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WO1998030859A1 - Regulateur de pression de gaz pour lanceur de projectiles de peinture pourvu d'une soupape supplementaire d'evacuation de surpression - Google Patents

Regulateur de pression de gaz pour lanceur de projectiles de peinture pourvu d'une soupape supplementaire d'evacuation de surpression Download PDF

Info

Publication number
WO1998030859A1
WO1998030859A1 PCT/AU1997/000834 AU9700834W WO9830859A1 WO 1998030859 A1 WO1998030859 A1 WO 1998030859A1 AU 9700834 W AU9700834 W AU 9700834W WO 9830859 A1 WO9830859 A1 WO 9830859A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
regulator
orifice
piston
pressure
Prior art date
Application number
PCT/AU1997/000834
Other languages
English (en)
Inventor
Warwick Charles Mcmullen
Original Assignee
Warwick Charles Mcmullen
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Warwick Charles Mcmullen filed Critical Warwick Charles Mcmullen
Publication of WO1998030859A1 publication Critical patent/WO1998030859A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/70—Details not provided for in F41B11/50 or F41B11/60
    • F41B11/72—Valves; Arrangement of valves
    • F41B11/724—Valves; Arrangement of valves for gas pressure reduction
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/10—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger
    • G05D16/107—Control of fluid pressure without auxiliary power the sensing element being a piston or plunger with a spring-loaded piston in combination with a spring-loaded slideable obturator that move together over range of motion during normal operation

Definitions

  • This invention relates to fluid regulator apparatus. More particularly although not exclusively it discloses an improved regulator for dispensing gas from a high pressure supply.
  • Pressure regulators are typically installed on high pressure tanks or bottles so as to dispense gas at a constant usable pressure.
  • Existing regulators normally comprise a valve and seat assembly which is balanced by opposed spring forces and the supply pressure from the tank or bottle. By varying the spring force applied to one side of the valve the supply pressure from the regulator can be reduced to a usable value.
  • the outlet pressure can increase up to 10% over the initial setting as the bottle or tank pressure decays with use. This is caused by the initial balance of forces on the valve being disrupted and the valve thereby moving further off the seat. In some applications such as for example skirmish paintball apparatus this increase in pressure can disqualify a player through excessive projectile velocity.
  • a regulator for dispensing gas from a high pressure supply at a predetermined reduced pressure said regulator comprising a housing having an outlet for said reduced pressure, an inlet for connection to said high pressure supply and a valve and seat assembly disposed therebetween, spring means for applying forces to said valve whereby in use when the inlet is connected to said high pressure supply said valve is balanced at an equilibrium position to pass gas at said predetermined reduced pressure to said outlet and venting means downstream of said valve to dissipate excessive outlet pressure above said predetermined reduced pressure arising from movement of said valve away from said equilibrium position .
  • said spring means includes a coil spring acting through a piston onto the downstream side of said valve.
  • the force applied by said coil spring may be varied by an adjustable cap in said housing.
  • said venting means comprises an orifice extending through the wall of said housing which dissipates said excess outlet pressure to atmosphere .
  • Figure 1 is a perspective view of a gas regulator according to this concept.
  • Figure 2 is a cross-sectional view of the regulator along the lines A-A of figure 1
  • Figures 3A and 3B are detailed views of the valve and valve seat which are used in the regulator of figure 1
  • Figure 4 is a schematic view of the preferred contact surfaces of the valve and valve seat as formed on initial assembly of the housing
  • Figure 5 is a schematic view of the valve seat and valve in the equilibrium position.
  • the regulator may comprise a cylindrical housing of two pieces 1A and IB. These upper and lower sections engage via screw threads 2 An 0 ring 3 is also provided in the joint 3A for a gas tight seal. There is a threaded inlet 4 at the bottom of the housing for connection to a high pressure gas bottle or the like (not shown) and an outlet 5 in the side. During operation of the regulator the gas flows through the inlet 4, around the coil spring 6, up between the valve 7 and valve seat 8 and into a low pressure chamber 9 immediately below piston 10. From this chamber it passes through channels 11 and 12 formed between housing sections 1A and IB to a further annular chamber 12A and then outlet 5.
  • the * position of the valve 7 in relation to the seat 8 determines the amount of gas passing through the regulator and the magnitude of the pressure at the outlet 5. This position is determined by a balance of the opposing forces applied by an upper coil spring 13 acting through the piston 10 on the downstream side of the valve and the lower coil spring 6 and inlet gas pressure on the upstream side.
  • the valve preferably comprises a central cone shaped contact surface 7 . Extending out from the large end of the cone is a circular boss 7B which seats within the coil spring 6 as shown in figure 2. The opposite end of the valve is formed into a shaft 7C of reduced diameter which extends up through the valve seat 8 and flow channel 14 in the upper housing and abuts the underside of the piston 10.
  • the valve seat 8 as also shown in figures 2 and 3B is circular with a bottom detent 8A of depth .305 mm +0.00 -.005, sealing surfaces 8B and 8C which engage against the upper and lower housing sections and a central bore 8D to receive the aforementioned valve 7.
  • the seat is preferably made of Polytrichlorf luoroethylene (Kel-f).
  • Kel-f Polytrichlorf luoroethylene
  • the contacting edge of the seat is preferably initially machined to a radius of .127 mm +0.00 -0.005.
  • the contacting cone shaped surface 7A of the valve is machined to an angle A of about 45 degrees to its longitudinal axis as shown.
  • the valve 7 is also preferably formed from stainless steel. To obtain upon initial assembly of the housing the necessary permanent deformation of the valve seat for a flat sealing area B as shown in figure 4 suitable spring constants are chosen of for the lower spring 6 and the upper spring 13.
  • the force exerted by the upper spring 13 is adjustable by means of a threaded cap 15. Turning this cap down compresses the spring 13 and increases the force applied through the piston 10 on the downstream side of the valve. This tends to move the valve 7 further off the seat 8 and increases the gas pressure at the outlet 5. Turning the cap 15 out of the housing has the opposite effect. Typical operating pressures for a regulator of this type would be of the order of 42,000 kpa at the inlet and about 4,200 kpa at the outlet. Over time however as the high pressure gas supply is depleted the inlet pressure decreases and the previously set equilibrium position of the valve is disrupted. The result is that the valve tends to open further with an accompanying increase of up to 10% in the downstream pressure in chamber 9.
  • an orifice 16 is provided which extends from the piston bore 17 through to the outside of the housing and substantially reduces or eliminates this unwanted pressure.
  • the orifice is positioned relative to the piston such that as the outlet pressure begins to rise in chamber 9 the increased force exterted on the underside of piston 10 moves it upwardly so that the piston seal 18 passes above the orifice opening. This puts the orifice in communication along piston bore 19 with chamber 9 to exhaust the increased pressure.
  • the piston seal 18 subsequently moves down under the action of spring 13 to the equilibrium position at which the orifice is again isolated.
  • the piston will tend to oscillate between upper and lower positions as necessary to restrict variations in outlet pressure with this particular example to less than about 5% .
  • the diameter of the orifice is about 1.5 mm however the invention is not limited to this dimension.
  • the orifice may also act as a continuous safety vent in the event that the valve becomes jammed open or otherwise defective and passes supply pressure.
  • the increased pressure in the chamber 9 in this case holds the piston seal 18 above the orifice 16 to continuously exhaust the excess gas.
  • This feature is of particular value with gas powered skirmish paintball equipment as the outlet pressure for such apparatus has to be precisely limited to provide a projectile speed of no greater than 91 metres per second. Pressure variations with existing regulators make compliance with this difficult.
  • a lug 20 may also be formed on the top of the piston 10. This facilitates its removal for maintenance or inspection without disassembly of the valve body.
  • Provision for filling the supply bottle or tank is provided through an inlet 21 in the side of the housing opposite the outlet 5.
  • the inside surface of the inlet is threaded for engagement with a non-return valve housing 22 (see figure 1).
  • the port is preferably offset to one side of the inlet as shown in figure 2. The non-return valve when open then abuts the end wall of the inlet without obstructing the port.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

L'invention concerne un régulateur de pression capable de fournir un gaz sous une pression réduite spécifiée. Le régulateur comprend un carter (1A, 1B) pourvu d'une sortie (5) basse pression, d'une entrée (4) haute pression, d'une soupape (7), et d'un siège de soupape (8). Des ressorts (6, 13) soumettent la soupape (7) à des forces de façon qu'en service, la soupape (7) soit dans une position d'équilibre laissant passer vers la sortie considérée (5) le gaz à la pression réduite spécifiée. Un évent (16) en aval de la soupape (7) permet d'évacuer l'excédant de pression de sortie dépassant la pression réduite spécifiée. Le fonctionnement de l'évent (16) dépend de la position d'un piston (10). L'orifice (21) du carter (1B), qui sert à recharger l'alimentation haute pression, peut comporter une soupape anti-retour. Le siège de la soupape principale peut être en Polytrichlorofluoroéthylène (Kel-f).
PCT/AU1997/000834 1996-12-24 1997-12-08 Regulateur de pression de gaz pour lanceur de projectiles de peinture pourvu d'une soupape supplementaire d'evacuation de surpression WO1998030859A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU76467/96A AU7646796A (en) 1996-12-24 1996-12-24 Improvements in gas regulators
AU76467/96 1996-12-24

Publications (1)

Publication Number Publication Date
WO1998030859A1 true WO1998030859A1 (fr) 1998-07-16

Family

ID=3757430

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1997/000834 WO1998030859A1 (fr) 1996-12-24 1997-12-08 Regulateur de pression de gaz pour lanceur de projectiles de peinture pourvu d'une soupape supplementaire d'evacuation de surpression

Country Status (2)

Country Link
AU (1) AU7646796A (fr)
WO (1) WO1998030859A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0903533A2 (fr) * 1997-09-19 1999-03-24 Kabushiki Kaisha Neriki Ensemble soupape pour bouteilles à gaz et vanne de réduction de pression utilisée
GB2347735A (en) * 1999-03-12 2000-09-13 Brocock Limited Compressed gas cartridge for multiple discharge use
FR2818727A1 (fr) * 2000-12-21 2002-06-28 Taema Soupape a amplification d'ouverture et regulateur de pression equipe d'une telle soupape
GB2372552A (en) * 2000-12-22 2002-08-28 Taylor Hugh Francis Airgun regulators
US6959703B1 (en) * 2004-06-09 2005-11-01 Michael Steven Spurlock Paintball gun throttle regulator device
WO2006070909A1 (fr) * 2004-12-27 2006-07-06 Jtekt Corporation Detendeur
EP2236905A1 (fr) * 2009-04-03 2010-10-06 Tru-Air Limited Appareil reremplissable pour le stockage de gaz comprimé
WO2012164106A1 (fr) * 2011-05-30 2012-12-06 Gamo Outdoor, Sl Culot pour la chambre d'un pistolet sport ou d'une carabine sport et son procédé de fabrication
CN103940290A (zh) * 2013-01-21 2014-07-23 重庆建设工业(集团)有限责任公司 气手枪恒压装置
EP2770240A1 (fr) * 2013-02-26 2014-08-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Détendeur de pression, robinet et bouteille munis d'un tel détendeur
WO2015152338A1 (fr) * 2014-04-04 2015-10-08 株式会社コスメック Détendeur
CN111075969A (zh) * 2019-12-20 2020-04-28 西安航天动力研究所 一种小型化液体调压装置
CN111380402A (zh) * 2020-02-24 2020-07-07 哈尔滨工业大学 一种高压空气炮自动炮闩
US11822354B1 (en) 2022-06-01 2023-11-21 Husqvarna Ab Pressure reducer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066932A (en) * 1980-01-03 1981-07-15 Black & Decker Pressure regulator and safety valve assembly
US4476888A (en) * 1981-08-12 1984-10-16 Dr. H. Tiefenbach Gmbh & Co. Overpressure valve
EP0467089A2 (fr) * 1990-06-21 1992-01-22 Thomas G. Kotsiopoulos Canon semi-automatique à gaz comprimé
EP0588531A1 (fr) * 1992-09-09 1994-03-23 Kabushiki Kaisha Neriki Assemblage de soupape de robinet pour bouteille à gaz
AU3260995A (en) * 1994-09-02 1996-03-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas control and dispensing assembly and gas storage device comprising such a unit
WO1997005535A1 (fr) * 1995-07-25 1997-02-13 Smart Parts, Inc. Vanne pneumatique et regulateur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2066932A (en) * 1980-01-03 1981-07-15 Black & Decker Pressure regulator and safety valve assembly
US4476888A (en) * 1981-08-12 1984-10-16 Dr. H. Tiefenbach Gmbh & Co. Overpressure valve
EP0467089A2 (fr) * 1990-06-21 1992-01-22 Thomas G. Kotsiopoulos Canon semi-automatique à gaz comprimé
EP0588531A1 (fr) * 1992-09-09 1994-03-23 Kabushiki Kaisha Neriki Assemblage de soupape de robinet pour bouteille à gaz
AU3260995A (en) * 1994-09-02 1996-03-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Gas control and dispensing assembly and gas storage device comprising such a unit
WO1997005535A1 (fr) * 1995-07-25 1997-02-13 Smart Parts, Inc. Vanne pneumatique et regulateur

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0903533A2 (fr) * 1997-09-19 1999-03-24 Kabushiki Kaisha Neriki Ensemble soupape pour bouteilles à gaz et vanne de réduction de pression utilisée
EP0903533A3 (fr) * 1997-09-19 1999-08-25 Kabushiki Kaisha Neriki Ensemble soupape pour bouteilles à gaz et vanne de réduction de pression utilisée
GB2347735A (en) * 1999-03-12 2000-09-13 Brocock Limited Compressed gas cartridge for multiple discharge use
FR2818727A1 (fr) * 2000-12-21 2002-06-28 Taema Soupape a amplification d'ouverture et regulateur de pression equipe d'une telle soupape
EP1233218A1 (fr) * 2000-12-21 2002-08-21 Taema Soupape à amplification d'ouverture et régulateur de pression équipé d'une telle soupape
US6675824B2 (en) 2000-12-21 2004-01-13 Taema Valve with wilder opening and pressure regulator equipped with such a valve
GB2372552A (en) * 2000-12-22 2002-08-28 Taylor Hugh Francis Airgun regulators
US6959703B1 (en) * 2004-06-09 2005-11-01 Michael Steven Spurlock Paintball gun throttle regulator device
WO2006070909A1 (fr) * 2004-12-27 2006-07-06 Jtekt Corporation Detendeur
US9400506B2 (en) 2004-12-27 2016-07-26 Toyota Jidosha Kabushiki Kaisha Pressure reducer
DE112005003291B4 (de) * 2004-12-27 2015-05-07 Toyota Jidosha Kabushiki Kaisha Druckreduzierer
EP2236905A1 (fr) * 2009-04-03 2010-10-06 Tru-Air Limited Appareil reremplissable pour le stockage de gaz comprimé
WO2012164106A1 (fr) * 2011-05-30 2012-12-06 Gamo Outdoor, Sl Culot pour la chambre d'un pistolet sport ou d'une carabine sport et son procédé de fabrication
CN103733014A (zh) * 2011-05-30 2014-04-16 加莫户外有限公司 用于运动手枪或步枪的枪膛的套管及其制造方法
US8833354B2 (en) 2011-05-30 2014-09-16 Gamo Outdoor, Sl Bushing for the chamber of a sporting pistol or rifle and manufacturing method
CN103940290A (zh) * 2013-01-21 2014-07-23 重庆建设工业(集团)有限责任公司 气手枪恒压装置
CN103940290B (zh) * 2013-01-21 2016-05-18 重庆建设工业(集团)有限责任公司 气手枪恒压装置
FR3002614A1 (fr) * 2013-02-26 2014-08-29 Air Liquide Detendeur de pression, robinet et bouteille munis d’un tel detendeur
EP2770240A1 (fr) * 2013-02-26 2014-08-27 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Détendeur de pression, robinet et bouteille munis d'un tel détendeur
WO2015152338A1 (fr) * 2014-04-04 2015-10-08 株式会社コスメック Détendeur
CN106062651A (zh) * 2014-04-04 2016-10-26 克斯美库股份有限公司 减压阀
EP3101507A4 (fr) * 2014-04-04 2017-11-15 Kosmek Ltd. Détendeur
US10261526B2 (en) 2014-04-04 2019-04-16 Kosmek Ltd. Pressure reducing valve
CN111075969A (zh) * 2019-12-20 2020-04-28 西安航天动力研究所 一种小型化液体调压装置
CN111075969B (zh) * 2019-12-20 2021-11-02 西安航天动力研究所 一种小型化液体调压装置
CN111380402A (zh) * 2020-02-24 2020-07-07 哈尔滨工业大学 一种高压空气炮自动炮闩
CN111380402B (zh) * 2020-02-24 2022-01-18 哈尔滨工业大学 一种高压空气炮自动炮闩
US11822354B1 (en) 2022-06-01 2023-11-21 Husqvarna Ab Pressure reducer

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Publication number Publication date
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