US3459363A - Valve-unloading mechanism for reciprocating pumps - Google Patents

Valve-unloading mechanism for reciprocating pumps Download PDF

Info

Publication number
US3459363A
US3459363A US692557A US3459363DA US3459363A US 3459363 A US3459363 A US 3459363A US 692557 A US692557 A US 692557A US 3459363D A US3459363D A US 3459363DA US 3459363 A US3459363 A US 3459363A
Authority
US
United States
Prior art keywords
valve
relay
pump
suction
unloading mechanism
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 - Lifetime
Application number
US692557A
Inventor
John E Miller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OILWELL Inc A CORP OF
National Oilwell Varco LP
Original Assignee
United States Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by United States Steel Corp filed Critical United States Steel Corp
Application granted granted Critical
Publication of US3459363A publication Critical patent/US3459363A/en
Anticipated expiration legal-status Critical
Assigned to USX CORPORATION reassignment USX CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JULY 9, 1986 Assignors: UNITED STATES STEEL CORPORATION
Assigned to OILWELL, INC., A CORP. OF DE reassignment OILWELL, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: USX CORPORATION
Assigned to NATIONAL-OILWELL, A CORP. OF DE reassignment NATIONAL-OILWELL, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OILWELL, INC.
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F04B49/243—Bypassing by keeping open the inlet valve

Definitions

  • a pump of the type to which the invention is applicable includes one or more cylinders (commonly three) and respective plungers mounted for reciprocable movement in the cylinders.
  • the plungers are driven through individual crossheads and connecting rods and usually a common crankshaft.
  • Each cylinder has a suction valve and a discharge valve, or two of each if the pump is doubleacting.
  • An object of my invention is to provide an improved and simplified unloading mechanism which operates quickly and in proper synchronism with the pump.
  • a more specific object is to provide an improved unloading mechanism which is actuated electrically through a proximity switch on the pump drive and includes a solenoid-operated rod for holding the suction valve open.
  • FIGURE 1 is a longitudinal sectional view of a portion of a pump equipped with my unloading mechanism
  • FIGURE 2 is a schematic wiring diagram of the preferred electric circuit embodied in the mechanism.
  • FIGURE 1 shows a portion of a pump which includes a cylinder 10, a plunger 12 mounted for reciprocable movement in the cylinder, and a stutfing box 13 surrounding the plunger where it enters the cylinder.
  • the plunger is connected to a suitable drive, the crosshead of which is shown diagrammatically at 14 in FIGURE 2.
  • the cylinder carries a suction valve pot 15, a discharge atented Aug. 5, 1969 valve pot 16, and a cylinder head 17.
  • the valve pots have chambers which communicate with the usual suction and discharge manifolds.
  • the suction valve includes a seat 18 fixed within the pot 15 and a cooperating disk 19.
  • a spring 20 bears against disk 19 and against a bumper 21 integral with the cylinder head 17 and thus urges the disk to its seated or closed position.
  • the discharge valve can be constructed similarly; hence I have not enumerated the individual parts. Since pumps of this construction or equivalent are well known, no more detailed description is deemed necessary.
  • the suction valve pot 15 carries an unloading mechanism 25 constructed in accordance with my invention.
  • the mechanism comprises a bracket 26 fixed to the bottom of the valve pot, and solenoid 27 fixed to the bracket, and a vertically movable lifter rod 28 attached to the armature of the solenoid.
  • Rod 28 extends through the bushing to the proximity of the valve disk 19.
  • the rod is slidable within the bushing, with O-rings 30 providing a seal.
  • solenoid 27 When solenoid 27 is energized, the rod moves upwardly into engagement with the valve disk and holds the valve open against the action of spring 20. Otherwise the rod clears the disk and allows it to open and close normally.
  • FIGURE 2 shows my preferred circuit schematically.
  • I provide separate circuits for each cylinder, since the plungers make their suction strokes at different times.
  • I provide separate circuits for the suction valves at each end of the cylinder.
  • My preferred circuit includes a master switch 32, a normally open proximity switch 33, and a solid-state amplifier 34.
  • the proximity switch and amplifier per so are known devices available commercially, for example, the Micro Switch proximity switch and the 40 FL 1 amplifier supplied by Honeywell, Inc. For descriptions, reference can be made to a printed publication by the supplier entitled Data Sheet 213 b, Supplement to Catalog 85.
  • I connect the power input terminals of the amplifier to lines 36 and 37 which are connected to a suitable power source.
  • I connect the proximity switch to the control terminals of the amplifier.
  • the master switch 32 has a load position, which it normally occupies, and an unload position.
  • the proximity switch closes momentarily at the end of each discharge stroke, but as long as the master switch 32 is in its load position, the circuit is not actuated, and the suction valve opens and closes in its usual sequence.
  • the circuit components include three relays A, B and C. I connect the coil of relay A in series with the unload contact of the master switch 32 across lines 36 and 37.
  • Relay A has three normally open contacts A A and A I connect the coil of relay B in series with contact A across the output terminals of amplifier 34 .
  • relay A When I move the master switch 32 to its unload position, relay A is energized and sets up relay B through contact A The next time the proximity switch 33 closes, relay B is energized momentarily.
  • Relay B has a double-throw, doublepole contact B I connect the normally open poles of the contact B contact A and the coil of relay C in series across lines 36 and 37, whereby relay C is energized with relay B.
  • Relay C has three normally open contacts C C and C When relay C is energized, it locks in through contacts C and A and thus remains energized even though relay B is energized only momentarily. I connect contact C in series with solenoid 27, whereby the solenoid is energized with relay C.
  • relay A When I return the master switch 32 to its load position, relay A is deenergized. Usually the proximity switch 33 is open at this time and relay B deenergized. I connect the normally closed poles of contact B in series with contact C and the coil of delay C, bypassing contact A whereby relay C remains energized even though both relays A and B now are deenergized. I connect contact C in parallel with contact A whereby relay B remains set up even though relay A is deenergized. The next time the proximity switch 33 closes to energize relay B, the normally closed poles of contact B open and break the current path through the coil of relay C. Thus the circuit returns to its normal deenergized state, the lifter rod 28 releases the valve disk 19, and the pump resumes its normal operation.
  • my invention affords a simple effective mechanism for unloading the suction valve of a reciprocating pump.
  • the circuit can be actuated only at the conclusion of a discharge stroke.
  • the lifter rod can engage or disengage the valve disk only while the ensuing suction stroke is taking place.
  • the lifter rod does not force the suction valve open against the discharge pressure of the pump nor allow it to slam closed under this pressure.
  • the action of the relays and solenoid is sufliciently rapid that the lifter rod moves fully into position before completion of a suction stroke.
  • a reciprocating pump which includes a cylinder, a plunger mounted in said cylinder for reciprocable movement, drive means operatively connected with said plunger, and suction and discharge valves on said cylinder, said plunger having a suction stroke during which said suction valve is open and said discharge valve closed,
  • an improved unloading mechanism comprising a solenoid, means mounting said solenoid on said suction valve, a lifter rod operated by said solenoid, and an electric circuit connected to said solenoid for selectively energizing and deenergizing it to move said rod to a position in which it holds said suction valve open and a position in which it allows said suction valve to operate normally, said circuit including control means for permitting said solenoid to be changed between its energized and deenergized states only when said plunger is making a suction stroke.
  • said last-named means includes a switch operated by said drive means at the end of a discharge stroke of said plunger.
  • said suction valve includes a. valve pot integral with said cylinder, a seat mounted in said pot, a disk engageable with said seat, and a spring urging said disk into engagement with said seat, said mounting means including a bracket fixed to the outside of said pot on which said solenoid is mounted, said rod extending into said pot and being engageable with said disk to hold the disk out of engagement with said seat against the action of said spring.
  • said circuit includes a master switch having a load position in which said suction valve operates normally and an unload position in which said rod holds said suction valve open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Description

g- 5, 9 v J. E. MILLER 3,459,363
VALVE' UNLOADING MECHANISM FOR RECIPROCATING PUMPS Filed Dec. 21, 1967 2 Sheets-Sheet 1 INVENTOR JOHN E. MILLER A BY ATTORNEY Aug. 5, 1969 J. E. MILLER 3,459,353
VALVE'UNLOADING MECHANISM FOR RECIPROCATING PUMPS Filed Dec. 21, 1967 2 Sheets-Sheet 2 v INVENTOR 3 j a g ua/m/ E. MILLER *8 2 v q BY ,//22%/ gLm ATTORNEY United States Patent Office 3,459,363 VALVE-UNLOADING MECHANISM FOR RECIPROCATING PUMPS John E. Miller, Dallas, Tex., assignor to United States Steel Corporation, a corporation of Delaware Filed Dec. 21, 1967, Ser. No. 692,557 Int. Cl. F0411 49/02, 49/06, 39/00 US. Cl. 230-24 5 Claims ABSTRACT OF THE DISCLOSURE This invention relates to an improved mechanism for unloading the suction valve of a reciprocating pump.
A pump of the type to which the invention is applicable includes one or more cylinders (commonly three) and respective plungers mounted for reciprocable movement in the cylinders. The plungers are driven through individual crossheads and connecting rods and usually a common crankshaft. Each cylinder has a suction valve and a discharge valve, or two of each if the pump is doubleacting. Reference can be made to Redman Patent No. 2,519,501 for an exemplary showing of such a pump, altough it is apparent my invention is not limited to use with a pump of this specific construction.
On occasion it may be necessary to stop discharge of fluid from the pump while keeping the pump in operation and maintaining flow through the cylinders. The simplest way of accomplishing this is with a valve-controlled bypass connected between the discharge and suction sides of the pump. A by-pass has disadvantages that considerable time is taken to change the valve settings (about 15 seconds minimum), and there is a loss of discharge pressure. To overcome these difiiculties, it is known to equip the pump with an unloading mechanism which holds the suction valve open as long as flow is to be stopped. Thus fluid merely flows in and out the cylinder through the suction valve. The discharge valve remains closed, and there is no loss of pressure therebeyond. As explained hereinafter, an unloading mechanism must act quickly and at the proper time in the pumping cycle. Previous unloading mechanisms with which I am familiar have been unduly complicated to achieve the necessary speed and synchronization.
An object of my invention is to provide an improved and simplified unloading mechanism which operates quickly and in proper synchronism with the pump.
A more specific object is to provide an improved unloading mechanism which is actuated electrically through a proximity switch on the pump drive and includes a solenoid-operated rod for holding the suction valve open.
In the drawing:
FIGURE 1 is a longitudinal sectional view of a portion of a pump equipped with my unloading mechanism; and
FIGURE 2 is a schematic wiring diagram of the preferred electric circuit embodied in the mechanism.
FIGURE 1 shows a portion of a pump which includes a cylinder 10, a plunger 12 mounted for reciprocable movement in the cylinder, and a stutfing box 13 surrounding the plunger where it enters the cylinder. The plunger is connected to a suitable drive, the crosshead of which is shown diagrammatically at 14 in FIGURE 2. The cylinder carries a suction valve pot 15, a discharge atented Aug. 5, 1969 valve pot 16, and a cylinder head 17. The valve pots have chambers which communicate with the usual suction and discharge manifolds. The suction valve includes a seat 18 fixed within the pot 15 and a cooperating disk 19. A spring 20 bears against disk 19 and against a bumper 21 integral with the cylinder head 17 and thus urges the disk to its seated or closed position. The discharge valve can be constructed similarly; hence I have not enumerated the individual parts. Since pumps of this construction or equivalent are well known, no more detailed description is deemed necessary.
The suction valve pot 15 carries an unloading mechanism 25 constructed in accordance with my invention. The mechanism comprises a bracket 26 fixed to the bottom of the valve pot, and solenoid 27 fixed to the bracket, and a vertically movable lifter rod 28 attached to the armature of the solenoid. I fit a bushing 29 in the bottom of the valve pot. Rod 28 extends through the bushing to the proximity of the valve disk 19. The rod is slidable within the bushing, with O-rings 30 providing a seal. When solenoid 27 is energized, the rod moves upwardly into engagement with the valve disk and holds the valve open against the action of spring 20. Otherwise the rod clears the disk and allows it to open and close normally.
During a suction stroke of the pump plunger 12 travels toward the left, as viewed in FIGURE 1. The suction valve is open and the discharge valve closed. During a discharge stroke, the plunger travels toward the right and the position of the valves normally is reversed. The crankshaft of the pump turns a half revolution during each stroke. Operation of the unloading mechanism must be synchronized with plunger movement so that rod 28 engages or releases the valve disk while the plunger is making a suction stroke. The rod must move with sufiicient speed that it completes its motion before the plunger completes its suction stroke. Otherwise the full discharge pressure of the pump would be on the disk at the time the rod is operating. My unloading mechanism includes a circuit for automatically synchronizing its operation in this manner. FIGURE 2 shows my preferred circuit schematically. In a multiple-cylinder pump I provide separate circuits for each cylinder, since the plungers make their suction strokes at different times. For double-acting pumps, I provide separate circuits for the suction valves at each end of the cylinder.
My preferred circuit includes a master switch 32, a normally open proximity switch 33, and a solid-state amplifier 34. The proximity switch and amplifier per so are known devices available commercially, for example, the Micro Switch proximity switch and the 40 FL 1 amplifier supplied by Honeywell, Inc. For descriptions, reference can be made to a printed publication by the supplier entitled Data Sheet 213 b, Supplement to Catalog 85. I connect the power input terminals of the amplifier to lines 36 and 37 which are connected to a suitable power source. I connect the proximity switch to the control terminals of the amplifier. The master switch 32 has a load position, which it normally occupies, and an unload position. I mount the proximity switch 33 adjacent the crosshead 14 (or some other reciprocating part) at the position the part occupies at the conclusion of a discharge stroke. The proximity switch closes momentarily at the end of each discharge stroke, but as long as the master switch 32 is in its load position, the circuit is not actuated, and the suction valve opens and closes in its usual sequence.
The circuit components include three relays A, B and C. I connect the coil of relay A in series with the unload contact of the master switch 32 across lines 36 and 37. Relay A has three normally open contacts A A and A I connect the coil of relay B in series with contact A across the output terminals of amplifier 34 .When I move the master switch 32 to its unload position, relay A is energized and sets up relay B through contact A The next time the proximity switch 33 closes, relay B is energized momentarily. Relay B has a double-throw, doublepole contact B I connect the normally open poles of the contact B contact A and the coil of relay C in series across lines 36 and 37, whereby relay C is energized with relay B. Relay C has three normally open contacts C C and C When relay C is energized, it locks in through contacts C and A and thus remains energized even though relay B is energized only momentarily. I connect contact C in series with solenoid 27, whereby the solenoid is energized with relay C.
When I return the master switch 32 to its load position, relay A is deenergized. Usually the proximity switch 33 is open at this time and relay B deenergized. I connect the normally closed poles of contact B in series with contact C and the coil of delay C, bypassing contact A whereby relay C remains energized even though both relays A and B now are deenergized. I connect contact C in parallel with contact A whereby relay B remains set up even though relay A is deenergized. The next time the proximity switch 33 closes to energize relay B, the normally closed poles of contact B open and break the current path through the coil of relay C. Thus the circuit returns to its normal deenergized state, the lifter rod 28 releases the valve disk 19, and the pump resumes its normal operation.
From the foregoing description, it is seen that my invention affords a simple effective mechanism for unloading the suction valve of a reciprocating pump. The circuit can be actuated only at the conclusion of a discharge stroke. Thus the lifter rod can engage or disengage the valve disk only while the ensuing suction stroke is taking place. The lifter rod does not force the suction valve open against the discharge pressure of the pump nor allow it to slam closed under this pressure. The action of the relays and solenoid is sufliciently rapid that the lifter rod moves fully into position before completion of a suction stroke. Although I require separate circuits for each cylinder, only a single master switch suffices.
While I have shown and described only a single embodiment of my invention, it is apparent that modifications may arise. Therefore, I do not wish to be limited to the disclosure set forth but only by the scope of the appended claims.
I claim:
1. In a reciprocating pump which includes a cylinder, a plunger mounted in said cylinder for reciprocable movement, drive means operatively connected with said plunger, and suction and discharge valves on said cylinder, said plunger having a suction stroke during which said suction valve is open and said discharge valve closed,
and a discharge stroke during which the position of said valves normally is reversed, the combination therewith of an improved unloading mechanism comprising a solenoid, means mounting said solenoid on said suction valve, a lifter rod operated by said solenoid, and an electric circuit connected to said solenoid for selectively energizing and deenergizing it to move said rod to a position in which it holds said suction valve open and a position in which it allows said suction valve to operate normally, said circuit including control means for permitting said solenoid to be changed between its energized and deenergized states only when said plunger is making a suction stroke.
2. A combination as defined in claim 1 in which said last-named means includes a switch operated by said drive means at the end of a discharge stroke of said plunger.
3. A combination as defined in claim 2 in which said switch is a proximity switch mounted adjacent a reciprocating part of said drive means at the position the part occupies at the conclusion of a discharge stroke.
4. A combination as defined in claim 1 in which said suction valve includes a. valve pot integral with said cylinder, a seat mounted in said pot, a disk engageable with said seat, and a spring urging said disk into engagement with said seat, said mounting means including a bracket fixed to the outside of said pot on which said solenoid is mounted, said rod extending into said pot and being engageable with said disk to hold the disk out of engagement with said seat against the action of said spring.
5. A combination as defined in claim 1 in which said circuit includes a master switch having a load position in which said suction valve operates normally and an unload position in which said rod holds said suction valve open.
References Cited UNITED STATES PATENTS 337,803 3/1886 Worth 230222 1,956,765 5/1934 Jones 230- 2,274,338 2/ 1942 Cody 230-24 2,681,177 6/1954 Hartwell 23024 2,730,296 1/1956 Hartwell 230-24 2,785,638 3/1957 Moller 103227 X 3,259,077 7/1966 Wiley et al. 103227 3,273,512 9/1966 Yoshida et al. 103-227 X 3,273,786 9/ 1966 Newton 230-23 3,327,640 6/1967 Townsend 103227 X DONLEY I. STOCKDIG, Primary Examiner W. J. KRAUSS, Assistant Examiner US. Cl. X.R.
US692557A 1967-12-21 1967-12-21 Valve-unloading mechanism for reciprocating pumps Expired - Lifetime US3459363A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69255767A 1967-12-21 1967-12-21

Publications (1)

Publication Number Publication Date
US3459363A true US3459363A (en) 1969-08-05

Family

ID=24781048

Family Applications (1)

Application Number Title Priority Date Filing Date
US692557A Expired - Lifetime US3459363A (en) 1967-12-21 1967-12-21 Valve-unloading mechanism for reciprocating pumps

Country Status (1)

Country Link
US (1) US3459363A (en)

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578884A (en) * 1969-05-08 1971-05-18 Gen Electric Oral hygiene apparatus
US4527959A (en) * 1983-05-10 1985-07-09 Whiteman Manufacturing Company Drilling fluid pump providing a uniform, controlled pressure and flow rate
WO1990015249A1 (en) * 1989-06-09 1990-12-13 Er Fluid Developments Limited Variable displacement pump
US5356269A (en) * 1989-06-09 1994-10-18 Er Fluid Developments Limited Variable displacement pump
US5364240A (en) * 1993-10-14 1994-11-15 Spartan Tool Div. Of Pettibone Corp. Fluid pump with pulsing feature
US20030205273A1 (en) * 2000-05-17 2003-11-06 Robert Chaffee Valve with electromechanical device for actuating the valve
US6651545B2 (en) 2001-12-13 2003-11-25 Caterpillar Inc Fluid translating device
US6681571B2 (en) 2001-12-13 2004-01-27 Caterpillar Inc Digital controlled fluid translating device
US20080229508A1 (en) * 2000-05-17 2008-09-25 Chaffee Robert B Inflatable device with recessed fluid controller and modified adjustment device
US20080245569A1 (en) * 2006-12-28 2008-10-09 Schlumberger Technology Corporation Apparatus and Methods to Perform Focused Sampling of Reservoir Fluid
US20080279705A1 (en) * 2007-05-11 2008-11-13 Toshimichi Wago Externally Assisted Valve for a Positive Displacement Pump
CN101550828A (en) * 2008-03-31 2009-10-07 普拉德研究及开发股份有限公司 Device and method for implementing focus sampling of reservoir fluid
US20090300846A1 (en) * 2001-07-10 2009-12-10 Chaffee Robert B Inflatable device forming mattresses and cushions
US20090314354A1 (en) * 2006-04-04 2009-12-24 Chaffee Robert B Method and apparatus for monitoring and controlling pressure in an inflatable device
US20100183448A1 (en) * 2007-05-11 2010-07-22 Edward Leugemors Methods of use for a positive displacement pump having an externally assisted valve
US20110083753A1 (en) * 2009-04-02 2011-04-14 Chaffee Robert B Inflatable device with fluid controller and self-sealing valve
US20110146260A1 (en) * 2009-12-03 2011-06-23 Alejandro Lopez Pamplona Hydraulic system having a hydrostatic, valve-controlled piston engine
US8162009B2 (en) 2006-04-04 2012-04-24 Chaffee Robert B Method and apparatus for monitoring and controlling pressure in an inflatable device
WO2012163892A3 (en) * 2011-05-31 2013-08-29 Continental Automotive Gmbh Inlet valve for a fluid pump and assembly method for an inlet valve for a fluid pump
US8776293B2 (en) 2001-03-30 2014-07-15 Robert B. Chaffee Pump with axial conduit
US9737153B2 (en) 2001-07-10 2017-08-22 Robert B. Chaffee Configurable inflatable support devices
US10677380B1 (en) 2019-07-26 2020-06-09 Halliburton Energy Services, Inc. Fail safe suction hose for significantly moving suction port
US10808851B1 (en) 2019-06-10 2020-10-20 Halliburton Energy Services, Inc. Multi-material frac valve poppet
US10808846B1 (en) 2019-05-14 2020-10-20 Halliburton Energy Services, Inc. Pump plunger with wrench features
US10941766B2 (en) 2019-06-10 2021-03-09 Halliburton Energy Sendees, Inc. Multi-layer coating for plunger and/or packing sleeve
US10947967B1 (en) * 2020-03-11 2021-03-16 Halliburton Energy Services, Inc. Discharge valve disabler and pressure pulse generator therefrom
US10989188B2 (en) 2019-07-26 2021-04-27 Halliburton Energy Services, Inc. Oil field pumps with reduced maintenance
US11105327B2 (en) 2019-05-14 2021-08-31 Halliburton Energy Services, Inc. Valve assembly for a fluid end with limited access
US11231111B2 (en) 2019-05-14 2022-01-25 Halliburton Energy Services, Inc. Pump valve seat with supplemental retention
US11261863B2 (en) 2019-05-14 2022-03-01 Halliburton Energy Services, Inc. Flexible manifold for reciprocating pump
US11280326B2 (en) 2019-06-10 2022-03-22 Halliburton Energy Services, Inc. Pump fluid end with suction valve closure assist
US11353117B1 (en) 2020-01-17 2022-06-07 Vulcan Industrial Holdings, LLC Valve seat insert system and method
US11384756B1 (en) * 2020-08-19 2022-07-12 Vulcan Industrial Holdings, LLC Composite valve seat system and method
US11391374B1 (en) 2021-01-14 2022-07-19 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US11421680B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US11421679B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing assembly with threaded sleeve for interaction with an installation tool
US11434900B1 (en) 2022-04-25 2022-09-06 Vulcan Industrial Holdings, LLC Spring controlling valve
US11441687B2 (en) 2019-05-14 2022-09-13 Halliburton Energy Services, Inc. Pump fluid end with positional indifference for maintenance
US20220349399A1 (en) * 2018-05-25 2022-11-03 Kerr Machine Co. Fluid end plug with bore clearance
US11560888B2 (en) 2019-05-14 2023-01-24 Halliburton Energy Services, Inc. Easy change pump plunger
USD980876S1 (en) 2020-08-21 2023-03-14 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD986928S1 (en) 2020-08-21 2023-05-23 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US11739748B2 (en) 2019-05-14 2023-08-29 Halliburton Energy Services, Inc. Pump fluid end with easy access suction valve
USD997992S1 (en) 2020-08-21 2023-09-05 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US11920684B1 (en) 2022-05-17 2024-03-05 Vulcan Industrial Holdings, LLC Mechanically or hybrid mounted valve seat
US11952986B2 (en) 2019-05-02 2024-04-09 Kerr Machine Co. Fracturing pump arrangement using a plunger with an internal fluid passage
US11965503B2 (en) 2019-05-14 2024-04-23 Halliburton Energy Services, Inc. Flexible manifold for reciprocating pump

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US337803A (en) * 1886-03-09 Electric air-pump
US1956765A (en) * 1930-03-25 1934-05-01 Bonnie G Jones Apparatus for producing high vacuum
US2274338A (en) * 1941-01-18 1942-02-24 Westinghouse Electric & Mfg Co Fluid-translating apparatus
US2681177A (en) * 1950-02-14 1954-06-15 Worthington Corp Compressor unloading mechanism
US2730296A (en) * 1952-08-09 1956-01-10 Worthington Corp Unloader mechanism for compressors
US2785638A (en) * 1954-04-08 1957-03-19 Clifford B Moller Force pump for slurries
US3259077A (en) * 1964-10-26 1966-07-05 Dow Chemical Co Multi-syringe-type pump
US3273786A (en) * 1963-02-01 1966-09-20 Alwin B Newton Flow regulator for piston-equipped cylinder
US3273512A (en) * 1964-03-16 1966-09-20 Hitachi Ltd Pump device for delivering a minute quantity of fluid
US3327640A (en) * 1965-01-13 1967-06-27 Townsend Engineering Co Pump for sausage mixture or the like

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US337803A (en) * 1886-03-09 Electric air-pump
US1956765A (en) * 1930-03-25 1934-05-01 Bonnie G Jones Apparatus for producing high vacuum
US2274338A (en) * 1941-01-18 1942-02-24 Westinghouse Electric & Mfg Co Fluid-translating apparatus
US2681177A (en) * 1950-02-14 1954-06-15 Worthington Corp Compressor unloading mechanism
US2730296A (en) * 1952-08-09 1956-01-10 Worthington Corp Unloader mechanism for compressors
US2785638A (en) * 1954-04-08 1957-03-19 Clifford B Moller Force pump for slurries
US3273786A (en) * 1963-02-01 1966-09-20 Alwin B Newton Flow regulator for piston-equipped cylinder
US3273512A (en) * 1964-03-16 1966-09-20 Hitachi Ltd Pump device for delivering a minute quantity of fluid
US3259077A (en) * 1964-10-26 1966-07-05 Dow Chemical Co Multi-syringe-type pump
US3327640A (en) * 1965-01-13 1967-06-27 Townsend Engineering Co Pump for sausage mixture or the like

Cited By (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3578884A (en) * 1969-05-08 1971-05-18 Gen Electric Oral hygiene apparatus
US4527959A (en) * 1983-05-10 1985-07-09 Whiteman Manufacturing Company Drilling fluid pump providing a uniform, controlled pressure and flow rate
WO1990015249A1 (en) * 1989-06-09 1990-12-13 Er Fluid Developments Limited Variable displacement pump
US5356269A (en) * 1989-06-09 1994-10-18 Er Fluid Developments Limited Variable displacement pump
US5409354A (en) * 1989-06-09 1995-04-25 Er Fluid Developments Limited Variable displacement pump
US5364240A (en) * 1993-10-14 1994-11-15 Spartan Tool Div. Of Pettibone Corp. Fluid pump with pulsing feature
US9279430B2 (en) 2000-05-17 2016-03-08 Robert B. Chaffee Pump with axial conduit
US20110167564A1 (en) * 2000-05-17 2011-07-14 Chaffee Robert B Inflatable device with recessed fluid controller and modified adjustment device
US8826478B2 (en) 2000-05-17 2014-09-09 Robert B. Chaffee Inflatable device forming mattresses and cushions
US20050166963A9 (en) * 2000-05-17 2005-08-04 Robert Chaffee Valve with electromechanical device for actuating the valve
US20080229508A1 (en) * 2000-05-17 2008-09-25 Chaffee Robert B Inflatable device with recessed fluid controller and modified adjustment device
US20030205273A1 (en) * 2000-05-17 2003-11-06 Robert Chaffee Valve with electromechanical device for actuating the valve
US8413674B2 (en) 2000-05-17 2013-04-09 Robert B. Chaffee Valve with electromechanical device for actuating the valve
US9279510B2 (en) 2000-05-17 2016-03-08 Robert B. Chaffee Valve with electromechanical device for actuating the valve
US20100108157A1 (en) * 2000-05-17 2010-05-06 Chaffee Robert B Valve with electromechanical device for actuating the valve
US7644724B2 (en) * 2000-05-17 2010-01-12 Robert Chaffee Valve with electromechanical device for actuating the valve
US8776293B2 (en) 2001-03-30 2014-07-15 Robert B. Chaffee Pump with axial conduit
US20090300846A1 (en) * 2001-07-10 2009-12-10 Chaffee Robert B Inflatable device forming mattresses and cushions
US9737153B2 (en) 2001-07-10 2017-08-22 Robert B. Chaffee Configurable inflatable support devices
US8225444B2 (en) 2001-07-10 2012-07-24 Chaffee Robert B Inflatable device forming mattresses and cushions
US6681571B2 (en) 2001-12-13 2004-01-27 Caterpillar Inc Digital controlled fluid translating device
US6651545B2 (en) 2001-12-13 2003-11-25 Caterpillar Inc Fluid translating device
US20090314354A1 (en) * 2006-04-04 2009-12-24 Chaffee Robert B Method and apparatus for monitoring and controlling pressure in an inflatable device
US9289073B2 (en) 2006-04-04 2016-03-22 Robert B. Chaffee Method and apparatus for monitoring and controlling pressure in an inflatable device
US8839474B2 (en) 2006-04-04 2014-09-23 Robert B. Chaffee Method and apparatus for monitoring and controlling pressure in an inflatable device
US8162009B2 (en) 2006-04-04 2012-04-24 Chaffee Robert B Method and apparatus for monitoring and controlling pressure in an inflatable device
US8413278B2 (en) 2006-04-04 2013-04-09 Robert B. Chaffee Method and apparatus for monitoring and controlling pressure in an inflatable device
US7878244B2 (en) * 2006-12-28 2011-02-01 Schlumberger Technology Corporation Apparatus and methods to perform focused sampling of reservoir fluid
US20080245569A1 (en) * 2006-12-28 2008-10-09 Schlumberger Technology Corporation Apparatus and Methods to Perform Focused Sampling of Reservoir Fluid
US8506262B2 (en) 2007-05-11 2013-08-13 Schlumberger Technology Corporation Methods of use for a positive displacement pump having an externally assisted valve
US20080279705A1 (en) * 2007-05-11 2008-11-13 Toshimichi Wago Externally Assisted Valve for a Positive Displacement Pump
US8366408B2 (en) * 2007-05-11 2013-02-05 Schlumberger Technology Corporation Externally assisted valve for a positive displacement pump
US20100183448A1 (en) * 2007-05-11 2010-07-22 Edward Leugemors Methods of use for a positive displacement pump having an externally assisted valve
CN101550828A (en) * 2008-03-31 2009-10-07 普拉德研究及开发股份有限公司 Device and method for implementing focus sampling of reservoir fluid
CN101550828B (en) * 2008-03-31 2014-05-21 普拉德研究及开发股份有限公司 Device and method for implementing focus sampling of reservoir fluid
US20110083753A1 (en) * 2009-04-02 2011-04-14 Chaffee Robert B Inflatable device with fluid controller and self-sealing valve
US8684030B2 (en) 2009-04-02 2014-04-01 Robert B. Chaffee Inflatable device with fluid controller and self-sealing valve
US9803747B2 (en) 2009-04-02 2017-10-31 Robert B. Chaffee Inflatable device with recessed fluid controller and self-sealing valve
US20110146260A1 (en) * 2009-12-03 2011-06-23 Alejandro Lopez Pamplona Hydraulic system having a hydrostatic, valve-controlled piston engine
JP2014517196A (en) * 2011-05-31 2014-07-17 コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツング Inlet valve for fluid pump and assembly method for inlet valve for fluid pump
CN103717894A (en) * 2011-05-31 2014-04-09 大陆汽车有限公司 Inlet valve for a fluid pump and assembly method for an inlet valve for a fluid pump
US9677558B2 (en) 2011-05-31 2017-06-13 Continental Automotive Gmbh Method for detecting a closing time point of a valve having a coil drive, and valve
WO2012163892A3 (en) * 2011-05-31 2013-08-29 Continental Automotive Gmbh Inlet valve for a fluid pump and assembly method for an inlet valve for a fluid pump
CN103717894B (en) * 2011-05-31 2018-02-06 大陆汽车有限公司 The installation method into valve into valve and for fluid pump for fluid pump
US20220349399A1 (en) * 2018-05-25 2022-11-03 Kerr Machine Co. Fluid end plug with bore clearance
US11952986B2 (en) 2019-05-02 2024-04-09 Kerr Machine Co. Fracturing pump arrangement using a plunger with an internal fluid passage
US11965503B2 (en) 2019-05-14 2024-04-23 Halliburton Energy Services, Inc. Flexible manifold for reciprocating pump
US10808846B1 (en) 2019-05-14 2020-10-20 Halliburton Energy Services, Inc. Pump plunger with wrench features
US11441687B2 (en) 2019-05-14 2022-09-13 Halliburton Energy Services, Inc. Pump fluid end with positional indifference for maintenance
US11739748B2 (en) 2019-05-14 2023-08-29 Halliburton Energy Services, Inc. Pump fluid end with easy access suction valve
US11560888B2 (en) 2019-05-14 2023-01-24 Halliburton Energy Services, Inc. Easy change pump plunger
US11105327B2 (en) 2019-05-14 2021-08-31 Halliburton Energy Services, Inc. Valve assembly for a fluid end with limited access
US11231111B2 (en) 2019-05-14 2022-01-25 Halliburton Energy Services, Inc. Pump valve seat with supplemental retention
US11261863B2 (en) 2019-05-14 2022-03-01 Halliburton Energy Services, Inc. Flexible manifold for reciprocating pump
US10808851B1 (en) 2019-06-10 2020-10-20 Halliburton Energy Services, Inc. Multi-material frac valve poppet
US11280326B2 (en) 2019-06-10 2022-03-22 Halliburton Energy Services, Inc. Pump fluid end with suction valve closure assist
US11885316B2 (en) 2019-06-10 2024-01-30 Halliburton Energy Services, Inc. Pump fluid end with suction valve closure assist
US10941766B2 (en) 2019-06-10 2021-03-09 Halliburton Energy Sendees, Inc. Multi-layer coating for plunger and/or packing sleeve
US10989188B2 (en) 2019-07-26 2021-04-27 Halliburton Energy Services, Inc. Oil field pumps with reduced maintenance
US10677380B1 (en) 2019-07-26 2020-06-09 Halliburton Energy Services, Inc. Fail safe suction hose for significantly moving suction port
US11353117B1 (en) 2020-01-17 2022-06-07 Vulcan Industrial Holdings, LLC Valve seat insert system and method
US10947967B1 (en) * 2020-03-11 2021-03-16 Halliburton Energy Services, Inc. Discharge valve disabler and pressure pulse generator therefrom
US11421680B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing bore wear sleeve retainer system
US11421679B1 (en) 2020-06-30 2022-08-23 Vulcan Industrial Holdings, LLC Packing assembly with threaded sleeve for interaction with an installation tool
US11384756B1 (en) * 2020-08-19 2022-07-12 Vulcan Industrial Holdings, LLC Composite valve seat system and method
USD980876S1 (en) 2020-08-21 2023-03-14 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD986928S1 (en) 2020-08-21 2023-05-23 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
USD997992S1 (en) 2020-08-21 2023-09-05 Vulcan Industrial Holdings, LLC Fluid end for a pumping system
US11391374B1 (en) 2021-01-14 2022-07-19 Vulcan Industrial Holdings, LLC Dual ring stuffing box
US11434900B1 (en) 2022-04-25 2022-09-06 Vulcan Industrial Holdings, LLC Spring controlling valve
US11761441B1 (en) * 2022-04-25 2023-09-19 Vulcan Industrial Holdings, LLC Spring controlling valve
US11920684B1 (en) 2022-05-17 2024-03-05 Vulcan Industrial Holdings, LLC Mechanically or hybrid mounted valve seat

Similar Documents

Publication Publication Date Title
US3459363A (en) Valve-unloading mechanism for reciprocating pumps
US3200591A (en) Polarized solenoid actuating system
US2436992A (en) Solenoid with plunger
US2898936A (en) Pilot actuated fluid control valve
US2467509A (en) Hydraulic system
US3162134A (en) Electromagnetic pump and energizing means therefor
US2038287A (en) Automatic lubrication system
US5209649A (en) Control system for a two-cylinder thick matter pump
GB873114A (en) Improvements in hydraulic oscillators
CN109072947A (en) Hydraulic switching facility for motor vehicles
US2336526A (en) Means for controlling the operation of pumps and the like
US2134693A (en) Pumping mechanism
GB1055865A (en) Hydraulic anti-shock device
ES347163A1 (en) Hydraulic antishock device
US2861519A (en) Fluid driven grease pump
US3822370A (en) Hydraulic control means with magnetic flow sensing spool
US2950599A (en) Multiple windshield wiper control
GB898694A (en) Improvements in or relating to hydraulic drives for electric switchgear
US2220327A (en) Control system
US858470A (en) Fluid-pressure system.
US2867236A (en) Solenoid operated valve with provision for safe failure
US2495598A (en) Electrically operated pump
US3072315A (en) Engine control
GB1049314A (en) Electromagnetic position controlling arrangement
US3752602A (en) Oil pump for heating installations

Legal Events

Date Code Title Description
AS Assignment

Owner name: USX CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:UNITED STATES STEEL CORPORATION;REEL/FRAME:004748/0267

Effective date: 19870312

AS Assignment

Owner name: NATIONAL-OILWELL, A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:OILWELL, INC.;REEL/FRAME:004727/0470

Effective date: 19870327

Owner name: OILWELL, INC., A CORP. OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:USX CORPORATION;REEL/FRAME:004727/0459

Effective date: 19870327