WO2007029273A1 - Multi-valve with a gas pressure reducer - Google Patents
Multi-valve with a gas pressure reducer Download PDFInfo
- Publication number
- WO2007029273A1 WO2007029273A1 PCT/IT2005/000513 IT2005000513W WO2007029273A1 WO 2007029273 A1 WO2007029273 A1 WO 2007029273A1 IT 2005000513 W IT2005000513 W IT 2005000513W WO 2007029273 A1 WO2007029273 A1 WO 2007029273A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- pressure reducer
- gas
- tank
- natural gas
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/06—Apparatus for de-liquefying, e.g. by heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0236—Multi-way valves; Multiple valves forming a multi-way valve system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0239—Pressure or flow regulators therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- This invention concerns in general systems for powering vehicles using gaseous fuel, such as natural gas, and refers in particular to a multi-valve for use in such systems.
- gaseous fuel such as natural gas
- the objective of this invention is to propose a multi-valve with at least one pressure reduction stage integrated in its body to form an easier and handier to install composite group and having a more ergonomic collocation of the various devices.
- Another objective of the invention is to propose a multi-valve with a body structured to hold a solenoid valve, at one tap, some safety accessories and a pressure reducer and provided with passages which allow loading of gas into the tank or cylinder, and an outlet of the gas at a reduced pressure from the tank or cylinder towards the engine through the pressure 5 reducer.
- Fig. 1 shows a cross-section of the multi-valve set in a plane containing a solenoid valve, tap and pressure reducer
- Fig. 2 shows a cross-section of the multi-valve in the direction of arrows A-A in Fig. 1 :
- Fig. 3 shows another cross-section of the multi-valve in the direction of arrows B-B in Fig. 1 :
- Fig. 5 shows a cross section of the multi-valve set with its components in a different layout
- Fig. 6 shows a cross-section according to arrows C-C in Fig. 1 ;
- Fig. 7 shows a cross-section of the multi-valve set with the solenoid valve and pressure reducer placed alongside each other.
- the multi-valve comprises a valve body 11 having a base section 12 which is fixed to a gas tank or cylinder - not shown.
- the body 11 has an inlet passage for the gas 13, an outlet passage for the gas 14 towards a user unit according to arrow U, and forms a seat for a normal manual tap 15, a seat for a solenoid valve 16 and a seat for a pressure reducer 17, plus some housings for safety accessories such as a thermal fusible pellet safety switch 19, a pressure and/or temperature sensor 20 and a membrane device 21 against excessive pressure.
- the set can furthermore, include an overpressure valve 18 directly associated with the pressure reducer 17 as shown in Fig. 1 or positioned at a distance from the reducer on a transit passage of the gas towards the solenoid valve 16, that is to say, downstream of the pressure reducer as shown in Figs. 5 and 7.
- the inlet passage 13 can be connected to a gas supply source according to arrows E in Fig. 1 and is provided with a no-return valve 13'.
- the tap 15 can be the screw - Fig. 1- or the ball type Figs. 5 and 7. It has a cartridge device 15' associated with a respective first valve housing 22 for manual opening and closing. In the example shown in Fig. 1 , this first housing of valve 22 is positioned along a first passage 23, or gas load passage, which leads from the tank inlet passage.
- This second valve housing 25 is placed in a second duct 26, or gas feed line to the user unit, which includes an initial section 26' which leads from the outlet of the pressure reducer 17 to the second valve housing 25 and a second section 26" from said second valve housing to the output passage 14 towards the user unit, either directly, or if required, through a second reduction stage of the pressure- not shown.
- the configuration of the pressure reducer 17 is well known. It can be positioned in different parts of the valve body 11 - Figs. 1, 5, 7,- always however, to be in contact, in input, with the inside of the cylinder by means of the same load duct 23 according to arrows R and, on exit, with the valve housing 25 of the solenoid valve 16 through the initial tract 26' of the aforementioned gas delivery duct 26 to the user unit.
- This initial tract 26' of the feed duct 26 can be integrated or made up of a channel 27 which extends in the tank having an anti-frost function - Figs. 4 and 6 - that is to maintain the gas flowing through at a reduced pressure, that is expanded, almost at the same temperature of the gas in the tank. Furthermore, in the valve body and more precisely in its base section a gas feed duct 23 to the safety devices 19, 21 directly from inside the tank - Fig. 3, has been machined.
- the gaseous fuel supplied to the input passage 13 travels along the load duct 23 and goes into the tank in the direction of arrows S- Figs. 1 and 2 - to fill it.
- the non-return valve in the input duct 13 automatically closes.
- the gaseous fuel can be used and fed to the user unit, that is the engine, passing through the pressure reducer and solenoid valve.
- the fuel in fact flows back through the initial duct 23 from the tank to the pressure reducer 17 where lowering of pressure is carried out.
- the fuel then flows from the pressure reducer output 17 to the solenoid valve 16 which by means of its opening and closing devices can manage the delivery of the fuel to the engine according to the M arrows.
- the pressure reducer 17 can be associated, if required, with a heating unit and the same pressure reducer can be configured and positioned on the valve body so as to be both external to, as shown in the drawings, and internal to the gas tank or cylinder. Furthermore, the pressure reducer 17 can be positioned adjacent to the solenoid valve 16 as shown in Fig. 7, so as to be able to use, depending on the need, the heat generated by the solenoid valve bobbin as a source of heat for said pressure reducer.
- At least part of the gas duct 27, that goes from the pressure reducer 17 output to the solenoid valve 16 and which extends into the tank, may be lagged or made of a thermo insulating material so as to safeguard the valve body and relative devices from cooling caused by the expansion of the gas when its pressure is reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention concerns a multi-valve for natural gas systems for powering vehicles, comprising a valve body (11), and in said body a gas inlet duct (13) connectable to a gas supply source, a gas outlet duct (14) towards the user unit and, between said inlet passage and said outlet passage, a general manual tap (15) and a solenoid valve (16) controlling at the loading of the gas in the tank and delivery of the gas to the user unit, and also housings for one or more safety devices. The multi-valve also incorporates a pressure reducer (17) with an inlet in communication with the tank or cylinder and an outlet in fluid contact with said solenoid valve through a duct that extends in the tank and that can be thermo-insulated or can be made itself of a thermo-insulating material.
Description
"MULTI-VALVE WITH A GAS PRESSURE REDUCER"
Field of the Invention
This invention concerns in general systems for powering vehicles using gaseous fuel, such as natural gas, and refers in particular to a multi-valve for use in such systems. Prior Art
On the tank or gas cylinders in gas systems for powering vehicles, and however between the tank and the motor to be powered by a gaseous fuel, is generally provided a so-called multi-valve which controls the loading of the gaseous fuel in the tank and the outlet of the fuel from the tank towards the user unit, that is the engine, in answer to control signals from a solenoid valve.
Usually a multi-valve like the one being considered here comprises a body that has effectively an inlet passage for the gas coming from a supply source and a load passage of the gas in or towards the tank to be loaded and which has a tap provided to place the load passage in communication with the tank, through the inlet controlled by a valve seat, and then the tank with the output towards the user unit through the solenoid valve.
When the gaseous fuel is loaded in the tank or cylinder it has a very high pressure which in the case of natural gas for powering vehicles can reach 200 bar or higher, which then requires to be drastically reduced when delivered to the engine.
This reduction in the pressure is carried out in most cases by at least one pressure reducer that can be positioned alongside or at a distance from the u % multi-valve, which usually forms a device of its own, even though connected to a gas outlet from the multi-valve. 5 Objectives and Summary of the Invention
The objective of this invention is to propose a multi-valve with at least one pressure reduction stage integrated in its body to form an easier and handier to install composite group and having a more ergonomic collocation of the various devices. 0 Another objective of the invention however is to propose a multi-valve with a body structured to hold a solenoid valve, at one tap, some safety accessories and a pressure reducer and provided with passages which allow loading of gas into the tank or cylinder, and an outlet of the gas at a reduced pressure from the tank or cylinder towards the engine through the pressure 5 reducer.
These objectives are reached in a multi-valve for the use with gas systems for powering vehicles according to the premise of claim 1 and characterised by the fact that it also houses a pressure reducer with an input in communication with said tap that is with the tank or cylinder and a outlet for the 0 gas at a reduced pressure in communication as a fluid with said solenoid valve. Brief Description of the Drawings
The invention will however be illustrated in the continuation of this description made in reference to the enclosed indicative and not limiting drawings, in which:
Fig. 1 shows a cross-section of the multi-valve set in a plane containing a solenoid valve, tap and pressure reducer;
Fig. 2 shows a cross-section of the multi-valve in the direction of arrows A-A in Fig. 1 : Fig. 3 shows another cross-section of the multi-valve in the direction of arrows B-B in Fig. 1 :
Fig. 4 shows a detail of an anti-frost system associated with the pressure reducer;
Fig. 5 shows a cross section of the multi-valve set with its components in a different layout;
Fig. 6 shows a cross-section according to arrows C-C in Fig. 1 ; and
Fig. 7 shows a cross-section of the multi-valve set with the solenoid valve and pressure reducer placed alongside each other. Detailed Description of the Invention As shown, the multi-valve comprises a valve body 11 having a base section 12 which is fixed to a gas tank or cylinder - not shown. The body 11 has an inlet passage for the gas 13, an outlet passage for the gas 14 towards a user unit according to arrow U, and forms a seat for a normal manual tap 15, a seat for a solenoid valve 16 and a seat for a pressure reducer 17, plus some housings for safety accessories such as a thermal fusible pellet safety switch 19, a pressure and/or temperature sensor 20 and a membrane device 21 against excessive pressure. The set can furthermore, include an overpressure valve 18 directly associated with the pressure reducer 17 as shown in Fig. 1 or positioned at a distance from the reducer on a transit passage of the gas
towards the solenoid valve 16, that is to say, downstream of the pressure reducer as shown in Figs. 5 and 7.
The inlet passage 13 can be connected to a gas supply source according to arrows E in Fig. 1 and is provided with a no-return valve 13'. The tap 15 can be the screw - Fig. 1- or the ball type Figs. 5 and 7. It has a cartridge device 15' associated with a respective first valve housing 22 for manual opening and closing. In the example shown in Fig. 1 , this first housing of valve 22 is positioned along a first passage 23, or gas load passage, which leads from the tank inlet passage. More precisely, the first passage includes an initial section 23', part of the body 11 between the inlet passage 13 and the first valve housing 22, passing through a transit passage in the pressure reducer 17, and an end section 23" shaped in the base part 12 of the body 11 , from said valve housing 22 until it enters the tank through a flow access valve 24. The solenoid valve 16 has a device 16' associated with a second valve housing 25 for closing and opening it, managed by a controller. This second valve housing 25 is placed in a second duct 26, or gas feed line to the user unit, which includes an initial section 26' which leads from the outlet of the pressure reducer 17 to the second valve housing 25 and a second section 26" from said second valve housing to the output passage 14 towards the user unit, either directly, or if required, through a second reduction stage of the pressure- not shown.
The configuration of the pressure reducer 17 is well known. It can be positioned in different parts of the valve body 11 - Figs. 1, 5, 7,- always however, to be in contact, in input, with the inside of the cylinder by means of
the same load duct 23 according to arrows R and, on exit, with the valve housing 25 of the solenoid valve 16 through the initial tract 26' of the aforementioned gas delivery duct 26 to the user unit.
This initial tract 26' of the feed duct 26 can be integrated or made up of a channel 27 which extends in the tank having an anti-frost function - Figs. 4 and 6 - that is to maintain the gas flowing through at a reduced pressure, that is expanded, almost at the same temperature of the gas in the tank. Furthermore, in the valve body and more precisely in its base section a gas feed duct 23 to the safety devices 19, 21 directly from inside the tank - Fig. 3, has been machined.
In fact , when the tap 15 is in the open position of the respective valve housing 22, the gaseous fuel supplied to the input passage 13 travels along the load duct 23 and goes into the tank in the direction of arrows S- Figs. 1 and 2 - to fill it. On finishing the filling operation, the non-return valve in the input duct 13 automatically closes. Now the gaseous fuel can be used and fed to the user unit, that is the engine, passing through the pressure reducer and solenoid valve. The fuel in fact flows back through the initial duct 23 from the tank to the pressure reducer 17 where lowering of pressure is carried out. The fuel then flows from the pressure reducer output 17 to the solenoid valve 16 which by means of its opening and closing devices can manage the delivery of the fuel to the engine according to the M arrows.
It should also be observed that the pressure reducer 17 can be associated, if required, with a heating unit and the same pressure reducer can be configured and positioned on the valve body so as to be both external to, as shown in the drawings, and internal to the gas tank or cylinder.
Furthermore, the pressure reducer 17 can be positioned adjacent to the solenoid valve 16 as shown in Fig. 7, so as to be able to use, depending on the need, the heat generated by the solenoid valve bobbin as a source of heat for said pressure reducer.
Lastly, at least part of the gas duct 27, that goes from the pressure reducer 17 output to the solenoid valve 16 and which extends into the tank, may be lagged or made of a thermo insulating material so as to safeguard the valve body and relative devices from cooling caused by the expansion of the gas when its pressure is reduced.
Claims
1. Multi-valve for natural gas systems for powering vehicles, comprising a valve body (11 ) having a base section (12) which is fixed to a gas tank or cylinder, and in said body a gas inlet duct (13) connectable to a gas supply source, a gas outlet duct (14) towards the user unit and, between said inlet passage and said outlet passage, a general manual tap (15) and a solenoid valve (16) controlling at least the delivery of the gas to the user unit, plus housings for one or more safety devices, characterised by the fact that they incorporate also a pressure reducer (17) with an inlet in communication with said tap that is to say with the tank or cylinder and a reduced pressure gas outlet in fluid communication with said solenoid valve.
2. Multi-valve for natural gas systems for powering vehicles according to claim 1 , in which the pressure reducer (17) is positioned in a housing provided in said body along a duct which extends from the input passage connectable to the supply source inside the tank through the tap and in fluid communication with the inlet of the solenoid valve through an anti-frost duct (27) which extends inside the tank.
3. Multi-valve for natural gas systems for powering vehicles according to claim 2, in which said duct (27) is lagged for thermal insulation.
4. Multi-valve for natural gas systems for powering vehicles according to claim 2, in which said duct (27) is made of a thermo insulating material
5. Multi-valve for natural gas systems for powering vehicles according to any of the previous claims, in which the pressure reducer is associated with a valve body so as to be on the outside of the gas tank.
6. Multi-valve for natural gas systems for powering vehicles according to claims 1-4, in which the pressure reducer is associated with a valve body so as to be on the inside the gas tank.
7. Multi-valve for natural gas systems for powering vehicles according to any of the previous claims, in which the pressure reducer can be equipped with a heating element.
8. Multi-valve for natural gas systems for powering vehicles according to any of the previous claims, in which the pressure reducer (17) is positioned adjacent to the solenoid valve (16).
9. Multi-valve for natural gas systems for powering vehicles according to claim 8, in which the pressure reducer (17) has a heating system fed by the heat produced by the electric winding of said solenoid.
10. Multi-valve for natural gas systems for powering vehicles according to any of the previous claims, also comprising an overpressure valve directly associated with the pressure reducer.
11. Multi-valve for natural gas systems for powering vehicles according to any of the claims 1-9, also comprising an overpressure valve positioned downstream of the pressure reducer, between the latter arid the solenoid valve inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IT2005/000513 WO2007029273A1 (en) | 2005-09-07 | 2005-09-07 | Multi-valve with a gas pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IT2005/000513 WO2007029273A1 (en) | 2005-09-07 | 2005-09-07 | Multi-valve with a gas pressure reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007029273A1 true WO2007029273A1 (en) | 2007-03-15 |
Family
ID=36264037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2005/000513 WO2007029273A1 (en) | 2005-09-07 | 2005-09-07 | Multi-valve with a gas pressure reducer |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2007029273A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2985783A1 (en) * | 2012-01-12 | 2013-07-19 | Cahouet | Valve pressure reducing device for vehicle i.e. motor vehicle, has low pressure circuit connected to output of gas regulator and provided with connecting unit for connecting to external circuit |
| CN103398289A (en) * | 2013-08-07 | 2013-11-20 | 北京天海工业有限公司 | Multifunctional valve box |
| WO2017190924A1 (en) * | 2016-05-04 | 2017-11-09 | Robert Bosch Gmbh | Device for metering a gaseous fuel to an injector |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6041762A (en) * | 1996-08-16 | 2000-03-28 | Impco Technologies, Inc. | Control module for natural gas fuel supply for a vehicle |
| US6142128A (en) * | 1997-10-20 | 2000-11-07 | Emer S.R.L. | Means for controlling the delivery of gas in self-propulsion gas systems |
| US20020083932A1 (en) * | 2000-12-11 | 2002-07-04 | Kazuki Ishikawa | Vehicle gaseous fuel supply system |
-
2005
- 2005-09-07 WO PCT/IT2005/000513 patent/WO2007029273A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6041762A (en) * | 1996-08-16 | 2000-03-28 | Impco Technologies, Inc. | Control module for natural gas fuel supply for a vehicle |
| US6142128A (en) * | 1997-10-20 | 2000-11-07 | Emer S.R.L. | Means for controlling the delivery of gas in self-propulsion gas systems |
| US20020083932A1 (en) * | 2000-12-11 | 2002-07-04 | Kazuki Ishikawa | Vehicle gaseous fuel supply system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2985783A1 (en) * | 2012-01-12 | 2013-07-19 | Cahouet | Valve pressure reducing device for vehicle i.e. motor vehicle, has low pressure circuit connected to output of gas regulator and provided with connecting unit for connecting to external circuit |
| CN103398289A (en) * | 2013-08-07 | 2013-11-20 | 北京天海工业有限公司 | Multifunctional valve box |
| WO2017190924A1 (en) * | 2016-05-04 | 2017-11-09 | Robert Bosch Gmbh | Device for metering a gaseous fuel to an injector |
| CN109072819A (en) * | 2016-05-04 | 2018-12-21 | 罗伯特·博世有限公司 | For the device by fuel gas dosage to injector |
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