CN2067344U - Improved pressure adjuster - Google Patents

Abstract

The utility model relates to an improved pressure adjuster. In the body of the utility model, the front end of an orifice is provided with a valve hole whose hole diameter is larger than the hole diameter of the orifice, and an opening and closing control lever controls the orifice to be opened and closed; a valve is formed between the orifice and the valve hole, and an on-off valve which can freely rise and fall is arranged in the valve hole; the upper orifice end sleeve of the on-off valve is provided with a leakproof ring; a start and stop lever whose diameter is smaller than the hole diameter of the orifice is arranged on the on-off valve. When the on-off valve rises so that the valve is plugged by the leakproof ring and the path of the on-off valve is closed, the start and stop lever runs through the orifice and enters a decompression chamber. The valve is also provided with a through hole which is communicated with an inlet so that the assembling effect that the pressure regulator combines the function of automatically closing the pipeline by means of the super flow capacity is obtained.

Description

Improved pressure adjuster

The utility model relates to a kind of improved pressure regulator, and it not only has decompression, but also has the effect that can be closed automatically when gas leakage.

With coal gas is example, and when its bottled liquid coal gas had just been discharged by steel cylinder, its pressure was quite big, therefore needs to install a pressure regulator at the position, source, so as to adjusting gas pressure, makes it remain on specified pressure constant state, uses for Gas appliance.

Fig. 1 is a kind of reduction valve that is contained on the gas cylinder commonly used, i.e. the assembled sectional view of regulator, and it comprises a body (100), body loam cake (110), pressure spring (120), pressure adjusting spring cap (130), one leakproof diaphragm (140), the lever (150) that a control opens and closes etc.; Wherein in the middle of the body (100) throttle orifice (103) is arranged, it is divided into two air chambers (101) and (105) with body, and wherein (101) are inlet, and air chamber (105) communicates with outlet (102).Leakproof diaphragm (140) combines it in conjunction with cap (142) by one with a metal disk (141), make leakproof diaphragm (140) have preferable intensity, and is connected in conjunction with lever (150) end of cap (a 142) lower end and a control keying.Near near the throttle orifice (103) pillar (104) is arranged in the body (100), there is a circular hole to penetrate on it for lever (150), this pillar is as the fulcrum of control keying lever (150), and this another end of control keying lever (150) is inserted in a leakage prevention sheet (151).Whole leakproof diaphragm (140) is inserted in body loam cake (110) after having assembled with the lever elements such as (150) of controlling keying again, with screw or the cold draw that utilizes body itself with body and body loam cake (110) riveted, it is become one, again pressure adjusting spring (120) is put on the metal disk (141) from the circular hole (111) of body loam cake top, rotate the pressure adjusting spring cap (130) of packing into, adjust pressure adjusting spring cap (130), make pressure spring (120) that a suitable elastic force be arranged, bonnet is gone into a capping (112).

During use, to enter the mouth (101) be connected to coal gas source or gas cylinder, the flow that inlet (101) sets by throttle orifice (103) consumes or when making the flow of using up greater than exporting (102), then the pressure in the air chamber (105) immediately rises, make pressure in the air chamber (105) greater than the tension force of pressure spring (120), whole leakproof diaphragm elements such as (140) is risen because of air chamber (105) expands affects control to open and close lever (150) rising, by lever principle, the leakage prevention sheet (151) that is positioned at other end of fulcrum is descended to regulate throttle orifice (103).When the fluid continuation of outlet (102) side is flowed out, when making pressure in the air chamber (105) drop to tension force less than pressure spring (120), then leakproof diaphragm elements such as (140) promptly descends, to open throttle orifice (103) again, make fluid flow into air chamber (105) rapidly, repetitiousness circulation like this makes air chamber (105), outlet (102) have the effect of constant voltage and decompression, and the above is the structure and the principle of coal gas regulator commonly used.

With regard to said structure, its outlet (102) is connected to Gas appliance with flexible pipe, if this flexible pipe has breakage when causing coal gas to rush down outward, owing to be not provided with any signalling device, so very difficult in time discovery of user and very easily lead to disaster.

A kind of prior art that addresses the above problem is to install the super flow automatic control device of a gaspipe line before regulator additional, damaged or other undesired reasons cause producing a large amount of gas leakage when forming super flow phenomenon to this device at pipeline, the pressure difference of utilizing the steel ball two ends to be born is power, steel ball is rolled and blocking pipeline, to reach the purpose of closing automatically.Yet, when being applied to gaspipe line, if long slightly at interval during each use, when no coal gas gas exists in the rubber pipe that its outlet is connected, when the steel cylinder that turns on the gas-fire is desired to reuse, even rubber pipe does not have damaged gas leakage, its moment easily forms similar super flow phenomenon, makes the automatic blocking pipeline of steel ball and forms mistake and close, therefore spontaneous generation gas-break phenomenon when the unlatching gas cooker switch, must go back to press again logical button again, be unequal to being tired of so its actual use is upward tired.Its super flow automatic control device provided the guarantee of many one decks originally for the user, but its phenomenon that easily causes mistake to close, make the Consumer produce inconvenience in many uses, just as so-called not Meng Qili, instead bear the inconvenience that it uses earlier, improve part so still have it not attain.

The purpose of this utility model is to overcome above-mentioned defective, and a kind of improved pressure regulator is provided.This regulator is that the throttle orifice front end in the present coal gas regulator that uses installs a keying valve additional, thus the double effects that acquisition decompression and super-flow are closed automatically.It is simple in structure, and is cheap for manufacturing cost, and is not subjected to the restriction of use angle again.

It is not only convenient but also can ensure the improvement type pressure regulator that it is safe that another purpose of the present utility model provides a kind of use.Its structure is that the inlet with regulator is divided into two paths and is located at the front and back that open and close valve respectively, in actual use, when the user turns on the gas-fire the steel cylinder switch, along with open and close that valve rises moment limited amount coal gas via the valve hole, throttle orifice flows into the underpressure chamber, impelling control to open and close the lever roof pressure opens and closes valve and opens valve automatically, there is not the existence of coal gas body even therefore be connected to the rubber pipe of outlet, also can open pipeline automatically, and the phenomenon of dying is closed in unlikely generation because of mistake, and, also can in time blind off a line automatically to avoid the generation of unexpected storms if gaspipe line takes place damaged or other abnormalities when causing super flow.

For achieving the above object, the improvement type pressure regulator that the utility model proposes includes: one has the body of underpressure chamber, but the entrance and exit of conducting, be located at this underpressure chamber end face elasticity leakproof diaphragm, be located at the metal disk of this diaphragm end face, lid is located on the body, be located at the pressure adjusting spring cap that covers in order to loam cake, the spiral shell of this diaphragm of solid pressure, the one end props up this pressure adjusting spring cap, and the other end then props up the pressure spring of this metal disk; One control opens and closes lever, its body body precalculated position is hubbed on the set throttle orifice side of this inlet, the one end with articulate in order to the cap that combines that makes up this metal disk and leakproof diaphragm, the other end then is provided with a leakage prevention sheet, be somebody's turn to do the throttle orifice of inlet in order to shutoff, this also connects one in conjunction with cap top and leads to mechanism again by what pull bar was formed, wherein a controlled keying lever is controlled the throttle orifice front end of opening or closing and is provided with a valve hole bigger than the aperture of throttle orifice in this body, form a valve between this throttle orifice and valve hole, but the keying valve of installing one free lifting in this valve hole, be arranged with a leakproof ring in the upper throttling nose end of this keying valve, also be provided with a start and stop lever littler on this keying valve than the aperture of throttle orifice, rise and make the leakproof ring stop up valve and when closing its path, this start and stop lever runs through throttle orifice and enters the underpressure chamber when opening and closing valve.This valve hole also is provided with and the through hole that enters the mouth and communicate, whereby when exporter's fluid flow surpasses the flow that throttle orifice sets, intrinsic underpressure chamber produces the decompression phenomenon makes control open and close lever away from throttle orifice, therefore, what open and close climbing powers such as pressure difference that valve flows by fluid to produce and flow velocity influences the rising throttle down, has the safe effect that super flow is blinded off a line automatically concurrently with the acquisition pressure regulator.

Its valve of improvement type pressure regulator that the utility model proposes can be one and gradually slopes inwardly and be cone shape.Described through hole can be divided into a bigger through hole and a less through hole, this bigger through hole is communicated with the place ahead of valve, and make and open and close valve and just be positioned at its lower end than small through hole when dropping to the bottom, bigger through hole then is positioned at the top that opens and closes valve, and, also be provided with the suitable adjustment hole in an aperture in this inlet, whereby, make fluid just via adjustment hole, flow into through hole and make the moment that opens and closes valve rising throttle down, utilize an amount of fluid of its time official post via adjustment hole, inlet, large through-hole, valve, throttle orifice flows into the underpressure chamber, is expanded in the underpressure chamber and impels control to open and close lever roof pressure start and stop lever and automatic Open valve, with the inconvenience of avoiding using.

The improvement type pressure regulator that the utility model proposes, wherein the aperture of this adjustment hole is littler than the aperture of large through-hole.Be provided with a bigger gas storage chamber in the valve hole and between than small through hole, and can a ccontaining spring within gas storage chamber, support to open and close valve with the top of spring.

Below in conjunction with accompanying drawing to structure of the present utility model, hold a little and be described in detail:

Fig. 1 is the assembled sectional view of wirking pressure regulator.

Fig. 2 is in the pressure regulator during no fluid, open and close valve drop to bottom the time assembled sectional view.

Fig. 3 is the moment of fluid feed pressure regulator, and control opens and closes the terminal roof pressure keying of lever valve makes it still be held open the action schematic representation of state.

When Fig. 4 made the underpressure chamber produce decompression for the damaged gas leakage of the terminal pipeline that is connect of pressure regulator outlet, control opened and closed the lever end away from throttle orifice, makes the action schematic representation that opens and closes valve rising throttle down.

Fig. 5 is the action schematic representation of pull bar when making it logical again.

Fig. 6 is the assembled sectional view with embodiment of gas storage chamber.

At first see also Fig. 2, it is an assembled sectional view of the present utility model, by a body (200), body loam cake (210), pressure spring (220), pressure adjusting spring cap (230), a leakproof diaphragm (240) one controls open and close lever (250), one opens and closes valve (260), and logical again mechanism elements such as (270) is formed.Be provided with a throttle orifice (203) in body (200), body is divided into two parts, one is inlet (210), and another is underpressure chamber (205), and it communicates with outlet (202); Leakproof diaphragm (240) is located between body (200) and the body loam cake (210), itself and a metal disk (241) is made up in conjunction with cap (242) by one, and is connected in conjunction with cap (a 242) lower end and control keying lever (a 250) end.Near near the fulcrum that has the throttle orifice (203) pillar (204) as control lever (250), make to open and close lever and affected by the rising of leakproof diaphragm and close throttle orifice (203) in the body (200).Be provided with a valve hole (2031) bigger slightly than throttle orifice (203) aperture in throttling the place ahead, establishing one between throttling (203) and valve hole (2031) gradually slopes inwardly and is cone shape valve (2032), installing one opens and closes valve (260) in throttle orifice (203) and valve hole (2031), is sealed on the body (200) by a capping (268).Keying valve (260) is provided with the start and stop lever (261) of a less external diameter, and in opening and closing a multiple sheathed leakproof ring (265) on the valve, when opening and closing valve (260) rising, start and stop lever (261) enters underpressure chamber (205) via throttle orifice (203), makes the leakproof ring (265) that opens and closes on the valve stop up valve (2032) and cut off the circulation of pipeline.And the lower end of valve hole (2031) is provided with a through hole (2012), communicate with inlet (201), for making keying valve (260) have enough fluids to enter underpressure chamber (205) before because of the mobile rising throttle down (2032) of fluid, inlet (201) locates to be provided with the aperture through hole (2013) big than through hole (2012), the place ahead in valve (2032) communicates, and make when opening and closing valve (260) decline, through hole (2012) just is positioned at its lower end, and bigger through hole (2013) is positioned at its top; Also be provided with the suitable adjustment hole (2014) (its aperture is generally little than large through-hole) in an aperture in the inlet (201), when making inlet fluid pressure height variant, can regulate through hole (2012) respectively, the pressure and the flow velocity of through hole (2013), guarantee to open and close valve (260) rise before limited amount flow enter underpressure chamber (205) and ［ also can directly inlet (201) directly be made adjustment hole (2014) ］.

Leakproof diaphragm (240) combines it in conjunction with cap (242) by one with a metal disk (241), make leakproof diaphragm (240) have preferable intensity; Open and close lever (250) and connect a control, and also be inserted in a leakage prevention sheet (251), be spirally connected in conjunction with cap (242) upper end and one lead to mechanism again by what pull bar (270) was formed in another end (252) in conjunction with cap (242) lower end.

This logical again mechanism is by a pull bar (270), one draw ring (272), one returning spring (273), certain draw ring (274), one draws a cap (275) and a clasp (271) to form, its assemble sequence is for being put into draw ring (272) earlier by the tapped hole (212) of body loam cake top, use clasp (271) to be buckled in the upper end of pull bar (270) again, when making the stressed rising of draw ring (272), pull bar (270) can rise simultaneously, and draw ring (272) is when descending, pull bar (270) is not influenced by it then, external diameter in draw ring (272) is inserted in a returning spring (273) more then, rotate the positioning ring (274) of packing into, with with body on the tapped hole (212) that covers be screwed fixing, making the lower end of returning spring (273) lean against the larger-diameter end face in draw ring (272) lower end (276) locates, the upper end then peaks at the endoporus prominence of positioning ring, be inserted in again one draw cap (275) make draw ring (272) with draw cap (275) to become one, its effect is when drawing cap (275), the clasp (271) on draw ring (272) the top pull bar (270) then, pull bar (270) is risen thereupon, owing to be subjected to the restriction of positioning ring (274), make pull bar (270) rising certain height, when strength disappears, then because of the tension force of returning spring (273), make draw ring (272) and draw cap (275) to drop to original position, pull bar (270) is not influenced by it then.

Utilize fluid mechanics principle, when fluid flows in the different caliber of sectional area, flow velocity of its each section and pressure are all different, because the aperture of through hole (2013) is big than through hole (2012), so when turning on the gas-fire the steel cylinder switch, make coal gas via adjustment hole (2014), when inlet (201) flows into through hole (2012), mobile the making that valve hole (2031) is caused opens and closes the moment that valve (260) rises, utilization is via through hole (2012), time difference between through hole (2013), an amount of coal gas is promptly arranged via adjustment hole (2014), inlet (201), through hole (2013), valve (2032), throttle orifice (203) flows into underpressure chamber (205), expanded in underpressure chamber (205) and impel leakproof diaphragm (240) to drive control keying lever (250) rising, because of it is positioned at pillar (204) control keying lever end (251) the decline roof pressure start and stop lever (261) of end in addition, stop and open and close valve (260) continuation rising, make valve (2032) still be held open state, as shown in Figure 3.Fig. 2 is then for opening and closing valve during no fluid because of the weight schematic representation bottom dropping to itself in the regulator.The rising that opens and closes valve (260) again be since fluid via through hole (2012) flow valve hole (2031), valve (2032) is caused, and mobile making opens and closes valve (260) and produces pressure difference in two ends up and down, and overcome the weight of keying valve (260) and risen by its pressure difference and flow velocity.But as the pipeline that is connected to outlet (202) is when meeting breakage or other abnormal reasons and causing the gas leakage of super-flow, this moment, the flow of outlet set flow greater than throttle orifice (203), decompression is promptly caused in underpressure chamber (205), make control open and close the end (251) of lever away from throttle orifice (203), make keying valve (260) rise to the summit and throttle down (2032), as shown in Figure 4, exempt the possibility that unexpected storms takes place.After the pipeline reparation, that draws again logical mechanism draws cap (275), because of draw ring (272) is subjected to the restriction of positioning ring (274), make pull bar (270) have to rise to middle section position, same urging of controlled keying lever of keying valve (260) and drop to middle section position, make coal gas flow into underpressure chamber (205), pressure rises and forms a path.As shown in Figure 5, the relevant position schematic representation when drawing cap (275) to rise.

When its pressure of fluid that flows into from inlet is high pressure conditions or during for big flow, the moment of its inflow, adjustment hole (2014) has pressure and the flow velocity of regulating through hole (2012) through hole (2013) respectively, with guarantee to open and close valve (260) not reason rise rapidly and mistake closing valve (2032).When if the pipeline that outlet (202) is connect is long, then can form a gas storage chamber than large space (280) in valve hole (2031) and between than small through hole (2012), and in gas storage chamber (280) a ccontaining spring (281), support to open and close valve (260) with the top of spring (281), as shown in Figure 6.The moment that this moment, fluid flowed into, gas storage chamber (280) has storage and opens and closes valve (260) bottom and because of the increase of fluid pressure is risen to slow down via the fluid that flows into than small through hole (2012), thereby have time enough to flow into underpressure chamber (205) via bigger through hole (2013) by fluid, therefore also can guarantee to open and close valve (260) not reason rise rapidly and mistake closing valve (2032).

Comprehensively above-mentioned, the utlity model has multiple efficacies, not only (not must any extra operation) easy to use, and when in using, meeting the gas leakage of super-flow, also its pipeline of automatic switch timely is the high practical product of a kind of security.

Claims (5)

1, a kind of improvement type pressure regulator, it comprises: one has the body of a underpressure chamber, but the entrance and exit of conducting, be located at the elasticity leakproof diaphragm of this underpressure chamber end face, be located at the metal disk of this diaphragm end face, lid is located on the body is located at the pressure adjusting spring cap that covers in order to the loam cake spiral shell of this diaphragm of solid pressure, the one end props up this pressure adjusting spring cap, the other end then props up the pressure spring of this metal disk, one control opens and closes lever, its body body precalculated position is hubbed on the set throttle orifice side of this inlet, the one end with articulate in order to the cap that combines that makes up this metal disk and leakproof diaphragm, the other end then is provided with a leakage prevention sheet, be somebody's turn to do the throttle orifice of inlet in order to shutoff, this also connects one in conjunction with cap top and leads to mechanism again by what pull bar was formed, it is characterized in that: a controlled keying lever is controlled the throttle orifice front end of opening or closing and is provided with a valve hole bigger than the aperture of throttle orifice in this body, form a valve between this throttle orifice and valve hole, but the keying valve of installing one free lifting in this valve hole, be arranged with a leakproof ring in the upper throttling nose end of this keying valve, also be provided with a start and stop lever littler on this keying valve than the aperture of throttle orifice, rise and make the leakproof ring stop up valve and when closing its path when opening and closing valve, this start and stop lever runs through throttle orifice and enters the underpressure chamber, and this valve hole also is provided with and the through hole that enters the mouth and communicate.

2, improvement type pressure regulator as claimed in claim 1 is characterized in that: this valve is one gradually to slope inwardly and be cone shape.

3, improvement type pressure regulator as claimed in claim 1, it is characterized in that: this through hole is divided into a bigger through hole and a less through hole, this bigger through hole is communicated with the place ahead of valve, and make and open and close valve and just be positioned at its lower end than small through hole when dropping to the bottom, bigger through hole then is positioned at the top that opens and closes valve, and, also be provided with the suitable adjustment hole in an aperture in this inlet.

4, improvement type pressure regulator as claimed in claim 3, it is characterized in that: the aperture of this adjustment hole is littler than the aperture of large through-hole.

5, improvement type pressure regulator as claimed in claim 3 is characterized in that: valve hole and than being provided with a bigger gas storage chamber between the small through hole, and can a ccontaining spring within gas storage chamber, support to open and close valve with the top of spring.

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