CA2881171C - Safety lock for a gate valve - Google Patents
Safety lock for a gate valve Download PDFInfo
- Publication number
- CA2881171C CA2881171C CA2881171A CA2881171A CA2881171C CA 2881171 C CA2881171 C CA 2881171C CA 2881171 A CA2881171 A CA 2881171A CA 2881171 A CA2881171 A CA 2881171A CA 2881171 C CA2881171 C CA 2881171C
- Authority
- CA
- Canada
- Prior art keywords
- movable body
- actuator
- valve
- shroud
- safety lock
- 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.)
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
TECHNICAL FIFT
pool This relates to a safety lock for a gate valve.
BACKGROUND
SUMMARY
.. BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a safety lock installed on a capped flow line with a gate valve.
FIG. 2 is a perspective view of a safety lock with a disconnected hose.
FIG. 3 is a perspective view of a safety lock in a position that locks the canilock adjacent to the gate valve.
FIG. 4 is a side elevation view of a safety lock installed on a capped flow line adjacent to the gate valve.
FIG. 5 is a side elevation view of a safety lock with a disconnected hose adjacent to the gate valve.
FIG. 6 is a side elevation view of a safety lock in a position that locks the camlock and releases the gate valve.
FIG. 7 is a side elevation view of a safety lock in a position that releases the camlock and locks the gate valve.
FIG. 8 is a perspective view of a prior art ball valve with camlock fitting.
FIG. 9 is a perspective view of a safety lock installed on a capped flow line with a ball valve.
FIG. 10 is a persctive view of a safety lock with a disconnected hose adjacent to the ball valve.
FIG. 11 is a perspective view of a safety lock in a position that locks the ball valve as the hose is connected or disconnected.
na 12 is a perspective view of a safety lock in a position that locks the camlock and releases the ball valve.
DETAILED DESCRIVITON
12. The following embodiments will be discussed with respect to camlock connections, however, it will be understood that other hose connectors may be used to connect the flow line to the valve. The hose connector may be any type of connection suitable to connect hoses to flow lines in order to load or offload liquid.
While camlock shroud 46 is shown as a full enclosure that blocks both locking aims 28 and is positioned concentrically with camlock fitting 14, it will be undeistood that other shapes or designs may be used for camlock shroud 46. As one of the uses of shroud 46 is to remind the operator to ensure it is safe to open locking arms 28, it may be sufficient to have shroud 46 block only .. one locking arm 28. Furthermore, shroud 46 may engage any part of locking aims 28 that allows the pivoting movement to be limited, such as the ends or middle of locking aims 28.
In the depicted embodiment, shroud 46 is shown as a cylindrical sidewall concentrically positioned about camlock fitting 14. Shroud 46 is sized to block locking aims 28 and also to fit over a connection flange 50 that connects camlock fitting 14 to gate valve 12. This size of shroud 46 is necessary to ensure that shroud is able to be retracted from camlock fitting 14 in the depicted embodiment, but may not be necessaiy in all embodiments, depending on the specifications of the various components. It will be understood that there are other considerations for the size and shape of shroud 46, some of which may depend on the type of hose connector being used, if the depicted camlock connector 20 and 22 is not used. For examples, in some circumstances, and depending on the type of hose connector, shroud 46 may limit access to the hose connector by being positioned such that the hose connector is physically prevented from being disconnected, as with locking arms 28 of female camlock connector 22 described above. In other circumstances, shroud 46 may be used to limit access to the hose connector by enclosing the hose connector, extending past the hose connector, or otherwise in order to prevent or make it difficult for the user to access and operate the connector.
While some movement may be pennitted, particularly because gate valve blocking member 48 is cantilevered from movable body 32 and may be levered upward by an upward force that may be applied by actuator shaft 16. However, gate valve blocking member 48 is .. designed and positioned to prevent the gate in gate valve 12 fi-om moving from the closed position to the open position, or sufficiently to allow any significant amount of fluid flow through gate valve 12, as shown in FIG. 1 and 2. At the same time, gate valve blocking member 48 is sufficiently short to permit the free movement of actuator shaft 16 when movable body 32 is in the extended position, as shown in FIG. 3.
Handle 116 is blocked fi-om rotating by the engagement of blocking member 148 with locking plate 152.
As shown in FIG. 10, in this position cap 26 may be removed, and hose 24 may be connected, or vice versa. Referring to FIG. 11, hose 24 may, for example, be connected and camlock fitting 14 closed, or camlock fitting 14 opened and hose 24 jeujoved as the case may be. In either case, with movable body 32 retracted to allow access to camlock fitting 14, handle 116 is prevented awn being used to open ball valve 112. Referring to FIG. 12, with locking arms 28 pivoted to the closed position, movable body 32 can be moved from the retracted position to the extended position. In doing so, blocking member 148 moves out of engagement with locking plate 152, which then allows handle 116 to be pivoted to the open position. As shown, once handle 116 is in the open position, blocking member 148 will engage blocking surface 150 of locking plate 152 to prevent movable body 32 from moving to the retracted position and preventing shroud 46 from being withdrawn from locking arms 28 fiom camlock fitting 14.
Blocking member 148 may be a pin that engages blocking surface 150. Plate 148 may be shaped such that it directly engages movable body 32 when handle 116 is horizontal, and to disengage from movable body 32 when handle 116 is vertical.
Claims (30)
an anchor that is in a fixed position relative to the valve;
a movable body movably attached to the anchor, the anchor permitting lateral movement of the movable body in an axial direction of the flow line between a first position and a second position;
a shroud and an actuator blocking member carried by and movable laterally with the movable body, wherein:
the shroud is sized and positioned on the movable body to limit access to the hose connector when the movable body is in the first position and to permit access to the hose connector when the movable body is in the second position; and the actuator blocking member is sized and positioned on the movable body to prevent the actuator from moving from the second position to the first position when the movable body is in the second position, and to remit movement of the actuator when the movable body is in the first position.
a hose connector connected to a flow line;
a valve connected to the flow line adjacent to the hose connector, the valve comprising an actuator that moves between a first position when the valve is in an open position and a second position when the valve is in a closed position;
a safety lock comprising an anchor that is in a fixed position relative to the valve;
a movable body movably attached to the anchor, the anchor permitting lateral movement of the movable body in an axial direction of the flow line between a first position and a second position;
a shroud and an actuator blocking member carried by and movable laterally with the movable body, wherein:
the shroud is sized and positioned on the movable body to limit access to the hose connector when the movable body is in the first position and to permit access to the hose connector when the movable body is in the second position; and the actuator blocking member is sized and positioned on the movable body to prevent the actuator from moving from the second position to the first position when the movable body is in the second position, and to permit movement of the actuator when the movable body is in the first position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/703,047 US9746099B2 (en) | 2014-12-05 | 2015-05-04 | Safety lock for a gate valve |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201462088271P | 2014-12-05 | 2014-12-05 | |
| US62/088,271 | 2014-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2881171A1 CA2881171A1 (en) | 2016-06-05 |
| CA2881171C true CA2881171C (en) | 2019-12-31 |
Family
ID=56101841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2881171A Active CA2881171C (en) | 2014-12-05 | 2015-02-05 | Safety lock for a gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2881171C (en) |
-
2015
- 2015-02-05 CA CA2881171A patent/CA2881171C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA2881171A1 (en) | 2016-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20180129 |
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| U11 | Full renewal or maintenance fee paid |
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| MPN | Maintenance fee for patent paid |
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| U00 | Fee paid |
Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U00-U101 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE REQUEST RECEIVED Effective date: 20251204 |
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| U11 | Full renewal or maintenance fee paid |
Free format text: ST27 STATUS EVENT CODE: A-4-4-U10-U11-U102 (AS PROVIDED BY THE NATIONAL OFFICE); EVENT TEXT: MAINTENANCE FEE PAYMENT PAID IN FULL Effective date: 20251204 |