combustion gas to waste in a large number, above-mentioned several chronic leakage, though can not cause a serious accident, in long-term gas leakage, can cause a large amount of wastes of combustion gas and safety is caused major hidden danger.

The purpose of this utility model just is to overcome above-mentioned deficiency, thereby the epithelium that a kind of pressure loading valve is provided breaks after the gas leakage, or after the chronic leakage of dit etc. is arranged, spill in the atmosphere of the combustion gas that comes in can not flowing between the kitchen, prevent to leak gas and energy-conservationly be a kind of anti-gas-leak energy-saving pressure-reduction valve of purpose thereby reach.

The purpose of this utility model was achieved in that promptly before the utility model, in the air chamber of the existing common reduction valve that passes through, epithelium frame (1) and little epithelium (4) have been installed exactly, make an air chamber originally be divided into a minor air cell (2) and an air chamber (10) now, minor air cell (2) communicates with atmosphere by spiracle (3), air chamber (10) but can not pass through little epithelium, spiracle communicates with atmosphere, a seal ring has been installed on the upper end-hole of surge pipe in addition, gas in surge pipe and the air chamber can not be gone from leaking into the atmosphere here, make air chamber (10) and surge pipe (7) externally hermetically sealed, air chamber (10) leads to by the screw slit and the surge pipe (7) of double-screw bolt (8), when the utility model proper functioning, epithelium (12) is fluctuation up and down, little epithelium (4) is with epithelium (12) fluctuation up and down synchronously simultaneously, air in the minor air cell (2), fluctuation up and down along with little epithelium, be forced out a minor air cell (2) by spiracle (3), air in the atmosphere is sucked in the minor air cell (2) more immediately, the interior air of minor air cell (2) is forced out a little more immediately again, go round and begin again like this, reached the gas pressure equilibrium of forces of steam outlet pipe (13) output.When the utility model breaks down, just work as epithelium of the present utility model (12) dit is arranged, the finedraw crack, slowly during property gas leakage, and epithelium (12) is when breaking big gas leakage or bigger gas leakage, the combustion gas in the chamber (14) is decided in combustion gas, the combustion gas in the steel cylinder just, can bleed to air chamber (10) from the breach and the dit place of epithelium (12), in the surge pipe (7), air chamber, air pressure in the surge pipe promptly increases, the air pressure that increases promptly is pressed to little epithelium (4) and valve casing (15), spiracle (3) is collided tightly, and, air in the minor air cell (2), shifted onto (being in the air in the kitchen) in the atmosphere by little epithelium (4) pressure, air in the minor air cell (2) flow in the atmosphere by spiracle, and by chance press on the spiracle (3) at the abundant place (19) on the little epithelium (4), because the film at abundant place is firmly abundant, with since spiracle very tiny, so the high-pressure gas in the air chamber (10) can not crush abundant place (19), because little epithelium has been shifted onto with valve casing by pressure and has been bumped tightly, so little epithelium just can not be again surface expansion outward, because air chamber (10), surge pipe (7) is hermetic, air chamber (10) just, surge pipe (7) does not communicate with atmosphere, so rent and dit from epithelium (12), finedraw crack place leaks into that combustion gas in air chamber (10) and the surge pipe (7) can only rest on air chamber (10) and surge pipe (7) is interior, has gone and can not leak in the atmosphere in the kitchen again.Owing to combustion gas that spills from the epithelium rent and the chronic combustion gas that spills from the dit of epithelium, can only rest in the air chamber and surge pipe in, and can not bleed in atmosphere by spiracle and pressure regulation mouth of pipe place again, prevent the purpose of leaking gas thereby reached, (in the utility model file, " thereby reached prevent leak gas purpose " mainly refers to " having reached the purpose of going in the atmosphere of the combustion gas that prevents in the reduction valve in draining between the kitchen "), because dit from epithelium, the combustion gas that slow property spills in the finedraw crack also can only stop, accumulate in air chamber and surge pipe, go in the atmosphere and can not drain to, thereby stoped combustion gas from dit finedraw crack midium or long term chronic leakage to atmosphere, cause the phenomenon of combustion gas waste, thereby reached purpose of energy saving.Just now since epithelium to air chamber, gas leakage in the surge pipe, make air chamber, the surge pipe internal pressure increases, promptly little epithelium (4) is pressed than highpressure in the air chamber shifted onto and valve casing, spiracle is bumped tightly, after spiracle is pressed obstruction to live by the abundant place (19) on the little epithelium (4), when if the user re-uses gas cooker, the meeting appearance point is missing of ignition, can hear simultaneously z z z the phenomenon such as sound of giving vent to anger of ringing, may to be that reduction valve has leaked gas bad owing to write exactly when this kind phenomenon occurring on reduction valve or on the operating instruction of reduction valve, the explanation that needs repairing or buy new product, when so user one finds this kind phenomenon, just can know it to be that reduction valve has leaked and bent out of shape and stopped using gas cooker, go to keep in repair or buy new reduction valve, thereby after having reached decompression gas leakage, can make the user know the purpose that reduction valve has leaked gas bad.

Now further specify with example and realize detailed process of the present utility model: combustion gas enters fuel chamber of the present utility model (14) in steel cylinder when the valve open on the steel cylinder, have than the combustion gas of strong pressure and immediately epithelium (12) and the platen (11) that tightly is associated in epithelium are up pushed up a bit of distance, spring (9) also be compacted little by little, air in the air chamber (10) also is more compacted, but the pressurized air in the air chamber (10) was also pressed point to little epithelium (4) toward spiracle (3) direction immediately, little epithelium (4) is promptly extruding a little in the atmosphere of the air in the minor air cell (2) outside the spiracle (3), at this moment the air in the air chamber (10) can not flow in the atmosphere by surge pipe (a 7) mouthful place and go, because the there has lid (5) that seal ring (6) screwing hermetic, and, air in the air chamber (10) can not flow to from other place and go the atmosphere, because air chamber and surge pipe are hermetic to locating, at epithelium (12) just now, and platen (11) by the combustion gas in the fuel chamber (14) up top the preceding paragraph apart from the time, also promptly the right-hand member of lever (16) is up spurred a bit of distance, piston (17) is under the effect of lever (16), promptly inlet hole (20) is stopped up, combustion gas in the steel cylinder can not be entered in the fuel chamber (14) by inlet hole again, when gas combustion range ignition, combustion gas in the fuel chamber (14) just enters into gas cooker from steam outlet pipe (13), gaseous-pressure in the fuel chamber (14) is just little, under the elastic force effect of spring (9), chassis (11), just down depress a bit of distance with epithelium (12), air in the air chamber (10) is just rarer, under the atmospheric outside effect, air in the atmosphere is just by in spiracle (3) the inlet point minor air cell (2), and inward little epithelium (4), promptly move bullet in the air chamber (10) and cross a little, meanwhile down depressed the platen (11) of a little just now, epithelium (12) is also down depressed a little to lever (16), under the effect of lever, piston (17) promptly leaves inlet hole (20) little by little, high-pressure gas in the steel cylinder just enters into fuel chamber (14) immediately, gaseous-pressure in the fuel chamber (14) just increases immediately, platen (11), epithelium (12) up pushes up point, the just compacted point of air in the air chamber (10), the also compacted point of spring (9), pressurized air in the air chamber (10) was just pressed point to little epithelium (4) toward spiracle (3) direction, air in the minor air cell (2) just flows out point in atmosphere by spiracle (3), along with this a series of actions, lever (16) moves past piston a little toward the inlet hole direction again, inlet hole (20) is stopped up, make the combustion gas in the steel cylinder can not enter fuel chamber (14), but gas cooker is in burning, combustion gas in the fuel chamber (14) flow on the gas cooker by steam outlet pipe (13), gaseous-pressure in the fuel chamber (14) is low again like this, under the effect of spring (9), platen (11), epithelium (12) is down depressed a little again, make piston leave an inlet hole (20) again, make the combustion gas in the steel cylinder enter in the fuel chamber once more, so going round and beginning again makes the combustion gas of steam outlet pipe (13) output reach balance, and the utility model is normally moved.Epithelium (12) is in combustion gas for a long time continuously under the corrosive action and be low pressure in the air chamber, in the fuel chamber be high pressure cross action down and epithelium under long-term flexible repeatedly tortuous acting on, particularly at the intersection of platen (11) with epithelium (12), the intersection of epithelium (12) and valve casing (15), nearly 90 ° complications are arranged, epithelium (12) can occur aging, dit, gas leak phenomenon such as break in the finedraw crack, at this moment the combustion gas meeting in the fuel chamber (14) is by the epithelium rent, dit, bleed in air chamber (10) in the finedraw crack, and the air pressure in the air chamber is raise, because the rising of air chamber (10) internal air pressure, forcing little epithelium (4) to expand to spiracle (3) direction moves, and little epithelium (4) is pressed tightly on spiracle (3) and on the valve casing (15), and, abundant place (19) in the middle of the little epithelium (4) by chance is close on the spiracle (3), because place, spiracle center is very abundant, the aperture of adding spiracle (3) is very little, so even the gas pressure intensity in the air chamber (10) is higher, but be close to the gas leakage of also can not breaking of abundant place (19) on the spiracle, little epithelium (4) is blocked in combustion gas in the air chamber (10), in the surge pipe (7), gone in the atmosphere and can not drain to by spiracle again, and, because the place has added seal ring (6) at the adjusting mouth of pipe, make air chamber, combustion gas in the surge pipe can not drain in the atmosphere at pressure regulation mouth of pipe place has gone, thereby having been reached, the utility model prevents gas leakage and purpose of safety, owing to the dit from epithelium (12), the finedraw crack is located slow property and is spilt next gas, also can only accumulate in the air chamber (10) and surge pipe (7) in, gone in the atmosphere and can not drain to, thereby reached purpose of energy saving, when epithelium (12) breaks gas leakage fast and chronic leakage, force little epithelium (4) to abut against that valve casing (15) is gone up and spiracle (3) on the time, will appearance point missing of ignition or difficult point is fiery, and with anxious z z z the sound of giving vent to anger, when catching fire as point, fire is very prosperous, because on valve, leak gas with above-mentioned words and expressions and valve on the specification, words and expressions such as change, the user knows that just reduction valve leaks gas, keep in repair, more renewed reduction valve.And, because little epithelium when proper functioning, does not contact with liquid gas, gas corrosion is not liquefied, not impacted by the high pressure liquid gasification, do not have to turn by force about 90 ° and go up frequent tortuous stretching, and do not have nut and the collision of cuticle film etc., so, little epithelium (4) is compared with epithelium (12), and little epithelium is much more durable than epithelium (12), and the working life of little epithelium is more much longer than epithelium (12), in sum, thus the utility model has been reached prevent gas leakage and purpose of energy saving.

Advantage of the present utility model is: realized that the interior epithelium of reduction valve is after the gas leakage of breaking, or behind the epithelium chronic leakage, the combustion gas that leaks out can not leak in the atmosphere, thereby avoided effectively significant explosion, deflagration accident having generation advantage and reached the advantage of energy-conservation purpose effectively.

Below in conjunction with drawings and Examples the utility model is further described.

Accompanying drawing is a sectional structure chart of the present utility model.

In the accompanying drawings: 1. epithelium frame 2. minor air cells 3. spiracles 4. cuticle films 5. cover 6. seal rings, 7. surge pipes, 8. double-screw bolts, 9. springs, 10. air chambers, 11. platens, 12. epitheliums, 13. steam outlet pipes, 14. fuel chamber, 15. valve casings, 16. levers, 17. pistons, 18. suction tude, 19. abundant places, 20. inlet holes

In the accompanying drawings: epithelium frame (1) is in valve casing (15) the inside, and it is round what make a circle in spiracle (3) week, or it is square, the wall of rectangular protrusion shape, the one side of this wall is tightly connected with valve casing (15), another side and little epithelium (4) are tightly connected, it mainly works to allow mounted thereto of little epithelium (4), and and valve casing (15), spiracle (3), little epithelium (4) forms the effect of minor air cell jointly and makes spiracle (3) and the intermembranous effect that a segment distance is arranged of flat shape cuticle, it is made by metal or nonmetallic material, if, little epithelium is bowl-shape, also can cancel this epithelium frame, and by a circle limit of the little epithelium of bowl-shape shape replace (as) this epithelium frame.Minor air cell (2) is in spiracle (3), valve casing (15), epithelium frame (1) the inside, space above the little epithelium (4), minor air cell (2) is by epithelium frame (1), spiracle (3), little epithelium (4), an a part of common space of forming of valve casing (15), all air in this minor air cell, be communicated with atmosphere by spiracle (3), it also abuts against the next door of air chamber (10), between minor air cell (2) and the air chamber (10) is seal isolation, and in platen (11), above the epithelium (12), and with platen (11), epithelium (12) is far opened a bit, it mainly works to deposit air, with the effect that forms a space, the effect that can allow little epithelium (4) fluctuate up and down, when little epithelium fluctuateed up and down, the air in the minor air cell can free in and out by spiracle (3).Spiracle (3) is one or several aperture that flocks together that bores on valve casing, spiracle (3) and on minor air cell (2), also be positioned at the right opposite of little epithelium (4), abundant place (19), it mainly play a part to allow air in the minor air cell free in and out and can allow effect that abundant place (19) covers and with effect that forms minor air cells (2) of other parts.Little epithelium (4) is a circle, or it is square, or the plane epithelium of rectangular shape, or it is middle slightly toward one side protrusion or recessed plane epithelium, or the round film of a bowl shape, epithelium is made with top-quality rubber, flexible, a thicker abundant place (19) is arranged in the middle of the cuticle film, abundant place (19) is the component part of little epithelium (4), plane little epithelium (4) is installed on the epithelium frame (1), the little epithelium of bowl shape can be directly installed on the inner wall of valve casing (15), so (, epithelium frame (1) can be set with the little epithelium of bowl shape), the little epithelium of bowl shape (4) also can be installed on the epithelium frame (1).Little epithelium (4) is positioned at the inside of valve casing (15), the opposite of spiracle, little epithelium (4) is the intersection of minor air cell (2) and air chamber (10), above the little epithelium (4) minor air cell (2), be air chamber (10) below, little epithelium (4) and spiracle (3), the span of valve casing (15) is: when the utility model proper functioning, just do not leak under the situation of combustion gas at epithelium (12), little epithelium (4) is when making up and down surge movement, little epithelium not with spiracle (3), the inner wall of valve casing (15) touches, but with spiracle (3), the inwall of valve casing (15) is also more approaching, so that with when epithelium (12) leaks, expanding gas in the air chamber (10) can make little epithelium (4) be close on the inner wall that stays in valve casing (15) soon, and on the spiracle (3), the middle abundant place (19) of little epithelium (4) is close to be stayed on the spiracle (3), the main effect of little epithelium (4) is: and other component are formed the effect of minor air cell (2) and air chamber (10) together, and between minor air cell (2) and air chamber (10) as the effect of one deck separation layer, and rise when the utility model during in proper functioning, little epithelium (4) can be along with epithelium (12) fluctuation up and down synchronously simultaneously, when fluctuation, the air in the minor air cell (2) is extruded by spiracle (3), the effect of inspiration, and also rise when epithelium (12) leaks, when just the gas leakage in the fuel chamber (14) is to air chamber (10), the gas that expands in the air chamber (10) can be pressed on little epithelium (4) on valve casing (15) inner wall and on the spiracle (3), spiracle (3) is stopped up, make the combustion gas in the air chamber (10) can not pass through little epithelium (4), spiracle (3) enters into the effect that atmosphere goes.Lid (5) be positioned at seal ring (6) top and around, it is made by metallic material, it mainly play a part to be tightened on the pressure regulation mouth of pipe and and seal ring seal the pressure regulation mouth of pipe jointly.Seal ring (6) is positioned on the mouth of surge pipe (7), and the lid (5) below, it can be by the seal ring made from rubber or other material, seal ring (6) also can be made one with lid (5), just lid is made and had seal action, also can be on the mouth of surge pipe (7) with the glue material coated, seal, it mainly rises and covers and seals surge pipe (7) mouth together jointly, makes the gas in surge pipe (7), the air chamber (10) not leak into the effect of going in the atmosphere from the pressure regulation mouth of pipe.Surge pipe (7) is an empty pipe that is connected above the valve casing (15), in the middle of it double-screw bolt (8), spring (9) is arranged, and it is made by the metallic material the same with valve casing, and it mainly supplies double-screw bolt (8) to screw in its pipe, screw off to regulate the effect of gaseous-pressure.Double-screw bolt (8) is positioned at surge pipe (7), spring (9) go up and seal ring (6) below, it is made of plastics, it mainly plays a part to screw in surge pipe (7), screw off and make spring relaxation, compress.The upper end of spring (9) be positioned at double-screw bolt (8) below, the lower end is pressed on the platen (11) and is positioned at air chamber (10), it is made by metallic material, it mainly plays spring, just platen (11), epithelium are compressed a little at double-screw bolt (8) when the backspin, double-screw bolt (8) makes platen (11), epithelium (12) loosen effect a little when up revolving.Air chamber (10) is positioned at above the epithelium (12), in the valve casing (15), below the little epithelium (4), and below the double-screw bolt (8), partly in the surge pipe, spring (9) and air and platen (11) are arranged in the middle of it, when the utility model just often, gas in the air chamber is air, when epithelium (12) leaks, its the inside promptly charges into high-pressure gas, air chamber (10) is on the next door of minor air cell (2), and air chamber (10) is a seal isolation with minor air cell (2), and air chamber (10) is on fuel chamber (14), be seal isolation between air chamber and the fuel chamber, it mainly works to be full of air transition, when epithelium leaks gas, deposits combustion gas, and little epithelium (4) is pressed onto effect on the valve casing.

Platen (11) is positioned at epithelium (12) and goes up and be close on the epithelium (12); and be positioned at air chamber (10); tightly suppressed by the lower end of spring (9) in the middle of it; it mainly rises and epithelium (12) and drive lever (16) synchronization fluctuate; and the effect of protection epithelium, it is a disk made from metallic material.Epithelium (12) is a round film that rubber is made that is positioned between air chamber (10), the fuel chamber (14), be adjacent to together with platen (11) above it, above it air chamber (10), be fuel chamber (14) below, limit around it is fixed on the valve casing (15), it mainly plays an air chamber (10) and separates sealing with fuel chamber (14), also plays flexible, flexible fluctuation.Steam outlet pipe (13) is positioned at an end of valve casing (15), and join together with valve casing, its end communicates with fuel chamber, the other end communicates with gas cooker by leather hose, it is on the suction tude opposite, and it mainly rises and allows rubber tube be sleeved on its air outlet and allow the combustion gas in the fuel chamber (14) pass through, flow to the effect of rubber tube, it is made with metal.

Fuel chamber (14) be positioned at epithelium (12) below, in the valve casing (15), lever (16) is arranged and be full of combustion gas in the middle of it, its end is connected with suction tude (18), the other end and steam outlet pipe (13) are connected, it mainly rises and allows lever (16) be installed in the firing chamber, and allows effect that lever moves in the firing chamber and make combustion gas in its effect of flowing through.Valve casing (15) is a shell of the present utility model, have above it or spiracle (3) is installed, epithelium frame (1), surge pipe (7), epithelium (12), steam outlet pipe (13), suction tude (18), in valve casing (15), have, little epithelium (4), minor air cell (2), spring (9), air chamber (10), platen (11), epithelium (12), fuel chamber (14), lever (16), it mainly plays a part to allow component assemble, rise and to cooperate composition minor air cell (2) with other part, air chamber (10), the effect of fuel chamber (14), with the effect of playing shell, on the upper surface of valve casing or on the specification with: as misfire, the difficult point fire hear simultaneously ring z z z give vent to anger sound or when just point has caught fire fire prosperous especially when big, be reduction valve gas leakage, or the explanation of having gone bad, the main effect of writing this language is: when reduction valve gas leakage, when having gone bad, can make the user know that reduction valve has leaked the effect that bent out of shape.Lever (16) one ends are connected with the middle of platen (11), the other end is connected with piston, and it is made of plastics, and the action that it mainly rises on the platen (11) is passed on the piston, piston is issued in the fluctuation of platen (11), epithelium (12) closes inlet hole, open the effect of inlet hole.One end of piston (17) is on inlet hole (20) next door, the other end is connected with an end of lever (16) actively on its end in fuel chamber (14), it mainly plays a part under lever, close and open the effect of inlet hole, it is made by rubber, Nylon.Suction tude (18) is fixedly connected on a side of valve casing (15), it is on the opposite of steam outlet pipe, it is made up of screw pipe, handwheel, inlet hole (20), utilize handwheel to be tightened on suction tude on the oil liquefied gas steel cylinder, inlet hole is positioned at the centre of suction tude, one end of inlet hole is communicated with suction tude, the other end communicates with fuel chamber (14) and is subjected to the control of piston (17), it mainly plays a part to screw and is installed on the steel cylinder, play a part the combustion gas in the steel cylinder is controlledly led in the fuel chamber, it is made with metallic material.

Abundant place (19) is the some of little epithelium (4), it is in the neutral position of little epithelium, it be the neutral position of little epithelium (4) do the little epithelium of more abundant firm some, when little epithelium (4) is pressed on valve casing (15) by the pressurized gas in the air chamber (10), when spiracle (3) goes up, abundant place (19) by chance is pressed on the spiracle (3), it mainly rises when abundant place (19) are pressed on the spiracle (3), can be especially firmly abundant, can withstand from the pressure in the air chamber, and do not broken through by the high-pressure gas in the air chamber (10), make combustion gas not locate to flow to effect in the atmosphere in this spiracle (3).

Inlet hole (20) is positioned at suction tude, its end is at a side direction of suction tude air inlet, the other end is at the suction tude outgassing direction, just on the next door of piston (17), it is plastics or metal aperture pipe, it mainly plays the circulation combustion gas, and and after piston (17) cooperates, the interior combustion gas of control steel cylinder enters the effect that maybe can not enter fuel chamber (14).

Claims (4)

1. the epithelium frame (1) of an anti-gas-leak energy-saving pressure-reduction valve is in valve casing (15) the inside, spiracle (3) is to go up one or several aperture that flocks together that bores at valve casing (15), lid (5) is positioned at around top the reaching of seal ring (6), surge pipe (7) is a pipe that is connected above the valve casing (15), double-screw bolt (8) is positioned at surge pipe (7), the upper end of spring (9) be positioned at double-screw bolt (8) below, air chamber (10) is positioned at above the epithelium (12), platen (11) is positioned at epithelium (12) and goes up and be close on the epithelium, epithelium (12) is to be positioned at air chamber (10), a round film that rubber is made between the fuel chamber (14), steam outlet pipe (13) is positioned at an end of valve casing (15), fuel chamber (14) be positioned at epithelium (12) below, valve casing (15) is a shell of the present utility model, lever (16) one ends are connected with the middle of platen (11), one end of piston (17) is on the next door of inlet hole (20), suction tude (18) is fixedly connected on a side of valve casing (15), inlet hole (20) is positioned at suction tude (18), it is characterized in that abutting against the minor air cell (2) on air chamber (10) next door, with the little epithelium (4) that is positioned at valve casing (15) the inside, and be positioned at seal ring (6) on surge pipe (7) mouth.

2. anti-gas-leak energy-saving pressure-reduction valve according to claim 1, it is characterized in that minor air cell (2), minor air cell (2) is in spiracle (3), valve casing (15), epithelium frame (1) the inside, space above the little epithelium (4), minor air cell (2) is by epithelium frame (1), spiracle (3), little epithelium (4), an a part of common space of forming of valve casing (15), air in the minor air cell is communicated with atmosphere by spiracle (3), minor air cell (2) abuts against the next door of air chamber (10), between minor air cell (2) and the air chamber (10) is seal isolation, and in platen (11), above the epithelium (12).

3. anti-gas-leak energy-saving pressure-reduction valve according to claim 1, it is characterized in that little epithelium (4), little epithelium (4) is a circle, or the plane epithelium of square or rectangular shape, or it is middle slightly toward one side protrusion or recessed plane epithelium, or the round film of a bowl shape, a thicker abundant place (19) is arranged in the middle of the cuticle film, abundant place (19) is the component part of little epithelium (4), plane little epithelium (4) is installed on the epithelium frame (1), the little epithelium (4) of bowl shape can be directly installed on the inner wall of valve casing (15), the little epithelium (4) of bowl shape also can be installed on the epithelium frame (1), little epithelium (4) is positioned at the inside of valve casing (15), the opposite of spiracle (3), little epithelium (4) is the intersection of minor air cell (2) and air chamber (10), being minor air cell (2) above the little epithelium, is air chamber (10) below, and little epithelium (4) is made with rubber.

4. anti-gas-leak energy-saving pressure-reduction valve according to claim 1 is characterized in that seal ring (6), seal ring (6) be positioned at surge pipe (7) the mouth on, and the lid (5) below, seal ring (6) also can with the lid (5) make one.