CA2028754A1 - High performance valve - Google Patents
High performance valveInfo
- Publication number
- CA2028754A1 CA2028754A1 CA 2028754 CA2028754A CA2028754A1 CA 2028754 A1 CA2028754 A1 CA 2028754A1 CA 2028754 CA2028754 CA 2028754 CA 2028754 A CA2028754 A CA 2028754A CA 2028754 A1 CA2028754 A1 CA 2028754A1
- Authority
- CA
- Canada
- Prior art keywords
- valve
- main body
- stem
- ball
- hub
- 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.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0626—Easy mounting or dismounting means
- F16K5/0642—Easy mounting or dismounting means the spherical plug being insertable from one and only one side of the housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
A B S T R A C T
A ball valve is disclosed having the characteristics of good sealing integrity throughout the thermal and mechanical stress of high pressure liquid flow. The valve main body (12) has a ball (16) with ring seat (18) and rotating stem (24) mounted therein and defining a linear control passage (14) therethrough. An integral hub (32) with proboscis member (34) and cooperating linear passage (38) is mounted in sealed interface on one side of main body (12) with a clamping device (36) circumferentially securing hub (32) and main body (12) together.
A ball valve is disclosed having the characteristics of good sealing integrity throughout the thermal and mechanical stress of high pressure liquid flow. The valve main body (12) has a ball (16) with ring seat (18) and rotating stem (24) mounted therein and defining a linear control passage (14) therethrough. An integral hub (32) with proboscis member (34) and cooperating linear passage (38) is mounted in sealed interface on one side of main body (12) with a clamping device (36) circumferentially securing hub (32) and main body (12) together.
Description
287~4 HIGH PERFORMANCE VALVE
This invention relates to ball valves for relatively high pressure liquid flow. More particularly, it relates to ball valves having improved sealing integrity throughout the thermal and mechanical stress loads exhibited by such valves during high pressure liquid flow.
Conventional high performance ball valves utilize a flanged body connection which is held together by means of studs and nuts secured parallel to the flow direction. Such designs fail to demonstrate satisfactory performance during high thermal and mechanical load. Furthermore, the integrity of the packaging seal is often unsatisfactory due o the unequal distribution of force against the packing itself.
In United States Patent 3,977,707 of Oliver issued August 31, 1978, a ball valve is described having a pair of pivotabIe tubular members which permit the inlet and out ends of the valve to be pivoted in angular relationship to each other. This valve was found to be particularly suitable for ~ .:
drilling operations where it is necessary to avoid undue stress on the valve joint from the riser pipe. While ball valves of --this type may be useful for the particular drilling operations .. . ..:
described in this reference, such valve would not be suitable ~ ~
for operation under the high pressure fluid flow utility ~;
described in t:his application.
British Patent 1,066,089 published April 19, 1987 discloses a s,ealing ring for engaging the flared surfaces of -::
annular part; of a valve. The flared surfaces as sealed`;;~;~
: ~ :
This invention relates to ball valves for relatively high pressure liquid flow. More particularly, it relates to ball valves having improved sealing integrity throughout the thermal and mechanical stress loads exhibited by such valves during high pressure liquid flow.
Conventional high performance ball valves utilize a flanged body connection which is held together by means of studs and nuts secured parallel to the flow direction. Such designs fail to demonstrate satisfactory performance during high thermal and mechanical load. Furthermore, the integrity of the packaging seal is often unsatisfactory due o the unequal distribution of force against the packing itself.
In United States Patent 3,977,707 of Oliver issued August 31, 1978, a ball valve is described having a pair of pivotabIe tubular members which permit the inlet and out ends of the valve to be pivoted in angular relationship to each other. This valve was found to be particularly suitable for ~ .:
drilling operations where it is necessary to avoid undue stress on the valve joint from the riser pipe. While ball valves of --this type may be useful for the particular drilling operations .. . ..:
described in this reference, such valve would not be suitable ~ ~
for operation under the high pressure fluid flow utility ~;
described in t:his application.
British Patent 1,066,089 published April 19, 1987 discloses a s,ealing ring for engaging the flared surfaces of -::
annular part; of a valve. The flared surfaces as sealed`;;~;~
: ~ :
2~87~4 together by securing a unique elastic steel sealing ring between the flanged ends of the valve parts and this is held together by a conventional seal:ing clamp. This re~erence does not allow for the insertion of an integral hub connected at one end of the main body and held in tight sealing alignment by means of circumferentially secured clamps. The clamping means disclosed in the British reference would not be capable of withstanding the high fluid pressures of ball valve of the present application.
The present invention utilizes a unique combination of a clamp type connector, together with an integral (i.e. one piece) hub and cylindrical proboscis which axially penetrates the body bore. The subject proboscis has a predetermined and finitely calculated dimensional interface with the internal bore diameter of the main body segment, such that when radial stress loads are generated from service conditions, (i.e.
thermal and mechanical cyclic loads), the resultant forces make initial surface contact with the thick wall (i.e. major mass) portion of the body, as opposed to the centre of the studded flanged connection, as in the case of the conventional high performance ball valve.
The ball valve of this invention is characterized in having a main body with an axial passage therethrough; a ball snd ring seat mounting positioned within said main body, with a cooperating central opening therethrough and a valve stem mounted perpendicular to said axial passage for engaging said ~ .:
r ~ ~
~i.. : ' 2~2~
ball and rotating said central opening relative to said axial passage;
an integral hub including a proboscis member secured at one end of said main body with a central passage therethrough defining a portion of said axial passage; a shoulder portion defining a portion of said axial passage; a shoulder portion on said proboscls interfacing with a cooperating ledge on said main body and a seal means between said shoulder and ledge for maintaining the sealing integrity of the valve during passage of high pressure fluid therethrough; said seal means being ;~sp~ced from said valve stem and ball and seat mounting, and a clamping means for circum~erentially securing said body member and hub member.
~. :.,~.,:
In the Drawings:
~ Figure I is a partial cross-sectional side view of the ; ball valve with a portion of the clamping means shown in broken illustration~
Fiqure 2 is a cross-sectional view of a portion of the valve of Figure 1; and Figure 3 is a cross-sectional longitudinal view of the valve stem, packing gland and retaining meansO
In Figure 1, a ball valve 10 is shown in cross-section, having a main body 12 with an axial passage 14 therethrough.
The valve includes a centrally positioned ball 16 fitted within a ring seat mounting 18. The ball and mounting have a central opening 20 which is coextensive with passage 14. A ring 2~7~
gasket 22, which is positioned within a recess between seat mounting 18 and the main body 12 prevents fluid leakage from passage 14.
A valve stem 24 is mounted in main body 12 perpendicular to the direction of passage 14 within a transverse passage 25 in said body, and is mechanically connected at its lower end to ball 16 so that by rotating stem 24 about its axis, ball 16 fluid flow through opening 20 is disrupted. Stem 24 includes a shoulder portion 26 adjacent main body ledge 28 with a sealing ring 30 therebetwean for inhibiting leakage through passage 25.
stem 24 is sealed at its upper end by means of a packing glad 50 which will be described below.
An integral hub 32 including a proboscis member 34 is joined at one end to main body 12 and secured by means of a clamping device 36 around the entire joint, thereby providing reinforcement during high pressure operations. Proboscis member 34 has a central passage 38 therethrough which is integral with axial passage 14~ Proboscis 34 has a shoulder portion 40 which interfaces with a cooperating ledge 42 on the main body and has a sealing maans 44 for inhibiting leakage in the area between hub 32 and main body 12.
In the embodiment shown in Figure 1, the lower end of transverse passage 25 is closed off by means of a closure nut 46 and packing 48 in a manner well known in the art.
~ he integrity of the sealing means of the present valve is precalculated on the basis of certain dimensions which are '` :' : ' ', ,,, ., :,. . .
--` 21~2~7~
illustrated in Fig~re 2, in accordance with the following formulae;
AMI~
B~ mA..t /~
. = F ~Y~f A = Distance from centerline of stem bore to body se t shoulder B = Distance from body seat contact surface to the code pressure containment diameter C = Distance from body hub face to the body seal contact sur~ace ~= Stem bore maximum wetted diameter ~= Code pressure containment thickness for the stem bore maximum wetted diameter ", . ' : ~ = Bottom body access maximum wetted diameter .
: ~ Code prsqsure containment thickness for the bottom body access :~
maximum wetted diameter = Body seal contact diamster . -~
~'~o~ Body bore code wall thickne~s .-. ~:
= Distance from hub face to bac~ side of hub _ Hub clamp clearance distance ::~
= AngLe between body minor and major diameter on the clamp side of the body 2~28 7 ~ 4 The upper end of transverse passage 25 is closed off by stem packing gland 50 which is illustrated in end view in Figure 3. A stem hub 52 is centered around stem 24 and positioned in a recess within body 12 for securing valve packing 54 therebetween. A retaining plate 56 is positioned on stem 24 and sits on hub seat 58. A pair of retaining bolts 60a and 60b are fixed at their lower end to body 12 and includes tightening nuts 62a and 62b and corresponding pairs of opposed, concavo-convex resilient lock washers 64a and 64b. As the nuts and washers are tightened into position, plate 56 is forced down on hub seat 58 to provide a downward force on valve packing 54. Should one of the nuts be tightened unevenly with respect to the other, the resilient lock washers compensate, to provide equal downward force against retaining plate 56 and thereby serves to avoid unevenness of downward pressure against the packing that should result in fluid leakage through the weaker stress point.
It can be noted that in this invention, any diameter of hub proboscis or any desired surface contact pressure can be provided for, thereby eliminating the necessity of trial and error in providing effective body connection sealing under significant radial and axial loads. In this respect, the disclosed valve exhibits maximum versatility in service conditions.
" .. , . ,. " ,
The present invention utilizes a unique combination of a clamp type connector, together with an integral (i.e. one piece) hub and cylindrical proboscis which axially penetrates the body bore. The subject proboscis has a predetermined and finitely calculated dimensional interface with the internal bore diameter of the main body segment, such that when radial stress loads are generated from service conditions, (i.e.
thermal and mechanical cyclic loads), the resultant forces make initial surface contact with the thick wall (i.e. major mass) portion of the body, as opposed to the centre of the studded flanged connection, as in the case of the conventional high performance ball valve.
The ball valve of this invention is characterized in having a main body with an axial passage therethrough; a ball snd ring seat mounting positioned within said main body, with a cooperating central opening therethrough and a valve stem mounted perpendicular to said axial passage for engaging said ~ .:
r ~ ~
~i.. : ' 2~2~
ball and rotating said central opening relative to said axial passage;
an integral hub including a proboscis member secured at one end of said main body with a central passage therethrough defining a portion of said axial passage; a shoulder portion defining a portion of said axial passage; a shoulder portion on said proboscls interfacing with a cooperating ledge on said main body and a seal means between said shoulder and ledge for maintaining the sealing integrity of the valve during passage of high pressure fluid therethrough; said seal means being ;~sp~ced from said valve stem and ball and seat mounting, and a clamping means for circum~erentially securing said body member and hub member.
~. :.,~.,:
In the Drawings:
~ Figure I is a partial cross-sectional side view of the ; ball valve with a portion of the clamping means shown in broken illustration~
Fiqure 2 is a cross-sectional view of a portion of the valve of Figure 1; and Figure 3 is a cross-sectional longitudinal view of the valve stem, packing gland and retaining meansO
In Figure 1, a ball valve 10 is shown in cross-section, having a main body 12 with an axial passage 14 therethrough.
The valve includes a centrally positioned ball 16 fitted within a ring seat mounting 18. The ball and mounting have a central opening 20 which is coextensive with passage 14. A ring 2~7~
gasket 22, which is positioned within a recess between seat mounting 18 and the main body 12 prevents fluid leakage from passage 14.
A valve stem 24 is mounted in main body 12 perpendicular to the direction of passage 14 within a transverse passage 25 in said body, and is mechanically connected at its lower end to ball 16 so that by rotating stem 24 about its axis, ball 16 fluid flow through opening 20 is disrupted. Stem 24 includes a shoulder portion 26 adjacent main body ledge 28 with a sealing ring 30 therebetwean for inhibiting leakage through passage 25.
stem 24 is sealed at its upper end by means of a packing glad 50 which will be described below.
An integral hub 32 including a proboscis member 34 is joined at one end to main body 12 and secured by means of a clamping device 36 around the entire joint, thereby providing reinforcement during high pressure operations. Proboscis member 34 has a central passage 38 therethrough which is integral with axial passage 14~ Proboscis 34 has a shoulder portion 40 which interfaces with a cooperating ledge 42 on the main body and has a sealing maans 44 for inhibiting leakage in the area between hub 32 and main body 12.
In the embodiment shown in Figure 1, the lower end of transverse passage 25 is closed off by means of a closure nut 46 and packing 48 in a manner well known in the art.
~ he integrity of the sealing means of the present valve is precalculated on the basis of certain dimensions which are '` :' : ' ', ,,, ., :,. . .
--` 21~2~7~
illustrated in Fig~re 2, in accordance with the following formulae;
AMI~
B~ mA..t /~
. = F ~Y~f A = Distance from centerline of stem bore to body se t shoulder B = Distance from body seat contact surface to the code pressure containment diameter C = Distance from body hub face to the body seal contact sur~ace ~= Stem bore maximum wetted diameter ~= Code pressure containment thickness for the stem bore maximum wetted diameter ", . ' : ~ = Bottom body access maximum wetted diameter .
: ~ Code prsqsure containment thickness for the bottom body access :~
maximum wetted diameter = Body seal contact diamster . -~
~'~o~ Body bore code wall thickne~s .-. ~:
= Distance from hub face to bac~ side of hub _ Hub clamp clearance distance ::~
= AngLe between body minor and major diameter on the clamp side of the body 2~28 7 ~ 4 The upper end of transverse passage 25 is closed off by stem packing gland 50 which is illustrated in end view in Figure 3. A stem hub 52 is centered around stem 24 and positioned in a recess within body 12 for securing valve packing 54 therebetween. A retaining plate 56 is positioned on stem 24 and sits on hub seat 58. A pair of retaining bolts 60a and 60b are fixed at their lower end to body 12 and includes tightening nuts 62a and 62b and corresponding pairs of opposed, concavo-convex resilient lock washers 64a and 64b. As the nuts and washers are tightened into position, plate 56 is forced down on hub seat 58 to provide a downward force on valve packing 54. Should one of the nuts be tightened unevenly with respect to the other, the resilient lock washers compensate, to provide equal downward force against retaining plate 56 and thereby serves to avoid unevenness of downward pressure against the packing that should result in fluid leakage through the weaker stress point.
It can be noted that in this invention, any diameter of hub proboscis or any desired surface contact pressure can be provided for, thereby eliminating the necessity of trial and error in providing effective body connection sealing under significant radial and axial loads. In this respect, the disclosed valve exhibits maximum versatility in service conditions.
" .. , . ,. " ,
Claims (4)
1. A ball valve characterized in having a main body with an axial passage therethrough; a ball and ring seat mounting positioned within said main body with a cooperating central opening therethrough and a valve stem mounted perpendicular to said axial passage for engaging said ball and rotating said central opening relative to said axial passage;
an integral hub including a proboscis member secured at one end of said main body with a central passage therethrough defining a portion of said axial passage, a shoulder portion on said proboscis interfacing with a cooperating ledge on said main body and a seal means between said should and ledge for maintaining the sealing integrity of the valve during passage of high pressure fluid therethrough;
said seal means being spaced from said valve stem and ball and seat mounting; and, a clamping means for circumfernetially securing said body member and hub member.
an integral hub including a proboscis member secured at one end of said main body with a central passage therethrough defining a portion of said axial passage, a shoulder portion on said proboscis interfacing with a cooperating ledge on said main body and a seal means between said should and ledge for maintaining the sealing integrity of the valve during passage of high pressure fluid therethrough;
said seal means being spaced from said valve stem and ball and seat mounting; and, a clamping means for circumfernetially securing said body member and hub member.
2. A ball valve as claim in claim 1 which further comprises a packing gland including a stem hub between the valve stem and main body for securing a valve packing therebetween, and a retaining plate around said stem and positioned on said stem hub, said plate being secured to said main body by a pair of bolts on opposite side of said stem and perpendicular thereto for directing a downward axial force on said stem hub.
3. A ball valve as claimed in claim 2 wherein each of said bolts includes a resilient locking means for equalizing the downward securing force on said plate.
4. A ball valve substantially as described with particular reference to the drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8924470.1 | 1989-10-31 | ||
| GB898924470A GB8924470D0 (en) | 1989-10-31 | 1989-10-31 | High performance valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2028754A1 true CA2028754A1 (en) | 1991-05-01 |
Family
ID=10665449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2028754 Abandoned CA2028754A1 (en) | 1989-10-31 | 1990-10-29 | High performance valve |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2028754A1 (en) |
| GB (2) | GB8924470D0 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2289744B (en) * | 1994-05-19 | 1998-04-22 | Fort Vale Eng Ltd | Valve assembly |
| EP2609350B1 (en) * | 2010-08-25 | 2017-10-04 | Ham-Let (Israel-Canada) Ltd. | A metering ball valve |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT272779B (en) * | 1966-09-05 | 1969-07-25 | Istag A G Suhr Ag | Cock with ball plug |
| JPS539951Y2 (en) * | 1974-08-24 | 1978-03-16 | ||
| US4260131A (en) * | 1978-09-27 | 1981-04-07 | Kamyr Valves, Inc. | Low and high operating temperatures valve |
| FR2482696B1 (en) * | 1980-05-13 | 1985-09-20 | Staubli Sa Ets | IMPROVEMENTS ON SAFETY VALVE CONNECTIONS |
| US4660591A (en) * | 1986-06-26 | 1987-04-28 | Whitey Co. | Ball valve and seat assembly |
-
1989
- 1989-10-31 GB GB898924470A patent/GB8924470D0/en active Pending
-
1990
- 1990-10-29 CA CA 2028754 patent/CA2028754A1/en not_active Abandoned
- 1990-10-31 GB GB9023681A patent/GB2238094A/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB8924470D0 (en) | 1989-12-20 |
| GB9023681D0 (en) | 1990-12-12 |
| GB2238094A (en) | 1991-05-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |