CN103443458A - Suction port lock nut with stub buttress threads - Google Patents
Suction port lock nut with stub buttress threads Download PDFInfo
- Publication number
- CN103443458A CN103443458A CN2009801566733A CN200980156673A CN103443458A CN 103443458 A CN103443458 A CN 103443458A CN 2009801566733 A CN2009801566733 A CN 2009801566733A CN 200980156673 A CN200980156673 A CN 200980156673A CN 103443458 A CN103443458 A CN 103443458A
- Authority
- CN
- China
- Prior art keywords
- screw thread
- cover plate
- thread
- opening
- pump assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/125—Cylinder heads
Abstract
A reciprocating pump assembly having a block body, a cylinder chamber in the block body, a plunger reciprocatingly disposed in the block body, an opening in the block body adjacent the cylinder chamber, and a cover plate in the opening. Threads on the outer periphery of the cover plate engage threads formed within the opening. The threaded outer periphery of the cover plate extends into the cylinder chamber and past the threaded portion of the opening so that the load on the cover plate transfers from fully formed threads on the cover plate to threads formed on the opening.
Description
The cross reference of related application
The application requires preference and the benefit with the U.S. Provisional Application that patent application serial numbers on the docket is 61/138,776, the applying date is on December 18th, 2008, and its disclosed full content is incorporated herein by reference.
Technical field
Present invention relates in general to reciprocating pump, and relate in particular to improving equipment for the locking nut of reciprocating pump.
Background technique
In oilfield operations, for various purposes are often used reciprocating pump.Some reciprocating pumps, be commonly referred to as " operation pump ", and typically pumping is for downhole operations, such as the operation fluid of cement grouting, acidification or fractured well.These operation pumps typically can operate the relatively short time period, but use frequently, such as one week several times.Usually, they are installed to truck or slide rail is put in order to be sent to different well locations.
Reciprocating pump in oil field typically is included in the interior to-and-fro motion of cylinder in order to the plunger by cylinder by fluid pumping.Cylinder generally includes fluid input and fluid output.Opening in pump provides the path that arrives cylinder interior.The threaded Intake Cover that opening typically can be disassembled from cylinder seals.
Summary of the invention
Here disclosed a kind of reciprocating pump assembly, it comprises cylinder body, cylinder inner cavity in cylinder body, reciprocally be arranged in to motion the plunger in cylinder body, in cylinder body, the opening of contiguous cylinder inner cavity, be formed on the screw thread in opening, the cover plate in opening, with the thread surface on the periphery of cover plate, described thread surface engagement is formed on the screw thread in opening and stretches out in cylinder body over the screw thread on opening.Thread surface on cover plate can comprise that at least two circles stretch out the unloaded screw thread over the screw thread in opening in cylinder body.Thread surface on cover plate can there is a length with opening in the load screw thread of threaded engagement and a length stretch out the unloaded screw thread over the screw thread in opening in cylinder body, and the length of load screw thread is greater than the length of unloaded screw thread.Thread surface on the outer periphery of cover plate can comprise the screw thread had with the root portion of crooked outline.Thread surface on the outer periphery of cover plate can have English buttress thread.Thread surface on the outer periphery of cover plate can comprise that height of thread is about 60% to about 70% screw thread of pitch.Thread surface on the outer periphery of cover plate can comprise the screw thread with butt tooth top.At least some unloaded screw threads can be basically identical with the load screw thread.Thread surface on the outer periphery of cover plate can comprise having the screw thread of rear flank of paths arrangement that becomes the angle orientation of about 45 ° along the angle of the axis with respect to cover plate.
Also disclosed a kind of reciprocating pump assembly, it comprises cylinder block, is formed on a plurality of cylinder inner cavities in cylinder body, reciprocally be arranged in to motion the plunger in each cylinder inner cavity, in cylinder body and at a plurality of circular opens of the end of each inner chamber, be formed on the screw thread in opening, and cover plate.Wherein each cover plate has the screw thread on the periphery that is formed on it, the screw thread of at least a portion length is shaped fully and is had maximum depth, and a plurality of cover plates are connected to the part that the maximum depth that makes each cover plate screw thread in each opening partly meshes the end that approaches each inner chamber of each screw thread in opening coaxially.The part of the maximum depth of each cover plate screw thread part can be not with opening in thread engagement and the screw thread from opening further inside.
In optional mode of execution, a kind of pump assembly has been described, it has cylinder body, and the cylinder inner cavity in cylinder body reciprocally is arranged in to motion the plunger in cylinder body, the opening of contiguous cylinder inner cavity in cylinder body, be formed on the screw thread in opening, the cover plate in opening, the thread surface on the outer periphery of cover plate, this thread surface engagement is formed on the screw thread in opening and has at least two unloaded screw threads that stretch out over the screw thread on opening in cylinder body, and surpasses the load screw thread of the length of unloaded screw thread.
The accompanying drawing explanation
Fig. 1 is the side perspective view according to reciprocating pump of the present invention.
Fig. 2 is the sidepiece partial cross-section figure of the pump of Fig. 1.
Fig. 3 is the side cross-sectional view of amplification of a part of the valve stopping element of Fig. 2.
Fig. 4 is retainer nut's the side cross-sectional view of the valve stopping element of Fig. 3.
Fig. 5 is the sectional view of amplification of retainer nut's helical thread portion.
Embodiment
Referring now to accompanying drawing, equipment of the present invention and method are more fully described, wherein mode of execution shown in the drawings.Yet, can embody this theme of the present invention and it should not be interpreted as being limited to exemplary mode of execution set forth herein with multiple different form; On the contrary, it will be comprehensive and complete that the content that these mode of executions make this disclosure is provided, and scope of the present invention is passed to those skilled in the art fully.In the text, similarly reference character is indicated similar element.Accompanying drawing for ease of reference, the term of directivity only is used to indicate and means.For example, the term of directivity such as " on ", D score, " ... on ", " ... under ", and similar terms is provided to show the position of relevance.
Will be understood that, shown in the theme of the content of this disclosure is not limited to described structure, operation, the accurate fine detail of material or mode of execution because revise and equivalent will be apparent to those skilled in the art.In drawing and description, disclosed the exemplary mode of execution of content of the present disclosure, although and used particular term, they are only used and substantially in order to illustrate, and not in order to limit.
Reciprocating pump assembly 10 has been shown in Fig. 1 in side perspective view.Assembly 10 comprises the pump part 12 that is connected to fluid cylinder part 11.The parts that crankshaft shell 13 is illustrated as covering pump part 12 and covers it.Plunger or plunger rod 16 assemblies are illustrated as reaching cylinder portion 11 from a side of crankshaft shell 13.The locking lever (stay rod) 15 of contiguous bar assembly 16 anchors to pump part 10 by cylinder portion 11.Cylinder portion 11 comprises the cylinder block 17 with a plurality of cylinder inner cavities 39 (being shown in broken lines).Each cylinder inner cavity 19 is illustrated as replacing fluid with fluid input 19 and fluid output 21 here and is communicated with.Cover the end of each cylinder inner cavity 39 with suction cover plate 22.Opening 18 is formed in cylinder block 17, is configured to receive cover plate 22.Pump assembly 10 can be easily mounted to the trailer that can drag between operating point or be installed to slideway such as for offshore operations.
With reference now to Fig. 2,, there is shown the example of pump assembly 10 in lateral section.In this example, plunger 35 is illustrated as being arranged in one of them cylinder inner cavity 39 with reciprocally moving.Although show single plunger 35, each cylinder inner cavity 39 can comprise respectively corresponding plunger 35.Each cylinder inner cavity 39 and plunger 35 comprise the thing that can be known as plunger actuator (plunger throw), and the pump assembly 10 of Fig. 1 comprises three plunger actuators like this.Existence has the mode of execution of the pump assembly 10 of non-three plunger actuators (namely, three cylinders), such as the pump assembly with four or more plunger actuators.
Rotating bent axle 25 is shown in crankshaft shell 13 and, as described in below will be in more detail, when it rotates, makes plunger 35 in the interior to-and-fro motion of cylinder inner cavity 39.Bent axle 25 comprises and is connected to the motor (not shown) and by the main shaft 30 of revolution.In one embodiment, flywheel gear 24 is illustrated as being mechanically connected to bent axle 25.Tooth on flywheel gear 24 is meshed with the tooth on actuation gear 26, and actuation gear 26 is attached to motor.Crankpin 28 is attached to main shaft 30, is illustrated as being offset and being arranged essentially parallel to from the axis Ax of bent axle 25 the axis Ax of bent axle 25.Lengthen connecting rod 27 and be shown to have around the end of crankpin 28 grapplings, between them, have bearing surface to make crankpin 28 to rotate with respect to connecting rod 27.In the mode of execution of Fig. 2, crankpin 28, from the axis Ax of bent axle 25 skew, makes when bent axle 25 rotates, and crankpin 28 is around the axis Ax of bent axle 25 along operation.Rotating connection between the end of connecting rod 27 and crankpin 28 makes connecting rod 27 to-and-fro motion.
What slider pin 31 was attached to connecting rod 27 by connecting rod 27 is attached to the slide block 29 on contrary end, the place of crankpin 28 with it.As shown in Figure 2, connecting rod 27 is essentially horizontally directed; When bent axle 25 rotates, connecting rod 27 will favour substantially horizontal.Slider pin 31 allows connecting rod 27 with respect to slide block 29 pivotables.Slide block 29 is illustrated as being arranged in flatly directed block case 32.Like this, when crankpin 28 along with the rotation of bent axle 25 during orbiting (orbit), attached connecting rod 27 pivotables and in housing 13, laterally move forward and backward so that slide block (crosshead) 29 in the interior to-and-fro motion of block case 32.Plunger rod 33 is illustrated as being connected between slide block 29 and plunger 35, and like this, when the rotation of bent axle 25 makes slide block 29 to-and-fro motion, plunger 35 is also in the interior to-and-fro motion of cylinder inner cavity 39.
The example of inlet valve 41 is shown in cylinder block (cylinder block) 17 and controls from fluid input 19 to cylinder inner cavity the fluid 39.When plunger 35 reciprocates to the outside of inner chamber 39, inlet valve 41 can open that fluid is incorporated in inner chamber 39, and, when plunger 35 to-and-fro motion are got back in inner chamber 39, inlet valve 41 closures are so that inner chamber 39 and fluid input 19 isolation.When plunger 35 longitudinally moves away from cylinder inner cavity 39, the pressure decreased of the fluid of inner chamber 39 inboards, be formed on the pressure reduction on inlet valve 41, and its activated valve 41 and permission fluid enter cylinder inner cavity 39 from fluid input 19.When plunger 35 continues to vertically move away from cylinder block 27 ground, the fluid of pumping enters cylinder inner cavity 39 until the fluid of inner chamber 39 inboards and the enough little inlet valve 41 that makes of the pressure reduction between the fluid in fluid input 19 are actuated into its operating position.
Be directed into fluid output 21 by the fluid in the inner chamber 39 of inside reciprocating plunger 35 pressurizations, described fluid output 21 it be illustrated as being formed in cylinder block 17 and contiguous cylinder inner cavity 39.Outlet valve 43 also is shown in cylinder block 17, is arranged between fluid output 21 and cylinder block floss hole 44.The fluid that outlet valve 43 is controlled from fluid output 21 to cylinder block floss hole 44.When plunger 35 starts to vertically move towards cylinder block 17, the pressure on the fluid of cylinder inner cavity 39 inboards starts to increase, and continues to increase until the pressure reduction on outlet valve 43 surpasses set point.When surpassing set point, outlet valve 43 opens to allow fluid to pass through fluid output 21 effluent gases cylinder bodies 17.In one embodiment, a side pumping fluid that only can be on plunger 35, so pump assembly 10 is single-acting reciprocating pump (single acting reciprocating pump).Valve 41 and 43 can be the spring-opposed valve by predetermined differential pressure actuated.
Suction valve stopping element 51 is shown in the contiguous cover plate 22 that sucks in cylinder block 17.Suction valve stopping element 51 comprises two critical pieces: suction valve backstop 53 and suction cover 55.The shape of suction cover 55 is general cylindrical and is designed to be arranged on hermetically in the opening 18 of cylinder block 17.
With reference now to Fig. 3,, show the side cross-sectional view of the amplification that sucks cover plate 22, this suction cover plate 22 is connected to the opening 18 in cylinder block 17.Suck the screw thread 222 on the outer periphery that cover plate 22 is included in it, it is illustrated as the threaded engagement correspondingly formed on the circumference with opening 18.As shown in the figure, screw thread 222 extends and surpasses the axial distance of the screw thread 172 of opening 18 on the whole width that sucks cover plate 22.Therefore, the some parts of the screw thread 222 on cover plate 22 is not meshed with the screw thread 172 on opening 18.Pressure in cylinder inner cavity 39 is applied to power on the internal surface 23 of cover plate 22, and it is delivered to open-top screw thread 172 from cover plate screw thread 222.Whether the screw thread 222 be not meshed with open-top screw thread 172 will or not receive load/be delivered to screw thread 172, and therefore be known as unloaded screw thread 224 here.The screw thread 222 be meshed with screw thread 172 can bearing load and is known as load screw thread 223.
Arrow F shows the direction that is applied to the power of cover plate 22 by the pressure of cylinder 39.In most of load concentration of transmitting between the screw thread be meshed on front 2-3 the screw thread adjoining in the load with applying; In the example of Fig. 3, it is the load screw thread 223 of contiguous unloaded screw thread 224.Since front 2-3 load screw thread 223 is greatly about the intermediate portion of plate screw thread 222, the degree of depth of screw thread is basically consistent, and this height of thread from arbitrary end of plate screw thread 22 is different.The process that forms screw thread causes height of thread usually in the end of screw thread, to be less than the intermediate portion office of screw thread.Height of thread is in the common minimum of the end of screw thread and be increased to the screw thread of shaping fully with maximum depth, until reach contrary terminal.In a representational mode of execution, the load screw thread 223 that load is delivered to cylinder block 17 from cover plate 22 be shaped fully and there is the basically maximum degree of depth.This makes the stress in screw thread 222 concentrate minimum, if the part of the direct adjacent inner surface 23 of screw thread 222 is meshed with open-top screw thread 172, described stress may occurs and concentrate.Fig. 3 provides the example of the threaded engagement in the interior part with screw thread 222 length, prevents from being carried on the end that the screw thread of screw thread 222 length may not exclusively be shaped.Preferably, unloaded screw thread 224 comprises at least the first two screw thread of the thread set 223,224 of combination.Unloaded screw thread 224 has the shape identical with load screw thread 223.The length of load screw thread 223 is greater than the length of unloaded screw thread 224, is preferably at least twice.
The diameter of opening 18 reduces along crooked outline 174 or fillet surface, and crooked outline 174 or fillet surface are crossed the internal surface 23 of the suction cover plate 22 of contiguous suction cover 55, and profile 174 has the radius of restriction there.In one embodiment, the scope of radius is from about 10% to about 30% of the distance between the anterior of opening 18 and the shoulder that formed by profile 174.The benefit that profile 174 provides is its distributed load stress in the zone of cylinder block 17 better, at described location opening 18, is necked up to suction cover 55.Unloaded screw thread 224 is positioned at the smooth cylindrical part of opening 18 and the wall of contact openings 18 not.
Fig. 4 provides the side cross-sectional view that sucks the example of cover plate 22.Cover plate 22 is shown to have the screw thread 222 on its outer periphery and is formed into the jack 224 in cover plate 22.Jack 224 is illustrated as and cover plate axis A
pcoaxially; Jack 224 can be shaped as and receive for cover plate 224 being installed to the spanner of opening 18.
There is shown the example of screw thread 222 in Fig. 5 at the side cross section.As shown, screw thread 222 comprises root portion 226 separately, and described root portion 226 is curved with along the arc distributed force, rather than allowable stress concentrates, if thread root limits one jiao, to produce described stress concentrated.Screw thread 222 comprises load side 228 and tooth top 230, and load side 228 optionally is illustrated as being arranged to respect to cover plate axis A
pbecome the angle of 7 °, and described tooth top 230 is by butt rather than elongated.Tooth top 230 is smooth in sectional view.The rear side 232 of screw thread 222 is along with respect to cover plate axis A
pthe path of inclination several angle extends to root 226 from tooth top 230.In a representational mode of execution, rear flank 232 and cover plate axis A
pbetween angle can be about 45 °.In one embodiment, the screw thread 172 on opening 18 can be formed and form as described in the mode of execution of Fig. 5, and can be described to English buttress thread (British Butt Thread).The benefit that use is used together with the present invention as the screw thread shown in Fig. 5 is that the stress that reduces thread root is concentrated, and therefore reduces working life tired and that improve parts.
Although in its an only form, the present invention has been shown, it should be apparent to those skilled in the art, that is, it is not so to limit, and is being easy to without departing from the scope of the invention carry out multiple change.
Claims (17)
1. a reciprocating pump assembly comprises:
Cylinder body;
Cylinder inner cavity in described cylinder body;
Reciprocally be arranged in to motion the plunger in described cylinder body;
The opening of contiguous described cylinder inner cavity in described cylinder body;
Be formed on the screw thread in described opening;
Cover plate in described opening; With
Thread surface on the periphery of described cover plate, described thread surface engagement is formed on the screw thread in described opening and stretches out the described screw thread surpassed on described opening in described cylinder body.
2. reciprocating pump assembly as claimed in claim 1, the thread surface on wherein said cover plate comprises that at least two are stretched out the unloaded screw threads that surpass the described screw thread in described opening in described cylinder body.
3. reciprocating pump assembly as claimed in claim 1, thread surface on wherein said cover plate comprise a length with described opening in the load screw thread of described threaded engagement, surpass the unloaded screw thread of the described screw thread in described opening with stretching out of a length in described cylinder body, and the length of described load screw thread is greater than the length of described unloaded screw thread.
4. reciprocating pump assembly as claimed in claim 1, the thread surface on the periphery of wherein said cover plate comprises the screw thread had with the root portion of crooked outline.
5. reciprocating pump assembly as claimed in claim 1, the thread surface on the periphery of wherein said cover plate comprises English buttress thread.
6. reciprocating pump assembly as claimed in claim 1, the thread surface on the periphery of wherein said cover plate comprises about 60% to about 70% the screw thread that height of thread is pitch.
7. reciprocating pump assembly as claimed in claim 1, the thread surface on the periphery of wherein said cover plate comprises the screw thread with butt tooth top.
8. reciprocating pump assembly as claimed in claim 3, wherein at least some unloaded screw threads and load screw thread are basic identical.
9. reciprocating pump assembly as claimed in claim 1, the thread surface on the periphery of wherein said cover plate comprises the screw thread with rear flank, described rear flank is arranged to become along the angle with respect to the cover plate axis path of the angle orientation of about 45 °.
10. a reciprocating pump assembly comprises:
Cylinder block;
Be formed on a plurality of cylinder inner cavities in cylinder body;
Reciprocally be arranged in to motion the plunger in each cylinder inner cavity;
In cylinder body and at the circular open of the end of each inner chamber;
Be formed on the screw thread in described opening;
A plurality of cover plates, there is separately the screw thread be formed on its periphery, the described screw thread of at least a portion length is shaped fully and is had maximum depth, described cover plate is connected in each opening coaxially, makes the maximum depth of each cover plate screw thread partly mesh the adjoining part in each screw thread and end each inner chamber in described opening; With
The part of the maximum depth of each cover plate screw thread part not with described opening in thread engagement and the screw thread from described opening further inside.
11. reciprocating pump assembly as claimed in claim 10, wherein with respect to the axis of described opening, the axial length of the screw thread in described opening is less than the axial length of each cover plate screw thread.
12. reciprocating pump assembly as claimed in claim 11, wherein when being in a fixed position, the outer end of each cover plate screw thread is basically concordant with the outer end of screw thread in described opening.
13. reciprocating pump assembly as claimed in claim 10, further be included in the level and smooth cylindrical part that the inner in each opening and screw thread in described opening is connected, and wherein the part of the maximum depth part of each cover plate screw thread is positioned at described level and smooth cylindrical part.
14. reciprocating pump assembly as claimed in claim 10, the thread surface on the periphery of wherein said cover plate comprises the buttress thread with butt tooth top and circular root.
15. a pump assembly comprises:
Cylinder body;
Cylinder inner cavity in described cylinder body;
Reciprocally be arranged in to motion the plunger in described cylinder body;
In described cylinder body with the adjoining opening of described cylinder inner cavity;
Be formed on the screw thread in described opening;
Cover plate in described opening;
Thread surface on the periphery of described cover plate, the engagement of described thread surface is formed on the screw thread in described opening and has at least two stretches out the unloaded screw threads that surpass the screw thread on described opening in described cylinder body, and surpasses the load screw thread of a length of the length of described unloaded screw thread.
16. pump assembly as claimed in claim 15, the screw thread on wherein said cover plate comprises English buttress thread.
17. pump assembly as claimed in claim 15, the screw thread on wherein said cover plate has the butt tooth top.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13877608P | 2008-12-18 | 2008-12-18 | |
| US61/138,776 | 2008-12-18 | ||
| PCT/US2009/068773 WO2010080625A2 (en) | 2008-12-18 | 2009-12-18 | Suction port lock nut with stub buttress threads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103443458A true CN103443458A (en) | 2013-12-11 |
Family
ID=42266398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801566733A Pending CN103443458A (en) | 2008-12-18 | 2009-12-18 | Suction port lock nut with stub buttress threads |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20100158727A1 (en) |
| EP (1) | EP2368040A2 (en) |
| CN (1) | CN103443458A (en) |
| AU (1) | AU2009335645A1 (en) |
| CA (1) | CA2747705A1 (en) |
| EA (1) | EA201171059A1 (en) |
| MX (1) | MX2011006686A (en) |
| SG (1) | SG172247A1 (en) |
| WO (1) | WO2010080625A2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9157468B2 (en) | 2010-06-04 | 2015-10-13 | S.P.M. Flow Control, Inc. | Packing nut lock and method of use |
| UA109682C2 (en) * | 2010-12-09 | 2015-09-25 | PUMP PUMP PLACED PIPE | |
| MX2015012967A (en) | 2013-03-15 | 2017-02-20 | Acme Ind Inc | Fluid end with protected flow passages. |
| US9605767B2 (en) * | 2014-06-11 | 2017-03-28 | Strom, Inc. | Systems and methods utilizing a grooveless fluid end for high pressure pumping |
| US9702359B2 (en) | 2015-09-01 | 2017-07-11 | TSC Manufacturing and Supply, LLC | Pump casing |
| US11105328B2 (en) | 2017-08-28 | 2021-08-31 | S.P.M. Flow Control, Inc. | Suction cover assembly for reciprocating pumps |
| WO2019046733A1 (en) * | 2017-09-01 | 2019-03-07 | S.P.M. Flow Control, Inc. | Suction cover assembly for reciprocating pumps |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA678274A (en) * | 1964-01-21 | Dzus William | Stud having overhanging re-entrant load bearing threads and a sheet metal nut with resilient helically inclined wings | |
| US3933074A (en) * | 1974-12-09 | 1976-01-20 | Kaynar Manufacturing Co., Inc. | Fatigue improvement nut |
| FR2707712A1 (en) * | 1993-07-12 | 1995-01-20 | Mugnier Henri Sa | Device making it possible to attach a pressure switch rigidly to an exhaust gas valve especially for the turbocompressors of combustion engines |
| CN1283743A (en) * | 1999-07-07 | 2001-02-14 | 株式会社丰田自动织机制作所 | Volume variable compressor |
| CN1180181C (en) * | 2000-01-11 | 2004-12-15 | 株式会社丰田自动织机制作所 | Piston-type compressor and assembling method thereof |
| US20050201881A1 (en) * | 2004-03-11 | 2005-09-15 | Gardner Denver, Inc. | Self-tightening cover for pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100302886B1 (en) * | 1998-11-20 | 2001-11-22 | 이종진 | Reciprocating compressor |
| US7364412B2 (en) * | 2004-08-06 | 2008-04-29 | S.P.M. Flow Control, Inc. | System, method, and apparatus for valve stop assembly in a reciprocating pump |
| KR20080008442A (en) * | 2006-07-20 | 2008-01-24 | 주식회사코핸즈 | Connecting structure of air compressor |
-
2009
- 2009-12-18 CN CN2009801566733A patent/CN103443458A/en active Pending
- 2009-12-18 US US12/642,006 patent/US20100158727A1/en not_active Abandoned
- 2009-12-18 WO PCT/US2009/068773 patent/WO2010080625A2/en active Application Filing
- 2009-12-18 EP EP09837995A patent/EP2368040A2/en not_active Withdrawn
- 2009-12-18 SG SG2011044716A patent/SG172247A1/en unknown
- 2009-12-18 MX MX2011006686A patent/MX2011006686A/en unknown
- 2009-12-18 CA CA2747705A patent/CA2747705A1/en not_active Abandoned
- 2009-12-18 AU AU2009335645A patent/AU2009335645A1/en not_active Abandoned
- 2009-12-18 EA EA201171059A patent/EA201171059A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA678274A (en) * | 1964-01-21 | Dzus William | Stud having overhanging re-entrant load bearing threads and a sheet metal nut with resilient helically inclined wings | |
| US3933074A (en) * | 1974-12-09 | 1976-01-20 | Kaynar Manufacturing Co., Inc. | Fatigue improvement nut |
| FR2707712A1 (en) * | 1993-07-12 | 1995-01-20 | Mugnier Henri Sa | Device making it possible to attach a pressure switch rigidly to an exhaust gas valve especially for the turbocompressors of combustion engines |
| CN1283743A (en) * | 1999-07-07 | 2001-02-14 | 株式会社丰田自动织机制作所 | Volume variable compressor |
| CN1180181C (en) * | 2000-01-11 | 2004-12-15 | 株式会社丰田自动织机制作所 | Piston-type compressor and assembling method thereof |
| US20050201881A1 (en) * | 2004-03-11 | 2005-09-15 | Gardner Denver, Inc. | Self-tightening cover for pump |
Non-Patent Citations (1)
| Title |
|---|
| EDWARD W. ERNST等: "《Tool Engineers Handbook》", 31 January 1949 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EA201171059A1 (en) | 2012-02-28 |
| EP2368040A2 (en) | 2011-09-28 |
| AU2009335645A1 (en) | 2011-07-14 |
| US20100158727A1 (en) | 2010-06-24 |
| CA2747705A1 (en) | 2010-07-15 |
| MX2011006686A (en) | 2011-12-14 |
| WO2010080625A3 (en) | 2010-09-23 |
| SG172247A1 (en) | 2011-07-28 |
| WO2010080625A2 (en) | 2010-07-15 |
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Application publication date: 20131211 |