US20140086774A1 - Fluid end of a high pressure plunger pump having a groove adapted to receive a spring retainer of a suction valve - Google Patents
Fluid end of a high pressure plunger pump having a groove adapted to receive a spring retainer of a suction valve Download PDFInfo
- Publication number
- US20140086774A1 US20140086774A1 US13/646,170 US201213646170A US2014086774A1 US 20140086774 A1 US20140086774 A1 US 20140086774A1 US 201213646170 A US201213646170 A US 201213646170A US 2014086774 A1 US2014086774 A1 US 2014086774A1
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- US
- United States
- Prior art keywords
- bore
- retainer
- section
- groove
- base
- 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
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Classifications
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- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/007—Cylinder heads
-
- 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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/102—Disc valves
- F04B53/1032—Spring-actuated disc valves
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
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- 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
- F16K15/00—Check valves
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
- F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7922—Spring biased
- Y10T137/7929—Spring coaxial with valve
- Y10T137/7934—Spring abuts removable valve stem guide
Definitions
- the present disclosure concerns a tapered groove in a high pressure plunger pump; the groove receives a spring retainer; the spring retainer at a first portion and a second portion is carried in the groove; the groove is configured to prevent the retainer from moving out of the groove along the long axis of the suction bore.
- U.S. Pat. No. 6,910,871, Blume discloses valve guide and spring retainer assemblies for use in plunger pump housings that incorporate features for stress relief. These pump housings have structural features to accommodate correspondingly shaped valve guides and/or spring retainers that are internally fixed in place using one or more non-threaded spacers.
- U.S. Pat. No. 6,544,012 Blume, discloses a Y-block fluid section plunger pump housing having a cylinder bore which is transversely elongated at its intersection with suction and discharge bores to provide stress relief and reduction in housing weight.
- a spoked, ring valve spring retainer further reduces stress near the bore intersection and allows use of a top stem guided suction valve.
- Tapered cartridge packing assemblies facilitate use of a one-piece plunger in Y-block housings and also allow packing in such housings to be changed without removing the plunger.
- One aspect of the invention is embodied by a fluid end of a plunger pump that has a plunger bore, discharge bore, suction bore, valve cover bore, and cross-bore intersection formed in portions of the fluid end.
- Each of the above named bores has an axis.
- a plunger bore transition area is at an opening of the plunger bore and also adjacent the cross-bore intersection.
- a valve cover bore transition area is at an opening of the valve cover bore and also adjacent the cross-bore intersection.
- the plunger bore and valve cover bore openings open into the cross-bore intersection.
- the discharge bore and suction bore each have an opening which opens into said cross-bore intersection.
- the suction bore axis extends through the opening of the discharge bore which opens into said cross-bore intersection.
- the discharge bore axis extends through the opening of the suction bore which opens into said cross-bore intersection.
- the valve cover bore axis extends into the opening of the plunger bore which opens into the cross-bore intersection.
- the fluid end further has a groove.
- the groove traverses a curvilinear path around an open space.
- the discharge bore and suction bore axes each extend into said open space.
- the groove has a first section and a second section.
- the first section has a first end with a first opening and a second end.
- the second section has a first end.
- the second section has a second end with an opening.
- the first and second sections each have a closed base opposite and an open side of each section.
- the first and second sections each have a first angled surface and a second angled surface. The first angled surface and second angled surface of the first section converge towards each other towards the base of the first section.
- the angle formed between the first angled surface and second angled surface of the first section is greater than 90° and less than 180°.
- the first angled surface and second angled surface of the second section converge towards each other towards the base of the second section.
- the angle formed between the first angled surface and second angled surface of the second section is greater than 90° and less than 180°.
- a gap is between said first ends of said first and second sections of the groove.
- a gap is between the second ends of said first and second sections of the groove.
- a further aspect of the invention is characterized in that the plunger bore transition area is between and coplanar with the first end of the first section of the groove and the first end of the second section of the groove.
- the valve cover bore transition area is between and coplanar with the second end of the first section of the groove and the second end of the second section of the groove.
- a first portion of a spring retainer is in the first section of the groove and a second portion of the spring retainer is in the second section of said groove.
- the retainer has a first portion having a first side with a first surface and a second surface.
- the first portion has a second side with a third surface.
- the first surface is angled relative to the second surface.
- the exterior angle formed by the surfaces is greater than 180° and less than 270°.
- the retainer has a second portion.
- the second portion has a first side with a first surface and a second surface.
- the second portion has a second side with a third surface.
- the first surface of the second portion is angled relative to the second surface of the second portion.
- the exterior angle formed by the surfaces is greater than 180° and less than 270°.
- the retainer further has a base portion from which the first portion extends and the second portion extends.
- the base portion has a first surface on a first side of the base portion.
- the base portion has a second surface on a second side of the base. The second side is opposite the first side.
- the third surface of the retainer first portion is angled relative to the base second surface. The angle is greater than 90° and less than 180°.
- the first surface of the retainer first portion is angled relative to the base first surface.
- the exterior angle formed by the surfaces is between 180° and 270°.
- the third surface of the retainer second portion is angled relative to the base second surface. The angle is greater than 90° and less than 180°.
- the first surface of the retainer second portion is angled relative to the base first surface.
- the exterior angle formed by the surfaces is greater than 180° and less than 270°.
- the base of the spring retainer has a third surface.
- the third surface has a central portion and a first end portion angled relative to the central portion.
- the third surface also has a second end portion angled relative to the central portion. The angle between the first end portion and the central portion is greater than 90° and less than 180°.
- the angle between the central portion and the second end portion is greater than 90° and less than 180°.
- the base also has a fourth surface opposite the third surface.
- the fourth surface has a central portion and a first end portion angled relative to the central portion.
- the fourth surface also has a second end portion angled relative to the central portion.
- the angle between the first end portion and the central portion is greater than 90° and less than 180°.
- the angle between the central portion and the second end portion is greater than 90° and less than 180°.
- the third surface is between the base first and second surfaces.
- the fourth surface is between the base first and second surfaces.
- FIG. 1 is an isometric sectional view of a fluid end of a plunger pump embodying an embodiment of the present invention; wherein the section is taken through the housing of the fluid end of a plunger pump; the section being parallel to the long axis of the plunger bore, the long axis of the suction bore, and the long axis of the discharge bore; a spring retainer is disposed in and is rotatable about its central axis in the retainer groove; the view shows the spring retainer having been rotated in a first circumferential direction, counter clock-wise direction, until further rotation is prevented by abutment of a portion of the spring retainer against a portion of the valve cover; components of the fluid end have been omitted for simplicity.
- FIG. 2 is the same sectional shown in FIG. 1 except the spring retainer has been rotated in a second circumferential direction opposite from the first circumferential direction, clockwise direction, until the rotation is stopped by a portion of the spring retainer abutting up against the valve cover;
- FIG. 3 is a sectional view of the fluid end of FIG. 1 ; the section, however, is taken perpendicular to the plunger bore and parallel to the suction and discharge bores; additionally, components of the fluid end such as the plunger, suction valve assembly and discharge valve assembly are shown; the spring retainer is shown disposed in the retainer groove holding the suction valve spring in place to bias a suction valve in the closed position against its valve seat.
- FIG. 4A is an isometric sectional view of the fluid end shown in FIG. 1 , wherein the spring retainer and valve cover have been omitted from the view; the view shows a first section of the retaining groove extending between the transition area of the plunger bore and the transition area of the valve cover bore.
- FIG. 4B is an isometric sectional view of the fluid end shown in FIG. 1 , wherein the spring retainer and valve cover have been omitted from the view; the view shows a second section of the retaining groove, radially opposite the first section of the retaining groove, extending between the transition area of the plunger bore and the transition area of the valve cover bore.
- FIGS. 4C is and 4 D are blow ups of the details of FIGS. 4A and 4B respectively; the detail shows that the retaining groove has a first surface angled in a first direction, a second surface angled in a second different direction and a rounded transition area joining the first surface to the second surface at a base of the groove; opposite the base of the groove is an open side.
- FIG. 5 is a sectional view of the fluid end shown in FIG. 1 , wherein the spring retainer and valve cover have been omitted; the view shows the retainer groove first section and second section wherein the plunger bore has a transition area which is between a first end of the first section and a second end of the second section thereby providing a break, gap or discontinuity between the retaining groove first section and the retaining groove second section; the gap is between the first and second section first ends.
- FIG. 6 is a sectional view of the fluid end shown in FIG. 5 wherein the spring retainer and valve cover have been omitted; the view shows the retainer groove first section and second section wherein the valve cover bore has a transition area which is between the first section and the second section thereby providing a break, gap or discontinuity between the retaining groove first section and the retaining groove second section; the gap is between the first and second section second ends.
- FIGS. 7A through 7H show various views of the spring retainer shown in FIG. 1 ;
- FIG. 7A is a top view;
- FIG. 7B is a right-sided isometric view;
- FIG. 7C is a right-sided view;
- FIG. 7D is a left-sided view;
- FIG. 7E is a front-side view;
- FIG. 7F is a back-side view;
- FIG. 7G is a bottom view; and
- FIG. 7H is a left-side isometric view.
- FIG. 8 is an isometric sectional view of the fluid end shown in FIG. 4A wherein the spring retainer is aligned so that a first retainer portion is disposed between the first ends of the first and second groove sections; a second retainer portion is disposed between the second ends of the first and second groove sections; the first retainer portion is seating against the plunger bore transition area; the second retainer portion is seating against the valve cover bore transition area; the valve cover is not present; the retainer spring is compressed.
- FIG. 9 is a cutaway isometric sectional view of the fluid end shown in FIG. 8 wherein the spring coupled to the spring retainer and valve is compressed; the valve is in the closed position; the spring has been rotated to an installed position where the retainer's long axis is perpendicular to the plunger bore axis.
- the retainer ring can also be called a spring retainer 20 .
- the plunger 24 shown in FIG. 3 reciprocates in a first direction 26 and an opposite second direction 28 along the long axis 30 of the plunger bore 32 .
- the long axis extends along the length of the plunger bore.
- Suction valve 40 normally in the closed position, moves off its valve seat 42 towards the spring retainer 20 . Fluid then passes over the spring retainer into the cross bore intersection 44 .
- the plunger 24 then reciprocates in the opposite second direction 28 along the plunger bore long axis 30 toward the valve cover 34 .
- the reciprocation causes the fluid to exit the fluid end 54 through discharge bore 46 .
- the fluid exits the discharge bore by pushing discharge valve 48 off its valve seat 50 and exiting the discharge bore through a fluid outlet 52 .
- fluid is drawn into the fluid end 54 and ejected from the fluid end 54 .
- the fluid end is a single monoblock piece machined from a single casting or forging.
- the forces of the fluid may cause the spring retainer 20 to rotate about the retainer central axis 56 .
- the central axis can also be called a third axis of the spring retainer.
- the retainer is prevented by the valve cover 34 from rotating in a manner which enables the first end portion 58 a of the first retainer portion 58 or the first end portion 60 a of the second retainer portion 60 to be in a position such that the plunger will contact these end portions or any other portions of the retainer.
- the valve cover 34 extends through the valve cover bore 34 a and overlaps a valve cover bore transition area 78 .
- the valve cover transition area 78 is between a second end of first groove section 86 and a second end of a second section 90 .
- the valve cover bore transition area 78 is coplanar with the second ends of the first and second groove sections 86 , 90 .
- the valve cover bore transition area 78 is also coplanar with groove 22 .
- the valve cover is thus in the path of rotation of the retainer 20 .
- the cover provides an abutment to prevent 360° rotation of the spring retainer in either the clockwise or counter clockwise direction.
- the configuration of the groove 22 and the retainer 20 further prevent the retainer 20 from moving in a first direction 62 along the long axis 64 of the suction bore 36 towards the discharge bore 46 .
- the configuration of the groove 22 and the retainer 20 further prevent the retainer 20 from moving in a second direction 66 along the long axis 68 of the discharge bore 46 towards the suction valve 40 .
- This further ensures that the end portions 58 a , 60 a of the retainer 20 and all other portions of the retainer 20 remain outside of the pathway of the plunger 24 so that the plunger 24 does not contact the retainer 20 during its reciprocation. Therefore, the configuration of the groove 22 and the configuration of the portions of the retainer 20 in the groove 22 cooperate such that the retainer 20 will not slip out of the groove 22 .
- the retainer will not slip out of the groove 22 in the direction 62 of the discharge valve 48 along the long axis 64 of the suction bore. It will also not slip out of the groove in the direction 66 along discharge bore long axis 68 towards the suction bore valve 40 .
- the discharge bore long axis extends along the length of the discharge bore.
- the suction bore long axis extends along the length of the suction bore.
- the valve cover bore, suction bore, discharge bore, and plunger bore each have an opening, 34 b , 36 a , 46 a and 32 a which opens into the cross-bore intersection 44 .
- the valve cover bore transition area 78 is at the valve cover bore opening 34 b .
- the plunger bore transition area 70 is at the plunger bore opening 32 a .
- the suction bore axis 64 extends through the opening of the discharge bore opening 46 a .
- the discharge bore axis 68 extends though the opening 36 a of the suction bore.
- the valve cover bore central axis 34 c extends through opening 32 a in the plunger bore.
- the plunger bore axis 30 extends through opening 34 b of the valve cover bore.
- the spring retainer 20 can be installed in the retaining groove 22 .
- the suction valve 40 and valve seat 42 are installed in the suction bore 36 .
- the valve cover 34 is not yet installed.
- the plunger 24 is not in the cross bore intersection 44 or overlapping the plunger bore transition area 70 .
- Spring 72 is disposed so that one end 72 a of the spring is seated on the valve 40 . It is seated around the valve boss 74 .
- the portion of the valve which supports the spring can be called a spring support.
- the spring retainer 20 is oriented to be placed in a first position.
- the first position can be called a drop in position or pre-installed position.
- first retainer portion 58 of the spring retainer is aligned with the plunger bore transition 70 area so it overlaps the transition area.
- second spring retainer portion 60 is aligned with the valve cover bore transition area 78 so it overlaps the transition area.
- a boss 82 extending along the central axis 56 is aligned and inserted into an end 72 b of compression spring 72 .
- the boss could be a recessed area which receives the second end of the compression spring.
- the portion of the retainer which supports the second end of the spring can generally be called a spring support.
- the installer then rotates the spring retainer about its central axis such that a leading edge 84 of the first retainer portion 58 of the retainer is brought to be adjacent an opening 22 a of the groove.
- the opening 22 a is at the first end of the first groove section 86 .
- the rotation also causes a leading edge 88 of the retainer second portion 60 to be adjacent the opening 22 b in the groove 22 .
- the opening is at the second end of the second groove section 90 .
- the installer maintains the spring retainer 20 so its first portion 58 is abutted by the plunger bore transition area 70 and its second portion 60 is abutted by the valve cover bore transition area 78 .
- the retainer 20 is as axially close to the suction valve 40 as permitted by the construction of the transition areas 70 , 78 and retainer groove 22 .
- the spring retainer 20 can be said to be in an aligned position.
- the spring retainer 20 can be said to be in the aligned position.
- the aligned first position can also be called the aligned drop in position or the aligned pre-installation position. Additionally in the aligned position, a portion of the first side surface 76 a of the retainer first portion 58 is in axial alignment with a first surface 23 a of the first section 86 of the retaining groove 22 . The first surface 23 a of the first section 86 of the retaining groove 22 is angled. Additionally, at least a portion of a second side surface 76 b of the retainer first portion 58 is in axial alignment with a second surface 23 b of the first section 86 of the retaining groove 22 . The second surface 23 b is angled. The first side surface 76 a and second side surface 76 b are angled.
- the spring retainer in the aligned position is also oriented such a portion of the first side surface 80 a of the second portion 60 of the spring retainer 20 is in axial alignment with the first surface 23 a of the second section 90 of the retaining groove 22 . Additionally, at least a portion of a second side surface 80 b of the retainer second portion 60 is in axial alignment with the second surface 23 b of the second section 90 of the retaining groove.
- the first side surface 80 a , and second side surface 80 b are angled.
- the spring retainer is rotated to its installed position. It is rotated so that the retainers long axis is perpendicular to the plunger bore axis.
- a portion of the first side surface 76 a of the retainer first portion 58 overlaps said groove first surface 23 a and at least partially contacts said surface.
- the second side surface 76 b of the first retainer portion 58 overlaps and at least partially contacts said second surface 23 b of the groove.
- a rounded transition area 76 c between the first side surface 76 a and the second side surface 76 b of the retainer first portion 58 overlaps a rounded transition area 23 c between the groove first surface 23 a and groove second surface 23 b .
- the transition areas may contact each other.
- the first and second side surfaces 76 a and 76 b of the first portion 58 of the retainer are at the first side 76 of the first portion 58 .
- the first and second side surfaces can also be called first and second surfaces.
- the first groove section 86 forms a portion of the groove 22 overlapped by the first side surface 76 a , second side surface 76 b , and rounded transition area 76 c of the first retainer portion 58 .
- a portion of the retainer first side surface 80 a of the retainer second portion 60 overlaps said groove first surface 23 a and at least partially contacts said surface.
- the second side surface 80 b of the retainer second portion 60 overlaps and at least partially contacts said second surface 23 b of the groove.
- a rounded transition 80 c area between the first side surface 80 a and the second side surface 80 b of the retainer second portion overlaps 60 the rounded transition area 23 c between the groove first surface 23 a and groove second surface 23 b .
- the transition areas may contact each other.
- the second groove section 90 forms a portion of the groove overlapped by the first side surface 80 a , second side surface 80 b , and rounded transition area 80 c of the second retainer portion 60 .
- the first and second side surfaces 80 a and 80 b of the second portion 60 of the retainer are at the first side 80 of the second portion 60 .
- the first and second side surfaces can also be called first and second surfaces.
- the retainer groove 20 has a first section 86 and a second section 90 .
- the first section has a first end with opening 22 a that opens into the plunger bore transition area 70 .
- the first section 86 has second end with a second opening 22 c which opens into the valve cover bore transition area 78 .
- the valve cover bore transition area 78 can also be called the valve bore transition edge.
- the groove first section 86 has first surface 23 a which can be called a first angled surface.
- the groove first section 86 has second surface 23 b which can be called the second angled surface. The second angled surface and the first angled surface converge towards each other towards the base of the groove.
- the angle 200 formed between the groove first surface 23 a and second surface 23 b is greater than 90° and less than 180°. More usually the angle is greater than 100° and less than 150°. The angle is preferably 120° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the base of the groove is closed. At the base of the groove is the transition area 23 c which joins an end of the first surface 23 a to an end of the second surface 23 b . As known in the art the fluid end changes in size and dimension as the plunger size changes.
- the transition area 23 c is a rounded surface and has a valley.
- the second groove section 90 is of the same construction as the first groove section 86 .
- the second groove section has a first end that has a first opening 22 d that opens into the plunger bore transition area 70 .
- the second section 90 has a second end with second opening 22 b which opens into the valve cover bore transition area 78 .
- the groove second section 90 has first surface 23 a which can be called first angled surface.
- the groove second section 90 has second surface 23 b which can be called the second angled surface.
- the second surface 23 b and the first surface 23 a converge towards each other towards the base of the groove.
- the angle 200 formed between the groove first surface 23 a and second surface 23 b is between 90° and 180°
- the base of the groove is closed.
- the transition surface 23 c which joins an end of the first angled surface 23 a to an end of the second angled surface 23 b .
- the transition area is rounded and has a valley.
- the plunger bore transition area is between and coplanar with the first end of the first section 86 of the groove 22 and the first end of the second section 90 of the groove.
- the plunger bore transition area provides a groove-less gap formed as a rounded surface between the first ends.
- the valve cover bore transition area 78 is between and coplanar with the second end of the first section 86 of the groove 22 and the second end of the second section 90 of the groove 22 .
- the valve cover bore transition area 78 provides a groove-less gap formed as a rounded surface between the second ends.
- the retainer 20 has a unique construction.
- the retainer is a single monoblock piece which can be made from a single casting without machining or machined from a cylindrical bar forging.
- the retainer has a first portion 58 and a second portion 60 .
- the first portion extends from a base portion 100 at a first end 100 a of said base 100 .
- the second portion 60 extends from the base 100 portion at a second end of said base 100 b .
- the base portion has a first surface 102 a on a first side 102 of the base.
- the base first surface 102 a is flat.
- the base portion has a second surface 104 a on a second side 104 of the base.
- the base second surface is flat.
- the second side is opposite the first side.
- the first portion 58 of the retainer extending from the base 100 is angled relative to the base.
- the exterior angle 202 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°.
- the angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the retainer first portion 58 has a third surface 106 at a second side 108 of the first portion 58 .
- the third surface 106 is angled relative to the base second side surface 104 a .
- the angle 204 is greater than 90° and less than 180°. More usually the angle is greater than 100° and less than 150°.
- the angle is preferably 123° for plunger sizes from 4.5 up to 6.75 inches in diameter wherein the retainer is cast and 130° wherein the retainer is machined.
- the angle is preferably 125° for plunger sizes 3.75 & 4 inches in diameter wherein the plunger is cast.
- the angle is such that a direction going from the base along the third surface towards the first end portion 58 a of the first retainer portion 58 is away from the retainer's central axis 56 .
- the first surface 76 a of the first side 76 is also angled relative to the base first surface 102 a .
- the exterior angle 202 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°.
- the angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the surface is angled such that a direction from the base along the first surface 76 a towards the first end portion 58 a is away from the retainer central axis 56 .
- the first side 76 second surface 76 b is angled relative to the first surface 76 a .
- the exterior angle 206 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°.
- the angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the second surface is angled such that going in a direction from the first surface along the second surface towards an end edge 114 of the first end portion 58 a , the direction is towards the central axis 56 .
- the first 76 a and second 76 b surfaces of the retainer first side 76 are not flat. They are rather rounded. The rounded surfaces can be considered convex or arcuate. They have a peak.
- the transition area 76 c which joins the first surface 76 a to the second surface 76 b is rounded. It has a peak. Further, a rounded transition area 102 b with a peak joins the base first surface 102 a to the first surface 76 a .
- a rounded transition area 104 b with a valley joins the base second side surface 104 a to the first portion, third surface 106 .
- the retainer first portion has a leading edge 84 . It also has a trailing edge 85 .
- the first portion 58 second surface 76 b is angled towards the first portion third surface 106 .
- end edge 114 is formed at the closest point between the third and second surface. The end edge extends from the leading edge 84 to the trailing edge 85 . It has a peak between the trailing and leading edges.
- a fourth surface 116 of the retainer first portion 58 extends from the trailing edge to the base.
- the fourth surface 116 is bounded on one side by the third surface 106 and the opposite side by first surface 76 a , second surface 76 b and the transition area 76 c between the first and second surfaces.
- a fifth surface 118 of the retainer first portion 58 extends from the leading edge 84 to the base 100 .
- the fifth surface is bounded on one side by the third surface 106 and the opposite side by first surface 76 a , second surface 76 b and the transition area 76 c between the first and second surfaces.
- the second portion 60 of the retainer extending from the base 100 is angled relative to the base.
- the exterior angle 216 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°.
- the angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the second retainer portion 60 has a second side 126 with a third surface 124 which is angled relative to the base second side surface 104 a .
- the angle 218 is greater than 90° and less than 180°. More usually the angle is greater than 100° and less than 150°.
- the angle is preferably 123° for plunger sizes from 4.5 up to 6.75 inches in diameter wherein the retainer is cast and 130° wherein the retainer is machined.
- the angle is preferably 125° for plunger sizes 3.75 & 4 inches in diameters wherein the retainer is cast.
- the angle is such that a direction going from the base along the third surface towards the first end portion 60 a of the retainer second portion 60 is angled away from the retainer's central axis 56 .
- the retainer second portion's first surface 80 a is also angled relative to the base first surface 102 a .
- the exterior angle 216 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°.
- the angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the surface is angled such that a direction from the base along the first surface 80 a towards the first end portion 60 a of the retainer second portion 60 is away from the retainer central axis 56 .
- the retainer second portion's second surface 80 b is angled relative to the first surface 80 a .
- the exterior angle 220 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°.
- the angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter.
- the second surface is angled such that going in a direction from the first surface along the second surface towards an end edge 132 of the first end portion 60 a , the direction is towards the central axis 56 .
- the first 80 a and second 80 b surfaces of the retainer second portion 60 are not flat. They are rather rounded.
- the rounded surfaces can be considered convex or arcuate. They have a peak.
- the transition area 80 c which joins the first surface to the second surface is rounded. It has a peak.
- a rounded transition area 128 which has a peak joins the base first surface 102 a to the first surface 80 a .
- a rounded transition area 130 with a valley joins the base second side surface 104 a to the third surface 124 of the retainer second portion.
- the retainer second portion has a leading edge 88 . It also has a trailing edge 89 .
- the second surface 80 b of the retainer second portion is angled towards the third surface 124 of the retainer second portion. At the closest point between the third surface and second surface end edge 132 is formed. The end edge extends from the leading edge 88 to the trailing edge 89 . It has a peak between the trailing 89 and leading 88 edges.
- a fourth side surface 134 of the retainer second portion 60 extends from the trailing edge 89 to the base 100 .
- the fourth side surface 134 is bounded on one side by the third surface 124 and the opposite side by first surface 80 a , second surface 80 b and the transition area 80 c between the first and second surfaces.
- a fifth side surface 136 of the retainer second portion 60 extends from the leading edge 88 to the base 100 .
- the fifth side surface 136 is bounded on one side by the third surface 124 and on an opposite side by first surface 80 a , second surface 80 b and the transition area 80 c between the first and second surfaces.
- the base has a third surface 120 and an opposite fourth surface 122 .
- the fourth surface is between the base first 102 a and second 104 a surface.
- the third surface, opposite the fourth surface is between the base first and second surface.
- the fourth surface has a central portion 122 a and a first end portion 122 b angled relative to the central portion and a second end portion 122 c angled relative to the central portion.
- the angle 208 between the first end portion and the central portion is between 90° and 180°.
- the angle 210 between the central portion and the second end portion is between 90° and 180°.
- the angles between the first portion and central portion and the second portion and central portion are the same and more usually the angles 208 , 210 are greater than 100° and less than 150°.
- the angles 208 , 210 are preferably 155° for plunger bore sizes from 3.75 up to 6.75 inches in diameter.
- the third surface of the base has a central portion 120 a and a first end portion 120 b angled relative to the central portion and a second end portion 120 c angled relative to the central portion.
- the angle 212 between the first end portion 120 b and the central portion 120 a is between 90° and 180°.
- the angle 214 between the central portion 120 a and the second end portion 120 c is between 90° and 180°.
- the angles between the first portion and central portion and the second portion and central portion are the same and more usually the angles 212 , 214 are greater than 100° and less than 150°.
- the angles 212 , 214 are preferably 155° for plunger bore sizes from 3.75 up to 6.75 inches in diameter.
- the angles 208 , 210 , 212 , 214 help ensure the retainer properly abuts up against the valve cover as it tries to turn in either rotational direction.
- Spring receiving boss 82 extends outward from the base 100 first side surface 102 a along the retainer central axis 56 .
- the base third surface 120 is integral with the fourth surface 116 of the first 58 retainer portion and the fifth surface 136 of the second 60 retainer portions.
- the base fourth surface 122 is integral with the fifth surface 118 of the first retainer portion and the fourth surface 134 of the second retainer portion.
- the retainer has a second, short axis 138 , extending through the base third and fourth surfaces. It also has a first, long axis 140 , extending through the end at the end edge 114 of the retainer first portion 58 and the end at the end edge 132 of the retainer second portion 60 .
- the first axis is perpendicular to the second axis and central or third axis 56 .
- the third axis is perpendicular to the second axis.
- the second axis extends along a width of the retainer.
- the first axis extends along a length of the retainer. The length is at least twice the width.
- the distance 230 wherein the distance is taken along the direction of the suction bore axis, between the plunger's long axis and rounded transition portion 23 c as shown in FIG. 3 is 1.58 inch for plunger sizes 3.75 & 4 inches, 1.88 inch for plunger sizes 4.5 & 5 inches, 2.13 inch for plunger sizes 5.5 & 6 inches and 2.39 inch for plunger sizes 6.5 & 6.75 inches.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
- The present disclosure concerns a tapered groove in a high pressure plunger pump; the groove receives a spring retainer; the spring retainer at a first portion and a second portion is carried in the groove; the groove is configured to prevent the retainer from moving out of the groove along the long axis of the suction bore.
- Spring retainers for suction valves in high pressure plunger pumps are known. U.S. Pat. No. 7,186,097, Blume, discloses suction valve spring retainers. The retainers are for use in plunger pump housings incorporating structural features for stress relief. These pump housing structural features accommodate access bore plugs that secure suction valve spring retainers that are internally located substantially centrally over the suction bore transition area of the plunger pump housing. Access bore plugs are secured in place on the pump housing one or more threaded retainers. Plunger pumps so constructed are relatively resistant to fatigue failure because of stress reducing structural features, and they may incorporate a variety of valve styles, including top and lower stem-guided valves and crow-foot-guided valves in easily-maintained configuration. Suction valve spring retainers mounted in plunger pump housings may also incorporate a suction valve top stem-guide. Further, certain structural features of access bore plugs may be dimensioned to aid in improving volumetric efficiency of the pumps in which they are used.
- U.S. Pat. No. 6,910,871, Blume, discloses valve guide and spring retainer assemblies for use in plunger pump housings that incorporate features for stress relief. These pump housings have structural features to accommodate correspondingly shaped valve guides and/or spring retainers that are internally fixed in place using one or more non-threaded spacers.
- U.S. Pat. No. 6,544,012, Blume, discloses a Y-block fluid section plunger pump housing having a cylinder bore which is transversely elongated at its intersection with suction and discharge bores to provide stress relief and reduction in housing weight. A spoked, ring valve spring retainer further reduces stress near the bore intersection and allows use of a top stem guided suction valve. Tapered cartridge packing assemblies facilitate use of a one-piece plunger in Y-block housings and also allow packing in such housings to be changed without removing the plunger.
- One aspect of the invention is embodied by a fluid end of a plunger pump that has a plunger bore, discharge bore, suction bore, valve cover bore, and cross-bore intersection formed in portions of the fluid end. Each of the above named bores has an axis. A plunger bore transition area is at an opening of the plunger bore and also adjacent the cross-bore intersection. A valve cover bore transition area is at an opening of the valve cover bore and also adjacent the cross-bore intersection. The plunger bore and valve cover bore openings open into the cross-bore intersection. The discharge bore and suction bore each have an opening which opens into said cross-bore intersection. The suction bore axis extends through the opening of the discharge bore which opens into said cross-bore intersection. The discharge bore axis extends through the opening of the suction bore which opens into said cross-bore intersection. The valve cover bore axis extends into the opening of the plunger bore which opens into the cross-bore intersection.
- The fluid end further has a groove. The groove traverses a curvilinear path around an open space. The discharge bore and suction bore axes each extend into said open space. The groove has a first section and a second section. The first section has a first end with a first opening and a second end. The second section has a first end. The second section has a second end with an opening. The first and second sections each have a closed base opposite and an open side of each section. The first and second sections each have a first angled surface and a second angled surface. The first angled surface and second angled surface of the first section converge towards each other towards the base of the first section. The angle formed between the first angled surface and second angled surface of the first section is greater than 90° and less than 180°. The first angled surface and second angled surface of the second section converge towards each other towards the base of the second section. The angle formed between the first angled surface and second angled surface of the second section is greater than 90° and less than 180°. A gap is between said first ends of said first and second sections of the groove. A gap is between the second ends of said first and second sections of the groove.
- A further aspect of the invention is characterized in that the plunger bore transition area is between and coplanar with the first end of the first section of the groove and the first end of the second section of the groove. The valve cover bore transition area is between and coplanar with the second end of the first section of the groove and the second end of the second section of the groove.
- Yet in another aspect of the invention a first portion of a spring retainer is in the first section of the groove and a second portion of the spring retainer is in the second section of said groove.
- Another aspect of the invention is embodied in a spring retainer. The retainer has a first portion having a first side with a first surface and a second surface. The first portion has a second side with a third surface. The first surface is angled relative to the second surface. The exterior angle formed by the surfaces is greater than 180° and less than 270°. The retainer has a second portion. The second portion has a first side with a first surface and a second surface. The second portion has a second side with a third surface. The first surface of the second portion is angled relative to the second surface of the second portion. The exterior angle formed by the surfaces is greater than 180° and less than 270°.
- The retainer further has a base portion from which the first portion extends and the second portion extends. The base portion has a first surface on a first side of the base portion. The base portion has a second surface on a second side of the base. The second side is opposite the first side. The third surface of the retainer first portion is angled relative to the base second surface. The angle is greater than 90° and less than 180°. The first surface of the retainer first portion is angled relative to the base first surface. The exterior angle formed by the surfaces is between 180° and 270°. The third surface of the retainer second portion is angled relative to the base second surface. The angle is greater than 90° and less than 180°. The first surface of the retainer second portion is angled relative to the base first surface. The exterior angle formed by the surfaces is greater than 180° and less than 270°.
- In a further aspect of the invention the base of the spring retainer has a third surface. The third surface has a central portion and a first end portion angled relative to the central portion. The third surface also has a second end portion angled relative to the central portion. The angle between the first end portion and the central portion is greater than 90° and less than 180°. The angle between the central portion and the second end portion is greater than 90° and less than 180°.
- The base also has a fourth surface opposite the third surface. The fourth surface has a central portion and a first end portion angled relative to the central portion. The fourth surface also has a second end portion angled relative to the central portion. The angle between the first end portion and the central portion is greater than 90° and less than 180°. The angle between the central portion and the second end portion is greater than 90° and less than 180°. The third surface is between the base first and second surfaces. The fourth surface is between the base first and second surfaces.
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FIG. 1 is an isometric sectional view of a fluid end of a plunger pump embodying an embodiment of the present invention; wherein the section is taken through the housing of the fluid end of a plunger pump; the section being parallel to the long axis of the plunger bore, the long axis of the suction bore, and the long axis of the discharge bore; a spring retainer is disposed in and is rotatable about its central axis in the retainer groove; the view shows the spring retainer having been rotated in a first circumferential direction, counter clock-wise direction, until further rotation is prevented by abutment of a portion of the spring retainer against a portion of the valve cover; components of the fluid end have been omitted for simplicity. -
FIG. 2 is the same sectional shown inFIG. 1 except the spring retainer has been rotated in a second circumferential direction opposite from the first circumferential direction, clockwise direction, until the rotation is stopped by a portion of the spring retainer abutting up against the valve cover; -
FIG. 3 is a sectional view of the fluid end ofFIG. 1 ; the section, however, is taken perpendicular to the plunger bore and parallel to the suction and discharge bores; additionally, components of the fluid end such as the plunger, suction valve assembly and discharge valve assembly are shown; the spring retainer is shown disposed in the retainer groove holding the suction valve spring in place to bias a suction valve in the closed position against its valve seat. -
FIG. 4A is an isometric sectional view of the fluid end shown inFIG. 1 , wherein the spring retainer and valve cover have been omitted from the view; the view shows a first section of the retaining groove extending between the transition area of the plunger bore and the transition area of the valve cover bore. -
FIG. 4B is an isometric sectional view of the fluid end shown inFIG. 1 , wherein the spring retainer and valve cover have been omitted from the view; the view shows a second section of the retaining groove, radially opposite the first section of the retaining groove, extending between the transition area of the plunger bore and the transition area of the valve cover bore. -
FIGS. 4C is and 4D are blow ups of the details ofFIGS. 4A and 4B respectively; the detail shows that the retaining groove has a first surface angled in a first direction, a second surface angled in a second different direction and a rounded transition area joining the first surface to the second surface at a base of the groove; opposite the base of the groove is an open side. -
FIG. 5 is a sectional view of the fluid end shown inFIG. 1 , wherein the spring retainer and valve cover have been omitted; the view shows the retainer groove first section and second section wherein the plunger bore has a transition area which is between a first end of the first section and a second end of the second section thereby providing a break, gap or discontinuity between the retaining groove first section and the retaining groove second section; the gap is between the first and second section first ends. -
FIG. 6 is a sectional view of the fluid end shown inFIG. 5 wherein the spring retainer and valve cover have been omitted; the view shows the retainer groove first section and second section wherein the valve cover bore has a transition area which is between the first section and the second section thereby providing a break, gap or discontinuity between the retaining groove first section and the retaining groove second section; the gap is between the first and second section second ends. -
FIGS. 7A through 7H show various views of the spring retainer shown inFIG. 1 ;FIG. 7A is a top view;FIG. 7B is a right-sided isometric view;FIG. 7C is a right-sided view;FIG. 7D is a left-sided view;FIG. 7E is a front-side view;FIG. 7F is a back-side view;FIG. 7G is a bottom view; andFIG. 7H is a left-side isometric view. -
FIG. 8 is an isometric sectional view of the fluid end shown inFIG. 4A wherein the spring retainer is aligned so that a first retainer portion is disposed between the first ends of the first and second groove sections; a second retainer portion is disposed between the second ends of the first and second groove sections; the first retainer portion is seating against the plunger bore transition area; the second retainer portion is seating against the valve cover bore transition area; the valve cover is not present; the retainer spring is compressed. -
FIG. 9 is a cutaway isometric sectional view of the fluid end shown inFIG. 8 wherein the spring coupled to the spring retainer and valve is compressed; the valve is in the closed position; the spring has been rotated to an installed position where the retainer's long axis is perpendicular to the plunger bore axis. - While embodiments of this invention can take many different forms, specific embodiments thereof are shown in the drawings and will be described herein in detail with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention, and is not intended to limit the invention to the specific embodiment illustrated.
- With reference to
FIGS. 1 , 2 and 3, the general operation of the high pressure pump and the function of theretainer ring 20 andgroove 22 can be understood. The retainer ring can also be called aspring retainer 20. Theplunger 24 shown inFIG. 3 reciprocates in afirst direction 26 and an oppositesecond direction 28 along thelong axis 30 of the plunger bore 32. The long axis extends along the length of the plunger bore. As theplunger 24 reciprocates in thefirst direction 26 away from thevalve cover 34, fluid is sucked into suction bore 36 through afluid inlet 38.Suction valve 40, normally in the closed position, moves off itsvalve seat 42 towards thespring retainer 20. Fluid then passes over the spring retainer into thecross bore intersection 44. Theplunger 24 then reciprocates in the oppositesecond direction 28 along the plunger borelong axis 30 toward thevalve cover 34. The reciprocation causes the fluid to exit thefluid end 54 through discharge bore 46. The fluid exits the discharge bore by pushingdischarge valve 48 off itsvalve seat 50 and exiting the discharge bore through afluid outlet 52. As theplunger 24 reciprocates, fluid is drawn into thefluid end 54 and ejected from thefluid end 54. As can be seen the fluid end is a single monoblock piece machined from a single casting or forging. - The forces of the fluid may cause the
spring retainer 20 to rotate about the retainercentral axis 56. The central axis can also be called a third axis of the spring retainer. The retainer, however, is prevented by thevalve cover 34 from rotating in a manner which enables thefirst end portion 58 a of thefirst retainer portion 58 or thefirst end portion 60 a of thesecond retainer portion 60 to be in a position such that the plunger will contact these end portions or any other portions of the retainer. Thevalve cover 34 extends through the valve cover bore 34 a and overlaps a valve cover boretransition area 78. The valvecover transition area 78 is between a second end offirst groove section 86 and a second end of asecond section 90. The valve cover boretransition area 78 is coplanar with the second ends of the first andsecond groove sections transition area 78 is also coplanar withgroove 22. The valve cover is thus in the path of rotation of theretainer 20. The cover provides an abutment to prevent 360° rotation of the spring retainer in either the clockwise or counter clockwise direction. - The configuration of the
groove 22 and theretainer 20 further prevent theretainer 20 from moving in afirst direction 62 along thelong axis 64 of the suction bore 36 towards the discharge bore 46. The configuration of thegroove 22 and theretainer 20 further prevent theretainer 20 from moving in asecond direction 66 along thelong axis 68 of the discharge bore 46 towards thesuction valve 40. This further ensures that theend portions retainer 20 and all other portions of theretainer 20 remain outside of the pathway of theplunger 24 so that theplunger 24 does not contact theretainer 20 during its reciprocation. Therefore, the configuration of thegroove 22 and the configuration of the portions of theretainer 20 in thegroove 22 cooperate such that theretainer 20 will not slip out of thegroove 22. The retainer will not slip out of thegroove 22 in thedirection 62 of thedischarge valve 48 along thelong axis 64 of the suction bore. It will also not slip out of the groove in thedirection 66 along discharge borelong axis 68 towards the suction borevalve 40. The discharge bore long axis extends along the length of the discharge bore. The suction bore long axis extends along the length of the suction bore. - The valve cover bore, suction bore, discharge bore, and plunger bore each have an opening, 34 b, 36 a, 46 a and 32 a which opens into the
cross-bore intersection 44. The valve cover boretransition area 78 is at the valve cover boreopening 34 b. The plunger boretransition area 70 is at the plunger bore opening 32 a. The suction boreaxis 64 extends through the opening of the discharge bore opening 46 a. The discharge boreaxis 68 extends though the opening 36 a of the suction bore. The valve cover borecentral axis 34 c extends through opening 32 a in the plunger bore. The plunger boreaxis 30 extends through opening 34 b of the valve cover bore. - Referring to
FIGS. 1-3 and 8 and 9 we can understand the ease with which thespring retainer 20 can be installed in the retaininggroove 22. To place the spring retainer in the installed position, thesuction valve 40 andvalve seat 42 are installed in the suction bore 36. Thevalve cover 34 is not yet installed. Theplunger 24 is not in thecross bore intersection 44 or overlapping the plungerbore transition area 70.Spring 72 is disposed so that oneend 72 a of the spring is seated on thevalve 40. It is seated around thevalve boss 74. The portion of the valve which supports the spring can be called a spring support. Thespring retainer 20 is oriented to be placed in a first position. The first position can be called a drop in position or pre-installed position. To place the spring retainer in the first position,first retainer portion 58 of the spring retainer is aligned with the plunger boretransition 70 area so it overlaps the transition area. Simultaneously with aligning the first portion with the plunger bore transition area, secondspring retainer portion 60 is aligned with the valve cover boretransition area 78 so it overlaps the transition area. Simultaneously with the alignment of the first portion with the plunger bore transition area and the second portion with the valve cover bore transition area, aboss 82 extending along thecentral axis 56 is aligned and inserted into anend 72 b ofcompression spring 72. Alternatively, the boss could be a recessed area which receives the second end of the compression spring. The portion of the retainer which supports the second end of the spring can generally be called a spring support. Once the spring retainer is aligned as described above, an installer pushes thespring retainer 20 along the suction borelong axis 64 towards thesuction valve 40. Pushing in the axial direction compresses the spring. The installer moves thespring retainer 20 in the axial direction towards thesuction valve 40 until an abutment between retainerfirst portion 58 and theplunger transition area 70 and retainersecond portion 60 and valve cover boretransition area 78 prevent further axial movement of thespring retainer 20. The valve cover andplunger transition areas leading edge 84 of thefirst retainer portion 58 of the retainer is brought to be adjacent anopening 22 a of the groove. The opening 22 a is at the first end of thefirst groove section 86. The rotation also causes a leadingedge 88 of the retainersecond portion 60 to be adjacent theopening 22 b in thegroove 22. The opening is at the second end of thesecond groove section 90. During rotation, the installer maintains thespring retainer 20 so itsfirst portion 58 is abutted by the plungerbore transition area 70 and itssecond portion 60 is abutted by the valve cover boretransition area 78. Theretainer 20 is as axially close to thesuction valve 40 as permitted by the construction of thetransition areas retainer groove 22. Immediately prior to insertion of thefirst end portion 58 a of the retainerfirst portion 58, which includes the leadingedge 84, into the opening 22 a at the first end of thefirst groove section 86, thespring retainer 20 can be said to be in an aligned position. Also immediately prior to insertion of thefirst end portion 60 a of the retainersecond portion 60, which includes the leadingedge 88 of thesecond portion 60, into theopening 22 b at the second end of thesecond section 90, thespring retainer 20 can be said to be in the aligned position. The aligned first position can also be called the aligned drop in position or the aligned pre-installation position. Additionally in the aligned position, a portion of thefirst side surface 76 a of the retainerfirst portion 58 is in axial alignment with afirst surface 23 a of thefirst section 86 of the retaininggroove 22. Thefirst surface 23 a of thefirst section 86 of the retaininggroove 22 is angled. Additionally, at least a portion of asecond side surface 76 b of the retainerfirst portion 58 is in axial alignment with asecond surface 23 b of thefirst section 86 of the retaininggroove 22. Thesecond surface 23 b is angled. Thefirst side surface 76 a andsecond side surface 76 b are angled. The spring retainer in the aligned position is also oriented such a portion of thefirst side surface 80 a of thesecond portion 60 of thespring retainer 20 is in axial alignment with thefirst surface 23 a of thesecond section 90 of the retaininggroove 22. Additionally, at least a portion of asecond side surface 80 b of the retainersecond portion 60 is in axial alignment with thesecond surface 23 b of thesecond section 90 of the retaining groove. Thefirst side surface 80 a, andsecond side surface 80 b are angled. - From the alignment position the spring retainer is rotated to its installed position. It is rotated so that the retainers long axis is perpendicular to the plunger bore axis. In the installed position, a portion of the
first side surface 76 a of the retainerfirst portion 58 overlaps said groovefirst surface 23 a and at least partially contacts said surface. Thesecond side surface 76 b of thefirst retainer portion 58 overlaps and at least partially contacts saidsecond surface 23 b of the groove. Further, arounded transition area 76 c between thefirst side surface 76 a and thesecond side surface 76 b of the retainerfirst portion 58 overlaps arounded transition area 23 c between the groovefirst surface 23 a and groovesecond surface 23 b. The transition areas may contact each other. The first and second side surfaces 76 a and 76 b of thefirst portion 58 of the retainer are at thefirst side 76 of thefirst portion 58. The first and second side surfaces can also be called first and second surfaces. Thefirst groove section 86 forms a portion of thegroove 22 overlapped by thefirst side surface 76 a,second side surface 76 b, androunded transition area 76 c of thefirst retainer portion 58. - Also in the installed position, a portion of the retainer
first side surface 80 a of the retainersecond portion 60 overlaps said groovefirst surface 23 a and at least partially contacts said surface. Thesecond side surface 80 b of the retainersecond portion 60 overlaps and at least partially contacts saidsecond surface 23 b of the groove. Further, arounded transition 80 c area between thefirst side surface 80 a and thesecond side surface 80 b of the retainer second portion overlaps 60 the roundedtransition area 23 c between the groovefirst surface 23 a and groovesecond surface 23 b. The transition areas may contact each other. Thesecond groove section 90 forms a portion of the groove overlapped by thefirst side surface 80 a,second side surface 80 b, androunded transition area 80 c of thesecond retainer portion 60. The first and second side surfaces 80 a and 80 b of thesecond portion 60 of the retainer are at thefirst side 80 of thesecond portion 60. The first and second side surfaces can also be called first and second surfaces. Once the retainer is in the installed position thevalve cover 34 is installed. Theplunger 24 may also be allowed to reciprocate freely in the plunger bore. - In more detail, the
retainer groove 20, as stated has afirst section 86 and asecond section 90. The first section has a first end with opening 22 a that opens into the plungerbore transition area 70. Thefirst section 86 has second end with asecond opening 22 c which opens into the valve cover boretransition area 78. The valve cover boretransition area 78 can also be called the valve bore transition edge. The groovefirst section 86 hasfirst surface 23 a which can be called a first angled surface. The groovefirst section 86 hassecond surface 23 b which can be called the second angled surface. The second angled surface and the first angled surface converge towards each other towards the base of the groove. Theangle 200 formed between the groovefirst surface 23 a andsecond surface 23 b is greater than 90° and less than 180°. More usually the angle is greater than 100° and less than 150°. The angle is preferably 120° for plunger sizes from 3.75 up to 6.75 inches in diameter. The base of the groove is closed. At the base of the groove is thetransition area 23 c which joins an end of thefirst surface 23 a to an end of thesecond surface 23 b. As known in the art the fluid end changes in size and dimension as the plunger size changes. Thetransition area 23 c is a rounded surface and has a valley. - The
second groove section 90 is of the same construction as thefirst groove section 86. The second groove section has a first end that has afirst opening 22 d that opens into the plungerbore transition area 70. Thesecond section 90 has a second end withsecond opening 22 b which opens into the valve cover boretransition area 78. The groovesecond section 90 hasfirst surface 23 a which can be called first angled surface. The groovesecond section 90 hassecond surface 23 b which can be called the second angled surface. Thesecond surface 23 b and thefirst surface 23 a converge towards each other towards the base of the groove. Theangle 200 formed between the groovefirst surface 23 a andsecond surface 23 b is between 90° and 180° - The base of the groove is closed. At the base of the groove is the
transition surface 23 c which joins an end of the firstangled surface 23 a to an end of the secondangled surface 23 b. The transition area is rounded and has a valley. Although the first angled surface, second angled surface and rounded transition area of the first andsecond groove sections - Notably the plunger bore transition area is between and coplanar with the first end of the
first section 86 of thegroove 22 and the first end of thesecond section 90 of the groove. The plunger bore transition area provides a groove-less gap formed as a rounded surface between the first ends. Also the valve cover boretransition area 78 is between and coplanar with the second end of thefirst section 86 of thegroove 22 and the second end of thesecond section 90 of thegroove 22. The valve cover boretransition area 78 provides a groove-less gap formed as a rounded surface between the second ends. - As can be seen in
FIGS. 7A-7H , theretainer 20 has a unique construction. The retainer is a single monoblock piece which can be made from a single casting without machining or machined from a cylindrical bar forging. As stated, the retainer has afirst portion 58 and asecond portion 60. The first portion extends from abase portion 100 at afirst end 100 a of saidbase 100. Thesecond portion 60 extends from the base 100 portion at a second end of saidbase 100 b. The base portion has afirst surface 102 a on afirst side 102 of the base. The basefirst surface 102 a is flat. The base portion has asecond surface 104 a on asecond side 104 of the base. The base second surface is flat. The second side is opposite the first side. Thefirst portion 58 of the retainer extending from thebase 100 is angled relative to the base. Theexterior angle 202 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°. The angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter. The retainerfirst portion 58 has athird surface 106 at asecond side 108 of thefirst portion 58. Thethird surface 106 is angled relative to the basesecond side surface 104 a. Theangle 204 is greater than 90° and less than 180°. More usually the angle is greater than 100° and less than 150°. The angle is preferably 123° for plunger sizes from 4.5 up to 6.75 inches in diameter wherein the retainer is cast and 130° wherein the retainer is machined. The angle is preferably 125° for plunger sizes 3.75 & 4 inches in diameter wherein the plunger is cast. The angle is such that a direction going from the base along the third surface towards thefirst end portion 58 a of thefirst retainer portion 58 is away from the retainer'scentral axis 56. Thefirst surface 76 a of thefirst side 76 is also angled relative to the basefirst surface 102 a. Theexterior angle 202 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°. The angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter. The surface is angled such that a direction from the base along thefirst surface 76 a towards thefirst end portion 58 a is away from the retainercentral axis 56. Thefirst side 76second surface 76 b is angled relative to thefirst surface 76 a. Theexterior angle 206 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°. The angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter. The second surface is angled such that going in a direction from the first surface along the second surface towards anend edge 114 of thefirst end portion 58 a, the direction is towards thecentral axis 56. The first 76 a and second 76 b surfaces of the retainerfirst side 76 are not flat. They are rather rounded. The rounded surfaces can be considered convex or arcuate. They have a peak. Thetransition area 76 c which joins thefirst surface 76 a to thesecond surface 76 b is rounded. It has a peak. Further, arounded transition area 102 b with a peak joins the basefirst surface 102 a to thefirst surface 76 a. Also, arounded transition area 104 b with a valley joins the basesecond side surface 104 a to the first portion,third surface 106. As stated, the retainer first portion has aleading edge 84. It also has a trailingedge 85. - The
first portion 58second surface 76 b is angled towards the first portionthird surface 106. At the closest point between the third and second surface,end edge 114 is formed. The end edge extends from the leadingedge 84 to the trailingedge 85. It has a peak between the trailing and leading edges. - A
fourth surface 116 of the retainerfirst portion 58 extends from the trailing edge to the base. Thefourth surface 116 is bounded on one side by thethird surface 106 and the opposite side byfirst surface 76 a,second surface 76 b and thetransition area 76 c between the first and second surfaces. - A
fifth surface 118 of the retainerfirst portion 58 extends from the leadingedge 84 to thebase 100. The fifth surface is bounded on one side by thethird surface 106 and the opposite side byfirst surface 76 a,second surface 76 b and thetransition area 76 c between the first and second surfaces. - The
second portion 60 of the retainer extending from thebase 100 is angled relative to the base. Theexterior angle 216 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°. The angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter. Thesecond retainer portion 60 has asecond side 126 with athird surface 124 which is angled relative to the basesecond side surface 104 a. Theangle 218 is greater than 90° and less than 180°. More usually the angle is greater than 100° and less than 150°. The angle is preferably 123° for plunger sizes from 4.5 up to 6.75 inches in diameter wherein the retainer is cast and 130° wherein the retainer is machined. The angle is preferably 125° for plunger sizes 3.75 & 4 inches in diameters wherein the retainer is cast. The angle is such that a direction going from the base along the third surface towards thefirst end portion 60 a of the retainersecond portion 60 is angled away from the retainer'scentral axis 56. The retainer second portion'sfirst surface 80 a is also angled relative to the basefirst surface 102 a. Theexterior angle 216 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°. The angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter. The surface is angled such that a direction from the base along thefirst surface 80 a towards thefirst end portion 60 a of the retainersecond portion 60 is away from the retainercentral axis 56. The retainer second portion'ssecond surface 80 b is angled relative to thefirst surface 80 a. Theexterior angle 220 is greater than 180° and less than 270°. More usually the angle is greater than 200° and less than 250°. The angle is preferably 240° for plunger sizes from 3.75 up to 6.75 inches in diameter. The second surface is angled such that going in a direction from the first surface along the second surface towards anend edge 132 of thefirst end portion 60 a, the direction is towards thecentral axis 56. The first 80 a and second 80 b surfaces of the retainersecond portion 60 are not flat. They are rather rounded. The rounded surfaces can be considered convex or arcuate. They have a peak. Thetransition area 80 c which joins the first surface to the second surface is rounded. It has a peak. Further, arounded transition area 128 which has a peak joins the basefirst surface 102 a to thefirst surface 80 a. Also, arounded transition area 130 with a valley joins the basesecond side surface 104 a to thethird surface 124 of the retainer second portion. As stated, the retainer second portion has aleading edge 88. It also has a trailingedge 89. - The
second surface 80 b of the retainer second portion is angled towards thethird surface 124 of the retainer second portion. At the closest point between the third surface and secondsurface end edge 132 is formed. The end edge extends from the leadingedge 88 to the trailingedge 89. It has a peak between the trailing 89 and leading 88 edges. - A
fourth side surface 134 of the retainersecond portion 60 extends from the trailingedge 89 to thebase 100. Thefourth side surface 134 is bounded on one side by thethird surface 124 and the opposite side byfirst surface 80 a,second surface 80 b and thetransition area 80 c between the first and second surfaces. - A
fifth side surface 136 of the retainersecond portion 60 extends from the leadingedge 88 to thebase 100. Thefifth side surface 136 is bounded on one side by thethird surface 124 and on an opposite side byfirst surface 80 a,second surface 80 b and thetransition area 80 c between the first and second surfaces. - The base has a
third surface 120 and an oppositefourth surface 122. The fourth surface is between the base first 102 a and second 104 a surface. The third surface, opposite the fourth surface, is between the base first and second surface. The fourth surface has acentral portion 122 a and afirst end portion 122 b angled relative to the central portion and asecond end portion 122 c angled relative to the central portion. Theangle 208 between the first end portion and the central portion is between 90° and 180°. Theangle 210 between the central portion and the second end portion is between 90° and 180°. The angles between the first portion and central portion and the second portion and central portion are the same and more usually theangles angles - The third surface of the base has a
central portion 120 a and afirst end portion 120 b angled relative to the central portion and asecond end portion 120 c angled relative to the central portion. Theangle 212 between thefirst end portion 120 b and thecentral portion 120 a is between 90° and 180°. Theangle 214 between thecentral portion 120 a and thesecond end portion 120 c is between 90° and 180°. The angles between the first portion and central portion and the second portion and central portion are the same and more usually theangles angles angles -
Spring receiving boss 82 extends outward from the base 100first side surface 102 a along the retainercentral axis 56. - Notably the base
third surface 120 is integral with thefourth surface 116 of the first 58 retainer portion and thefifth surface 136 of the second 60 retainer portions. The basefourth surface 122 is integral with thefifth surface 118 of the first retainer portion and thefourth surface 134 of the second retainer portion. - In addition to a central axis, the retainer has a second,
short axis 138, extending through the base third and fourth surfaces. It also has a first,long axis 140, extending through the end at theend edge 114 of the retainerfirst portion 58 and the end at theend edge 132 of the retainersecond portion 60. The first axis is perpendicular to the second axis and central orthird axis 56. The third axis is perpendicular to the second axis. The second axis extends along a width of the retainer. The first axis extends along a length of the retainer. The length is at least twice the width. - The
distance 230, wherein the distance is taken along the direction of the suction bore axis, between the plunger's long axis androunded transition portion 23 c as shown inFIG. 3 is 1.58 inch for plunger sizes 3.75 & 4 inches, 1.88 inch for plunger sizes 4.5 & 5 inches, 2.13 inch for plunger sizes 5.5 & 6 inches and 2.39 inch for plunger sizes 6.5 & 6.75 inches. - All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive.
- Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each feature disclosed is one example only of a generic series of equivalent or similar features.
- The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any accompanying claims, abstract and drawings), or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
Claims (29)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/646,170 US20140086774A1 (en) | 2012-09-24 | 2012-10-05 | Fluid end of a high pressure plunger pump having a groove adapted to receive a spring retainer of a suction valve |
US13/773,271 US20140083541A1 (en) | 2012-09-24 | 2013-02-21 | Fluid end of a high pressure pump having a groove adapted to receive a spring retainer of a suction valve |
US15/155,540 US9732746B2 (en) | 2012-09-24 | 2016-05-16 | Fluid end of a high pressure plunger pump |
US15/661,610 US20170321691A1 (en) | 2012-09-24 | 2017-07-27 | Fluid end of a high pressure plunger pump |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261704905P | 2012-09-24 | 2012-09-24 | |
US13/646,170 US20140086774A1 (en) | 2012-09-24 | 2012-10-05 | Fluid end of a high pressure plunger pump having a groove adapted to receive a spring retainer of a suction valve |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/773,271 Continuation-In-Part US20140083541A1 (en) | 2012-09-24 | 2013-02-21 | Fluid end of a high pressure pump having a groove adapted to receive a spring retainer of a suction valve |
US15/155,540 Continuation US9732746B2 (en) | 2012-09-24 | 2016-05-16 | Fluid end of a high pressure plunger pump |
Publications (1)
Publication Number | Publication Date |
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US20140086774A1 true US20140086774A1 (en) | 2014-03-27 |
Family
ID=50339036
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/646,170 Abandoned US20140086774A1 (en) | 2012-09-24 | 2012-10-05 | Fluid end of a high pressure plunger pump having a groove adapted to receive a spring retainer of a suction valve |
US15/155,540 Active US9732746B2 (en) | 2012-09-24 | 2016-05-16 | Fluid end of a high pressure plunger pump |
US15/661,610 Abandoned US20170321691A1 (en) | 2012-09-24 | 2017-07-27 | Fluid end of a high pressure plunger pump |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/155,540 Active US9732746B2 (en) | 2012-09-24 | 2016-05-16 | Fluid end of a high pressure plunger pump |
US15/661,610 Abandoned US20170321691A1 (en) | 2012-09-24 | 2017-07-27 | Fluid end of a high pressure plunger pump |
Country Status (2)
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US (3) | US20140086774A1 (en) |
CA (1) | CA2792751C (en) |
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Also Published As
Publication number | Publication date |
---|---|
US9732746B2 (en) | 2017-08-15 |
US20160258432A1 (en) | 2016-09-08 |
CA2792751A1 (en) | 2014-03-24 |
CA2792751C (en) | 2018-03-20 |
US20170321691A1 (en) | 2017-11-09 |
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Owner name: TCM INVESTMENTS, INC., OKLAHOMA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHANDRASEKARAN, ARUN NEHANDRA RAJ;DEGGINGER, CHRISTOPHER DOUGLAS;HASH, GREGORY DAVID;REEL/FRAME:029085/0694 Effective date: 20120927 |
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Owner name: GARDNER DENVER, INC., PENNSYLVANIA Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBER FROM 13923151 TO 13646170 PREVIOUSLY RECORDED ON REEL 029085 FRAME 0817. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNOR:TCM INVESTMENTS, INC.;REEL/FRAME:029143/0531 Effective date: 20121004 Owner name: TCM INVESTMENTS, INC., OKLAHOMA Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE APPLICATION NUMBER FROM 13923151 TO 13646170 PREVIOUSLY RECORDED ON REEL 029085 FRAME 0694. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNORS:CHANDRASEKARAN, ARUN NAHENDRA RAJ;DEGGINGER, CHRISTOPHER DOUGLAS;NASH, GREGORY DAVID;REEL/FRAME:029125/0382 Effective date: 20120927 |
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Owner name: TCM INVESTMENTS, INC., OKLAHOMA Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNOR FROM CHANDRASEKARAN, ARUN NEHANDRA RAJ TO CHANDRASEKARAN, ARUN NAHENDRA RAJ. PREVIOUSLY RECORDED ON REEL 029085 FRAME 0694. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT;ASSIGNORS:CHANDRASEKARAN, ARUN NAHENDRA RAJ;DEGGINGER, CHRISTOPHER DOUGLAS;HASH, GREGORY DAVID;REEL/FRAME:029147/0924 Effective date: 20120927 |
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