US3914752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump alarm system
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1973-06-04
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Granted: 1975-10-21
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Expires: 1993-06-04
Abstract
Abstract An alarm system for a high pressure reciprocating pump includes a detector member positioned adjacent the pump packing for detecting leakage of fluid therepast, and an alarm indicator responsive to movement of the detector member for operating an audible or visual alarm device or for stopping the pump.
Inventors
- 👤 Willis W Howard
- 👤 William C Maurer
- 👤 Everett H Lock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/002; F16J15/008; F04; F04B; F04B49/00; F04B49/10; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F04B2201/00; F04B2201/02; F04B2201/0208
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
74 words
In a reciprocating pump having a packing for sealing the annular space between the pump housing and shaft, rod or plunger, an apparatus for detecting the initial failure of said packing which comprises a detector member positioned adjacent to a point of packing failure and being actuated by impact of fluid discharging from said point of packing failure; and alarm indicator; and means for operating said alarm indicator upon actuation of said detector member.
Claim 2
Dependent Claim
74 words
In a reciprocating pump having a packing for sealing the annular space between the pump housing and shaft, rod or plunger, an apparatus for detecting the initial failure of said packing which comprises a detector member positioned adjacent to a point of packing failure and being actuated by impact of fluid discharging from said point of packing failure; and alarm indicator; and means for operating said alarm indicator upon actuation of said detector member.
Claim 3
Dependent Claim
65 words
Apparatus as defined in claim 1 wherein said detector member is positioned in confronting relation to said point of packing failure in a first position and is movable by the impact of fluid discharging at such point of packing failure to a second position and wherein said means for operating an alarm indicator is actuated by the movement of said member to said second position.
Claim 4
Dependent Claim
55 words
An apparatus aS defined in claim 2 wherein said alarm indicator is an electrically operated device, said means for actuating said alarm indicator includes an open loop electric circuit including said alarm indicator and an electric switch for closing said electric circuit, said switch being closed by movement of said member to said second position.
Claim 5
Dependent Claim
15 words
An apparatus as defined in claim 3 wherein said alarm indicator includes an audible device.
Claim 6
Dependent Claim
15 words
An apparatus as defined in claim 3 wherein said alarm indicator includes a visual device.
Claim 7
Dependent Claim
20 words
An apparatus as defined in claim 3 wherein said alarm indicator includes means for stopping the operation of said pump.
Claim 8
Dependent Claim
85 words
In a reciprocating pump having a packing for sealing the annular space between the pump housing and the pump plunger an alarm system for detecting failure of said packing which comprises: a detector member substantially surrounding said plunger at a location to the rear of and externally of said packing, said detector member being sufficiently close to said packing to be movable by the discharge of fluid therepast; an alarm indicator; and means responsive to movement of said detector member for actuating said alarm indicator.
Claim 9
Dependent Claim
85 words
In a reciprocating pump having a packing for sealing the annular space between the pump housing and the pump plunger an alarm system for detecting failure of said packing which comprises: a detector member substantially surrounding said plunger at a location to the rear of and externally of said packing, said detector member being sufficiently close to said packing to be movable by the discharge of fluid therepast; an alarm indicator; and means responsive to movement of said detector member for actuating said alarm indicator.
Claim 10
Dependent Claim
20 words
An apparatus as defined in claim 7 wherein the alarm indicator includes means for stopping the operation of said pump.
Claim 11
Dependent Claim
105 words
In a plunger pump having an inner and outer packing for sealing the annular space between the pump housing and the pump plunger at axially spaced intervals along said plunger and a vent passage in fluid communication with said annular space at a point intermediate said inner and outer packings, an apparatus for detecting the initial failure of said inner packing which comprises a detector member for detecting flow of fluid through said vent passage, said detector being actuable by impingement of fluid flowing through said vent passage; an alarm indicator; and means responsive to actuation of said detector member for operating said alarm indicator.
Claim 12
Dependent Claim
105 words
In a plunger pump having an inner and outer packing for sealing the annular space between the pump housing and the pump plunger at axially spaced intervals along said plunger and a vent passage in fluid communication with said annular space at a point intermediate said inner and outer packings, an apparatus for detecting the initial failure of said inner packing which comprises a detector member for detecting flow of fluid through said vent passage, said detector being actuable by impingement of fluid flowing through said vent passage; an alarm indicator; and means responsive to actuation of said detector member for operating said alarm indicator.
Claim 13
Dependent Claim
20 words
An apparatus as defined in claim 10 wherein the alarm indicator includes means for stopping the operation of said pump.
Claim 14
Dependent Claim
83 words
An alarm system for detecting incipient leakage of fluid past the plunger packing of a plunger pump which comprises: a detector member adapted to be positioned substantially around the pump plunger and to the rear of the plunger packing, said detector member being movable by high velocity fluid leakage through the plunger packing; and an alarm circuit including an indicator and a switch for actuating said indicator, said switch being movable to an activated position in response to movement of said detector member.
Claim 15
Dependent Claim
83 words
An alarm system for detecting incipient leakage of fluid past the plunger packing of a plunger pump which comprises: a detector member adapted to be positioned substantially around the pump plunger and to the rear of the plunger packing, said detector member being movable by high velocity fluid leakage through the plunger packing; and an alarm circuit including an indicator and a switch for actuating said indicator, said switch being movable to an activated position in response to movement of said detector member.
Claim 16
Dependent Claim
25 words
An alarm system as recited in claim 11 wherein said circuit includes means for stopping said pump in response to movement of said detector member.
Claim 17
Dependent Claim
71 words
An alarm system for detecting and indicating failure of plunger packing for a plunger pump which comprises: a detector member for detecting high velocity leakage of fluid past said packing; said member being movable by the impact of said high velocity leakage past said packing; means for indicating packing failure; and means responsive to movement of said detector member by impact of said high velocity leakage for actuating said indicating means.
Claim 18
Dependent Claim
71 words
An alarm system for detecting and indicating failure of plunger packing for a plunger pump which comprises: a detector member for detecting high velocity leakage of fluid past said packing; said member being movable by the impact of said high velocity leakage past said packing; means for indicating packing failure; and means responsive to movement of said detector member by impact of said high velocity leakage for actuating said indicating means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |