WO2022039732A1 - Ensemble raccord à marteau - Google Patents

Ensemble raccord à marteau Download PDF

Info

Publication number
WO2022039732A1
WO2022039732A1 PCT/US2020/046946 US2020046946W WO2022039732A1 WO 2022039732 A1 WO2022039732 A1 WO 2022039732A1 US 2020046946 W US2020046946 W US 2020046946W WO 2022039732 A1 WO2022039732 A1 WO 2022039732A1
Authority
WO
WIPO (PCT)
Prior art keywords
union
wingnut
hammer
lugs
assembly
Prior art date
Application number
PCT/US2020/046946
Other languages
English (en)
Inventor
Martin Fritz
Jason Nelms
Curtis Thierry
Original Assignee
Best Flow Line Equipment, L.P.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Best Flow Line Equipment, L.P. filed Critical Best Flow Line Equipment, L.P.
Priority to PCT/US2020/046946 priority Critical patent/WO2022039732A1/fr
Publication of WO2022039732A1 publication Critical patent/WO2022039732A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0231—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member with specially adapted means for positioning the threaded member behind the collar
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/06—Screw-threaded joints; Forms of screw-threads for such joints characterised by the shape of the screw-thread

Definitions

  • the present invention relates to hammer unions. More particularly, the present invention relates to the configuration of the threads of such hammer unions. Additionally, the present invention relates to hammer unions having a plurality of lugs extending outwardly therefrom.
  • a more specialized quick connect/disconnect coupling is known as a hammer union which comprises four components: a thread end having coarse male threads on the exterior thereof, a seal on the inside of the thread end, a nut end having a smooth nose abutting the seal, and a hammer nut having coarse female threads on the interior and lugs on the exterior which may be struck with a hammer to cinch up the coupling.
  • hammer unions have the capability of being quickly connected and disconnected, they are widely used in temporary installations or in equipment which is expected to be disassembled periodically.
  • FIG. 1 U.S. Patent Application Publication No. 2016/0377207, published on December 29, 2016 to Witkowski et al., is shown and described in FIGURES 1-3 herein.
  • this patent application publication describes a "full-root-radius" threaded wingnut having increased wall thickness.
  • this patent application publication describes a wingnut 10 having has a body 12 having an axial length between a first end surface 14 and a second end surface 16.
  • the body 12 also has an exterior surface 18 extending between the first end surface 14 and the second end surface 16.
  • the wingnut 10 includes an interior passage 20 axially extending through the body 12 from the first end surface 14 to the second end surface 16.
  • the passage 20 defines an interior surface 22 of the body 12.
  • the wingnut 10 also include circumferentially-spaced lugs 24, 26 and 28. These lugs 24, 26 and 28 extend radially outwardly from the exterior surface 18 of the body 12.
  • FIGURE 2 is a cross-sectional view showing the various components of the wingnut assembly 30 of U.S. Patent Application Publication No. 2016/0377207.
  • the hammer union 30 includes a male union 32, a threaded female union 34, wingnut 10 (as shown in FIGURE 1), a seal ring 36, a plurality of retainer segments 38, and a retaining ring 40.
  • the female union 34 is concentrically disposed about the seal ring 36 with the seal ring 36 engaging both the female union 34 and the male union 32.
  • Opposing faces of the female union 34 and the male union 32 are engaged and the plurality of retainer segments 38, which are held together using the retainer ring 33, are concentrically disposed about the male union 32.
  • the wingnut 10 is concentrically disposed about each of the male union 32, the plurality of retainer segments 38, the seal ring 36, and the female union 34 so as to couple the mail union 32 to the female union 34.
  • the wingnut 10 is shown as having internal threads 42.
  • the female union 34 has an external threads 44 engaged with the female threads 42.
  • the internal threads 42 are full root radius threads. This is particularly shown in FIGURE 3 herein.
  • FIGURE 3 is an illustration from U.S. Patent Application Publication No. 2016/0377207 regarding these "full root radius" threads.
  • the internal threaded connection 46 has a full-root radius, as indicated as the radius R on in FIGURE 3.
  • the internal threaded connection 46 may have a full-root radius of 0.06 inches or 0.07 inches.
  • the internal threaded connection 46 has an National Acme Thread Form and thus a pitch angle, as indicated as the angle in FIGURE 3 of 29°.
  • the internal threaded connection 46 has a National Acme Thread Form and thus a pitch angle of 29° and has a full-root radius of 0.053 inches. It was intended that this internal threaded connection 46 having the full-root radius reduces the amount of stress experienced in the body of the wingnut 10 near the internal threaded connection 46.
  • the use of the "full root radius” is a rather undesirable threaded connection. Because of the need to create a "full root radius", the depth of the thread is increased. In particular, at the very root of the "full-root radius", there is a point of concentration and stress between the external thread in the internal thread. This small area of contact at the major diameter of the "full root radius” increases stress concentrations within the wingnut after repeated blows with a sledgehammer. The use of full root radius threads creates load concentrations onto the body of the wingnut that are undesirable. As such, this would reduce the effective life of the wingnut and, in particular, the threads of the wingnut.
  • It is still another object of the present invention provide a hammer union assembly which avoids the deformation of the wingnut after repeated use.
  • the present invention is a hammer union assembly that comprises a male union, a female union having external threads adjacent to an end thereof, a wingnut having internal threads therein which are engaged with the external threads of the female union, and a sleeve interposed between the wingnut and the male union.
  • the wingnut has more than three lugs extending outwardly of the body thereof.
  • the internal threads of the wingnut have a non-full root radius.
  • the internal threads of the wingnut have a flat at a major diameter thereof and a pair of flanks extending inwardly from opposite sides of the flat.
  • the flat is planar around the major diameter.
  • Each of the pair of flanks has a radius.
  • the wingnut has four lugs evenly circumferentially spaced from each other around the wingnut.
  • the sleeve is a split sleeve.
  • the split sleeve has an exterior shoulder bearing against the internal shoulder of the wingnut.
  • the split sleeve extends over and outer diameter of the male union.
  • the male union has an external shoulder adjacent the end of the male union.
  • the split seat sleeve has an end bearing against the external shoulder of the male union.
  • the wingnut has a body from which the four lugs extend. A blend radius is formed between the body and each of the lugs.
  • the body is a first end and a second end.
  • Each of the lugs has a side positioned axially inwardly from at least one of the first and second ends of the body.
  • FIGURE 1 is a perspective view of a prior art wingnut as used in a hammer union assembly.
  • FIGURE 2 is a cross-sectional side view of a hammer union assembly of the prior art.
  • FIGURE 3 is a detailed cross-sectional view showing threads of the prior art with a fullroot radius.
  • FIGURE 4 is a perspective view of the hammer union assembly of the present invention.
  • FIGURE 5 is a cross-sectional view of the hammer union assembly in accordance with the teachings of the present invention.
  • FIGURE 6 is a cross-sectional view showing the wingnut of the hammer union assembly of the present invention.
  • FIGURE 7 is an enlarged view of the circled area of FIGURE 6 showing, in particular, the non-full-root radius threads as used in the wingnut of the hammer union assembly of the present invention.
  • the hammer union assembly 50 includes a wingnut 52, a female union 54 and a male union 56.
  • the female union 54 and the male union 56 are arranged in generally end-to-end relationship within the interior 58 of the wingnut 52.
  • the configuration of the interior 58 of the wingnut 52 is shown in greater detail hereinafter in FIGURE 5.
  • the wingnut 52 has four lugs 60, 62, 64 and 66.
  • lug 60 is diametrically opposite to lug 64.
  • Lug 62 is diametrically opposite to lug 66.
  • This configuration of four lugs has been found to dissipates shock stress around the body 68 of the wingnut 62. Since lug 68 is diametrically opposite to lug 62, when lug 62 is struck with the sledgehammer, the greater thickness of the body 68 caused by the configuration of the diametrically-opposite lug 66 will prevent or reduce shock concentrations directly opposite to the lug 62.
  • the use of the four lugs in which the lugs are diametrically opposite to each other prevents or reduces the triangulation of the body 68 of the wingnut 52 over continual use.
  • the use of the four wingnuts 60, 62, 64 and 66 presents a striking surface to the person with the sledgehammer in a more convenient location than the use of three lugs. In other words, after one of the lugs is struck with a sledgehammer, another of the lugs will be in a more convenient location for striking when the body 68 of the wingnut 52 is rotated about the male union 56 and the female union 54.
  • FIGURE 4 it can be seen that there is a blend radius 70 that is formed to between the body 68 and the lug 66 and another blend radius 72 illustrated as formed between the body 68 and the lug 62.
  • This blend radius causes the respective lugs to be positioned inwardly slightly from the opposite end 74 of the body 68.
  • this blend radius tends to dissipates shock stress around the body.
  • a great deal of force is at the ends of the body 68, in particular at the location of each of the lugs. Over time, the lack of a blend radius has been found to cause deformation of the wingnut 52.
  • FIGURE 5 shows the hammer union assembly 50 of the present invention in cross-section.
  • FIGURE 5 shows the male union 56, the female union 54, and the wingnut 52.
  • the female union 54 has threads 80 adjacent to an end 82 thereof.
  • the male union 56 has an end 84 facing the end 82 of the female union 54.
  • the wingnut 52 has internal threads 86 therein.
  • the external threads 80 of the female union 54 are engaged with the internal threads 86 of the wingnut 52.
  • the wingnut 52 has lugs 60 and 64 extending outwardly of body 68.
  • the internal threads 86 have a non- full root radius.
  • a sleeve 88 is interposed between the wingnut 52 and the male union 56.
  • the sleeve 88 is a split sleeve.
  • the split sleeve allows for easy installation over the male union 56.
  • the split sleeve 88 has an external shoulder 90 bearing against an internal shoulder 92 of the wingnut 52.
  • the split ring 88 extends over an outer diameter of the male union 56.
  • the split sleeve 88 also is interposed between an inner surface 94 of the wingnut 52 and the outer diameter of the male union 56.
  • the split sleeve 88 provides a seal between the wingnut 52 and the male union 56.
  • the male union has an external shoulder 96 adjacent to the end 84 of the male union 56.
  • the split sleeve 88 has an end bearing against this external shoulder 96 of the male union 56.
  • FIGURE 8 shows a cross-sectional view of the wingnut 52.
  • the wingnut 52 has lug 60 at the top thereof and lug 64 at the bottom thereof.
  • the blend radius 104 is illustrated as extending between the lugs 60 and the end 106 of the wingnut 52.
  • the lug 60 will actually be positioned inwardly of the end 106 of the wingnut 52.
  • the blend radius 108 will cause the lug 64 to be positioned inwardly of the end 106 of the wingnut 52.
  • the blend radiuses 104 and 108 serve to dissipate shock stress around the body 68 of the wingnut 52. In particular, it avoids those stress points directly at the end 106 of the wingnut 52.
  • FIGURE 6 show a circled area 7. Circled area 7 is illustrated in greater detail in FIGURE 7.
  • FIGURE 7 shows the internal configuration of the internal threads 86 of the wingnut 52.
  • the internal thread 56 does not have a full-root radius.
  • the internal thread 86 has a flat 110 that the major diameter of the thread 86 and a pair of flanks 112 extending inwardly from opposite sides of the flat 110.
  • the flat has a width of less than 0.05 inches.
  • the flat is planar around the major diameter of the thread.
  • Each of the pair of flanks is curved so as to have a radius. In the preferred embodiment of the present invention, this radius will be approximately 0.03 inches.
  • This particular configuration of thread superior to the full-root radius thread By having a flat 110 and a pair of flanks 112, the height of the external threads that mate with these internal threads 86 can be reduced. Furthermore, the major diameter can also be reduced. The major diameter of the thread is the area where the point concentration of stresses will occur. In a fullroot radius thread, there will be a point of maximum concentration of stress forces. The present invention avoids this concentration of forces by providing a flat area of contact rather than a point area of contact. The radiused flanks also serve to distribute shock forces more evenly around the body of the wingnut and also around the female union 54. This configuration is also important where a four-lugged wingnut is used.
  • the unique configuration of the non-full root thread of the present invention further distributes load concentrations.
  • the stress points between the threads and the four lugs is changed in the present invention.
  • the stress concentration would be generally at the two corners of the root rather than a single localized location in the major diameter of the root.
  • the thread can crack.
  • the present invention by providing these two points of contact will further reduce the possibility of cracking as a result of the forces applied. As such, by the combination of the non-full root thread and the four lugs, the life of the hammer union assembly can be increased and the deformation of the wingnut of the hammer union assembly minimized.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

Un ensemble raccord à marteau (50) comporte un raccord mâle (56), un raccord femelle (54) doté de filetages externes adjacents à son extrémité, un écrou à oreilles (52) comportant des filetages internes, les filetages externes du raccord femelle (54) s'engrenant avec les filetages internes de l'écrou à oreilles (52), et un manchon (88) interposé entre l'écrou à oreilles et le raccord mâle. Le raccord mâle comporte une extrémité faisant face à l'extrémité du raccord femelle. L'écrou à oreilles (52) comporte quatre oreilles (60, 62, 64 et 66) s'étendant vers l'extérieur de son corps (68). Les filetages internes de l'écrou à oreilles présentent un rayon de fond non complet. Les filetages internes comportent un méplat au niveau d'un diamètre majeur desdits filetages et une paire de flancs s'étendant vers l'intérieur à partir de côtés opposés du méplat.
PCT/US2020/046946 2020-08-19 2020-08-19 Ensemble raccord à marteau WO2022039732A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2020/046946 WO2022039732A1 (fr) 2020-08-19 2020-08-19 Ensemble raccord à marteau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2020/046946 WO2022039732A1 (fr) 2020-08-19 2020-08-19 Ensemble raccord à marteau

Publications (1)

Publication Number Publication Date
WO2022039732A1 true WO2022039732A1 (fr) 2022-02-24

Family

ID=80323676

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2020/046946 WO2022039732A1 (fr) 2020-08-19 2020-08-19 Ensemble raccord à marteau

Country Status (1)

Country Link
WO (1) WO2022039732A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8657547B2 (en) * 2008-11-11 2014-02-25 Halliburton Energy Services, Inc. Hammer union wing nut
US20160377207A1 (en) * 2015-06-15 2016-12-29 S.P.M. Flow Control, Inc. Full-root-radius-threaded wing nut having increased wall thickness
US20200124211A1 (en) * 2018-10-23 2020-04-23 Fmc Technologies, Inc. Heavy duty wing nut

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8657547B2 (en) * 2008-11-11 2014-02-25 Halliburton Energy Services, Inc. Hammer union wing nut
US20160377207A1 (en) * 2015-06-15 2016-12-29 S.P.M. Flow Control, Inc. Full-root-radius-threaded wing nut having increased wall thickness
US20200124211A1 (en) * 2018-10-23 2020-04-23 Fmc Technologies, Inc. Heavy duty wing nut

Similar Documents

Publication Publication Date Title
CA2503231C (fr) Raccord-union a durabilite amelioree
US5388866A (en) High pressure coupling with provision for preventing separation of parts and with anti-galling provision
JP7236192B2 (ja) 管継手
US8205916B2 (en) High-pressure threaded union with metal-to-metal seal, and metal ring gasket for same
EP0480478B1 (fr) Raccord de tuyaux
US7789434B2 (en) Coupling with concave bearing surface
US4390186A (en) Metal-to-metal ribbed seal
RU2404390C2 (ru) Гидравлическая муфта
EP0412677B1 (fr) Raccord de conduits
EP0746666B1 (fr) Dispositif etanche de raccordement
US4753461A (en) Coupling for coupling tubular members
WO2022039732A1 (fr) Ensemble raccord à marteau
US20210025525A1 (en) Hammer union assembly
US5360238A (en) Pipe couplings
US20230037968A1 (en) Metal seal weld-on connector for conductor casing
US4532955A (en) Wedge lock valve retainer
US5018771A (en) Threaded tubular connection
EP1460235A2 (fr) Appareil pour charger de facon mecaniques des pièces travaillant à la compression

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20950457

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 23.06.2023)

122 Ep: pct application non-entry in european phase

Ref document number: 20950457

Country of ref document: EP

Kind code of ref document: A1