CA2297079C - High pressure filling nozzle - Google Patents
High pressure filling nozzle Download PDFInfo
- Publication number
- CA2297079C CA2297079C CA002297079A CA2297079A CA2297079C CA 2297079 C CA2297079 C CA 2297079C CA 002297079 A CA002297079 A CA 002297079A CA 2297079 A CA2297079 A CA 2297079A CA 2297079 C CA2297079 C CA 2297079C
- Authority
- CA
- Canada
- Prior art keywords
- fluid
- nozzle
- piston
- high pressure
- inlet
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Supply Of Fluid Materials To The Packaging Location (AREA)
- Nozzles (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
A fluid nozzle (1) for dispensing high pressure fluids includes an outer sleeve, a nozzle inlet (3) for receiving a high pressure fluid and a nozzle outlet (4) for discharging the high pressure fluid, an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet, a valve biased to close the fluid flow passage through the inner pipe, a piston (6), and a plurality of radially movable connecting jaws (5) positioned about the periphery of the outlet (4). The connecting jaws (5) have first ends engagin g the piston (6) and second ends for engaging an inlet of a fluid receptacle (2). In the connected position, the pressure exerted by the fluid causes the connecting jaws (5), the piston (6), and the inner pipe to move axially relative to the outer sleeve and in turn causes the valve to open, permittin g passage of the high pressure fluid through the nozzle.
Description
HIGH PRESSURE FILLING NOZZLE
BACKGROUND OF THE INVENTION
Field of the invention This invention relates to a high pressure filling nozzle. In particular, the invention relates to a nozzle which provides a sealed connection to an inlet of a receptacle for filling the receptacle.
SUMMARY OF THE INVENTION
It is an object of an aspect of the invention to provide a nozzle which can quickly, easily, and safely create a sealed connection to an inlet of a receptacle for filling the receptacle with the high pressure fluid.
In accordance with one embodiment of the present invention, a fluid dispensing nozzle, comprises:
an outer sleeve, a nozzle inlet for receiving a high pressure fluid and a nozzle outlet for discharging the high pressure fluid;
an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet;
a valve biased to close the fluid flow passage through the inner pipe;
a piston; and a plurality of radially movable connecting jaws positioned about the periphery of the outlet, the connecting jaws having first ends engaging the piston and second ends for engaging an inlet of a receptacle in which fluid is to be dispensed, wherein the connecting jaws, the piston and the inner pipe, are axially movable relative to the outer sleeve, and wherein the piston is actuated by the pressure exerted by the high pressure fluid to open the valve and permit passage of high pressure fluid through the nozzle.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be more clearly understood, the preferred embodiment thereof will now be described in detail by way of example, with reference to the accompanying drawings, in which:
Fig. 1 is a cross-sectional view of a preferred embodiment of the invention in a disengaged position;
Fig. 2 is a cross-sectional view of the preferred embodiment in a partially engaged position;
Fig. 3 is a cross-sectional view of the preferred embodiment connected to a receptacle;
Fig. 4 is a cross-sectional view of the preferred embodiment connected to a receptacle;
Fig. 5 is a cross-sectional view of the preferred embodiment connected to a receptacle in a valve open position;
1a WO 99/61835 PCTlUS99/11323 Fig. 6 is a cross-sectional view of the preferred embodiment connected to a receptacle commencing disengagement;
Fig. 7 is a cross-sectional view of the preferred embodiment in a disengaged position;
Fig. 8 is a cross-sectional view of the preferred embodiment in the engaged position s without a receptacle;
Fig. 9 is a cross-sectional view of the preferred embodiment perpendicular to the cross-sectional views of Figs. 1-8.
DESCRIPTION OF THE pRFFFRRF MBODIM NT
to According to the present invention, there is provided a fluid nozzle for dispensing high presstu~e fluids comprising an outer sleeve, a nozzle inlet for receiving a high pressure fluid and a nozzle outlet for discharging the high pressure fluid, an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet, a valve biased to close the fluid flow passage through the inner pipe, a.piston, and a plurality of radially movable connecting jaws positioned about the 15 periphery of the outlet. The connecting jaws have first ends engaging the piston and second ends for engaging an inlet of a fluid receptacle. In the connected position, the pressure exerted by the fluid causes the connecting jaws, the piston, and the inner pipe to move axially relative to the outer sleeve and in turn causes the valve to open, permitting passage of the high pressure fluid through the nozzle.
2o In accordance with another feature of the invention, the valve of is arranged in an inlet cavity.
In accordance with another aspect of the invention, the connecting jaws extend in an axial direction beyond the nozzle outlet and are radially movable inwardly to securely attach and seal the nozzle outlet with a receptacle inlet. Further, a control ring is arranged adjacent the connecting jaws and is axially movable relative thereto. The axial movement of the control ring allows radial movement of the connecting jaws.
In accordance with another aspect of the invention, the piston is arranged in a piston s cavity. This cavity is capable of being in fluid communication with the inlet cavity. Further, the valve is biased to close the fluid flow passage through the inner pipe by the pressure of a high pressure fluid in the inlet cavity. The area of the piston cavity on which the high pressure fluid acts is'larger than the area on which high pressure fluid acts to bias the valve closed.
Further features of the invention are found in providing a nozzle housing having a bore 1 o therein, a pin connected to the outer sleeve and received in the bore, and a channel in the pin which is in fluid communication with the piston cavity. The housing is axially movable with respect to the outer sleeve in order to position the pin channel in fluid communication with the inlet cavity.
Referring now to the drawings in detail, wherein like numerals indicate the same elements 15 throughout the views, Fig. 1 shows a filling nozzle 1 in the disconnected position, and a corresponding receptacle inlet 2 sealably connected to any suitable receptacle (not shown), such as, for example, a fuel tank of a gaseous fuel vehicle. The filling nozzle is connected to a supply of high pressure fluid (not shown). The nozzle has a nozzle inlet 3 for the high pressure fluid and an outlet 4, which seals against the inlet 2 of the receptacle to fill the receptacle. A plurality of 2o connecting jaws 5 are connected to a piston 6. The jaws are positioned around the periphery of the outlet 4 and are radially movable. High pressure fluid occupies the inlet cavity 7.
As shown in Fig. 2, the filling nozzle is connected to the receptacle inlet 2 by pressing the receptacle inlet against the control ring 11 and sliding a retaining ring 12 projecting axially from the outlet end of the outer sleeve 10 toward the receptacle.
As shown in Fig. 3, the receptacle inlet 2 pushes against the control ring 11, compressing the control ring against the control spring 20. The movement of the outer sleeve toward the receptacle causes the retaining ring 12 to push the jaws 5 radially inward to securely attach and seal the nozzle to the receptacle inlet. A seal 21 provides a gas-tight connection between the nozzle outlet 4 and receptacle inlet.
Fig. 4 shows the outer sleeve 10 abutting the nozzle housing 30. The sleeve is prevented from moving any relative to the housing. A first pin 31 and second pin 32 project axially from the end of the outer sleeve. The first and second pins are received in a corresponding first bore 33 and second bore 34, respectively. A first groove 35 is defined in the first pin 31. In the connected position shown in Fig. 4, the first groove is in fluid communication with a radial channel 36 which in turn is in fluid communication with the inlet cavity 7.
The first groove 35 permits the high pressure fluid to communicate with a first drilling (only the entry point is shown). The drilling is in fluid communication with a piston cavity 38. Accordingly, the high pressure fluid travels through the first drilling 37 to occupy the piston cavity 38.
The high pressure fluid acting on an area of the piston results in a force which is greater than the combined forces of the high pressure acting on the valve 39, the valve spring 40, and the piston spring 41. Accordingly, the force generated by the high pressure fluid in the piston cavity moves the piston 6, jaws 5, and main pipe 43 to the right toward the nozzle inlet 3 relative to the remainder of the nozzle. This in turn causes the valve 39 to open and the high pressure fluid to travel through the main pipe 43 to the receptacle inlet 2, as shown in Fig.
5.
After the filling of the receptacle is complete, the nozzle can be disengaged by sliding the sleeve 10 away from the receptacle inlet 2, as shown in Fig. 6. The equilization of the pressure 4a between the inlet cavity 7 and the piston cavity 38 permits easy disengagement of the nozzle. The sliding of the sleeve acts to withdraw the first pin 31 and second pin 32 from the first bore 33 and second bore 34, respectively. A second groove 60 defined in second pin 32. The second groove is brought into fluid communication with a second drilling 61 (only exit point shown) in fluid s communication with the piston cavity 38. The high pressure fluid from piston cavity 38 vents through the second drilling 61 and second groove 60 out to atmosphere through a vent channel 90 (shown in Fig. 9). The high pressure fluid in the inlet cavity 7 causes the valve 39 to close by reversing the movement of the parts described in Fig. 5.
Fig. 7 (identical to Fig. 1 ) shows the nozzle disengaged from the receptacle inlet 2. The 1 o sliding of the sleeve 10 away from the receptacle causes the retaining ring 12 to release to release the jaws 5. The nozzle can be then be withdrawn from the receptacle inlet.
Fig. 8 shows a safety feature of the nozzle 1 in the event that a user attempts to dispense the high pressure fluid without coupling the nozzle to the receptacle inlet 2.
In this position, the high pressure fluid fills the piston cavity 38, as described above. Although the piston 42 and the t s' jaws 5 move relative to the rest of the nozzle, as described above, the main pipe 43 does not move because the jaws are not secured to the receptacle inlet 2. Accordingly, the valve cannot be open to permit flow of the high pressure fluid through the nozzle.
It will be appreciated that the above description relates to the preferred embodiment by way of example only. Many variations on the invention will be obvious to those knowledgeable in the field, and such obvious variations are within the scope of the invention as described and claimed, whether or not expressly described.
BACKGROUND OF THE INVENTION
Field of the invention This invention relates to a high pressure filling nozzle. In particular, the invention relates to a nozzle which provides a sealed connection to an inlet of a receptacle for filling the receptacle.
SUMMARY OF THE INVENTION
It is an object of an aspect of the invention to provide a nozzle which can quickly, easily, and safely create a sealed connection to an inlet of a receptacle for filling the receptacle with the high pressure fluid.
In accordance with one embodiment of the present invention, a fluid dispensing nozzle, comprises:
an outer sleeve, a nozzle inlet for receiving a high pressure fluid and a nozzle outlet for discharging the high pressure fluid;
an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet;
a valve biased to close the fluid flow passage through the inner pipe;
a piston; and a plurality of radially movable connecting jaws positioned about the periphery of the outlet, the connecting jaws having first ends engaging the piston and second ends for engaging an inlet of a receptacle in which fluid is to be dispensed, wherein the connecting jaws, the piston and the inner pipe, are axially movable relative to the outer sleeve, and wherein the piston is actuated by the pressure exerted by the high pressure fluid to open the valve and permit passage of high pressure fluid through the nozzle.
BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be more clearly understood, the preferred embodiment thereof will now be described in detail by way of example, with reference to the accompanying drawings, in which:
Fig. 1 is a cross-sectional view of a preferred embodiment of the invention in a disengaged position;
Fig. 2 is a cross-sectional view of the preferred embodiment in a partially engaged position;
Fig. 3 is a cross-sectional view of the preferred embodiment connected to a receptacle;
Fig. 4 is a cross-sectional view of the preferred embodiment connected to a receptacle;
Fig. 5 is a cross-sectional view of the preferred embodiment connected to a receptacle in a valve open position;
1a WO 99/61835 PCTlUS99/11323 Fig. 6 is a cross-sectional view of the preferred embodiment connected to a receptacle commencing disengagement;
Fig. 7 is a cross-sectional view of the preferred embodiment in a disengaged position;
Fig. 8 is a cross-sectional view of the preferred embodiment in the engaged position s without a receptacle;
Fig. 9 is a cross-sectional view of the preferred embodiment perpendicular to the cross-sectional views of Figs. 1-8.
DESCRIPTION OF THE pRFFFRRF MBODIM NT
to According to the present invention, there is provided a fluid nozzle for dispensing high presstu~e fluids comprising an outer sleeve, a nozzle inlet for receiving a high pressure fluid and a nozzle outlet for discharging the high pressure fluid, an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet, a valve biased to close the fluid flow passage through the inner pipe, a.piston, and a plurality of radially movable connecting jaws positioned about the 15 periphery of the outlet. The connecting jaws have first ends engaging the piston and second ends for engaging an inlet of a fluid receptacle. In the connected position, the pressure exerted by the fluid causes the connecting jaws, the piston, and the inner pipe to move axially relative to the outer sleeve and in turn causes the valve to open, permitting passage of the high pressure fluid through the nozzle.
2o In accordance with another feature of the invention, the valve of is arranged in an inlet cavity.
In accordance with another aspect of the invention, the connecting jaws extend in an axial direction beyond the nozzle outlet and are radially movable inwardly to securely attach and seal the nozzle outlet with a receptacle inlet. Further, a control ring is arranged adjacent the connecting jaws and is axially movable relative thereto. The axial movement of the control ring allows radial movement of the connecting jaws.
In accordance with another aspect of the invention, the piston is arranged in a piston s cavity. This cavity is capable of being in fluid communication with the inlet cavity. Further, the valve is biased to close the fluid flow passage through the inner pipe by the pressure of a high pressure fluid in the inlet cavity. The area of the piston cavity on which the high pressure fluid acts is'larger than the area on which high pressure fluid acts to bias the valve closed.
Further features of the invention are found in providing a nozzle housing having a bore 1 o therein, a pin connected to the outer sleeve and received in the bore, and a channel in the pin which is in fluid communication with the piston cavity. The housing is axially movable with respect to the outer sleeve in order to position the pin channel in fluid communication with the inlet cavity.
Referring now to the drawings in detail, wherein like numerals indicate the same elements 15 throughout the views, Fig. 1 shows a filling nozzle 1 in the disconnected position, and a corresponding receptacle inlet 2 sealably connected to any suitable receptacle (not shown), such as, for example, a fuel tank of a gaseous fuel vehicle. The filling nozzle is connected to a supply of high pressure fluid (not shown). The nozzle has a nozzle inlet 3 for the high pressure fluid and an outlet 4, which seals against the inlet 2 of the receptacle to fill the receptacle. A plurality of 2o connecting jaws 5 are connected to a piston 6. The jaws are positioned around the periphery of the outlet 4 and are radially movable. High pressure fluid occupies the inlet cavity 7.
As shown in Fig. 2, the filling nozzle is connected to the receptacle inlet 2 by pressing the receptacle inlet against the control ring 11 and sliding a retaining ring 12 projecting axially from the outlet end of the outer sleeve 10 toward the receptacle.
As shown in Fig. 3, the receptacle inlet 2 pushes against the control ring 11, compressing the control ring against the control spring 20. The movement of the outer sleeve toward the receptacle causes the retaining ring 12 to push the jaws 5 radially inward to securely attach and seal the nozzle to the receptacle inlet. A seal 21 provides a gas-tight connection between the nozzle outlet 4 and receptacle inlet.
Fig. 4 shows the outer sleeve 10 abutting the nozzle housing 30. The sleeve is prevented from moving any relative to the housing. A first pin 31 and second pin 32 project axially from the end of the outer sleeve. The first and second pins are received in a corresponding first bore 33 and second bore 34, respectively. A first groove 35 is defined in the first pin 31. In the connected position shown in Fig. 4, the first groove is in fluid communication with a radial channel 36 which in turn is in fluid communication with the inlet cavity 7.
The first groove 35 permits the high pressure fluid to communicate with a first drilling (only the entry point is shown). The drilling is in fluid communication with a piston cavity 38. Accordingly, the high pressure fluid travels through the first drilling 37 to occupy the piston cavity 38.
The high pressure fluid acting on an area of the piston results in a force which is greater than the combined forces of the high pressure acting on the valve 39, the valve spring 40, and the piston spring 41. Accordingly, the force generated by the high pressure fluid in the piston cavity moves the piston 6, jaws 5, and main pipe 43 to the right toward the nozzle inlet 3 relative to the remainder of the nozzle. This in turn causes the valve 39 to open and the high pressure fluid to travel through the main pipe 43 to the receptacle inlet 2, as shown in Fig.
5.
After the filling of the receptacle is complete, the nozzle can be disengaged by sliding the sleeve 10 away from the receptacle inlet 2, as shown in Fig. 6. The equilization of the pressure 4a between the inlet cavity 7 and the piston cavity 38 permits easy disengagement of the nozzle. The sliding of the sleeve acts to withdraw the first pin 31 and second pin 32 from the first bore 33 and second bore 34, respectively. A second groove 60 defined in second pin 32. The second groove is brought into fluid communication with a second drilling 61 (only exit point shown) in fluid s communication with the piston cavity 38. The high pressure fluid from piston cavity 38 vents through the second drilling 61 and second groove 60 out to atmosphere through a vent channel 90 (shown in Fig. 9). The high pressure fluid in the inlet cavity 7 causes the valve 39 to close by reversing the movement of the parts described in Fig. 5.
Fig. 7 (identical to Fig. 1 ) shows the nozzle disengaged from the receptacle inlet 2. The 1 o sliding of the sleeve 10 away from the receptacle causes the retaining ring 12 to release to release the jaws 5. The nozzle can be then be withdrawn from the receptacle inlet.
Fig. 8 shows a safety feature of the nozzle 1 in the event that a user attempts to dispense the high pressure fluid without coupling the nozzle to the receptacle inlet 2.
In this position, the high pressure fluid fills the piston cavity 38, as described above. Although the piston 42 and the t s' jaws 5 move relative to the rest of the nozzle, as described above, the main pipe 43 does not move because the jaws are not secured to the receptacle inlet 2. Accordingly, the valve cannot be open to permit flow of the high pressure fluid through the nozzle.
It will be appreciated that the above description relates to the preferred embodiment by way of example only. Many variations on the invention will be obvious to those knowledgeable in the field, and such obvious variations are within the scope of the invention as described and claimed, whether or not expressly described.
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A fluid dispensing nozzle, comprising:
an outer sleeve, a nozzle inlet for receiving a high pressure fluid and a nozzle outlet for discharging the high pressure fluid;
an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet;
a valve biased to close the fluid flow passage through the inner pipe;
a piston; and a plurality of radially movable connecting jaws positioned about the periphery of the outlet, the connecting jaws having first ends engaging the piston and second ends for engaging an inlet of a receptacle in which fluid is to be dispensed, wherein the connecting jaws, the piston and the inner pipe, are axially movable relative to the outer sleeve, and wherein the piston is actuated by the pressure exerted by the high pressure fluid to open the valve and permit passage of high pressure fluid through the nozzle.
an outer sleeve, a nozzle inlet for receiving a high pressure fluid and a nozzle outlet for discharging the high pressure fluid;
an inner pipe in fluid communication with the nozzle inlet and the nozzle outlet;
a valve biased to close the fluid flow passage through the inner pipe;
a piston; and a plurality of radially movable connecting jaws positioned about the periphery of the outlet, the connecting jaws having first ends engaging the piston and second ends for engaging an inlet of a receptacle in which fluid is to be dispensed, wherein the connecting jaws, the piston and the inner pipe, are axially movable relative to the outer sleeve, and wherein the piston is actuated by the pressure exerted by the high pressure fluid to open the valve and permit passage of high pressure fluid through the nozzle.
2. The fluid dispensing nozzle according to claim 1, wherein the valve is arranged in an inlet cavity.
3. The fluid dispensing nozzle according to claim 1, wherein the connecting jaws extend axially beyond the nozzle outlet and are radially movable inwardly to securely attach and seal the nozzle outlet with a receptacle inlet.
4. The fluid dispensing nozzle according to claim 3, further comprising at least one control ring arranged adjacent the connecting jaws and axially movable relative thereto, wherein axial movement of the control ring allows radial movement of the connecting jaws.
5. The fluid dispensing nozzle according to claim 1, wherein the piston is arranged in a piston cavity, and wherein the piston cavity is capable of being in fluid communication with a fluid inlet cavity.
6. The fluid dispensing nozzle according to claim 5, wherein the valve is biased to close the fluid flow passage through the inner pipe by the pressure of a high pressure fluid in the inlet cavity, and further wherein when the piston cavity is in fluid communication with the inlet cavity, the high pressure fluid acting on an area of the piston results in a force which is greater than the combined forces which act to bias the valve closed.
7. The fluid dispensing nozzle according to claim 1, further comprising a nozzle housing juxtaposed to the outer sleeve for preventing movement of the sleeve relative to the nozzle housing, wherein the nozzle housing has at least one bore therein for receiving at least one pin, whereby said at least one pin projects axially from an end of the outer sleeve, said at least one pin having at least one channel which is in fluid communication with a piston cavity.
8. The fluid dispensing nozzle according to claim 7, wherein the housing is axially movable with respect to the outer sleeve to position the pin channel in fluid communication with the inlet cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002297079A CA2297079C (en) | 1998-05-22 | 1999-05-21 | High pressure filling nozzle |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,238,590 | 1998-05-22 | ||
| CA002238590A CA2238590A1 (en) | 1998-05-22 | 1998-05-22 | High pressure filling nozzle |
| PCT/US1999/011323 WO1999061835A1 (en) | 1998-05-22 | 1999-05-21 | High pressure filling nozzle |
| CA002297079A CA2297079C (en) | 1998-05-22 | 1999-05-21 | High pressure filling nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2297079A1 CA2297079A1 (en) | 1999-12-02 |
| CA2297079C true CA2297079C (en) | 2001-10-02 |
Family
ID=25680243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002297079A Expired - Fee Related CA2297079C (en) | 1998-05-22 | 1999-05-21 | High pressure filling nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2297079C (en) |
-
1999
- 1999-05-21 CA CA002297079A patent/CA2297079C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2297079A1 (en) | 1999-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150521 |