CN107923541A

CN107923541A - Valve for reciprocating pump component

Info

Publication number: CN107923541A
Application number: CN201680049682.2A
Authority: CN
Inventors: J.A.贝尤克; C.汉斯莱
Original assignee: SPM Flow Control Inc
Current assignee: SPM Oil and Gas Inc
Priority date: 2015-07-02
Filing date: 2016-07-01
Publication date: 2018-04-17
Also published as: CA2991124C; CA2991124A1; WO2017004572A2; WO2017004572A3

Abstract

Valve member includes valve body and seal.Valve body limits the first fi-ustoconical surface and outer annular cavity.Seal extends in exterior annular housing and the first tapered and circumferentially extending surface including being configured to sealingly engage with the tapered surface of valve seat.On the other hand, seal includes annular bulbous protrusion, and first is tapered and circumferentially extending surface obliquely extends from the annular bulbous protrusion, and first is tapered and circumferentially extend surface and extend between annular bulbous protrusion and the first fi-ustoconical surface of valve body.On the other hand, offset distance is limited between the first fi-ustoconical surface of valve body and first tapered and circumferentially extending surface at least a portion of seal, which upwardly extends in the side of at least the first fi-ustoconical surface perpendicular to valve body.

Description

Valve for reciprocating pump component

Cross reference to related applications

The priority for the U. S. application the 62/188th, 248 submitted this application claims on July 2nd, 2015, its entire disclosure Content is incorporated herein by reference.

The application also requires the applying date of the U.S. Application No. 62/300,343 submitted for 26th for 2 months in 2016, it is all public It is incorporated herein by reference to open content.

The application is the U. S. application No.29/556 submitted on 2 26th, 2016,055 part continuation application, its whole Disclosure is incorporated herein by reference.

Technical field

The present invention relates generally to pump group part, and more particularly to the valve for reciprocating pump component.

Background technology

The inlet valve and outlet valve that reciprocating pump component generally includes fluid end block and is disposed therein.In operating process In, inlet and outlet valve is typically subjected to high load and frequency.In some cases, the valve seat of inlet valve and outlet valve and by The corresponding valve member for being configured to engage can suffer from the cyclic loading of high concentration, and therefore can suffer from wearing and damaging Bad and fatigue failure.Therefore, it is necessary to solve the device or method of one or more foregoing problems and/or other problems.

The content of the invention

In the first aspect, there is provided a kind of for the inlet valve of reciprocating pump component or the valve member of outlet valve.The valve Component includes the valve body for limiting the first frusto-conical surface and the second frusto-conical surface；The outer annular chamber formed in valve body Body；And the seal extended in the outer annular cavity, the seal limit be configured to the inlet valve or The tapered and circumferentially extending surface that the tapered surface of the valve seat of outlet valve sealingly engages；Second wherein limited by the valve body Frusto-conical surface is in the first frusto-conical surface limited by the valve body and the tapered and circumferentially extending table of the seal Obliquely extend between face.

In the exemplary embodiment, seal further includes annular bulbous protrusion, and tapered and circumferentially extending surface is from the ring Shape bulbous protrusion obliquely extends, which terminates at or near the second frusto-conical surface limited by valve body.

In another illustrative embodiments, valve body limits top surface；Wherein described seal, which further includes, is formed in it Passage in outer surface；And wherein described passage be arranged on the top surface of the valve body and the annular bulbous protrusion it Between.

In another illustrative embodiments, outer annular cavity limits first and second and tilts extensional surface；And Wherein described valve member further comprises：Annular groove, the annular groove tilt extensional surface described first and second Intersection is formed in the valve body；And the ring-type element for being arranged in the annular groove and being engaged with the seal.

In some illustrative embodiments, valve member includes base portion, and valve body extends from the base portion, wherein the first of valve body Frusto-conical surface obliquely extends between base portion and the second frusto-conical surface of valve body；And it is multiple from the base portion simultaneously The circumferentially-spaced supporting leg opened away from valve body extension, wherein the supporting leg is configured to slidably engage the valve seat Another surface.

In the exemplary embodiment, base portion is the disc shaped base on the convex surface for defining circumferentially extending.

In another illustrative embodiments, valve member limits and is configured to first coaxial with the second axis of valve seat Axis；First frusto-conical surface of wherein described valve body limits the first angle from the first axle；It is and wherein described Second frusto-conical surface of valve body limits the second angle from the second axis.

In another exemplary embodiment, first angle is more than second angle.

In some illustrative embodiments, second angle is configured to be substantially equal to and is limited by the tapered surface of valve seat And the taper angle measured from the second axis of valve seat；And wherein described second angle is about 50 degree.

In the exemplary embodiment, valve body limits the first surface product for being configured to contact with the tapered surface of valve seat； Wherein described seal limits the second surface product for being configured to contact with the tapered surface of the valve seat；And wherein described The ratio of one surface area and second surface product is in the range of about 0.9 to about 1.2.

In another illustrative embodiments, which is about 1.

In another illustrative embodiments, the second frusto-conical surface that offset distance is limited in valve body and by sealing Limited between tapered and circumferentially extending surface at least a portion that part limits.

In another illustrative embodiments, offset distance is perpendicular at least on the direction of the second frusto-conical surface Extension.

In some illustrative embodiments, the scope of offset distance from more than 0 inch to about 0.1 inch.

In the exemplary embodiment, the second frusto-conical surface for being limited by valve body and by limit tapered of seal and At least a portion on circumferentially extending surface is spaced apart with parallel relation；The second frustum of a cone table wherein by being limited in the valve body Limited between parallel interval between face and tapered and circumferentially extending surface at least a portion limited by the seal inclined Move distance.

In another exemplary embodiment, offset distance scope from more than 0 inch to about 0.1 inch.

In some illustrative embodiments, valve member limits and is configured to the first axle coaxial with the second axis of valve seat Line；The second frusto-conical surface wherein limited from the first angle of first axle measurement by the valve body limits；Wherein Tapered and circumferentially extending surface at least a portion limited from the second angle of first axle measurement by the seal Limit；Wherein described first angle and the second angle are of substantially equal；And wherein each first angle and described second It is configured to be substantially equal in angle and is limited by the tapered surface of the valve seat and measured from the second axis of the valve seat Taper angle.

In an illustrative embodiments, seal further defines another tapered and circumferentially extending surface, its Obliquely extend with circumferentially extending surface from first limited by seal is tapered.

In another illustrative embodiments, seal it is another it is tapered and circumferentially extending surface extension terminate at by At or near the second frusto-conical surface that valve body limits.

In another illustrative embodiments, the circular contact portion of seal by the first of seal and another gradually The intersection to contract between circumferentially extending surface limits, and the circular contact portion include the seal first gradually Contracting and at least a portion on circumferentially extending surface.

In some illustrative embodiments, valve member limits and is configured to the first axle coaxial with the second axis of valve seat Line；The second frusto-conical surface wherein limited from the first angle of first axle measurement by the valve body limits；Wherein From the first axle measurement second angle by the seal first it is tapered and circumferentially extending surface limit；Wherein from institute State another tapered and circumferentially extending surface restriction that the third angle of first axle measurement is limited by the seal；Wherein institute State first angle and the second angle is of substantially equal；And wherein described third angle is more than the first angle and described the Each in two angles.

In the exemplary embodiment, valve member includes the rupture disc assembly engaged with valve body.

In another illustrative embodiments, valve member limits and is configured to first coaxial with the second axis of valve seat Axis；Counterbore is wherein formed in the valve body, the counterbore is substantially coaxial with the first axle, and the counterbore includes expanding Diameter portion and reduced diameter portion point, the reduced diameter portion point limit fluid passage；Wherein described counterbore is limited to the expansion The interior shoulder radially extended between diameter portion and reduced diameter portion point；And wherein described rupture disc assembly includes being arranged on The safety plate engaged in the enlarged diameter portion and with the interior shoulder；And sealingly engage at least safety plate and interior shoulder Lip ring.

In another exemplary embodiment, safety plate includes the annular mounting portion being arranged in enlarged diameter portion, Shoulder in one end engagement of annular mounting portion；Arch broken portion, the annular mounting portion are circumferentially extended along it；And shape Into the circular passage in the end engaged with the interior shoulder of the annular mounting portion；Wherein described lip ring exists Extend in the circular passage and sealingly engage at least described annular mounting portion and the interior shoulder.

In second aspect, there is provided it is a kind of for the inlet valve of reciprocating pump component or the valve member of outlet valve, it is described Valve member includes valve body；The outer annular cavity formed in valve body；And the sealing extended in the outer annular cavity Part, the seal limit the tapered and circumferential of the tapered surface for the valve seat for being adapted to sealingly engage the inlet valve or outlet valve Extensional surface；Wherein described seal includes annular bulbous protrusion, and described tapered and circumferentially extending surface is spherical from the annular Projection obliquely extends.

In the exemplary embodiment, valve body limits top surface；Wherein described seal, which further includes, is formed in its outer surface In passage；And wherein described passage is arranged between the top surface of the valve body and the annular bulbous protrusion.

In another illustrative embodiments, outer annular cavity limits the first and second surfaces for tilting extension；And And wherein described valve member further comprises：Annular groove, it is in the intersecting of the described first and second surfaces obliquely extended Place is formed in the valve body；And the ring-type element for being arranged in the annular groove and being engaged with the seal.

In another exemplary embodiment, valve body limits the first and second frusto-conical surfaces；Wherein by the valve body The second frusto-conical surface limited in the first frusto-conical surface for being limited by the valve body and the tapered of the seal and Circumferentially extending obliquely extends between surface；And wherein described valve member further comprises：Base portion, the valve body is from the base portion Extension, wherein the first frusto-conical surface of the valve body tilts between base portion and the second frusto-conical surface of the valve body Ground extends；And multiple circumferentially-spaced supporting legs opened from base portion extension and away from the valve body, wherein the supporting leg quilt It is configured to slidably engage another surface of the valve seat.

In some illustrative embodiments, base portion is the disc shaped base on the convex surface for defining circumferentially extending.

In the exemplary embodiment, valve member limits and is configured to the first axle coaxial with the second axis of valve seat； First frusto-conical surface of wherein described valve body limits the first angle from first axle measurement；And wherein described valve body Second frusto-conical surface limits the second angle from second axis measurement.

In another illustrative embodiments, first angle is more than second angle.

In another illustrative embodiments, second angle is configured to be substantially equal to the tapered surface limit by valve seat The taper angle that fixed and from valve seat second axis measures；And wherein described second angle is 50 degree.

In some illustrative embodiments, valve body limits the first surface area for the tapered surface for being configured to contact valve seat Domain；Wherein described seal limits the second surface region for the tapered surface for being configured to contact the valve seat；And wherein institute State first surface and accumulate the ratio with second surface product in the range of about 0.9 to about 1.2.

In the exemplary embodiment, which is about 1.

In another illustrative embodiments, valve body limits frusto-conical surface；Wherein limited by the seal Tapered and circumferentially extending surface between the annular bulbous protrusion and the frusto-conical surface limited by the valve body obliquely Extension；Wherein in the frusto-conical surface limited by the valve body and the tapered and circumferentially extending surface limited by the seal At least a portion between limit offset distance.

In another exemplary embodiment, offset distance is upwardly extended perpendicular to the side of at least frusto-conical surface.

In the exemplary embodiment, the frusto-conical surface that is limited by valve body and limited by seal tapered and circumferential At least a portion of extensional surface is spaced apart with parallel relation；Wherein in the frusto-conical surface limited by the valve body and by institute State seal restriction it is tapered and circumferentially extending surface at least a portion between parallel interval between limit offset distance.

In another illustrative embodiments, offset distance prolongs on the direction of at least frusto-conical surface Stretch.

In some illustrative embodiments, valve member, which limits, is suitable for the first axle coaxial with the second axis of valve seat； The frusto-conical surface wherein limited from the first angle of first axle measurement by the valve body limits；Wherein from institute State the tapered and at least a portion on the surface of the circumferentially extending limit that the second angle of first axle measurement is limited by the seal It is fixed；Wherein described first angle and the second angle are of substantially equal；And wherein described first angle and the second angle In each be configured to be substantially equal to and limited by the tapered surface of the valve seat and from described the second of the valve seat The taper angle of shaft centerline measurement.

In an illustrative embodiments, seal further defines another tapered and circumferentially extending surface, should Surface obliquely extends from first limited by seal is tapered with circumferentially extending surface.

In another illustrative embodiments, another tapered and circumferentially extending surface elongated end of seal terminates At or near the frusto-conical surface limited by valve body.

In another illustrative embodiments, the circular contact portion of seal by the first of seal and another gradually Intersection between contracting and circumferentially extending surface limits, and the circular contact portion first including seal is tapered and circumferential At least a portion of extensional surface.

In some illustrative embodiments, valve member limits and is configured to the first axle coaxial with the second axis of valve seat Line；The frusto-conical surface wherein limited from the first angle of first axle measurement by the valve body limits；Wherein from institute State the described first tapered and circumferentially extending surface restriction that the second angle of first axle measurement is limited by seal；Wherein from institute State another tapered and circumferentially extending surface restriction that the third angle of first axle measurement is limited by the seal；Wherein institute State first angle and the second angle is of substantially equal；Wherein described third angle is more than the first angle and second jiao described Each in degree.

In another illustrative embodiments, valve member limits and is configured to first coaxial with the second axis of valve seat Axis；Counterbore is wherein formed in the valve body, the counterbore is substantially coaxial with the first axle, and the counterbore includes expanding Diameter portion and reduced diameter portion point, the reduced diameter portion point limit fluid passage；Wherein described counterbore is limited to the expansion The interior shoulder radially extended between diameter portion and reduced diameter portion point；And wherein described rupture disc assembly includes：Insurance Piece, it is arranged in the enlarged diameter portion and engages the interior shoulder；And sealingly engage at least safety plate and interior shoulder The lip ring in portion.

In another exemplary embodiment, safety plate includes the annular mounting portion being arranged in enlarged diameter portion, Shoulder in one end engagement of annular mounting portion；Arch broken portion, the annular mounting portion surround the arch broken portion Extend circumferentially over upon；And it is formed in the circular passage in the end engaged with the interior shoulder of the annular mounting portion；Its Described in lip ring extend in the circular passage and sealingly engage at least described annular mounting portion and described Interior shoulder.

In a third aspect, there is provided a kind of inlet valve or outlet valve for reciprocating pump component, the inlet valve or Outlet valve includes the valve seat for limiting first axle, and the valve seat includes tapered surface；And the valve suitable for being engaged with the valve seat Component, the valve member limit and are configured to the second axis coaxial with the first axle, and the valve member includes：Valve body, The valve body limits the first surface product for being configured to contact with the tapered surface of valve seat；The outer annular chamber formed in valve body Body；And the seal extended in the outer annular cavity, the seal are limited and are configured to the valve seat gradually The second surface region of contracting surface contact；Wherein first surface product and scope of the ratio that second surface accumulates in about 0.9 to about 1.2 It is interior.

In the exemplary embodiment, valve body limits the first and second frusto-conical surfaces；Wherein described seal limits It is configured to the tapered and circumferentially extending surface sealingly engaged with the tapered surface of the valve seat；And wherein by described The second frusto-conical surface that valve body limits in the tapered of the first frusto-conical surface and seal limited by the valve body and Obliquely extend between the surface of circumferentially extending.

In another illustrative embodiments, seal further includes annular bulbous protrusion, tapered and circumferentially extending surface Obliquely extend from the annular bulbous protrusion, extension is terminated at or near the second frusto-conical surface limited by valve body.

In another exemplary embodiment, valve body limits top surface；Wherein described seal, which further includes, to be formed in outside it Passage in surface；And wherein described passage is arranged between the top surface of the valve body and the annular bulbous protrusion.

In some illustrative embodiments, valve member further comprises：Base portion, valve body extend from the base portion, wherein valve First frusto-conical surface of body obliquely extends between base portion and the second frusto-conical surface of valve body；And from the base Portion extends and leaves the supporting leg of multiple circumferentially spaceds of the valve body, wherein the supporting leg slidably engages the another of the valve seat One surface.

In the exemplary embodiment, the first frusto-conical surface of valve body limits the first angle from first axle；And And the second frusto-conical surface of wherein described valve body limits the second angle from second axis.

In another illustrative embodiments, first angle is more than second angle.

In some illustrative embodiments, outer annular cavity limits the first and second surfaces for tilting extension；And Wherein described valve member further comprises：Annular groove, the annular groove tilt extensional surface described first and second Intersection is formed in the valve body；And the Annular Element for being arranged in the annular groove and being engaged with the seal Part.

In the exemplary embodiment, seal limit tapered surface tapered that is configured to sealingly engage valve seat and Circumferentially extend surface；And wherein described seal includes ring-type bulbous protrusion, described tapered and circumferentially extending surface is from institute Ring-type bulbous protrusion is stated obliquely to extend.

In fourth aspect, there is provided a kind of valve member for reciprocating pump component, the valve member include having the The valve body of one frusto-conical surface, the valve body limit outer annular cavity formed therein；And in the outer annular The seal of extension in cavity, the seal include the tapered table for being adapted to sealingly engage the valve seat of the reciprocating pump component The first tapered and circumferentially extending surface in face；And annular bulbous protrusion, the described first tapered and circumferentially extending surface is from described Annular bulbous protrusion obliquely extends, and the described first tapered and circumferentially extending surface is in the annular bulbous protrusion and the valve body The first frusto-conical surface between extend.

In the exemplary embodiment, seal further includes the passage being formed in its outer surface, and the passage is positioned at sealing Between the annular bulbous protrusion of part and the top surface of valve body.

In another illustrative embodiments, valve member limit be configured to it is coaxial with the second axis that is limited by valve seat First axle；First frusto-conical surface of valve body limits the first angle from first axle measurement；And the valve seat Tapered surface limits the taper angle from second axis measurement, and the taper angle is substantially equal to the first angle.

In another illustrative embodiments, valve body further includes the second frusto-conical surface, the first butt circle of valve body Poppet surface valve body the second frusto-conical surface and seal first it is tapered circumferentially extending surface between obliquely extend； And the second frusto-conical surface of valve body limits the second angle from first axle measurement, second angle is more than first angle.

In some illustrative embodiments, valve body and seal limit the tapered surface for being configured to contact valve seat respectively The first and second surface areas；And first surface accumulates the ratio with second surface product in the range of about 0.9 to about 1.2.

In the exemplary embodiment, in the first frusto-conical surface and described the first of the seal of the valve body Offset distance is limited between tapered and circumferentially extending surface at least a portion, the offset distance is along perpendicular to the valve body At least the first frusto-conical surface direction extension.

In another illustrative embodiments, the first frusto-conical surface of valve body is limited from the limited by valve member The first angle of one shaft centerline measurement, the first axle are configured to coaxial with the second axis that is limited by valve seat；The seal First it is tapered and circumferentially extending surface described at least a portion limit from the first axle measurement second angle, it is described Second angle is substantially equal to the first angle；And the first angle and the second angle are substantially equal to by described The taper angle that the tapered surface of valve seat is limited and measured from the second axis.

In another exemplary embodiment, seal be additionally included in seal first it is tapered and circumferentially extending surface with The the second tapered and circumferentially extending surface obliquely extended between first frusto-conical surface of valve body；And ring shaped contact portion Point, the circular contact portion is tapered between circumferentially extending surface by the described first tapered and circumferentially extending surface and second Intersection limits, and the circular contact portion includes described first tapered and circumferentially extending surface at least a portion.

In some illustrative embodiments, the first frusto-conical surface of valve body is limited from first limited by valve member The first angle of shaft centerline measurement, first axle are configured to coaxial with the second axis that is limited by valve seat；The first of seal is gradually Contracting and circumferentially extending surface and second is tapered and circumferentially extending surface limits second angle and the from first axle measurement respectively Three angles, second angle are less than third angle and substantially equal to first angle.

In the exemplary embodiment, the valve body further limits the counterbore formed along the first axle of the valve body, The first axle is configured to coaxial with the second axis that is limited by the valve seat, and the counterbore limits enlarged diameter portion, Reduced diameter portion point and the interior shoulder in valve body, the reduced diameter portion point define fluid passage；And the valve member also wraps Include the safety plate for being arranged in the enlarged diameter portion of counterbore and being engaged with the interior shoulder of valve body.

In the 5th aspect, there is provided a kind of valve member for reciprocating pump component, the valve member are included with the The valve body of one frusto-conical surface, the valve body limit outer annular cavity formed therein；And in the outer annular The seal of extension in cavity, the seal include being configured to the valve seat for sealingly engaging the reciprocating pump component gradually The first tapered and circumferentially extending surface on contracting surface；Wherein the first frusto-conical surface in the valve body and the seal Offset distance is limited between first tapered and circumferentially extending surface at least a portion, the offset distance is perpendicular to the valve The side of at least the first frusto-conical surface of body upwardly extends.

In an illustrative embodiments, the first frusto-conical surface of valve body is limited from first limited by valve member The first angle of shaft centerline measurement, first axle are configured to coaxial with the second axis that is limited by valve seat；The of the seal One tapered and circumferentially extending surface at least a portion limits the second angle from first axle measurement, and the second angle is basic It is upper to be equal to the first angle；And the first angle and the second angle are substantially equal to the tapered table by the valve seat The taper angle that face limits and measured from the second axis.

In another illustrative embodiments, seal is additionally included in the first tapered and circumferentially extending surface of seal The the second tapered and circumferentially extending surface obliquely extended between the first frusto-conical surface of valve body；And ring shaped contact portion Point, it is limited by the described first tapered and circumferentially extending surface and the second tapered intersection between circumferentially extending surface, The circular contact portion includes described first tapered and circumferentially extending surface at least a portion.

In another exemplary embodiment, the first frusto-conical surface of valve body is limited from first limited by valve member The first angle of shaft centerline measurement, first axle are configured to coaxial with the second axis that is limited by valve seat；The first of seal is gradually Contracting and circumferentially extending surface and second tapered and circumferentially extending surface limits the second angle measured from first axle and the respectively Three angles, second angle are less than third angle and are substantially equal to first angle.

In some illustrative embodiments, seal further includes annular bulbous protrusion, the first tapered and circumferentially extending table Face obliquely extends from the annular bulbous protrusion, and the first tapered and circumferentially extending surface is the first of annular bulbous protrusion and valve body Extend between frusto-conical surface；And its exterior passage is formed in, the passage is located at the annular spherical of the seal Between the top surface of projection and the valve body.

In the exemplary embodiment, valve member, which limits, is configured to first coaxial with the second axis that is limited by valve seat Axis；First frusto-conical surface of valve body limits the first angle from first axle measurement；And the tapered table of the valve seat Face limits the taper angle from second axis measurement, and the taper angle is substantially equal to the first angle.

In another exemplary embodiment, valve body and seal limit be configured to connect with the tapered surface of valve seat respectively The first and second tactile surface areas；And first surface accumulates the ratio with second surface product in the range of about 0.9 to about 1.2.

In some illustrative embodiments, the valve body is further limited to sink along what the first axle of the valve body was formed Hole, the first axle are configured to coaxial with the second axis that is limited by the valve seat, and the counterbore limits enlarged diameter portion Point, the interior shoulder of reduced diameter portion point and valve body, the reduced diameter portion point limits fluid passage.

In the exemplary embodiment, valve member further include be arranged in the enlarged diameter portion of counterbore and with valve body The safety plate of shoulder engagement；And sealingly engage the lip ring of at least safety plate and interior shoulder.

By the detailed description below in conjunction with the attached drawing for being used as a part of this disclosure, other aspects, feature and advantage will Become apparent, attached drawing is the attached drawing for the principle that present invention disclosed is shown as example.

Brief description of the drawings

Attached drawing is conducive to understand various embodiments.

Fig. 1 is the front view of reciprocating pump component according to illustrative embodiments, and pump group part includes fluid end.

Fig. 2 is the sectional view of the fluid end of Fig. 1 according to illustrative embodiments, the fluid end include fluid end block and Inlet valve and outlet valve, inlet valve and outlet valve include valve seat respectively.

Fig. 3 is the enlarged view of a part for the sectional view of Fig. 2 according to illustrative embodiments.

Fig. 4 is the sectional view according to the valve seat of another illustrative embodiments and the respective part of fluid end block.

Fig. 5 is the sectional view according to the valve seat of another exemplary embodiment and the respective part of fluid end block.

Fig. 6 is according to the sectional view of the valve of another illustrative embodiments, which includes valve seat.

Fig. 7 is the perspective view of the valve seat of Fig. 6 according to illustrative embodiments.

Fig. 8 is the sectional view of the valve seat of Fig. 6 according to illustrative embodiments and 7.

Fig. 9 is the sectional view of the valve of Fig. 6 in the fluid end block according to illustrative embodiments for being arranged in Fig. 2.

Figure 10 is the sectional view of valve according to illustrative embodiments, which includes valve seat and valve member.

Figure 11 is the enlarged view according to a part for the valve member of Figure 10 of another exemplary embodiment.

Figure 12 is that the experiment steel undergone according to the finite element model of the valve by Figure 10 of exemplary experiment embodiment contacts The view of pressure.

Figure 13 is the experiment stress undergone according to the finite element model of the valve by Figure 10 of exemplary experiment embodiment View.

Figure 14 is the experiment polyurethane undergone according to the finite element model of the valve by Figure 10 of exemplary experiment embodiment The view of contact.

Figure 15 is the perspective view of valve member according to illustrative embodiments.

Figure 16 is the front view of the valve member of Figure 15.

Figure 17 is cuing open for the valve member for Figure 15 and 16 that the line 17-17 according to illustrative embodiments along Figure 16 is intercepted View.

Figure 18 is the enlarged view of a part of Figure 17 according to illustrative embodiments.

Figure 19 is the perspective view of valve member according to illustrative embodiments.

Figure 20 is the front view of the valve member of Figure 19.

Figure 21 is cuing open for the valve member for Figure 19 and 20 that the line 21-21 according to illustrative embodiments along Figure 20 is intercepted View.

Figure 22 is the perspective view of valve member according to illustrative embodiments.

Figure 23 is the front view of the valve member of Figure 22.

Figure 24 is cuing open for the valve member for Figure 22 and 23 that the line 24-24 according to illustrative embodiments along Figure 23 is intercepted View.

Figure 25 is the enlarged drawing of a part of Figure 24 according to illustrative embodiments.

Figure 26 is the perspective view of valve member according to illustrative embodiments.

Figure 27 is the front view of the valve member of Figure 26.

Figure 28 is the section view of the valve member for Figure 26 and 27 that the line 28-28 according to illustrative embodiments along Figure 27 is intercepted Figure.

Figure 29 is the amplification view of valve member according to illustrative embodiments.

Figure 30 is another amplification view of valve member according to illustrative embodiments.

Embodiment

In the exemplary embodiment, as shown in Figure 1, reciprocating pump component is generally represented by reference numeral 10, and Including power end 12 and the fluid end being operatively coupled with it 14.Power end 12 includes housing 16, bent axle (not shown) It is arranged in the housing 16, bent axle is operably linked to be configured to the engine or motor (not shown) of driving bent axle.Stream Body end 14 includes fluid end block 18, which is connected to housing 16 via multiple struts (stay rod) 20.Fluid end Block 18 includes the fluid inlet channel 22 and fluid outlet channels 24 being spaced apart with parallel relation.Multiple cap assemblies 26, wherein one It is a that figure 1 illustrates be connected to fluid end block 18 on the contrary with supporting rod 20.Multiple cap assemblies 28, one of those is in Fig. 1 Show, fluid end block 18 is connected on the contrary with fluid inlet channel 22.Plunger rod component 30 stretches out to go forward side by side from housing 16 to become a mandarin Body end block 18.In some illustrative embodiments, pump group part 10 is freestanding (freestanding) on the ground, or It is mounted on the trailer that can be pulled between workplace, or on balladeur train.

In the exemplary embodiment, with continued reference to Fig. 1 as shown in Figure 2, plunger rod component 30 includes plunger 32, the column Plug 32 extends across the hole 34 formed in fluid end block 18 and enters the pressure chamber 36 formed in fluid end block 18. In multiple illustrative embodiments, the hole that multiple parallel intervals are opened can be formed in fluid end block 18, one of hole is hole 34, Multiple pressure chamber can be formed in fluid end block, one of pressure chamber is pressure chamber 36, and multiple parallel intervals Plunger can extend through in multiple holes corresponding hole and enter corresponding pressure chamber, wherein one in the plunger is Plunger 32.To less porous 34, pressure chamber 36 and plunger 32 can be characterized as being plunger group (plunger throw) together.Several In a illustrative embodiments, reciprocating pump component 10 includes three plunger groups (i.e. three cylinder pump component), or including four or More plunger groups.

As shown in Fig. 2, fluid end block 18 includes entrance and exit fluid passage 38 and 40 formed therein, its substantially along Fluid passage axis 42 is coaxial.Under conditions of will describing below, fluid configuration into along fluid passage axis 42 flow through into Mouth and outlet flow channel 38 and 40.Fluid inlet channel 22 is in fluid communication via inlet fluid passage 38 and pressure chamber 36. Pressure chamber 36 is in fluid communication via outlet flow channel 40 and fluid outlet channels 24.Fluid inlet channel 38 expands including diameter Most of 38a and divide 38b from its reduced diameter portion extended downwardly.The tapered interior shoulder 43 of enlarged diameter parts 38a restrictions, and because This limits the frusto-conical surface 44 of fluid end block 18.Reduced diameter portion divides the inner surface 46 that 38b limits fluid end block 18.It is similar Ground, fluid outlet channels 40 include enlarged diameter parts 40a and divide 40b from its reduced diameter portion extended downwardly.Enlarged-diameter Part 40a limits tapered interior shoulder 48 and therefore limits the frusto-conical surface 50 of fluid end block 18.Reduced diameter portion divides 40b to limit The inner surface 52 of constant current body end block 18.

Inlet valve 54 is arranged in fluid passage 38, and at least engages frusto-conical surface 44 and inner surface 46.It is similar Ground, outlet valve 56 are arranged in fluid passage 40, and at least engage frusto-conical surface 50 and inner surface 52.In an example In property embodiment, each valve 54 and 56 is all spring-opposed valve, is activated by the predetermined pressure difference on its both ends.

Counterbore 58 is formed in fluid end block 18, and substantially coaxial with fluid passage axis 42.Counterbore 58 limits interior shoulder Portion 58a and including the female threaded joint 58b adjacent with interior shoulder 58a.Counterbore 60 is formed in fluid end block 18, and substantially It is coaxial along axis 62 with hole 34.Counterbore 60 limits interior shoulder 60a and including the female threaded joint adjacent with interior shoulder 60a 60b.In several illustrative embodiments, fluid end block 18 can include the counterbore of multiple parallel intervals, one of counterbore Can be counterbore 58, the quantity of counterbore is equal to the quantity for the plunger being included in pump group part 10.Similarly, in several exemplary realities Apply in mode, fluid end block 18 can include the counterbore that another group of multiple parallel intervals are opened, and one of counterbore can be heavy The quantity in hole 60, wherein counterbore is equal to the quantity for the plunger group being included in pump group part 10.

Plug 64 is arranged in counterbore 58, is engaged and is sealingly engaged by the reduced diameter portion of counterbore 58 with interior shoulder 58a Divide the inner periphery limited.The male thread portion 66a of fastener 66 divides 58b screw threads with the female threaded joint of counterbore 58 Engagement so that the end sections of fastener 66 are engaged with plug 64.Therefore, plug 64 is set or is held in place by fastener 66, The interior shoulder 58a limited by counterbore 58 is resisted against, thus keeps what plug 64 was limited against the reduced diameter portion point by counterbore 58 Inner periphery and be sealingly engaged with it.Cap assemblies 28 shown in Fig. 1 and Fig. 2 include at least plug 64 and fastener 66. In illustrative embodiments, cap assemblies 28 can be disconnected from fluid end block 18 leads to such as counterbore 58, pressure chamber to provide 36, plunger 32, the path of fluid passage 40 or outlet valve 56.Then cap assemblies 28 can reconnect to fluid end block as described above 18.In several illustrative embodiments, pump group part 10 can include multiple plugs, one of them is plug 64, and multiple tight Firmware, one of them is fastener 66, and wherein the respective quantity of plug and fastener is equal to the plunger being included in pump group part 10 The quantity of group.

Plug 68 is arranged in counterbore 60, is engaged with interior shoulder 60a and is sealingly engaged the diameter reduction by counterbore 60 The inner periphery that part limits.In the exemplary embodiment, plug 68 can be used as suction cover (suction cover).Tightly The male threaded joint 70a of firmware 70 is threadedly engaged with the female threaded joint 60b of counterbore 60 so that the end portion of fastener 70 Divide and engaged with plug 68.Therefore, plug 68 is set or is held in place by fastener 70, is resisted against the interior shoulder limited by counterbore 60 On 60a, plug 68 is thus kept to be sealingly engaged the inner periphery limited by the reduced diameter portion point of counterbore 60.In Fig. 1 and Fig. 2 Shown cap assemblies 26 include at least plug 68 and fastener 70.In an illustrative embodiments, cap assemblies 26 can be from Fluid end block 18 is disconnected, and leads to such as counterbore 60, pressure chamber 36, plunger 32, fluid passage 38 or inlet valve to provide 54 path.Then, cap assemblies 26 can reconnect to fluid end block as described above.In several illustrative embodiments, Pump group part 10 can include multiple plugs, one of them is plug 68, and multiple fasteners, one of them is fastener 70, its The respective quantity of middle plug and fastener is equal to the quantity for the plunger group being included in pump group part 10.

Valve spring retainer 72 is arranged in the enlarged diameter portion 38a of fluid passage 38.Valve spring retainer 72 connects To the end opposite with fastener 70 of plug 68.In the exemplary embodiment, and as schemed as shown in Fig. 2, valve spring is protected Holder 72 is connected via hub 74 substantially coaxial with axis 62 with plug 68.

In the exemplary embodiment, as shown in Figure 3 and include 76 He of valve seat with continued reference to Fig. 1 and Fig. 2, inlet valve 54 The valve member 78 engaged.Valve seat 76 includes pedestal 80, it has enlarged diameter portion 82 at one end.The expansion of pedestal 80 is straight Path portion 82 is arranged in the enlarged diameter portion 38a of fluid passage 38.Hole 83 is formed through pedestal 80.Valve seat 76 has valve Seat axis 84, as shown in figure 3, when inlet valve 54 is arranged in fluid passage 38, valve seat axis 84 and fluid passage axis 42 Alignment.In the case of describing below, fluid flow through orifice 83 is simultaneously flowed along valve seat axis 84.Hole 83 defines pedestal 80 Inner surface 85.The outer surface 86 of pedestal 80 contacts the inner surface 46 limited by fluid passage 38.The sealing member of the grade of O-ring 88 Part is arranged in the annular groove 90 being formed in outer surface 86.The O-ring 88 is sealingly engaged with inner surface 46.Enlarged diameter Part 82 includes tapered outer shoulder 91, and therefore limits frusto-conical surface 92, which tilts upward from outer surface 86 prolongs Stretch.Part 82 further defines cylindrical surface 94, it is extended axially upward from frusto-conical surface 92.Frusto-conical surface 92 is axial Ground is arranged between outer surface 86 and cylindrical surface 94.Part 82 further defines tapered surface 96, its from inner surface 85 obliquely Upwardly extend, as shown in Figure 3.In an illustrative embodiments, tapered surface 96 is extended from valve seat axis 84 with an angle. The reduced diameter portion that the pedestal 80 of valve seat 76 is arranged in fluid passage 38 divides 38b so that the outer surface 86 of pedestal 80 engages fluid The inner surface 46 of end block 18.In the exemplary embodiment, pedestal 80 forms interference in the part 38b of fluid passage 38 and matches somebody with somebody Close, or press-fit, so as to prevent valve seat 76 from deviating from from fluid passage 38.

Valve member 78 includes center-pole 98, and valve body 100 extends radially outwardly from center-pole 98.Formed in valve body 100 outer Portion's annular housing 102.The extension in cavity 102 of seal 104, and be suitable for sealingly engaging in the case of will describing below The tapered surface 96 of valve seat 76.Multiple circumferentially spaced supporting legs 106 dip down tiltedly extension (such as Fig. 3 institutes from center-pole 98 Show), and slidably engage the inner surface 85 of pedestal 80.In multiple illustrative embodiments, multiple supporting legs 106 may include Two, three, four, five or the supporting leg 106 more than five.The end portion of spring 108 and valve body 100 and center-pole 98 Opposite top engagement.Valve member 78 is relative to valve seat 76 and situation about will be described below thus relative to fluid end block 18 Under moved closed position (being shown in Fig. 3) between the (not shown) of open position.

In the exemplary embodiment, seal 104 is molded in the appropriate location in valve body 100.In exemplary implementation In mode, seal 104 is preformed and is then attached on valve body 100.In several illustrative embodiments, sealing Part 104 is made of one or more materials, such as deformable thermoplastic, polyurethane material, fibre reinforced materials, carbon, Glass, cotton, wire fibers, cloth and/or any combination of them.In the exemplary embodiment, seal 104 is by being arranged on Cloth in thermoplastic is formed, and cloth can include carbon, glass, wire, cotton fiber and/or its any combinations.More In a illustrative embodiments, seal 104 is made of at least fibre reinforced materials, it prevents or at least reduce delamination.Showing In example property embodiment, seal 104 has the hardness of 95A or bigger, or the hardness of 69D or bigger.Several exemplary In embodiment, valve body 100 is harder than seal 104 and/or rigidity higher.

Outlet valve 56 is identical with inlet valve 54, therefore will not be described in detail further.Outlet valve 56 it is corresponding to inlet valve 54 The identical feature of feature is represented with identical reference numeral with inlet valve 54.Valve seat axis 84 and the fluid of outlet valve 56 lead to Each alignment in the valve seat axis 84 of road axis 42 and inlet valve 54.Outlet valve 56 is arranged in fluid passage 40 and engages Fluid end block 18, its mode is identical with the inlet valve 54 for being arranged in fluid passage 38 and engaging fluid end block 18, but has one A exception.This exception is related to the spring 108 of outlet valve 56；More specifically, the top of the spring 108 of outlet valve 56 is pressed against On the bottom of plug 64, rather than it is compressed against and the valve spring retainer pressed by the top of the spring of inlet valve 54 108 On component corresponding to 72.

In operation, in the exemplary embodiment, moved back and forth with continued reference to Fig. 1-3, plunger 32 in hole 34, back and forth Pass in and out pressure chamber 36.That is, as shown in Fig. 2, plunger 32 is flatly moved back and forth from and towards fluid passage axis 42.In an illustrative embodiments, engine or motor (not shown) drive the bent axle being enclosed in housing 16 (not show Go out) so that plunger 32 moves back and forth in hole 34, to enter and leave pressure chamber 36.

Pressure chamber 36 is left as plunger 32 moves back and forth, inlet valve 54 is opened.More specifically, when plunger 32 moves far During from fluid passage axis 42, the pressure in pressure chamber 36 reduces, so as to produce pressure difference on inlet valve 54, and makes valve member 78 move up (from Fig. 2 and Fig. 3) relative to valve seat 76 and fluid end block 18.Due to the upward movement of valve member 78, bullet Spring 108 is compressed between valve body 100 and valve spring retainer 72, and seal 104 is disengaged from tapered surface 96, and therefore Inlet valve 54 is placed in its open position.Fluid in fluid inlet channel 22 is flowed along fluid passage axis 42, and is led to Cross fluid passage 38 and inlet valve 54 is drawn into pressure chamber 36.In order to flow through inlet valve 54, fluid flows through valve seat 76 Hole 83, and flowed along valve seat axis 84.By inlet valve 54 and enter the period of pressure chamber 36 in fluid, outlet valve 56 is in Its closed position, the seal 104 of the valve member 78 of outlet valve 56 engage the tapered surface 96 of the valve seat 76 of outlet valve 56.Fluid Continue to be inhaled into pressure chamber 36, its end of travel is in until plunger 32 leaves fluid passage axis 42.With regard to this, entrance Pressure difference on valve 54 causes the spring 108 of inlet valve 54 not to be further compressed, or starts to depressurize and stretch, and promotes inlet valve 54 valve member 78 is moved down and (observed in figs 2 and 3) relative to valve seat 76 and fluid end block 18.Therefore, 54 quilt of inlet valve It is placed in or starts to be placed in its closed position, wherein seal 104 sealingly engages or be at least moved towards tapered surface 96.

When plunger 32 moves into pressure chamber 36 and thus shifts to fluid passage axis 42, the pressure in pressure chamber 36 Power starts to increase.Pressure in pressure chamber 36 continues to increase, until the pressure difference on outlet valve 56 exceedes predetermined set point, this When outlet valve 56 open, and allow fluid along 42 outflow pressure chamber 36 of fluid passage axis and by fluid passage 40 and going out Mouth valve 56, and enter fluid outlet channels 24.When plunger 32 reaches its end of travel (that is, its row towards fluid passage axis 42 Go out stroke) when, inlet valve 54 is in or is placed in its closed position, and wherein seal 104 sealingly engages tapered surface 96.

Repeat the above process, as fluid from fluid inlet passage 22 flows to fluid outlet passage via pressure chamber 36 24, reciprocating pump component 10 pressurizes fluid.In the exemplary embodiment, pump group part 10 is the reciprocating pump of single-acting, its Middle fluid is only pumped in the side of plunger 32.

In the exemplary embodiment, during the aforesaid operations of reciprocating pump component 10, each surface 44 and 92 is gradually Contracting shape balance is applied to load force thereon.In the exemplary embodiment, for load distribution on surface 44 and 92, reducing should Power is concentrated.In the exemplary embodiment, the stress quilt near the chamfering junction between the surface 86 and 92 in valve seat 76 The stress equilibrium of fillet near interface in fluid end block 18 between surface 46 and 44.Therefore, these stress reduce.At one In illustrative embodiments, the tapered shape on each surface 44 and 92 allows the outside diameter of the pedestal 80 of inlet valve 54 to reduce, thus Also relatively small access hole and the relatively small horizontal aperture in fluid end block 18 are allowed.In an exemplary implementation In mode, the taper on each surface 44 and 92 reduces the extraction force removed from fluid passage 38 needed for valve seat 76.

In the exemplary embodiment, as shown in Figure 4 and with continued reference to Fig. 1-3, taper angle 110 is by tapered outer shoulder 91 And therefore frusto-conical surface 92 limits.Taper angle 112 is by tapered interior shoulder 43 and therefore frusto-conical surface 44 Limit.Each taper angle 110 and 112 can be measured from fluid passage axis 42 and the valve seat aligned axis 84.At one In illustrative embodiments, taper angle 110 and 112 is equal, and from fluid passage axis 42 and aligned valve The scope that seat axis 84 measures is from about 10 degree to about 45 degree.In an illustrative embodiments, from fluid passage axis The scope of 42 taper angles 110 and 112 measured with the valve seat axis 84 aligned is about 20 degree to 40 degree.In exemplary reality Apply in mode, the scope of the taper angle 110 and 112 measured from fluid passage axis 42 and aligned valve seat axis 84 is About 25 to 35 degree.In the exemplary embodiment, taper angle 110 and 112 is equal, and from fluid passage axis 42 and with Each taper angle 110 and 112 that its valve seat axis 84 being aligned measures is about 30 degree.In the exemplary embodiment, it is tapered Angle 110 and 112 is unequal.As shown in figure 4, the gap or region of conical butt can be formed between surface 44 and 92 114.In addition, radial clearance 116 be limited at the exterior cylindrical surfaces 94 of valve seat 76 and fluid end block 18 inner surface 118 it Between, surface 118 is limited by the enlarged diameter portion 38a of fluid passage 38.In the exemplary embodiment, region 114 can save Slightly, and surface 92 can be with abutment surface 44.In the exemplary embodiment, material can be arranged in region 114 to absorb, Load between transmission and/or distribution surface 44 and 92.

As shown in figure 4, at least end opposite with enlarged diameter portion 82 of body 80 from fluid passage axis 42 and with The valve seat axis 84 of alignment be tapered with taper angle 120.In the exemplary embodiment, from 42 He of fluid passage axis The scope for the taper angle 120 that the valve seat axis 84 aligned measures is about 0 degree to about 5 degree.In an exemplary embodiment party In formula, the scope of the taper angle 120 measured from fluid passage axis 42 and aligned valve seat axis 84 is about 1 degree to about 4 degree.In the exemplary embodiment, the taper angle measured from fluid passage axis 42 and aligned valve seat axis 84 120 scope is about 1 degree to about 3 degree.In the exemplary embodiment, from fluid passage axis 42 and the valve seat axis aligned The taper angle 120 that line 84 measures is about 2 degree.In the exemplary embodiment, from fluid passage axis 42 and aligned with it Valve seat axis 84 measure taper angle 120 be about 1.8 degree.In an illustrative embodiments, instead of or except master Outside the end sections opposite with enlarged diameter portion 82 of body 80 are tapered, the inner surface 46 of fluid end block 18 is with taper angle It is tapered to spend 120.In the exemplary embodiment, interference engagement can be formed between main body 80 and inner surface 46, thus by valve Seat 76 is maintained at fluid end appropriate location in the block.In some illustrative embodiments, instead of being used in fluid passage 38 Interference engagement, can use and be threadedly coupled, valve seat 76 is maintained in fluid end block 18 by nut and/or the mechanism that is clasped Appropriate location.

In the exemplary embodiment, the embodiment using the inlet valve 54 shown in Fig. 4 pump group part 10 operation Period, surface 92 and 44 provide load balance, wherein the load in the enlarged diameter portion 82 of valve seat 76 is by by surface 92 abutment surfaces 44 or the intermediate materials by being disposed there between (one or more), and be allocated and be transferred to fluid end block 18 Surface 44.

In the exemplary embodiment, as shown in Figure 5 and with continued reference to Fig. 1-4, the radiused surface of fluid end block 18 (fillet surface) 122 is limited by the enlarged diameter portion 38a of fluid passage 38.Radiused surface 122 is in frustum of a cone table Extend between face 44 and inner surface 118.As shown in figure 5, each frusto-conical surface 92 and 44 is all tapered with taper angle 123, should Taper angle 123 can be measured from fluid passage axis 42 and aligned valve seat axis 84.In an exemplary embodiment party In formula, the scope of the taper angle 123 measured from fluid passage axis 42 and aligned valve seat axis 84 be about 10 degree to About 45 degree.In the exemplary embodiment, the taper angle measured from fluid passage axis 42 and aligned valve seat axis 84 Between the scope of degree 123 is about 10 degree to about 30 degree.In the exemplary embodiment, from fluid passage axis 42 and therewith The scope for the taper angle 123 that the valve seat axis 84 of alignment measures is about 12 degree to about 20 degree.In the exemplary embodiment, from Fluid passage axis 42 and the taper angle 123 of valve seat axis 84 aligned with it measurement are about 14 degree.In exemplary implementation In mode, surface 92 and 44 can be tapered with unequal angle respectively.92 abutment surface 44 of surface.As shown in figure 5, groove 90 Annular groove 124 and O-ring 126 are replaced with respectively with O-ring 88.Annular groove 124 is formed in frusto-conical surface 92, And O-ring 126 is disposed in annular groove 124.O-ring 126 sealingly engages frusto-conical surface 44.

In the exemplary embodiment, the embodiment using the inlet valve 54 shown in Fig. 5 pump group part 10 operation Period, be applied to valve seat 76 be loaded at least partially through surface 92 against surface 44 provide load balance and be allocated and pass It is delivered to fluid end block 18.

In the exemplary embodiment, using inlet valve 54 any of above embodiment pump group part 10 the operation phase Between, it is applied to along the downward axial load of fluid passage axis 42 on the top of valve body 100.When plunger 32 leads to towards fluid Road axis 42 moves and outlet valve 56 is opened and allows outgoing fluid pressure chamber 36, flows through fluid passage 40 and outlet valve 56 and when entering fluid outlet channels 24, the load is usually maximum.With plunger 32, towards fluid passage axis 42, (it is arranged Go out stroke) when reaching its stroke end, inlet valve 54 is in or is placed in its closed position, and is applied to the top of valve body 100 The load in portion is delivered to seal 104 via valve body 100.Then, load and be delivered to valve seat 76 via seal 104, and then Intermediate materials in-between are engaged against or set via surface 92 and surface 44 and distribute and be transferred to fluid end block 18 Tapered interior shoulder 43.The tapered distribution and transmission for promoting downward axial load with balance mode on surface 92 and 44, from And reduce the stress concentration in fluid end block 18 and valve seat 76.

In the exemplary embodiment, as shown in figures 6 and with continued reference to Fig. 1-5, inlet valve is substantially by reference numeral 128 represent, and are endowed identical attached drawing including the multiple components identical with the corresponding component of inlet valve 54, identical part Mark.Inlet valve 128 includes valve seat 129.Valve seat 129 includes the several features identical with the individual features of valve seat 76, identical Feature is presented with like reference characters.In valve seat 128 annular notch 130 is formed in the intersection on surface 86 and 92.

As shown in figure 8, taper angle 132 is by exterior tapered shoulder 91 and is therefore limited by frusto-conical surface 92.Gradually Contracting angle 132 can be measured from valve seat axis 84.In the exemplary embodiment, the taper angle measured from valve seat axis 84 132 be about 30 degree.In the exemplary embodiment, the scope of the taper angle 132 measured from valve seat axis 84 is about 10 Degree is to about 45 degree.In the exemplary embodiment, from valve seat axis 84 measure taper angle 132 scope be about 20 degree to About 40 degree.In the exemplary embodiment, the scope of the taper angle 132 measured from valve seat axis 84 is about 25 to about 35 degree. The cylindrical surface 94 limited by the enlarged diameter portion 82 of valve seat 129 defines outside diameter 134.In the exemplary embodiment, Outside diameter 134 is about 5 inches.In the exemplary embodiment, outside diameter 134 is about 5.06 inches.Limited by the hole 83 through pedestal 80 The inner surface 85 of fixed pedestal 80 defines internal diameter 136.In the exemplary embodiment, the scope of internal diameter 136 from about 3 inches to About 3.5 inches.In the exemplary embodiment, internal diameter 136 is about 3.27 inches.The annular surface 138 of pedestal 80 is recessed by annular Groove 90 limits.Groove diameter 140 is limited by annular surface 138.In the exemplary embodiment, the scope of groove diameter 140 from About 4 inches to about 4.5 inches.In the exemplary embodiment, groove diameter 140 is about 4.292 inches.In exemplary reality To apply in mode, outside diameter 142 is limited by the outer surface 86 of pedestal 80 in the axial positions of adjacent rings recess 130, or at least Limited near intersection between surface 86 and 92.In the exemplary embodiment, the scope of outside diameter 142 is from about 4 inches To about 5 inches.In the exemplary embodiment, the scope of outside diameter 142 is from about 4.5 inches to about 5 inches.Exemplary In embodiment, the scope of outside diameter 142 is from about 4.5 inches to about 4.6 inches.In the exemplary embodiment, outside diameter 142 About 4.565 inches.Outer surface 86 is radially-inwardly tapered since the axial location of outside diameter 142, and terminate at main body 80 with The opposite end of enlarged diameter portion 82, thus defines the taper angle 144 from valve seat axis 84.In illustrative embodiments In, the scope of the taper angle 144 measured from valve seat axis 84 is from about 0 degree to about 5 degree.In the exemplary embodiment, from The scope for the taper angle 144 that valve seat axis 84 measures is from 0 degree to about 5 degree.In the exemplary embodiment, from valve seat axis 84 The taper angle 144 of measurement is about 2 degree.In the exemplary embodiment, it is from the taper angle 144 of the measurement of valve seat axis 84 About 1.8 degree.

In the exemplary embodiment, as shown in Figure 9 and with continued reference to Fig. 1 to Fig. 8, eliminated from pump group part 10 into Mouth valve 54, is substituted with the inlet valve 128 in fluid passage 38.The tapered outer shoulder 91 of valve seat 129 engages fluid end block 18 gradually Shoulder 43 in contracting.Therefore, frusto-conical surface 92 engages frusto-conical surface 44.It is tapered in an illustrative embodiments Interior shoulder 43 defines the taper angle from fluid passage axis 42, it is equal to taper angle 132.In illustrative embodiments In, tapered interior shoulder 43 limits the taper angle equal with taper angle 132, and the taper angle measured from valve seat axis 84 The scope of degree 132 is from about 10 degree to about 45 degree.In an illustrative embodiments, measured from valve seat axis 84 tapered The scope of angle 132 is from about 20 degree to 45 degree.In the exemplary embodiment, the taper angle measured from valve seat axis 84 132 scope is from about 25 degree to 35 degree.In an illustrative embodiments, tapered interior shoulder 43 defines and taper angle 132 equal taper angles, and the taper angle 132 measured from valve seat axis 84 is about 30 degree.O-ring 88 sealingly engages The inner surface 46 of fluid end block 18.The outer surface 86 of the main body 80 of the valve seat 129 of inlet valve 128 engages the interior table of fluid end block 18 Face 46.In the exemplary embodiment, at least reduced diameter portion of fluid passage 38 divides 38b to be tapered so that by part 38b The internal diameter 146 of restriction reduces along fluid passage axis 42 on the axial direction away from enlarged diameter portion 38a.In exemplary reality Apply in mode, in the axial positions corresponding to the intersection between surface 46 and 44, the scope of internal diameter 146 is from about 4 inches To about 5 inches.In the exemplary embodiment, it is interior in the axial positions corresponding to the intersection between surface 46 and 44 The scope in footpath 146 is from about 4.5 inches to about 5 inches.In the exemplary embodiment, corresponding between surface 46 and 44 Intersection axial positions, the scope of internal diameter 146 is from about 4.5 inches to about 4.6 inches.In illustrative embodiments In, in the axial positions corresponding to the intersection between surface 46 and 44, internal diameter 146 is about 4.553 inches.In an example Property embodiment in, between outer surface 86 and inner surface 46 formed interference fit, so as to prevent valve seat 129 from fluid passage 38 Middle abjection.

In the exemplary embodiment, the operation of inlet valve 129 and the behaviour of inlet valve 54 during the operation of pump group part 10 Make identical.Therefore, the operation of inlet valve 129 will not be described in detail during the operation of pump group part 10.

In an illustrative embodiments, inlet valve 54 can be omitted from pump group part 10, and be replaced with inlet valve 128 Generation, and outlet valve 56 can be omitted from pump group part 10, and substituted with the outlet valve identical with inlet valve 128.Exemplary In embodiment, the operation using inlet valve 128 and the pump group part 10 of the outlet valve identical with inlet valve 128 is with using inlet valve 54 is identical with the aforesaid operations of the pump group part 10 of outlet valve 56.

In the exemplary embodiment, as shown in Figures 10 and 11 it is and overall by attached with continued reference to Fig. 1-9, inlet valve Icon note 150 represents, and including the multiple components identical with the corresponding component of inlet valve 54, and identical component is with identical attached Icon note represents.Inlet valve 150 includes valve seat 152 and valve member 154.

Valve seat 152 includes the several features identical with the individual features of valve seat 76, and identical feature is with identical attached drawing mark Note instruction.However, with valve seat 76 on the contrary, as shown in Figure 10, valve seat 152 does not include exterior tapered shoulder 91, therefore does not include cutting Head conical surface 92.Alternatively, valve seat 152 includes externals shoulders 156, it limits surface be axially facing and circumferentially extending 158.Alternatively, in some illustrative embodiments, valve seat 152 can be described as having exterior tapered shoulder 91, still The value of the taper angle 132 limited by exterior tapered shoulder 91 is 90 degree.In addition, the surface area increase of tapered surface 96；Tool Body, the surface area portion for being configured to experience steel to steel contact of tapered surface 96 is about to double (2X to 2.2X).

In valve seat 152 annular notch 160 is formed in the intersection on surface 86 and 158.Tapered surface 96 defines tapered Angle 162.Taper angle 162 can be measured from valve seat axis 84.In the exemplary embodiment, from the valve seat axis extended vertically The taper angle 162 that line 84 measures is about 50 degree (shown in Figure 10, from any 40 degree of horizontal lines).In an exemplary implementation In mode, the scope of the taper angle 162 measured from the valve seat axis 84 that extends vertically be from about 40 degree to about 60 degree (such as Shown in Figure 10, from any 50 degree to about 30 degree of horizontal line).In an illustrative embodiments, surveyed from valve seat axis 84 The scope of the taper angle 162 of amount is from about 45 degree to about 55 degree (as shown in Figure 10, from any horizontal line into 45 degree to greatly About 35 degree).

Valve member 154 includes central disk-shaped center base 164, and center base 164 defines that exterior circumferential extends convex surface 166.Valve body 168 is extended axially upward along valve seat axis 84 from base portion 164.Valve body 168 also from valve seat axis 84 radially outward Extension.Outer annular cavity 170 is formed in valve body 168.Limited by outer annular cavity 170 substantially tapered and obliquely downward Circumferentially extending surface 172.Outer annular cavity further defines circumferentially extending table that is substantially tapered and obliquely upwardly extending Face 174.Circumferentially extending passage 176 in lower part is formed in surface 174.Top circumferentially extending passage 178a is formed in surface 172 And 178b.Intersection in valve body 168 between surface 172 and 174 forms annular groove 180.Set in annular groove 180 There is the ring-type element of such as O-ring 182.

The extension in exterior annular housing 170 of seal 184, and it is adapted to sealingly engage the tapered surface of valve seat 152 96.Seal 184 extends in passage 176,178a and 178b.182 engaging seals 184 of O-ring.In illustrative embodiments In, seal 184 is made of polyurethane.In the exemplary embodiment, seal 184 in passage 176,178a and 178b Extension helps seal 184 being fixed to valve body 168.In the exemplary embodiment, O-ring 182 and passage 176,178a Combination with the extension of the seal 184 in 178b is conducive to seal 184 being fixed to valve body 168.Seal 184 defines Exterior circumferential extends outer surface 186.Circular passage 188 is formed in outer surface 186.Seal 184 further includes annular globular process Play 190.Passage 188 is vertically situated between the top surface 192 of valve body 168 and bulbous protrusion 190.In illustrative embodiments In, bulbous protrusion 190 is adjacent with passage 188.In exemplary implementation, as shown in Figure 10, passage 188 is vertically situated at top table Between face 192 and bulbous protrusion 190, and bulbous protrusion 190 is adjacent with passage 188.Tapered and circumferentially extending surface 194 is from ball Shape projection 190 obliquely extends downwardly, and the extension on surface 194 is terminated at or near valve body 168.

In several illustrative embodiments, seal 184 is integrative-structure, and therefore surface 186, passage 188, ball The appropriate section of shape projection 190 and surface 194 and the seal 184 extended in passage 176,178a and 178b is integrated ground Formed.

In several illustrative embodiments, seal 184 is the overall structure of polyurethane, and therefore surface 186, is led to The appropriate section of the seal 184 of extension in road 188, bulbous protrusion 190 and surface 194 and in passage 176,178a and 178b It is integrally formed using polyurethane.

As shown in FIG. 10 and 11, valve body 168 includes circular passage 196, and top surface 192 is circumferential around the circular passage 196 Ground extends.Formed with annular ridge 198 at adjacent channel 196 in valve body 168, and be positioned radially within passage 196 with Between top surface 192.The surface 200 being axially facing is limited by passage 196, and projection 202 is extended axially upward from surface 200 And leaving channel 196.The end portion of spring 108 (not shown in Figure 10 and 11) is engaged with surface 200.Projection 202 is in spring Extension in 108 end portion.

Valve body 168 limits the frusto-conical surface 204 extended with being inclined upwardly from base portion 164.Frusto-conical surface 206 Limited by valve body 168, frusto-conical surface 206 valve body 168 frusto-conical surface 204 and seal 184 it is tapered and all Obliquely extend between the surface 194 of extension.

The supporting leg 106 of multiple circumferentially spaceds dips down from base portion 164 tiltedly to be extended downwardly, and slidably engages valve seat The inner surface 85 of 152 pedestal 80.In some illustrative embodiments, multiple supporting legs 106 may include two, three, four, Five or the supporting leg 106 more than five.

Angle 208 is limited by frusto-conical surface 206.Angle 208 can be measured from valve member axis 210.Work as inlet valve 150 when being arranged in the fluid passage 38 of fluid end block 18, and valve member axis 210 aligns or coaxially with valve seat axis 84.Therefore, When inlet valve 150 is arranged in the first fluid passage 38 of fluid end block 18, axis 210,84 and 42 is in alignment with each other or coaxially.

In the exemplary embodiment, the angle 208 measured from valve member axis 210 is substantially equal to from valve seat axis 84 The angle 162 limited by tapered surface 96 of measurement.In the exemplary embodiment, it is from the angle 208 of valve member axis 210 50 degree, and from the angle 162 of valve seat axis 84 be 50 degree.

Angle 214 is limited by frusto-conical surface 204.As measured from valve member axis 210, angle 214 is more than angle 208。

Angle 216 (being clearly shown that in fig. 11) is limited by the tapered surface 194 of seal 184.Angle 216 can be with Measured from valve member axis 210.In the exemplary embodiment, when being measured from valve member axis 210, angle 216 is substantially Equal to angle 208.In the exemplary embodiment, when being measured from valve member axis 210, angle 216 is more than angle 208. In illustrative embodiments, when being measured from valve member axis 210, the angle 208 of angle 216 substantially equal to or greater than.Showing In example property embodiment, when being measured from valve member axis 210, angle 216 is less than, and is substantially equal or larger than angle 208.

In the exemplary embodiment, valve member 154 is made of 8620 alloy steel materials of AISI.In an exemplary reality Apply in mode, valve seat 152 is made of 8620 alloy steel materials of AISI.In an illustrative embodiments, valve seat 152 by 52080 alloy steel materials of AISI are formed.

Valve member 154 can relative to valve seat 152 and fluid end block 18 closed position (be not shown but be described below) and Open position (figure 10 illustrates and be described below) between move.

In an illustrative embodiments, as shown in figure 11, seal 184 includes the upper lug 218 of circumferentially extending, its Upwardly extended from passage 188 and around the top surface 192 of valve body 168.Top surface 220 is limited by the lug 218.Such as Figure 11 institutes Show, the top surface 220 of seal 184 is substantially flush with the top surface 192 of valve body 168.At the outside 186 of seal 184 Circular passage 222 is formed in tab 218.In some illustrative embodiments, as shown in figure 11, passage 176,178a and 178b It can be omitted from valve body 168.

In the exemplary embodiment, seal 184 is molded in the appropriate location in valve body 168.In exemplary implementation In mode, seal 184 is preformed and is then attached to valve body 168.In some illustrative embodiments, seal 184 are made of one or more materials, such as deformable thermoplastic, polyurethane material, fibre reinforced materials, carbon, glass Glass, cotton, wire fibers, cloth and/or any combination of them.In the exemplary embodiment, seal 184 is by being arranged on heat Cloth in plastic material is formed, and cloth can include carbon, glass, wire, cotton fiber and/or its any combinations.Several In illustrative embodiments, seal 184 is made of at least fibre reinforced materials, it prevents or at least reduce layering.In example In property embodiment, the hardness of seal 184 is 95A or bigger, or hardness is 69D or bigger.In several exemplary implementations In mode, valve body 168 is harder than seal 184 and/or rigid bigger.

In the exemplary embodiment, with reference to Fig. 2,3,10 and 11, inlet valve 54 is eliminated from pump group part 10, and with cloth The inlet valve 150 put in fluid passage 38 substitutes.However, tapered interior shoulder 43 is omitted from fluid end block 18, and with axial direction Towards interior shoulder 224 substitute (shown in Figure 10), the interior shoulder 224 being axially facing by fluid end block 18 fluid inlet channel 38 enlarged diameter portion 38a is limited.Alternatively, which can be described as including tapered interior shoulder 43, But when being measured from axis 42, the taper angle of the tapered interior shoulder 43 is 90 degree.

When inlet valve 150 is arranged in fluid passage 38, the outer shoulder 156 of valve seat 152 and the interior shoulder of fluid end block 18 Portion 224 engages.O-ring 88 (as shown in Figure 3) is arranged in annular groove 90, and sealingly engages the inner surface of fluid end block 18 46.The outer surface 86 of the main body 80 of the valve seat 152 of inlet valve 150 engages the inner surface 46 of fluid end block 18.In exemplary implementation In mode, at least reduced diameter portion of fluid passage 38 divides 38b to be tapered so that its internal diameter is along fluid passage 38 remote Reduce on the axial direction of enlarged diameter parts 38a.In the exemplary embodiment, the shape between outer surface 86 and inner surface 46 Into interference fit, so as to prevent valve seat 152 from deviating from from fluid passage 38.The surface of the lower bond valve body 168 of spring 108 200, while the upper bond valve spring retainer 72 of spring 108.Therefore, the spring 108 of inlet valve 150 is in surface 200 and valve Compressed between door spring retainer 72.

In the exemplary embodiment, with reference to figure 2,3,10 and 11, outlet valve 56 is omitted from pump group part 10, and with entering The identical outlet valve of mouth valve 150 substitutes, and the outlet valve is disposed in fluid passage 40.However, fluid end block 18 omits Tapered interior shoulder 48, and the interior shoulder to be axially facing (being not shown, but identical with shoulder 224) substitutes, the interior shoulder Portion is limited by the enlarged diameter portion 40a of the fluid outlet channels 40 of fluid end block 18.Alternatively, which can To be described as including tapered interior shoulder 48, but when being measured from axis 42, the taper angle of the tapered interior shoulder 48 is 90 Degree.

The outlet valve identical with inlet valve 150 is disposed in fluid passage 40 and engages fluid end block 18, and mode with Inlet valve 150 is disposed in fluid passage 38 and the mode of engagement fluid end block 18 is identical, except an exception.This exception It is related to the spring 108 of the outlet valve identical with inlet valve 150；More specifically, the top of the spring 108 of outlet valve is compressed against On the bottom of plug 64, rather than the valve spring for being compressed against being compressed against on the top of the spring 108 of inlet valve 150 is protected On 72 corresponding component of holder.

In operation, in the exemplary embodiment, with continued reference to Fig. 1-11, plunger 32 moves back and forth in hole 34, past Pressure chamber 36 is passed in and out again.That is, plunger 32 flatly moves back and forth, as shown in Fig. 2, from and towards fluid passage axis Line 42.In an illustrative embodiments, engine or motor (not shown) drive the bent axle being enclosed in housing 16 (not show Go out) so that plunger 32 moved back and forth in hole hence into leave pressure chamber 36.

When plunger 32, which moves back and forth, leaves pressure chamber 36, inlet valve 150 is opened.More specifically, when plunger 32 moves During away from fluid passage axis 42, the pressure in pressure chamber 36 reduces, so as to produce pressure differential on inlet valve 150 and make valve Component 154 is moved up relative to valve seat 152 and fluid end block 18, as observed by from Fig. 2,3 and 10.Due to valve member 154 to Upper movement, spring 108 are compressed between valve body 168 and valve spring retainer 72, and seal 184 departs from from tapered surface 96, And inlet valve 150 is placed in its open position.Fluid in fluid inlet channel 22 flows simultaneously along fluid passage axis 42 And pressure chamber 36 is inhaled into by fluid passage 38 and inlet valve 150.In order to flow through inlet valve 150, fluid is along valve seat axis Line 84 flows through the hole 83 of valve seat 152.During fluid flows through inlet valve 150 and enters pressure chamber 36, outlet valve (with it is above-mentioned Inlet valve 150 is identical) its closed position is in, the wherein seal 184 of the valve member 154 of outlet valve engages the valve seat of outlet valve 152 tapered surface 96.Fluid continues to be inhaled into pressure chamber 36, until plunger 32 reaches it away from fluid passage axis 42 Stroke end when untill.At this time, the pressure differential at 150 both ends of inlet valve make it that 108 valve 54 of spring of entrance is not pressed further Contract or start to depressurize and extend, force the valve member 154 of inlet valve 150 relative to valve seat 152 and fluid end block 18 to moving down It is dynamic, as observed by Fig. 2,3 and 10.As a result, inlet valve 150 is set to or starts to be placed in its closed position, wherein seal 184 sealingly engage or are moved at least towards tapered surface 96.

When plunger 32 moves into pressure chamber 36 and thus shifts to fluid passage axis 42, the pressure in pressure chamber 36 Power starts to increase.Pressure in pressure chamber 36 continues to increase, until the pressure difference on outlet valve (it is identical with inlet valve 150) surpasses Predetermined set point is crossed, outlet valve is opened and allows fluid along 42 outflow pressure chamber 36 of fluid passage axis at this time, and leads to Fluid passage 40 and outlet valve are crossed, and enters fluid outlet channels 24.When plunger 32 reaches its row towards fluid passage axis 42 During journey end (that is, it discharges stroke), inlet valve 150 is in or is placed in its closed position, wherein seal 184 and tapered table Face 96 sealingly engages.

Repeat the above process, when fluid flow to fluid outlet channels 24 from fluid inlet channel 22 via pressure chamber 36, 10 pressure fluid of reciprocating pump component.In the exemplary embodiment, pump group part 10 is single-acting reciprocable valve, and wherein fluid only exists The side of plunger 32 is pumped.

In an illustrative embodiments, reciprocal with inlet valve 150 and the outlet valve identical with inlet valve 150 During the aforesaid operations of formula pump group part 10, the shape of seal 184 provides the improved contact to tapered surface 96, from And provide better seal in closed position.Specifically, in the exemplary embodiment, surface 194 is provided to tapered surface 96 Improved contact.In the exemplary embodiment, the combination of surface 194 and spherical protuberances 190 is provided to tapered table The improved contact in face 96.

In the exemplary embodiment, when inlet valve 150 is in the closed position, at least surface 194 is sealed against tapered Surface 96, and at least surface 206 of valve body 168 contacts the tapered surface 96 of valve seat 152.In several illustrative embodiments In, the contact between surface 206 and 96 is steel to steel contact, it is easy to be damaged and wears.However, frusto-conical surface 204 And 206 combination significantly reduces maximum steel contact between surface 206 and 96, considerably reduces damage and mill Damage.In some illustrative embodiments, angle 162 and and axis into 50 degree (or straight at 40 degree) with axis 84 are specified The angle 208 of line 210 into 50 degree (or straight at 40 degree) reduces the steel contact of maximum.In several exemplary embodiment party In formula, steel/polyurethane ratio reduces the steel contact of maximum.In several illustrative embodiments, valve body 168 is against table The contact area in face 96 and the ratio of seal 184 against the contact area on surface 96 reduce the steel contact of maximum.

In an illustrative embodiments, when inlet valve 150 is in the closed position, the steel between surface 206 and 96 Cause the maximum stress in the valve body 168 of valve member 154 and/or in the valve seat body 80 of valve seat 152 to steel contact.However, cut The combination of head conical surface 204 and 206 greatly reduces this maximum stress.In some illustrative embodiments, steel/poly- Urethane ratio reduces maximum stress.In several illustrative embodiments, valve body 168 against surface 96 contact area with it is close The ratio of sealing 184 against the contact area on surface 96 reduces maximum stress.

Compare the valve body 100 of Fig. 6 and the valve body 168 of Figure 10, fill valve body 168 with material increases to limit surface 204 and 206 Add intensity and reduce turbulent flow.In several illustrative embodiments, specify with axis 84 into 50 degree (or straight at 40 Degree) angle 162 and with the angle 208 of axis 210 into 50 degree (or straight at 40 degree) provide more preferable fluid flow and Contact area.

In several experiments exemplary embodiments, entering shown in the experiment benchmark embodiment and Figure 10 to inlet valve The experiments exemplary embodiment of mouth valve 150 has carried out experiment finite element analysis.Benchmark embodiment is tested to design and constructing Upper similar to inlet valve 128 as shown in Figure 6, except tapered outer shoulder 91 and correspondingly frusto-conical surface 92 is omitted it Outside；On the contrary, experiment benchmark embodiment includes the externals shoulders identical with the externals shoulders 156 of inlet valve 150, and therefore wrap Include the surface be axially facing and circumferentially extending identical with the surface of inlet valve 150 158.In experiment finite element analysis process In, the experiment benchmark embodiment and experiments exemplary embodiment of inlet valve 150 have identical valve size with identical ruler Work in very little fluid end block 18, and undergo identical operating parameter (pressure, power load etc.).

In exemplary experiment embodiment, Figure 12 is the inlet valve 150 according to Figure 10 of exemplary experiment embodiment Experiments exemplary embodiment finite element model experience experiment steel contact view.It was found that valve body 168 and pedestal Maximum steel contact between 80 is near the point A in Figure 12, its value is about 60ksi.Equivalent experiment benchmark embodiment party Formula has the maximum steel contact of about 244ksi.Therefore, inlet valve 150 causes the maximum steel between valve body 168 and pedestal 80 Contact at least reduces by 75%.This is unexpected result.The surface area portion for being adapted for steel to steel contact on surface 96 Point be about twice (2X to 2.2X), but it is this double to make maximum steel contact reduce 75%, rather than just such as may be used It is foresighted to reduce 50% like that.Therefore, it is unexpected result that maximum contact pressure, which declines 75%,.

In exemplary experiment embodiment, Figure 13 is the inlet valve 150 according to Figure 10 of exemplary experiment embodiment Exemplary experiment embodiment finite element model experience experiment stress view.It was found that due to valve body 168 and pedestal 80 Between contact and the maximum stress that produces be near the B points in Figure 13, its value is about 68ksi.Equivalent experiment benchmark is real Applying mode has the maximum stress of about 130ksi.Therefore, inlet valve 150 provide at least reduce 48% maximum stress.

In exemplary experiment embodiment, Figure 14 is the inlet valve 150 according to Figure 10 of exemplary experiment embodiment Exemplary experiment embodiment finite element model experience experiment polyurethane contact view.It was found that by seal Near the point C that the 184 maximum polyurethane contacts provided against surface 96 are located in Figure 14, and than equivalent experiment benchmark The maximum high 500psi of polyurethane contact of embodiment.

In exemplary experiment embodiment, seal 184 and the surface of the exemplary experiment embodiment of inlet valve 150 Contact area between 96 is 6.388 square inches, and between the surface 206 and surface 96 of exemplary experiment embodiment Contact area is 6.438 square inches；And the contact area between seal 184 and the surface 96 for testing benchmark embodiment For 7.166 square inches, and the contact area between surface 206 and the surface 96 of experiment benchmark embodiment is flat for 3.176 Square inch.

In the exemplary embodiment, the contact area between the seal 184 of inlet valve 150 and surface 96 is 6.388 square inches (such as polyurethane contacts), and the contact area between the surface 206 of inlet valve 150 and surface 96 For 6.438 square inches (such as steel contacts).In the exemplary embodiment, the steel of inlet valve 150/polyurethane contact ratio is Or about 1 6.438/6.388,.In an illustrative embodiments, steel/polyurethane contact ratio of inlet valve 150 is 6.82/ 6.22, or about 1.1.In an illustrative embodiments, the contact of steel/polyurethane is than scope from about 0.9 to about 1.2.Show one In example property embodiment, the contact area between the surface 206 and surface 96 of inlet valve 150, with seal 184 and inlet valve The ratio of contact area between 150 surface 96 is about 1, about 1.1, or in the range of about 0.9 to about 1.2.

In the exemplary embodiment, as shown in figures 15-18, valve member totality reference numeral 230 represents, and including Central plate-like center base 232, which defines exterior circumferential to extend convex surface 234.Valve body 236 is from base portion along valve member axis 237 extend axially upward.In the exemplary embodiment, valve member axis 237 align with the valve seat axis 84 shown in Figure 10 or Coaxially.Therefore, in some illustrative embodiments, valve member axis 237 aligns with the fluid passage axis 42 shown in Figure 10 It is or coaxial.Valve body 236 also extends radially outwardly from valve member axis 237.

As shown in FIG. 17 and 18, outer annular cavity 240 is formed in valve body 236, and defines recessed surfaces 241.Incline The surface 242 for extending to the generally tapered of recessed surfaces 241 and circumferentially extending obliquely is limited by outer annular cavity 240. The surface 244 for extending to the substantially tapered of recessed surfaces 241 and circumferentially extending is tilted upward also to be limited by outer annular cavity 240 It is fixed.

As shown in Figure 15 and 17, valve body 236 includes circular passage 246, and top surface 248 is circumferential around the circular passage 246 Extension.Annular ridge 250 is adjacent with passage 246, and is positioned radially between passage 246 and top surface 248.It is axially facing Surface 252 limited by passage 246, and projection 254 extends axially upward and leaving channel 246 from surface 252.Exemplary In embodiment, surface 252 is engaged with the end portion of the spring of the grade of spring 108 of Fig. 3.In illustrative embodiments In, projection 254 extends in the end portion of the spring of the grade of spring 108 of Fig. 3.

The extension in exterior annular housing 240 of seal 256, and it is adapted to sealingly engage the tapered surface of valve seat, example Such as the tapered surface 96 of the valve seat 152 of Figure 10.In the exemplary embodiment, seal 256 by polyurethane into.Exemplary In embodiment, extension of the seal 256 in cavity 240 helps seal 256 being fixed to valve body 236.Seal 256 Define that exterior circumferential extends outer surface 258.Circular passage 260 is formed in outer surface 258.It is spherical that seal further includes annular Projection 262.Passage 260 is vertically situated between the top surface 248 of valve body 236 and bulbous protrusion 262.In exemplary embodiment party In formula, bulbous protrusion 262 is configured to adjacent with passage 260.In the exemplary embodiment, passage 260 is vertically disposed Between top surface 248 and bulbous protrusion 262, and bulbous protrusion 262 is adjacent with passage 260.

Seal 256 further includes the upper lug 264 of circumferentially extending, it upwardly extends from passage 260 and around valve body 236 Top surface 248.Top surface 266 is limited by lug 264.As shown in figure 17, the top of the top surface 266 of seal 256 and valve body 236 Surface 248 is substantially flush.Circular passage 268 is formed in lug 264 at the outer surface 258 of seal 256.In exemplary reality Apply in mode, circular passage 268 is positioned vertically between the top surface 266 of seal 256 and circular passage 260.Showing In example property embodiment, circular passage 268 be positioned vertically the top surface 266 of seal 256 and bulbous protrusion 262 it Between.

As Figure 17 and 18 is clearly shown that, frusto-conical surface 270 and 272 is limited by seal 256.Several In a illustrative embodiments, frusto-conical surface 270 and 272 can be characterized as the first and second tapered and circumferentially extendings respectively Surface.Frusto-conical surface 270 is obliquely extended downwardly from spherical protuberances 262, and the extension of frusto-conical surface 270, which terminates at, to cut Head conical surface 272 or close to frusto-conical surface 272.Frusto-conical surface 272 is obliquely downward from frusto-conical surface 270 Extension, terminates at valve body 236 or close to valve body 236.Circular contact portion 274 is limited at frusto-conical surface 270 and butt Intersection between conical surface 272.Contact portion 274 includes at least a portion frusto-conical surface 270.In exemplary implementation In mode, contact portion 274 includes at least respective part of frusto-conical surface 270 and 272.

In several illustrative embodiments, seal 256 is integrative-structure, and therefore outer surface 258, upper lug 264, passage 268, passage 260, ball bumps 262, and surface 266 (including frusto-conical surface 270 and 272) and in passage The seals 256 of extension is each partly integrally formed in 240.

In several illustrative embodiments, seal 256 is the integrative-structure of polyurethane, and therefore surface 258, on Lug 264, passage 268, passage 260, bulbous protrusion 262, and surface 266 (including frusto-conical surface 270 and 272), and The seal 256 of extension is each partly integrally formed in the passage 240.

Valve body 236 limits the frusto-conical surface 276 extended with being inclined upwardly from base portion 232.Frusto-conical surface 278 Limited by valve body 236, frusto-conical surface 278 is in the frusto-conical surface of valve body 236 and the frusto-conical surface of seal 256 Obliquely extend between 272.

Multiple circumferentially spaced supporting legs 280 are obliquely extended downwardly from base portion 232, and suitable for slidably engaging valve seat Pedestal inner surface, such as the inner surface 85 of the pedestal 80 of valve seat 152 shown in Figure 10.In multiple illustrative embodiments In, multiple supporting legs 280 can include two, three, four, five or the supporting leg 280 more than five.

Angle 282 is limited by frusto-conical surface 278.Angle 282 can be measured from valve member axis 237.Exemplary In embodiment, the angle 282 measured from valve member axis 237 is substantially equal to as shown in Figure 10, by tapered surface 96 The angle 162 of slave valve seat axis 84 measurement limited.In the exemplary embodiment, the angle measured from valve member axis 237 282 be about 50 degree, and the angle 162 measured from valve seat axis 84 is about 50 degree.In an illustrative embodiments, From valve member axis 237 measure angle 282 be substantially equal to or greater than (for example, 51 degree, 52 degree, 53 degree, 54 degree, 55 degree or Bigger), the angle 162 in Figure 10.In an illustrative embodiments, when being measured from valve member axis 237, angle 282 Less than (for example, 49 degree, 48 degree, 47 degree, 46 degree, 45 degree or smaller), the angle 162 being substantially equal to or greater than.

Angle 286 is limited by frusto-conical surface 276.As measured from valve member axis 237, angle 286 is more than angle 282.In the exemplary embodiment, when being measured from valve member axis 237, angle 286 is about 70 degree.In exemplary implementation In mode, when being measured from valve member axis 237, angle 286 is in the range of about 60 degree to about 85 degree.In exemplary embodiment party In formula, angle 286 is in the range of about 65 degree to about 80 degree.

Angle 288 (being clearly shown that in figure 18) is limited by the frusto-conical surface 272 of seal 256.Angle 288 It can be measured from valve member axis 237.In the exemplary embodiment, when being measured from valve member axis 237, angle 288 is big In angle 282.In the exemplary embodiment, angle 282 is about 62.5 degree.Angle 282 and 288 limits angle between them 290.In the exemplary embodiment, angle 290 is about 12.5 degree.In the exemplary embodiment, angle 290 is from about In the range of 0 degree to about 25 degree.In the exemplary embodiment, angle 290 is in the range of about 5 degree to about 20 degree.Showing In example property embodiment, angle 290 is in the range of about 10 degree to about 15 degree.

Angle 292 is limited by the frusto-conical surface 270 of seal 256.Angle 292 can be surveyed from valve member axis 237 Amount.In the exemplary embodiment, when being measured from valve member axis 237, angle 292 is substantially equal to angle 282.At one In illustrative embodiments, when being measured from valve member axis 237, angle 292 is less than angle 288.As a result, such as reference numeral D₁ Shown, contact portion 274 is from frusto-conical surface 278 in the offset distance D on the direction of frusto-conical surface 278₁. In illustrative embodiments, offset distance D1 is about 0.06 inch.In the exemplary embodiment, offset distance D₁Scope From about 0.04 inch to about 0.08 inch.In the exemplary embodiment, offset distance D₁Scope from more than 0 inch to About 0.1 inch.In the exemplary embodiment, frusto-conical surface 270 and 278 is spaced apart with parallel relation, and therebetween Parallel interval limits offset distance D.

In an illustrative embodiments, valve member 230 is adjusted and is sized for SPM SP4 full-open types oil Well service seat (SPM SP4full open well service seat).

In the exemplary embodiment, valve member 230 is made of 8620 alloy steel materials of AISI.

In the exemplary embodiment, valve member 230 can be relative to valve seat (valve seat 152 of such as Figure 10) and fluid end block (the fluid end block 18 of such as Figure 10) (is not shown but below in closed position (be not shown but be described below) and open position Description) between move.In such embodiment, valve seat 152 is deviated from valve member 230 so that tapered surface 96 is from valve structure Part 230 deviates certain distance (not shown).

In the exemplary embodiment, seal 256 is molded in the appropriate location in valve body 236.In exemplary reality Apply in mode, seal 256 is preformed and is then attached to valve body 236.In the exemplary embodiment, seal 256 It is incorporated into valve body 236.As described above, in the exemplary embodiment, seal 256 is made of polyurethane.In several examples Property embodiment in, seal 256 is made of one or more materials, such as deformable thermoplastic material, polyurethane material, fine Tie up reinforcing material, carbon, glass, cotton, wire fibers, cloth and/or its any combinations.In the exemplary embodiment, seal 256 are made of the cloth being arranged in thermoplastic, and cloth can include carbon, glass, wire, cotton fiber and/or its What is combined.In several illustrative embodiments, seal 256 is made of at least fibre reinforced materials, it prevents or at least subtracts Few delamination.In an illustrative embodiments, seal 256 has the hardness of 95A or bigger, or the hardness of 69D or bigger. In several illustrative embodiments, valve body 236 is harder than seal 256 and/or rigidity higher.

In the exemplary embodiment, the valve member 154 of Figure 10 and Figure 11 is omitted, and is substituted with valve member 230.Grasping In work, in such embodiment, with continued reference to Fig. 1-18, plunger 32 is moved back and forth in hole 34, back and forth entered and left Pressure chamber 36.That is, plunger 32 moves to and fro as observed by Fig. 2 away and towards fluid passage axis 42. In illustrative embodiments, engine or motor (not shown) drive the bent axle (not shown) being enclosed in housing 16, so that Plunger 32 moves back and forth in hole 34, so as to pass in and out pressure chamber 36.

When plunger 32, which moves back and forth, leaves pressure chamber 36, inlet valve 150 is opened.More specifically, work as plunger 32 from stream When body passage axis 42 moves away from, the pressure in pressure chamber 36 reduces, so as to produce pressure differential on inlet valve 150 and make Valve member 230 is moved up relative to valve seat 152 and fluid end block 18.Due to moving up for valve member 230, spring 108 exists Compressed between valve body 236 and valve spring retainer 72, seal 256 departs from from tapered surface 96, and inlet valve 150 is therefore It is placed in its open position.Fluid in fluid inlet channel 22 flows along fluid passage axis 42 and passes through fluid passage 38 and inlet valve 150, it is inhaled into pressure chamber 36.In order to flow through inlet valve 150, fluid flows through valve seat along valve seat axis 84 152 hole 83.During fluid is by 150 feed pressure chamber 36 of inlet valve, outlet valve 56 is (with above-mentioned inlet valve 150 It is identical) its closed position is in, the wherein seal 256 of the valve member 230 of outlet valve 56 engages the valve seat 152 of outlet valve 56 Tapered surface 96.Fluid continues to be inhaled into pressure chamber 36, until plunger 32 is in its stroke end away from fluid passage axis 42 End.At this time, the pressure differential on inlet valve 150 causes the spring 108 of inlet valve 150 not to be further compressed, or starts to depressurize And extend, force the valve member 230 of inlet valve 150 to be moved down relative to valve seat 152 and fluid end block 18.As a result, inlet valve 150 are placed in or start to be placed in its closed position, and wherein seal 256 sealingly engages tapered surface 96, or at least court Tapered surface 96 to move.

When plunger 32 moves into pressure chamber 36 and shifts to fluid passage axis 42, the pressure in pressure chamber 36 is opened Begin to increase.Pressure in pressure chamber 36 continues to increase, and until the pressure difference on outlet valve 56 exceedes predetermined set point, goes out at this time Mouth valve 56 is opened, and allows outgoing fluid pressure chamber 36, passes through fluid passage 40 and outlet valve along fluid passage axis 42 56, and enter fluid outlet channels 24.When plunger 32 reaches its stroke (that is, it discharges stroke) end towards fluid passage axis 42 During end, inlet valve 54 is to be in or be placed in its closed position, and wherein seal 256 sealingly engages tapered surface 96.

In an illustrative embodiments, the construction of seal 256 provides the improved sealing with tapered surface 96 Engagement, thus provides improved sealing when inlet valve 150 and/or identical outlet valve 56 are in respective closed position.Tool Body, in the exemplary embodiment, when valve member 230 is moved down relative to valve seat 152, the offset of contact portion 274 Distance D₁Ensure that at least circular contact portion 274 sealingly engages tapered surface 96.More specifically, offset distance D1 ensures to work as valve When component 230 moves down, circular contact portion 274 will contact tapered surface 96 before frusto-conical surface 278, it is ensured that close Sealing engagement between sealing 256 and surface 96.In the exemplary embodiment, when valve member 230 is downward relative to valve seat 152 When mobile, the offset distance D of contact portion 274₁Ensure that at least contact portion 274 sealingly engages tapered surface 96.In example In property embodiment, as valve member 230 is moved down relative to valve seat 152, contact portion 274 is other valve member 230 Tapered surface 96 is engaged before surface.For example, contact portion 274 is before frusto-conical surface 278, frusto-conical surface 272 Before, and/or before frusto-conical surface 270 tapered surface 96 is engaged.In the exemplary embodiment, angle 290 ensures to work as When valve member 230 is moved down relative to valve seat 152, at least contact portion 274 sealingly engages tapered surface 96.Exemplary In embodiment, the difference between difference and angle 282 and angle 288 between angle 292 and angle 288 ensures to work as valve structure At least contact portion 274 sealingly engages tapered surface 96 when part 230 is moved down relative to valve seat 152.

In the exemplary embodiment, when valve member 230 is moved downward relative to valve seat 152, first, contact portion 274 sealingly engage tapered surface 96；As described above, at least a portion of frusto-conical surface 270, or frusto-conical surface 270 and 272 at least appropriate section sealingly engages tapered surface 96.When valve member 230 continues to move down relative to valve seat When, seal 256 is from 274 radial deformation of contact portion.As a result, in an illustrative embodiments, frusto-conical surface 270 At least respective extention with 272 also sealingly engages surface 96.

Repeat the above process, reciprocating pump component 10 is flowed in fluid from fluid inlet channel 22 to be flow to via pressure chamber 36 Pressure fluid during fluid outlet channels 24.In the exemplary embodiment, pump group part 10 is single-action reciprocating pump, wherein fluid Only it is pumped in the side of plunger 32.

In several illustrative embodiments, the valve member 78 of Fig. 3 is omitted, and is substituted with valve member 230.Show some In example property embodiment, valve member 230 is used together with any valve seat, includes but not limited to valve seat 76 and valve seat 128.Several In illustrative embodiments, valve member 230 is together with other valve seats with the configuration different from valve seat 76 and/or valve seat 128 Use.In some illustrative embodiments, valve member 230 is to be used together with inlet valve with any one in outlet valve, Including inlet valve 54, inlet valve 128, the inlet valve and outlet valve of outlet valve 56 and/or other different configurations.

In the exemplary embodiment, as shown in figs. 19-21, valve member is usually represented by reference numeral 294, and including with The identical multiple components of the corresponding component of valve member 230, identical component are indicated with identical reference numeral.Such as the institutes of Figure 19 and 21 Show, valve member 294 includes rupture disc assembly (rupture disc assembly) 296.

As being clearly shown that in figure 21, in valve body 236 formed counterbore 298, counterbore 298 substantially with valve structure Part axis 237 is coaxial.Counterbore 298 extends through valve body 236 always.Counterbore 298 includes enlarged diameter portion 298a and diameter subtracts Fraction 298b.Reduced diameter portion divides 298b to define the fluid passage 299 for extending axially through valve body 236.Counterbore 298 limits Interior shoulder 300.

Rupture disc assembly 296 is arranged in the enlarged diameter portion 298a of counterbore 298.Rupture disc assembly 296 includes insurance Piece 301, it includes annular mounting portion 302 and arch broken portion (rupture portion) 304, and installation section 302 surrounds The broken portion 304 extends circumferentially over upon.Installation section 302 is arranged in the enlarged diameter portion 298a of counterbore 298, and with it is interior Shoulder 300 engages.Installation section 302 includes the circular passage 306 being formed in its end, the circular passage 306 and interior shoulder 300 engagements.One or more lip rings 308 extend in circular passage 306 and sealingly engage at least installation section 302 With interior shoulder 300.

In some illustrative embodiments, the either of which in valve member 78,154 or 230 is omitted, and with valve structure Part 294 substitutes.In some illustrative embodiments, valve member 294 is used in inlet valve, the entrance in such as Figure 10 and 11 Valve 150.In several illustrative embodiments, the operation of pump group part 10 and valve member 294 substantially with valve member 230 The operation of pump group part 10 is identical, as discussed above with respect to Figure 15-18, except the operation of increased rupture disc assembly 296.More Specifically, in operation, with reference to Fig. 1-2 1, when plunger 32 is moved in pressure chamber 36, inlet valve 150 is in its close stance Put and Fluid pressure is at least being applied to the safety plate of rupture disc assembly 296 along fluid passage axis 42 on axial direction On 301.Sealing engagement between one or more lip rings 308 and at least installation section 302 and interior shoulder 300 prevent or Person at least prevents fluid from being flowed out from pressure chamber 36, around safety plate 301 and thereby returns in fluid inlet channel 22.Pumping During the operation of component 10, if the Fluid pressure in pressure chamber 36 meets or exceeds acceptable predetermined value, in safety plate Predetermined pressure difference is produced on 301, then the broken portion 304 of safety plate 301 ruptures.Therefore, fluid passage 299 is via fluid inlet Passage 38 is in fluid communication with pressure chamber 36, and rupture disc assembly 296 allows fluid to pass through fluid inlet from pressure chamber 36 Passage 38 flows through installation section 302, so as to back at least fluid inlet channel 22 and flow out pump group part 10.The fluid stream It is dynamic to reduce or mitigate the pressure in pump group part 10.During operation, it is broken in safety plate 301 in some illustrative embodiments After splitting, the diameter of broken portion 304 divides 298a less than the reduced diameter portion of counterbore 298, so as to add the safety plate of rupture The possibility but not generation pressure spike that 301 fragment is flowed downward out from counterbore 298.

In several illustrative embodiments, valve member 294 is used in outlet valve 56 or any other outlet valve etc. Outlet valve in.In such embodiment, the operation of the pump group part 10 with valve member 294 substantially with valve member The operation of 230 pump group part 10 is identical, as discussed above with respect to Figure 15-18, except rupture disc assembly 296 operation with Outside.In operation, with reference to figure 1-21, the fluid in pressure chamber 36 is flowed along fluid passage axis 42 and led to by fluid Road 40 and outlet valve 56, and enter fluid outlet channels 40 and 24.Fluid pressure is along fluid passage axis 42 from fluid outlet Passage 40 and/or fluid outlet channels 24 are at least being applied to the safety plate of rupture disc assembly 296 generally downward on axial direction On 301.Sealing engagement between one or more lip rings 308 and at least installation section 302 and interior shoulder 300 prevents Or fluid is at least prevented to flow around safety plate 300 and therefore incoming fluid passage 299 and return at least in pressure chamber 36. In the exemplary embodiment, outlet valve 56 is in its closed position, and therefore seal 256 and the sealing engagement on surface 96 It is also prevented from or at least prevents fluid from being flowed around seal 256 and back at least pressure chamber 36.If applied to insurance Fluid pressure on piece 301 meets or exceeds predetermined pressure value, predetermined pressure difference is produced on safety plate 301, then safety plate 301 broken portion 304 ruptures.Therefore, fluid passage 299 is in fluid communication with fluid outlet channels 40, and rupture disc assembly 296 permission fluids from fluid outlet channels 40 and/or fluid outlet channels 24 flow through rupture disc assembly 296 and therefore back to In few pressure chamber 36.Fluid flowing reduces or mitigates the pressure in pump group part 10.During operation, in some exemplary realities Apply in mode, after the rupture of safety plate 301, the diameter of broken portion 304 divides 298a less than the reduced diameter portion of counterbore 298, Therefore the fragment for adding the safety plate 301 of rupture flows downward out the possibility without generation pressure spike from by counterbore 298.

Therefore, either for inlet valve or outlet valve, for example, inlet valve 150 and/or outlet valve 56 or any other Entrance and/or outlet valve, rupture disc assembly 296 are all operated to discharge the pressure in pump group part 10, prevent the further increasing of pressure Add, to prevent or otherwise significantly reduce pump group part 10, one or more miscellaneous parts of pump group part, and/or flowed with it Body connects the possibility of the damage of any system and/or component.

In the exemplary embodiment, as illustrated in figs. 22-25, valve member is usually represented by reference numeral 310, and including The multiple components identical with the corresponding component of valve member 230, identical component are represented with identical reference numeral.In several examples In property embodiment, the component of valve member 310 is sized so that being dimensioned for for larger entrance of valve member 310 Valve and outlet valve and/or larger fluid passage.For example, in some illustrative embodiments, the ruler of the component of valve member 310 The size of the very little corresponding component more than valve member 230.In the exemplary embodiment, the relevant radii of passage 268 and 260 increases Add.In an illustrative embodiments, other sizes, such as the height of projection 254 are adjusted, the diameter of seal 256, and The diameter of valve body 236.In some illustrative embodiments, the height of valve member 310 is more than the height of valve member 230.

Valve member 310 includes the multiple circumferentially spaced supporting legs 312 extended from base portion 232 and away from valve body 236.Showing In example property embodiment, supporting leg 280 bigger of the supporting leg 312 than Figure 15-21.For example, supporting leg 312 can be longer than supporting leg 280, more Width, and/or diameter bigger.In the exemplary embodiment, supporting leg 312 is suitable for the interior table for slidably engaging larger pedestal Face, for example, the pedestal 80 of Figure 10.In the exemplary embodiment, supporting leg 312 is sized to slidably engage and has The pedestal of about 3.13 inches of internal diameter.In the exemplary embodiment, supporting leg 312 is sized to slidably engage tool There is the pedestal of the internal diameter from about 3 inches to about 4 inches.In an illustrative embodiments, the size of supporting leg 312 is set Into slidably engaging the pedestal with internal diameter from about 3 inches to about 5 inches.In some illustrative embodiments, The sizes of the component of valve member 310 are adjusted, including at least the radius of the component of valve member 310, diameter, length and/or height Degree so that valve member 310 is configured for having in the valve seat and fluid passage of increased in size.It is for example, exemplary at one In embodiment, valve member 310 is configured for SPM SP5 full-open type well services seats.

In several illustrative embodiments, valve body 236 is limited to the frusto-conical surface 278 and seal of valve body 236 The step 313 of the intersection of 256 frusto-conical surface 272.During the operation of valve member 310, step 313 prevents or at least Seal 156 is reduced to protrude into the region between frusto-conical surface 278 and the tapered surface 96 of pedestal 80.

In the exemplary embodiment, the operation of valve member 310 is substantially identical with the operation of valve member 230, therefore will It is not described in detail.

In the exemplary embodiment, as shown in figures 26-28, valve member is substantially represented by reference numeral 314, and including The multiple components identical with the corresponding component of valve member 310, identical component are represented with identical reference numeral.Valve member 314 Rupture disc assembly 316 is further included, rupture disc assembly 316 includes identical with the corresponding component of the rupture disc assembly 296 of valve member 294 Several components, except the size of the corresponding component of rupture disc assembly 316 is determined according to the increased in size of valve member 314.Cause Rupture disc assembly 316 will not be described in detail further in this.

In the exemplary embodiment, the operation of valve member 314 is substantially identical with the operation of valve member 294, therefore valve The operation of component 314 will not be described in further detail.

In the exemplary embodiment, as shown in figure 29, the frusto-conical surface 272 of seal 256 is omitted, and with one Frusto-conical surface 272a and 272b are substituted.Frusto-conical surface 272a is obliquely extended downwardly from frusto-conical surface 270 (invisible in Figure 29).Therefore, circular contact portion 274 is limited at frusto-conical surface 270 and frusto-conical surface Intersection between 272a.Similarly, frusto-conical surface 272b is obliquely extended downwardly from frusto-conical surface 272a, and eventually Terminate at or near the frusto-conical surface 278 of valve body 236.Between frusto-conical surface 272a and frusto-conical surface 272b Intersection limit annular bending part 318.

Angle 320 is limited between the frusto-conical surface 272a of valve body 236 and frusto-conical surface 278.Exemplary In embodiment, angle 320 is about 12.5 degree.In the exemplary embodiment, the scope of angle 320 is from about 0 degree to big About 25 degree.In the exemplary embodiment, the scope of angle 320 is from about 5 degree to about 20 degree.In illustrative embodiments In, angle 320 is in the range of about 10 degree to about 15 degree.Angle is limited by the frusto-conical surface 272b of seal 256 (not show Go out).The angle limited by frusto-conical surface 272b can be measured from valve member axis 237.In the exemplary embodiment, when It is substantially equal to when being measured from valve member axis 237 by the frusto-conical surface 272b angles limited by frusto-conical surface 278 The angle 282 (figure 25 illustrates) of restriction.

Such as reference numeral D₂It is shown, frusto-conical surface 272b extend beyond the frusto-conical surface 278 1 of valve body 236 away from From D₂.Therefore, annular bending part 318 and frusto-conical surface D separated by a distance₂.In the exemplary embodiment, seal 256 The construction of (that is, frusto-conical surface 272a and 272b and annular bending part 318) provides improved manufacturing characteristics.

In the exemplary embodiment, as shown in figure 30, the upper lug 264 of the circumferentially extending of seal 256 is limited and is located at The top of circular passage 268 (as observed in fig. 30) and the recessed annular surface 322 adjacent with top surface 266.Recessed annular The vertical extended distance D between top surface 266 and circular passage 268 of surface 322₃.It is close in another illustrative embodiments The upper lug 218 of the circumferentially extending of sealing 184 includes recessed annular surface 322.In the exemplary embodiment, seal 256 (that is, recessed annular surface 322) provides improved manufacturing characteristics.

In some illustrative embodiments, valve 54,56,128 and 150 or its component, such as valve seat 76,129 and 152 with And valve member 78,154,230,294,310 and 314 can be configured to the presence of the high abrasive fluids of such as drilling mud Down and under relatively high pressure, such as run in the case where being up to about the pressure of 15,000psi or higher.Some exemplary In embodiment, instead of or except for reciprocating pump in addition to, valve 54,56,128 and 150 or its component such as valve seat 76,129 It can be used for other kinds of pump and fluid system with 152 and valve member 78,154,230,294,310 and 314.Correspondingly, Instead of or except for reciprocating pump in addition to, fluid end block 18 or its feature can be used for other kinds of pump and fluid system.

In several illustrative embodiments, although different steps, process and process be described as showing as it is different Behavior, but one or more steps, one or more processes and/or one or more program can also different order, at the same time And/or sequentially carry out., can be by step, excessively process and/or program and into one or more in some illustrative embodiments A step, process and/or program.

In several illustrative embodiments, it is convenient to omit one or more of each embodiment operating procedure.This Outside, in some cases it may using some features of the disclosure, without correspondingly using other features.It is in addition, above-mentioned One or more of embodiment and/or modification can whole or in part with above-mentioned other embodiment and/or modification Any one or more be combined.

In the foregoing description of certain embodiments, for the sake of clarity, specific term is employed.However, the disclosure The particular term so selected is not limited to, and it will be understood that each particular term includes operating in a similar manner to realize Other technically equivalent ones of similar techniques purpose.Such as " left side " and " right side ", the term of " preceding " and " rear ", "up" and "down" etc. by with Make convenient word to provide reference point, and be not interpreted restrictive term.

In the present specification, word "comprising" should be understood with the implication of its open to the outside world, that is to say, that with " bag expands " Meaning understands, therefore is not limited to the implication of its " closing ", i.e. " only by ... form ".Corresponding implication is attributed to them and goes out Existing corresponding word " comprising ", "comprising" and " including ".

In addition, above only describes some embodiments of the present invention, and disclosed embodiment can not departed from Scope and spirit in the case of it is changed, change, addition and/or change, these embodiments be it is illustrative and It is nonrestrictive.

It is presently believed to be most practical and preferred embodiment in addition, having been combined invention has been described, but It is that should be understood that the invention is not restricted to disclosed embodiment, but on the contrary, it is intended to cover is included in the reality of the present invention Various modifications and equivalent arrangements in matter and scope.In addition, various embodiments described above can combine other embodiment party Formula is realized, for example, the aspect of an embodiment can be combined with the aspect of another embodiment to realize still further Embodiment.In addition, each independent characteristic or component of any given component may make up other embodiment.

Claims

1. a kind of valve member for reciprocating pump component, the valve member includes：

Valve body, it includes the first frusto-conical surface, and the valve body limits outer annular cavity formed therein；With

The seal extended in the outer annular cavity, the seal include：

First tapered and circumferentially extending surface, it is adapted to sealingly engage the tapered surface of the valve seat of the reciprocating pump component； With

Annular bulbous protrusion, described first it is tapered and circumferentially extending surface obliquely extend from the annular bulbous protrusion, first gradually Contracting and circumferentially extending surface extend between the annular bulbous protrusion and the first frusto-conical surface of the valve body.

2. valve member according to claim 1, wherein the seal further includes the passage being formed in its outer surface, institute Passage is stated to be located between the annular bulbous protrusion of the seal and the top surface of the valve body.

3. valve member according to claim 1, wherein the valve member limits first axle, the first axle with by institute The second axis for stating valve seat restriction is coaxial；

First frusto-conical surface of wherein described valve body limits the first angle from first axle measurement；And

The tapered surface of wherein described valve seat limits the taper angle from second axis measurement, and the taper angle is substantially Equal to the first angle.

4. valve member according to claim 3, wherein the valve body further includes the second frusto-conical surface, the valve body First frusto-conical surface is in the second frusto-conical surface of the valve body and the first tapered and circumferentially extending of the seal Obliquely extend between surface；And

The second angle that the second frusto-conical surface restriction of wherein described valve body is measured from the first axle, described second jiao Degree is more than the first angle.

5. valve member according to claim 1, wherein the valve body and the seal limit respectively be arranged to it is described The first surface product and second surface product that the tapered surface of valve seat is in contact；And

The ratio that wherein described first surface product is accumulated with the second surface is in the range of about 0.9 to about 1.2.

6. valve member according to claim 1, wherein the first frusto-conical surface and the seal in the valve body First it is tapered and circumferentially extending surface at least a portion between limit an offset distance, the offset distance is perpendicular to institute The side for stating at least the first frusto-conical surface of valve body upwardly extends.

7. valve member according to claim 6, wherein the first frusto-conical surface of the valve body is limited from by the valve The first angle for the first axle measurement that component limits, the first axle are configured to the second axis with being limited by the valve seat Line is coaxial；

First tapered and circumferentially extending surface at least a portion of wherein described seal is limited to be measured from the first axle Second angle, the second angle is substantially equal to the first angle；And

Wherein described first angle and the second angle, which are substantially equal to, to be limited by the tapered surface of the valve seat and from described The taper angle of second axis measurement.

8. valve member according to claim 1, wherein the seal further includes：

Second tapered and circumferentially extending surface, it is in the first tapered and circumferentially extending surface of the seal and the valve body Obliquely extend between first frusto-conical surface；With

Circular contact portion, it is tapered between circumferentially extending surface by the described first tapered and circumferentially extending surface and second Intersection limits, and the circular contact portion includes described first tapered and circumferentially extending surface at least a portion.

9. valve member according to claim 8, wherein, the first frusto-conical surface of the valve body is limited from by the valve The first angle for the first axle measurement that component limits, the first axle are configured to the second axis with being limited by the valve seat Line is coaxial；

Described first tapered and circumferentially extending surface of wherein described seal and the described second tapered and circumferentially extending surface point The second angle and third angle from first axle measurement are not limited, and the second angle is less than the third angle and base This is equal to the first angle.

10. valve member according to claim 1, wherein the valve body is further defined along the first axle formation of the valve body Counterbore, the first axle are configured to coaxial with the second axis that is limited by the valve seat, and the counterbore is limited to the valve Enlarged diameter portion, reduced diameter portion in body are divided and interior shoulder, the reduced diameter portion point limit fluid passage；And

Wherein described valve member, which further includes, to be arranged in the enlarged diameter portion of the counterbore and is connect with the interior shoulder of the valve body The safety plate of conjunction.

11. a kind of valve member for reciprocating pump component, the valve member includes：

Include the valve body of the first frusto-conical surface, the valve body limits outer annular cavity formed therein；With

The seal extended in the outer annular cavity, the seal include being configured to and the reciprocating pump component Valve seat tapered surface sealingly engage first it is tapered and circumferentially extending surface；

Wherein the valve body the first frusto-conical surface and the seal it is first tapered and circumferentially extend surface extremely Offset distance is limited between a few part, the offset distance is at least the first frusto-conical surface perpendicular to the valve body Side upwardly extends.

12. valve member according to claim 11, wherein the first frusto-conical surface of the valve body is limited from by described The first angle for the first axle measurement that valve member limits, the first axle are configured to second limited with the valve seat Axis coaxle；

Wherein described first angle and the second angle are substantially equal to be limited by the tapered surface of the valve seat and from described The taper angle of second axis measurement.

13. valve member according to claim 11, wherein the seal further includes：

14. valve member according to claim 13, wherein the first frusto-conical surface of the valve body is limited from by described Valve member limit first axle measurement first angle, the first axle be configured to limited by the valve seat second Axis coaxle；

Wherein described seal first it is tapered and circumferentially extending surface and second it is tapered and circumferentially extending surface limit respectively from The second angle and third angle of the first axle measurement, the second angle are less than the third angle and substantially equal to institute State first angle.

15. valve member according to claim 11, wherein the seal further includes：

Annular bulbous protrusion, first it is tapered and circumferentially extending surface obliquely extend from the annular bulbous protrusion, first it is tapered with Circumferentially extending surface extends between the annular bulbous protrusion and the first frusto-conical surface of the valve body；With

The passage formed in its outer surface, the passage are located at the annular bulbous protrusion of the seal and the top table of the valve body Between face.

16. valve member according to claim 11, is configured to being limited by the valve seat wherein the valve member limits The coaxial first axle of second axis；

The tapered surface of wherein described valve seat limits the taper angle from second axis measurement, and the taper angle is substantially etc. In the first angle.

17. valve member according to claim 16, wherein the valve body further includes the second frusto-conical surface, the valve body The first frusto-conical surface the valve body the second frusto-conical surface and the seal it is first tapered and circumferential prolong Inclination extends between stretching surface；And

18. valve member according to claim 11, wherein the valve body and the seal limit respectively be configured to The first surface product and second surface product that the tapered surface of the valve seat is in contact；And

The ratio that wherein described first surface product is accumulated with second surface is in the range of about 0.9 to about 1.2.

19. valve member according to claim 11, wherein, the valve body further defines linear along the first axle of the valve body Into counterbore, the first axle be configured to it is coaxial with the second axis that is limited by the valve seat, described in the counterbore limits Enlarged diameter portion, reduced diameter portion in valve body are divided and interior shoulder, the reduced diameter portion point define fluid passage.

20. valve member according to claim 19, further includes：

Safety plate, it is arranged in the enlarged diameter portion of counterbore and is engaged with the interior shoulder of the valve body；With

Lip ring, it sealingly engages at least described safety plate and the interior shoulder.